GBJ 233-1990 110~500kV overhead power line construction and acceptance specification GBJ233-90
Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
110～500kV Overhead Power Line
Construction and Acceptance Specification
GBJ233—90
1991Beijing
Engineering Construction Standard Full-text Information System
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
110～500kV Overhead Power Line
Construction and Acceptance Specification
GBJ233—90
Editor Department: People's Republic of China Ministry of Energy of the People's Republic of China Approval Department: Ministry of Construction of the People's Republic of China Effective Date: May 1, 1991
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Notice on the Issuance of the National Standard "110~500kV Overhead Power Line Construction and Acceptance Specification"
(90) Jianbiaozi No. 317
According to the requirements of the State Planning Commission's Document No. [1986] 2630, the "110~500kV Overhead Power Line Construction and Acceptance Specification" revised by the former Ministry of Water Resources and Electric Power and relevant departments has been reviewed by relevant departments. The "110~500kV Overhead Power Line Construction and Acceptance Specification" GBJ233-90 is now approved as a national standard and will be implemented on May 1, 1991. The original "Overhead Transmission Line Construction and Acceptance Specification" GBJ233-81 will be abolished at the same time.
This specification is managed by the Ministry of Energy, and its specific interpretation and other work is the responsibility of the Ministry of Energy's Electric Power Construction Research Institute. The publication and distribution is organized by the Ministry of Construction's Standard and Quota Research Institute. Ministry of Construction
July 2, 1990
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Revision Notes
This specification is edited by the Ministry of Energy in accordance with the requirements of the State Planning Commission's Document No. [1986] 2630. Specifically, the Ministry of Energy's Electric Power Construction Research Institute and the Ultra-High Voltage Transmission and Transformation Construction Company revised the original "Overhead Transmission Line Construction and Acceptance Specifications" GBJ233-81.
During the revision process, the specification group conducted extensive investigations and studies, carefully summarized the experience since the implementation of the original specification, absorbed some scientific research results, and widely solicited opinions from relevant units across the country. Finally, our ministry and relevant departments reviewed and finalized it. This specification is divided into nine chapters and one appendix. The main contents of this revision are: the original applicable voltage level was changed from 35-330kV to 110-500kV; the quality standard of backfill soil tamping was stipulated more realistically, and the standard value of M24 bolt tightening torque was modified and increased; reasonable requirements were put forward for the deflection value of the tower foundation with pre-tilt requirements and after tightening the wire; the standard of twisting of the tower column was added; the relevant provisions of mechanized construction were added, and the quality standards for 220kV and above projects and sag of large spans were improved, especially the provisions on tension wire stringing were added, and the treatment standards for wire damage caused by tension wire stringing were improved; the use of vaseline to remove the oxide film on the surface of the aluminum strand of the conductor was changed to conductive grease, and the voltage level of the megohmmeter for measuring porcelain insulators was increased from 2500V to 5000V. Due to the issuance of the "Technical Specifications for Hydraulic Construction of Overhead Transmission Line Conductors and Lightning Arrester", this part of the provisions in the original specification was simplified, and the allowable size deviation after hydraulic pressure was modified, as well as other modifications. During the implementation of this specification, if there are new revisions or additions, please send your comments and relevant information to the Power Construction Research Institute of the Ministry of Energy in Liangxiang, Beijing, for reference in future revisions.
Ministry of Energy
May 4, 1990
Engineering Construction Standards Full Text Information System
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Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Section 1
Section 2
Section 3
Section 4
Chapter 6
Section 1
Section 2
Section 3
Section 4||t t||Chapter 7
Section 1
Section 2
Section 3
Section 4
Chapter 8
Inspection of raw materials and equipment
Construction measurement,
Huanzhuandian
Earthwork engineering·
Foundation engineering
General provisions
Cast-in-place foundation·
Assembled prefabricated foundationWww.bzxZ.net
Rock foundation·
Tower engineering
General provisions
Concrete poles
Line engineering
General Paying out the wire
Tension paying out the wire
General provisions
Clamp connection:
Hydraulic connection
Explosion pressure connection
Accessory installation
Grounding engineering
Engineering construction standard full-text information system
Engineering construction standard full-text information system
Chapter 9
Project acceptance
Section 1
Section 2
Section 3
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Acceptance inspection
Completion test
Project handover information
Terms used in this specification
Additional explanation
Engineering construction standard full text information system
......
