GBJ 202-1983 Code for construction and acceptance of foundation and foundation engineering
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Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for Construction and Acceptance of Foundation and Substructure Engineering GBJ202-83
Engineering Construction Standard Full-text Information System
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National Standard of the People's Republic of China
Code for Construction and Acceptance of Foundation and Substructure Engineering GBJ202-83
Editor: Shanghai Municipal Construction Engineering Bureau
Approval Unit: People's Republic of China Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China Reported to the State Planning Commission of the People's Republic of China for record 1
Effective date: 19
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Notice on the approval of the issuance of "Code for Construction and Acceptance of Foundation and Substructure Engineering"
(83) Chengkezi No. 760
Our Ministry has organized the revision of the national standard "Code for Construction and Acceptance of Foundation and Substructure Engineering" (GBJ17-66). The revised draft has been reviewed and approved, and is now approved for issuance and reported to the State Planning Commission for record. It will be implemented from May 1, 1984, with the number GBJ202-83. The specific revision of this code was conducted under the auspices of the Shanghai Municipal Construction Committee, edited by the Shanghai Municipal Construction Bureau, and jointly with the Ministry of Railways, the Ministry of Water Resources and Electric Power, the Henan, Guangdong, Shaanxi Provincial Construction Bureaus, the Shanghai Municipal Engineering Bureau and the China Academy of Building Research and other affiliated design, construction and scientific research units. If there are any questions or comments during the implementation process, please inform the Shanghai Construction Engineering Bureau in writing so that it can be explained and revised. Ministry of Urban and Rural Construction and Environmental Protection
October 29, 1983
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Revision Notes
According to the notification of the former State Construction Commission (79) Jianfa Shizi No. 168, under the auspices of the Shanghai Construction Commission, the Shanghai Construction Engineering Bureau, as the chief editor, jointly with the Ministry of Railways, the Ministry of Water Resources and Electric Power, the Henan, Guangdong, Shaanxi Provincial Construction Bureaus, the Shanghai Municipal Engineering Bureau and the China Academy of Building Research and other affiliated design, construction and scientific research units, revised the "Code for Construction and Acceptance of Foundation and Substructure Engineering" GBJ17-66 (revised version) issued by the former State Construction Commission. During the revision process, after investigation and research, we widely solicited opinions from relevant units across the country. Based on the principle of "advanced technology, economic rationality, safety and applicability, and quality assurance", we retained the applicable provisions of the original specification, deleted and modified the inapplicable provisions, and added new technologies and scientific research results that have been identified and widely used. After two national conferences, the revision was finalized. In addition to retaining the chapters on foundation, pile foundation, caisson and caisson in the original specification, the revised content added and adjusted the chapters on well point lowering groundwater level, underground continuous wall, strong tamping, preloading, Wanghe ash squeezed pile, vibroflotation, rotary grouting, static pressure piles in pile foundation, sulfur cement anchor piles, steel pipe piles and various cast-in-place piles, and cancelled the chapters on "artificial freezing of soil" and "pipe column foundation" that are not commonly used in civil engineering.
If any unit finds any problems that need to be modified or supplemented during the implementation process, please send your opinions and relevant materials to the Shanghai Construction Engineering Bureau for reference during the revision.
Shanghai Construction Engineering Bureau
November 1983
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Chapter 1
Chapter 2
Well Points to Lower Groundwater Level
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
-General Regulations·
Light well point
Jet and point
Electro-osmosis well point
Tube well point
Deep well point
Chapter 3
.......
Section 1
Lime soil foundation
Section 2 Sand and gravel foundation
Section 3 Broken brick and cement foundation
Section 4 Heavy hammer solid foundation
Section 5 Strong tamping foundation
Section 6 Section Preloading Foundation
(I) General Provisions
(I) Drainage Sand Well
(I) Loading and Unloading
Section 7 Sand Piles
Section 8 Soil and Lime Soil Compaction Piles
Section 9 Vibro-Fixed Foundation
Section 10 Jet Grouting Foundation
Electric Telephone
Section 11 Silicified Foundation
Chapter 4
Pile Foundation:
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Section 1 General Provisions
Section 2 Precast Reinforced Concrete Piles
() Production...