Engineering construction standard full text information system
Chapter 1 General
Article 1.0.1 In order to continuously improve the construction technology level of 110~500kV overhead power line projects, ensure the quality of the project, and promote the modernization of power construction, this specification is specially formulated.
Article 1.0.2 This specification applies to the construction and acceptance of new construction projects of 110~500kV AC and DC overhead power lines. New construction projects of 63kV overhead power lines should comply with the 110kV part of this specification.
Article 1.0.3 Overhead power line projects must be constructed in accordance with the approved design documents and design and construction drawings reviewed by relevant parties. When changes are required: the design unit must agree.
Article 1.0.4 The relevant provisions of this specification shall also be used as the basis for line design, except for special requirements due to special circumstances. Article 1.0.5 New technologies, new materials, and new processes must be piloted, tested, and verified before they can be adopted. Quality standards that are not lower than the corresponding level of this specification should be formulated.
Article 1.0.6 In the construction of overhead power line projects, in addition to complying with the relevant provisions of this specification, they shall also comply with the provisions of the relevant national standards and specifications currently in force. Engineering Construction Standard Full Text Information System
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Chapter 2 Inspection of Raw Materials and Equipment
Article 2.0.1 The raw materials and equipment used in overhead power line projects must comply with the following provisions:
1. There is a factory quality inspection certificate for the batch of products; 2. There are various quality inspection data that meet the relevant standards currently in force in the country; 3. For products without quality inspection data: or if there are doubts about the product inspection results, they should be re-sampled and inspected by qualified inspection units. They can only be used after they pass the inspection.
Article 2.0.2 When new raw materials and equipment without formal standards are used, technical appraisals must be obtained from relevant departments, or certificates of quality must be obtained after testing and joint appraisal by relevant units to prove that the quality is qualified before they can be used. Article 2.0.3 Raw materials and equipment must be re-tested when any of the following conditions occur:
1. The storage period exceeds the prescribed period;
2. There is a possibility of deterioration due to poor storage; 3. The sample is not representative enough.
Article 2.0.4 The crushed stone or pebbles used in precast concrete components and on-site cast foundation concrete shall comply with the relevant provisions of the current national standard "Quality Standard and Inspection Method for Crushed Stone or Pebbles for Ordinary Concrete". Article 2.0.5 The sand used in precast concrete components and on-site cast foundation concrete shall comply with the relevant provisions of the current national standard "Quality Standard and Inspection Method for Sand for Ordinary Concrete". Special areas may be implemented according to the standards of the area. Article 2.0.6 The quality of cement shall comply with the current national standards, and its variety and grade shall meet the design requirements. In addition to obtaining a factory quality certificate, each batch of cement shall also have a factory date. When cement has been out of the factory for more than three months, or has not been out of the factory for more than three months but the project 2 Construction Standard Full Text Information System
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When it is not properly kept, the grade test must be supplemented, and it should be used according to the actual grade after the test.
Cement of different varieties, grades and batches should be stacked separately. Article 2.0.7 The water used for pouring concrete shall comply with the following provisions: 1. Drinking water should be used for making precast concrete products; 2. Drinking water should be used for pouring concrete on site. When there is no drinking water, river water or clean pond water can be used. Unless there are special requirements in the design, only appearance inspection can be carried out without chemical testing. The water must not contain grease, and no harmful compounds flow into its upstream. When there is any doubt, chemical testing should be carried out;
3. Seawater shall not be used.
Article 2.0.8 Admixtures used in concrete should be products that meet the standards. It should be tested when used for the first time and can only be used after meeting the quality requirements. Article 2.0.9 The large stones added to the foundation shall not have cracks or interlayers, and their strength shall not be lower than the standard for concrete. The size should be 150-250mm, and pebbles should not be used.
Article 2.0.10 The types of steel shall comply with the requirements of the design drawings, and their quality shall comply with the relevant national standards for each type of steel. Article 2.0.11 The quality of welding rods shall comply with the relevant national standards in force. Their types and grades must be equivalent to the chemical composition and mechanical properties of the steel used, and they should have good welding process performance. The process performance test shall be carried out according to the relevant specifications for the first use. An appearance inspection shall be carried out before use, and the following provisions shall be met: 1. There shall be no grease, dirt, corrosion, etc. on the surface of the gas welding rod; 2. There shall be no coating peeling on the electric welding rod. Wet welding rods must be dried at the temperature specified in the welding rod manual, and shall be tested for process performance again, and can only be used after being identified as qualified.
Article 2.0.12 The quality of tower processing and manufacturing shall comply with the provisions of the current national standard "Technical Conditions for the Manufacturing of Transmission Line Towers". Article 2.0.13 The quality of manufacturing of circular reinforced concrete poles shall comply with the provisions of the current national standard "Circular Reinforced Concrete Poles". Engineering Construction Standards Full Text Information System
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Engineering Construction Standards Full Text Information System
Article 2.0.14 The quality of manufacturing prestressed concrete poles shall comply with the provisions of the current national standard "Circular Prestressed Concrete Poles". Article 2.0.15 The quality of processing of iron cross arms of concrete poles shall comply with the relevant provisions of the current national standard "Technical Conditions for the Manufacturing of Transmission Line Towers". The quality of processing of clamps and other steel parts shall comply with the provisions of the current relevant standards. Article 2.0.16 The quality of the conductor shall comply with the provisions of the current national standard "Aluminum Stranded Wire and Steel-core Aluminum Stranded Wire". The quality of aluminum alloy stranded wire, steel-core aluminum alloy stranded wire, aluminum-clad steel stranded wire and other types of conductors that have not yet been included in the national standard shall comply with the provisions of the relevant standards. The quality of imported conductors shall comply with the national standards of the countries of the products and shall not be lower than the IEC standards.
Article 2.0.17 When galvanized steel stranded wire is used as a lightning conductor or a pull wire, its quality shall comply with the provisions of the current national standard "Galvanized Steel Stranded Wire". Article 2.0.18 The quality of hardware shall comply with the provisions of the current national standard "Electric Power Hardware".
Article 2.0.19 The allowable deviation of the processing dimensions of prestressed reinforced concrete and ordinary reinforced concrete main prefabricated components shall comply with the provisions of Table 2.0.19. And it shall ensure the convenience of installation between components, or between components and iron parts and bolts. Its appearance inspection shall comply with the following provisions:
1. Prestressed reinforced concrete prefabricated components shall not have longitudinal and transverse cracks. 2. Ordinary reinforced concrete prefabricated components shall not have longitudinal cracks when placed on the ground for inspection, and the width of transverse cracks shall not exceed 0.05mm. 3. The surface shall be flat and shall not have obvious defects. Article 2.0.20 The quality of conductor insulators shall comply with the provisions of the current national standard "Technical Conditions for Disc Suspension Insulators". When there is doubt about the quality of insulator products, they shall be inspected and identified in accordance with the provisions of the current national standard "Sampling Plan for High Voltage Insulators".
Article 2.0.21 Bolts used for assembly must be hot-dip galvanized, and their processing quality shall comply with the provisions of the current national standard "Hot-dip galvanized fasteners for transmission towers". Article 2.0.22 Calcium carbide and acetylene gas used for gas welding shall have factory quality inspection and pass the full text information system of engineering construction standards
W.bzsosO.cO Full text information system of engineering construction standards
Permissible deviation table of processing dimensions of prestressed and ordinary reinforced concrete prefabricated components
Sectional dimensions (mm)
Embedded iron parts (reserved holes)
Deviation from the design position
Center line displacement
Installation hole distance
Exposed length of bolts|| tt||This table does not include circular concrete poles;
Chassis, cable drum, chuck
+10,-5
Network patterns, moire patterns and water patterns that cannot be directly seen by the naked eye are not considered cracks; Table 2.0.19
Other assembled
Prefabricated components
+10,-5
The centerline displacement of chassis, cable drum, chuck refers to the deviation between the actual processing position of the U-shaped ring of the cable drum, the mounting holes of the cable drum, chuck and the circular groove of the chassis and the position on the drawing. Proof, its quality can be determined by checking the sulfur and phosphorus content in the weld. Its sulfur and phosphorus content should not be higher than that of the metal being welded. The purity of oxygen used for gas welding should not be less than 98.5%. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3 Construction Measurement
Article 3.0.1 The minimum reading of the theodolite used for construction measurement should not be greater than 1'. Article 3.0.2 The measuring instruments and measuring tools must be checked before use, and the error should be corrected if it exceeds the standard.