(I) Lifting, handling and stacking of piles
W) Static pressure piles
(V) Node treatment of piles
Section 3 Sheet piles
Section 4 Steel pipe piles
Section 5 Concrete and reinforced concrete cast-in-place piles (I) General provisions.|| tt||（I）Cast-in-place piles bored by mud wall
Cast-in-place piles bored by (sub) dry operation
（IV）Cast-in-place piles bored by casing…
（V）Cast-in-place piles bored by explosive expansion
Section 6 Timber piles·
Section 7 Project acceptance…
Chapter 5 Underground continuous wall
Section 1
General provisions
Section 2 Wall construction
（I）Guide wall
(I) Trench excavation ·
(I) Mud…
(INV) Fabrication and installation of steel cage ·
(V) Concrete pouring and joint treatment
Section 3
Project acceptance
Chapter 6 Caisson and caisson
Section 1
General provisions
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Engineering construction standard full text information system
Section 2 Caisson|| tt||（）MakeWww.bzxZ.net
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Section 3 Caisson
Section 4 Project Acceptance
Test Method of “Verification Hammer Blows” for Portable Penetration Appendix—
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Mix ratio and main physical properties of sulfur clay
Mechanical performance index
Key points for observation of settlement of buildings and structures
Reference table for selecting hammer weight
Construction record table
Central Central Power Center
Explanation of terms used in the specification
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Chapter 1 General
Article 1.0.1 This specification applies to the construction and acceptance of foundation and foundation engineering of industrial and civil buildings.
In addition to the implementation of this specification, the relevant projects of Wangshifang, brickwork, concrete and reinforced concrete in the foundation and foundation engineering shall also be implemented in accordance with the provisions of the national standards "Construction and Acceptance Code for Earthwork and Blasting Engineering" (GBJ201-83), "Construction and Acceptance Code for Masonry Engineering" (GBJ203-83) and "Construction and Acceptance Code for Reinforced Concrete Engineering" (GBJ204-83). The foundation and base engineering with special requirements such as railways, highways, hydraulic structures and mine tunnel engineering should be implemented in accordance with the relevant special regulations. Article 1.0.2 Before the construction of foundation and base engineering, the following materials must be available:
1. Engineering geological survey report of the construction site in the construction area; 2. Construction drawings of the foundation and base, and the original underground pipelines and other obstacles should be attached;
3. Construction organization design or construction plan; 4. Necessary test data.
Note: If the actual situation is found to be inconsistent with the engineering geological survey report during construction, the relevant units should be notified to handle it.
Article 1.0.3 When constructing foundation and foundation engineering near existing buildings or structures, the following provisions shall be met: 1. Before construction, the details of the existing structure and foundation of the adjacent buildings or structures must be understood.
2. If the construction of foundation and foundation affects the use and safety of adjacent buildings or structures, effective measures shall be taken in conjunction with relevant units. Article 1.0.4 The variety, specification, grade and concentration of materials and products used in foundation and foundation engineering shall meet the design requirements. Article 1.0.5 Construction of foundation and foundation engineering shall be allowed only after the preparation work is completed, the required construction machinery and equipment and pipelines are properly installed, and the test operation is normal.
Article 1.0.Article 6 The axis positioning points and leveling base points of foundation and base engineering construction shall be properly protected and re-measured frequently after verification. Article 1.0.7 During the construction of foundation and base engineering, the concealed engineering shall be subject to intermediate acceptance. Only after passing the acceptance can the next process be carried out. After completion, it shall be accepted in accordance with the provisions of this specification. Article 1.0.8 During the construction of foundation and base engineering in winter, the following provisions shall be met:
1. Ice and snow on the on-site roads and construction sites must be cleared; 2. Frozen soil that affects construction shall be excavated and anti-freezing measures shall be taken; 3. Frozen materials shall not be used.
Article 1.0.9 Buildings and structures that require settlement observation shall refer to "Appendix 3" of this specification.
Article 1.0.10 When adopting this specification, the classification and identification of rocks and soils shall be carried out in accordance with the relevant provisions of the "Code for Geological Survey of Industrial and Civil Construction Engineering" (TJ21-77).
Article 1.0.11 During the construction of foundation and base engineering, if cultural relics, ancient sites or fossils are found, they should be reported to the relevant departments for handling immediately before continuing the construction.