Article 3.0.3 Before the sub-pit measurement, the position of the center pile of the pole tower nailed during the design survey must be reviewed. When one of the following situations occurs, the cause should be found out and corrected: 1. Taking the two adjacent straight line piles nailed during the design survey as the reference, the horizontal line direction deviation is greater than 50mm,
2. When the distance is re-measured by the theodolite sight method, the deviation between the distance between the center piles of two adjacent pole towers along the line direction and the design value is greater than 1% of the design span, 3. The angle value of the corner pile, when re-measured by the direction method, the deviation from the design value is greater than 1'30\.
Article 3.0.4 During construction measurement, the following terrain elevations shall be reviewed in particular:
1. The elevation of the terrain protrusions where the terrain changes greatly and the distance between the conductor and the ground may be insufficient;
2. The elevation of the objects crossed between pole towers; 3. The relative elevations of adjacent pole towers.
The deviation between the review value and the design value shall not exceed 0.5m. If it exceeds, the design unit shall find out the cause and correct it.
Article 3.0.5 The individual center piles of the pole towers lost after the design pile exchange shall be supplemented according to the design data, and the measurement accuracy shall comply with the provisions of the current technical regulations on overhead power line measurement.
Article 3.0.6 The measurement accuracy of the pole tower center pile relocation shall comply with the following provisions:
Engineering 6 Construction Standard Full Text Information SystemArticle 12 The quality of iron tower processing and manufacturing shall comply with the provisions of the current national standard "Technical Conditions for the Manufacture of Transmission Line Iron Towers". Article 2.0.13 The quality of manufacturing annular reinforced concrete poles shall comply with the provisions of the current national standard "Annular Reinforced Concrete Poles". Engineering Construction Standards Full Text Information System
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Engineering Construction Standards Full Text Information System
Article 2.0.14 The quality of manufacturing prestressed concrete poles shall comply with the provisions of the current national standard "Annular Prestressed Concrete Poles". Article 2.0.15 The quality of processing iron cross arms of concrete poles shall comply with the relevant provisions of the current national standard "Technical Conditions for the Manufacture of Transmission Line Iron Towers". The quality of processing clamps and other steel parts shall comply with the provisions of the current relevant standards. Article 2.0.16 The quality of conductors shall comply with the provisions of the current national standard "Aluminum Stranded Wire and Steel-core Aluminum Stranded Wire", and the quality of aluminum alloy stranded wire, steel-core aluminum alloy stranded wire, aluminum-clad steel stranded wire and other types of conductors that have not yet been included in the national standards shall comply with the provisions of the relevant standards respectively. The quality of imported wires shall comply with the national standards of the countries of the products and shall not be lower than the IEC standards.
Article 2.0.17 When galvanized steel strands are used as lightning conductors or pull wires, their quality shall comply with the provisions of the current national standard "Galvanized Steel Strands". Article 2.0.18 The quality of hardware shall comply with the provisions of the current national standard "Electric Power Hardware".
Article 2.0.19 The allowable deviation of the processing dimensions of prestressed reinforced concrete and ordinary reinforced concrete prefabricated components shall comply with the provisions of Table 2.0.19. And it shall ensure that the components, or the components and iron parts, bolts are easy to install. Its appearance inspection shall comply with the following provisions:
1. Prestressed reinforced concrete prefabricated components shall not have longitudinal and transverse cracks. 2. Ordinary reinforced concrete prefabricated components shall not have longitudinal cracks when placed on the ground for inspection, and the width of transverse cracks shall not exceed 0.05mm. 3. The surface shall be flat and there shall be no obvious defects. Article 2.0.20 The quality of conductor insulators shall comply with the provisions of the current national standard "Technical Conditions for Disc Suspension Insulators". When there is doubt about the quality of insulator products, they should be inspected and identified in accordance with the provisions of the current national standard "Sampling Plan for High-voltage Insulators".