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During the construction of foundation and base engineering, safety, labor protection, waterproofing, fire prevention, blasting operations and environmental protection should be implemented in accordance with relevant regulations.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 2 Well Point Lowering of Groundwater Level
General Provisions of the City
Section 1
Article 2.1.1 The methods and equipment for lowering the groundwater level (hereinafter referred to as dewatering) by well points can be determined after technical, economic and energy-saving comparisons based on the permeability coefficient of the soil layer, the required depth of water level reduction and project characteristics. The applicable scope of each type of well point can be selected according to Table 2.1.1. Scope of application of various types of well points
Well point category
Single-layer light well point
Multi-layer light well point
Jet well point
Electro-osmosis well point
Pipe well point
Deep well well point
Soil layer permeability coefficient
(m/layer night)
20~200
10~250
Depth of lowering water level
(Determined by the number of well point layers)
Determined according to the selected well point
Article 2.1.2 A construction organization design should be prepared before precipitation, and the main contents should include:
Engineering geological and hydrogeological data of the precipitation area. The permeability coefficient of the soil layer used must be reliable, and if necessary, it should be determined by on-site pumping test; 2. The structure, length and quantity of the well point pipe, the model and quantity of the pumping machinery (including the spare capacity of the pump and motor). If necessary, a dual power supply should be set. Engineering Construction Standard Full Text Information System
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Specifications and quantity of filter pipes and sand filter materials;
3. Planar and cross-sectional layout and installation drawings of the well point dewatering system. Well point pipe sinking method, burial of drainage ditch pipes and drainage location selection. Measures to prevent surface water and rainwater from flowing into the foundation pit (trench). Protection measures at the intersection of well point pipelines and construction roads;
4. Jet well point dewatering should be accompanied by the location of high-pressure water pumps, circulating water pools (boxes) and detailed installation drawings of drainage pipes (troughs); 5. Electro-osmosis well point dewatering should be accompanied by detailed layout drawings of cathodes, anodes and DC circuits;
6. Well hole construction methods and mechanical equipment requirements for deep wells; 7. Location and number of water level observation holes within the dewatering range. Article 2.1.3 Complex soil layers should be supplemented with surveys according to dewatering requirements to find out the relative aquifers and impermeable layers, the recharge relationship of groundwater, the main aquifers and underlying layers, etc.
Article 2.1.4 The location of the foundation pit (trough) should be re-inspected before dewatering construction. Article 2.1.5 The filter screen of the well point filter should be prevented from being damaged during transportation, loading and unloading and stacking. Before being lowered into the well point hole, the filter tubes must be checked one by one to ensure that the filter screen is intact.
Article 2.1.6 The pipes, components and accessories of the precipitation equipment must be inspected and cleaned before assembly, and properly stored. Article 2.1.7 The well point construction shall comply with the following provisions: 1. The parallel hole shall be vertical, the depth shall meet the requirements, and the hole diameter shall be consistent from top to bottom; 2. The filter tube position shall be set according to the requirements. If the well hole is blocked, it is strictly forbidden to insert the filter tube into the soil; if the groundwater level in the layered soil is to be lowered, the filter tube should be set in the aquifer with good permeability. If necessary, auxiliary measures such as expanding the parallel point filter layer can be taken;
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W.bzsoso.cOm7. The construction of well points should comply with the following provisions: 1. The parallel holes should be vertical, the depth should meet the requirements, and the hole diameter should be consistent from top to bottom; 2. The filter pipe position should be set according to the requirements. If the well hole is blocked, it is strictly forbidden to insert the filter pipe into the soil; if the groundwater level in the layered soil is to be lowered, the filter pipe should be set in the aquifer with good permeability. If necessary, auxiliary measures such as expanding the parallel filter layer can be taken;
Engineering Construction Standard Full Text Information System
W.bzsoso.cOm7. The construction of well points should comply with the following provisions: 1. The parallel holes should be vertical, the depth should meet the requirements, and the hole diameter should be consistent from top to bottom; 2. The filter pipe position should be set according to the requirements. If the well hole is blocked, it is strictly forbidden to insert the filter pipe into the soil; if the groundwater level in the layered soil is to be lowered, the filter pipe should be set in the aquifer with good permeability. If necessary, auxiliary measures such as expanding the parallel filter layer can be taken;
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