Article 2.0.21 Bolts used for assembly must be hot-dip galvanized, and their processing quality shall comply with the provisions of the current national standard "Hot-dip galvanized fasteners for transmission towers". Article 2.0.22 Calcium carbide and acetylene gas used for gas welding shall have factory quality inspection and pass the full-text information system of engineering construction standards
W.bzsosO.cOFull-text information system of engineering construction standards
Table of allowable deviations in processing dimensions of prestressed and ordinary reinforced concrete prefabricated components
Sectional dimensions (mm)
Embedded iron parts (reserved holes)
Deviation from the design position
Centerline displacement
Installation hole distance
Exposed length of bolts|| tt||This table does not include circular concrete poles;
Chassis, cable drum, chuck
+10,-5
Network patterns, moire patterns and water patterns that cannot be directly seen by the naked eye are not considered cracks; Table 2.0.19
Other assembled
Prefabricated components
+10,-5
The centerline displacement of chassis, cable drum, chuck refers to the deviation between the actual processing position of the U-shaped ring of the cable drum, the mounting holes of the cable drum, chuck and the circular groove of the chassis and the position on the drawing. Proof, its quality can be determined by checking the sulfur and phosphorus content in the weld. Its sulfur and phosphorus content should not be higher than that of the metal being welded. The purity of oxygen used for gas welding should not be less than 98.5%. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3 Construction Measurement
Article 3.0.1 The minimum reading of the theodolite used for construction measurement should not be greater than 1'. Article 3.0.2 The measuring instruments and measuring tools must be checked before use, and the error should be corrected if it exceeds the standard.
Article 3.0.3 Before the sub-pit measurement, the position of the center pile of the pole tower nailed during the design survey must be reviewed. When one of the following situations occurs, the cause should be found out and corrected: 1. Taking the two adjacent straight line piles nailed during the design survey as the reference, the horizontal line direction deviation is greater than 50mm,
2. When the distance is re-measured by the theodolite sight method, the deviation between the distance between the center piles of two adjacent pole towers along the line direction and the design value is greater than 1% of the design span, 3. The angle value of the corner pile, when re-measured by the direction method, the deviation from the design value is greater than 1'30\.
Article 3.0.4 During construction measurement, the following terrain elevations shall be reviewed in particular:
1. The elevation of the terrain protrusions where the terrain changes greatly and the distance between the conductor and the ground may be insufficient;
2. The elevation of the objects crossed between pole towers; 3. The relative elevations of adjacent pole towers.
The deviation between the review value and the design value shall not exceed 0.5m. If it exceeds, the design unit shall find out the cause and correct it.
Article 3.0.5 The individual center piles of the pole towers lost after the design pile exchange shall be supplemented according to the design data, and the measurement accuracy shall comply with the provisions of the current technical regulations on overhead power line measurement.
Article 3.0.6 The measurement accuracy of the pole tower center pile relocation shall comply with the following provisions:
Engineering 6 Construction Standard Full Text Information SystemArticle 12 The quality of iron tower processing and manufacturing shall comply with the provisions of the current national standard "Technical Conditions for the Manufacture of Transmission Line Iron Towers". Article 2.0.13 The quality of manufacturing annular reinforced concrete poles shall comply with the provisions of the current national standard "Annular Reinforced Concrete Poles". Engineering Construction Standards Full Text Information System
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Engineering Construction Standards Full Text Information System
Article 2.0.14 The quality of manufacturing prestressed concrete poles shall comply with the provisions of the current national standard "Annular Prestressed Concrete Poles". Article 2.0.15 The quality of processing iron cross arms of concrete poles shall comply with the relevant provisions of the current national standard "Technical Conditions for the Manufacture of Transmission Line Iron Towers". The quality of processing clamps and other steel parts shall comply with the provisions of the current relevant standards. Article 2.0.16 The quality of conductors shall comply with the provisions of the current national standard "Aluminum Stranded Wire and Steel-core Aluminum Stranded Wire", and the quality of aluminum alloy stranded wire, steel-core aluminum alloy stranded wire, aluminum-clad steel stranded wire and other types of conductors that have not yet been included in the national standards shall comply with the provisions of the relevant standards respectively. The quality of imported wires shall comply with the national standards of the countries of the products and shall not be lower than the IEC standards.
Article 2.0.17 When galvanized steel strands are used as lightning conductors or pull wires, their quality shall comply with the provisions of the current national standard "Galvanized Steel Strands". Article 2.0.18 The quality of hardware shall comply with the provisions of the current national standard "Electric Power Hardware".
Article 2.0.19 The allowable deviation of the processing dimensions of prestressed reinforced concrete and ordinary reinforced concrete prefabricated components shall comply with the provisions of Table 2.0.19. And it shall ensure that the components, or the components and iron parts, bolts are easy to install. Its appearance inspection shall comply with the following provisions:
1. Prestressed reinforced concrete prefabricated components shall not have longitudinal and transverse cracks. 2. Ordinary reinforced concrete prefabricated components shall not have longitudinal cracks when placed on the ground for inspection, and the width of transverse cracks shall not exceed 0.05mm. 3. The surface shall be flat and there shall be no obvious defects. Article 2.0.20 The quality of conductor insulators shall comply with the provisions of the current national standard "Technical Conditions for Disc Suspension Insulators". When there is doubt about the quality of insulator products, they should be inspected and identified in accordance with the provisions of the current national standard "Sampling Plan for High-voltage Insulators".
Article 2.0.21 Bolts used for assembly must be hot-dip galvanized, and their processing quality shall comply with the provisions of the current national standard "Hot-dip galvanized fasteners for transmission towers". Article 2.0.22 Calcium carbide and acetylene gas used for gas welding shall have factory quality inspection and pass the full-text information system of engineering construction standards
W.bzsosO.cOFull-text information system of engineering construction standards
Table of allowable deviations in processing dimensions of prestressed and ordinary reinforced concrete prefabricated components
Sectional dimensions (mm)
Embedded iron parts (reserved holes)
Deviation from the design position
Centerline displacement
Installation hole distance
Exposed length of bolts|| tt||This table does not include circular concrete poles;
Chassis, cable drum, chuck
+10,-5
Network patterns, moire patterns and water patterns that cannot be directly seen by the naked eye are not considered cracks; Table 2.0.19
Other assembled
Prefabricated components
+10,-5
The centerline displacement of chassis, cable drum, chuck refers to the deviation between the actual processing position of the U-shaped ring of the cable drum, the mounting holes of the cable drum, chuck and the circular groove of the chassis and the position on the drawing. Proof, its quality can be determined by checking the sulfur and phosphorus content in the weld. Its sulfur and phosphorus content should not be higher than that of the metal being welded. The purity of oxygen used for gas welding should not be less than 98.5%. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3 Construction Measurement
Article 3.0.1 The minimum reading of the theodolite used for construction measurement should not be greater than 1'. Article 3.0.2 The measuring instruments and measuring tools must be checked before use, and the error should be corrected if it exceeds the standard.
Article 3.0.3 Before the sub-pit measurement, the position of the center pile of the pole tower nailed during the design survey must be reviewed. When one of the following situations occurs, the cause should be found out and corrected: 1. Taking the two adjacent straight line piles nailed during the design survey as the reference, the horizontal line direction deviation is greater than 50mm,
2. When the distance is re-measured by the theodolite sight method, the deviation between the distance between the center piles of two adjacent pole towers along the line direction and the design value is greater than 1% of the design span, 3. The angle value of the corner pile, when re-measured by the direction method, the deviation from the design value is greater than 1'30\.
Article 3.0.4 During construction measurement, the following terrain elevations shall be reviewed in particular:
1. The elevation of the terrain protrusions where the terrain changes greatly and the distance between the conductor and the ground may be insufficient;
2. The elevation of the objects crossed between pole towers; 3. The relative elevations of adjacent pole towers.
The deviation between the review value and the design value shall not exceed 0.5m. If it exceeds, the design unit shall find out the cause and correct it.
Article 3.0.5 The individual center piles of the pole towers lost after the design pile exchange shall be supplemented according to the design data, and the measurement accuracy shall comply with the provisions of the current technical regulations on overhead power line measurement.
Article 3.0.6 The measurement accuracy of the pole tower center pile relocation shall comply with the following provisions:
Engineering 6 Construction Standard Full Text Information System19
Other assembled
Prefabricated components
+10, -5
The centerline displacement of the chassis, cable drum and chuck refers to the deviation between the actual processing position of the U-shaped ring of the cable drum, the mounting holes of the cable drum and chuck and the circular groove of the chassis and the position on the drawing. The quality can be determined by checking the sulfur and phosphorus content in the weld. The sulfur and phosphorus content should not be higher than that of the metal being welded. The purity of oxygen used for gas welding should not be less than 98.5%. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Chapter 3 Construction Measurement
Article 3.0.1 The minimum reading of the theodolite used for construction measurement should not be greater than 1'. Article 3.0.2 The measuring instruments and measuring tools must be checked before use, and the error should be corrected if it exceeds the standard.
Article 3.0.3 Before the sub-pit measurement, the position of the center pile of the pole tower nailed during the design survey must be verified. When one of the following situations occurs, the cause should be found out and corrected: 1. The deviation of the horizontal line direction of the two adjacent straight line piles nailed during the design survey is greater than 50mm.
2. When the distance is re-measured by the theodolite sight method, the deviation between the distance between the center piles of two adjacent pole towers along the line direction and the design value is greater than 1% of the design span. 3. The angle value of the corner pile, when re-measured by the direction method, the deviation from the design value is greater than 1'30\.
Article 3.0.4 During the construction measurement, the following terrain elevations should be reviewed in detail:
, the elevation of the terrain protrusion point where the terrain changes greatly and the distance between the conductor and the ground may be insufficient;
2. The elevation of the object crossed between the pole towers; 3. The relative elevation of adjacent pole towers.
The deviation between the rechecked value and the design value shall not exceed 0.5m. If it exceeds, the design unit shall find out the reason and make corrections.
Article 3.0.5 The individual center piles of the tower position lost after the design pile exchange shall be repaired according to the design data, and the measurement accuracy shall comply with the provisions of the current technical regulations on overhead power transmission line measurement.
Article 3.0.6 The measurement accuracy of the center pile of the tower position shall comply with the following provisions:
Engineering 6 Construction Standard Full Text Information System19
Other assembled
Prefabricated components
+10, -5
The centerline displacement of the chassis, cable drum and chuck refers to the deviation between the actual processing position of the U-shaped ring of the cable drum, the mounting holes of the cable drum and chuck and the circular groove of the chassis and the position on the drawing. The quality can be determined by checking the sulfur and phosphorus content in the weld. The sulfur and phosphorus content should not be higher than that of the metal being welded. The purity of oxygen used for gas welding should not be less than 98.5%. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Chapter 3 Construction Measurement
Article 3.0.1 The minimum reading of the theodolite used for construction measurement should not be greater than 1'. Article 3.0.2 The measuring instruments and measuring tools must be checked before use, and the error should be corrected if it exceeds the standard.
Article 3.0.3 Before the sub-pit measurement, the position of the center pile of the pole tower nailed during the design survey must be verified. When one of the following situations occurs, the cause should be found out and corrected: 1. The deviation of the horizontal line direction of the two adjacent straight line piles nailed during the design survey is greater than 50mm.
2. When the distance is re-measured by the theodolite sight method, the deviation between the distance between the center piles of two adjacent pole towers along the line direction and the design value is greater than 1% of the design span. 3. The angle value of the corner pile, when re-measured by the direction method, the deviation from the design value is greater than 1'30\.
Article 3.0.4 During the construction measurement, the following terrain elevations should be reviewed in detail:
, the elevation of the terrain protrusion point where the terrain changes greatly and the distance between the conductor and the ground may be insufficient;
2. The elevation of the object crossed between the pole towers; 3. The relative elevation of adjacent pole towers.
The deviation between the rechecked value and the design value shall not exceed 0.5m. If it exceeds, the design unit shall find out the reason and make corrections.
Article 3.0.5 The individual center piles of the tower position lost after the design pile exchange shall be repaired according to the design data, and the measurement accuracy shall comply with the provisions of the current technical regulations on overhead power transmission line measurement.
Article 3.0.6 The measurement accuracy of the center pile of the tower position shall comply with the following provisions:
Engineering 6 Construction Standard Full Text Information System
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