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CECS 106:2000 China Association for Engineering Construction Standardization Technical specification for aluminum - alloy cable tray Technical specification for aluminum - alloy cable tray trayCECS106:2000
Main editor: Cable Subcommittee of Electrical Engineering Committee of China Association for Engineering Construction Standardization
Jiangsu Huawei Electric (Group) Company
Shanghai Lixin Telecommunication Equipment Co., Ltd. Approved by: China Association for Engineering Construction Standardization Effective date: October 1, 2000
Beijing, 2000
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
According to the requirements of the China Association for Engineering Construction Standardization (97) Jianbiaoxiezi No. 16 "Letter on Issuing the Plan for the Preparation of the Second Batch of Recommended Standards in 1997", this regulation is formulated.
This regulation specifies the manufacturing technical requirements, tests, inspections, and technical points of engineering design and construction of aluminum alloy cable trays. The association standard "Technical Regulations for Aluminum Alloy Cable Trays" is now approved, numbered CECS106:2000, and is recommended for use by engineering construction design, manufacturing and construction units. This code is managed and interpreted by the Electrical Engineering Committee of the China Association for Engineering Construction Standardization (No. 33, Nanbinhe Road, Guang'anmenwai, Xuanwu District, Beijing, zip code: 100055). If you find any need for modification or supplementation during use, please send your comments and information directly to the interpretation unit. Editor-in-chief: Cable Subcommittee of the Electrical Engineering Committee of the China Association for Engineering Construction Standardization
Jiangsu Huawei Electric (Group) Co., Ltd.
Shanghai Lixin Telecommunications Equipment Co., Ltd. Co-editor: Guangzhou Electrical Science Research Institute of the State Machinery Bureau National Power Station Auxiliary Equipment Industry Cable Tray Professional Committee Shanghai Maritime University Test Research Office
Main drafters: Liu Peiren, Chen Ruhui, Wang Zhongshun, Liu Jianmin, Liang Xingcai, Shen Yifei China Association for Engineering Construction Standardization
200 October 1, 2000
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Manufacturing and Testing of Aluminum Bridge
Models and Specifications
Technical Requirements
Test Methods
Inspection Rules
Pricing, Marking, Packaging, Storage
Engineering Design of Aluminum Bridge·
Selection of Types and Varieties…·
Selection of Specifications of Pallets and Ladders
He Load level selection ·
Surface anti-corrosion treatment method selection
Support and hanger configuration ·
Grounding ·
Bridge system design
Key points of aluminum bridge construction technology
Calculation method of aluminum bridge structure strength and stability Appendix A
Appendix B
Appendix C
Aluminum bridge load test
Joint conductivity test
Appendix D
Environmental condition level
This specification Explanation of Terms Used in the Code
Engineering Construction Standards Full Text Information System
(16)
(19)
(35)
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Engineering Construction Standards Full Text Information System
1 General Provisions
1.0.1 This code is formulated to meet the needs of engineering construction and make the manufacturing and engineering application of aluminum alloy cable trays (hereinafter referred to as aluminum cable trays) technologically advanced, safe and reliable, economical and applicable, and convenient for construction and operation and maintenance. This code is applicable to the manufacturing, testing and inspection of aluminum cable trays in industrial and civil buildings, as well as engineering design and construction.
1.0.3 The aluminum cable tray products selected for the project shall be tested and certified by professional quality inspection agencies recognized by the state.
1.0.4 In addition to implementing this code, the manufacturing, engineering design and construction of aluminum cable trays shall also comply with the provisions of the relevant current national standards. 1
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2 Terms
2.0.1 Aluminum alloy cable tray (abbreviation for aluminum alloy cable tray device) alumi-num-alloy cable tray system is composed of straight, curved, accessories and support brackets of trays or ladders made of aluminum alloy materials, used to support cables, and has a continuous rigid structure. 2.0.2 Ladder (abbreviation for the part of the ladder-shaped cable tray that directly supports cables) ladder
cabletray
A trapezoidal part composed of two longitudinal sides and a number of cross bars. 2.0.3 Ventilated trough cable tray is composed of a bottom plate and sides with holes, or a trough-shaped part with holes at the bottom made by punching and bending a whole piece of aluminum alloy plate. 2.0.4Solid bottom cable tray (short for components of non-porous trough-shaped cable trays that directly support cables) solid bottom cable tray
A trough-shaped component consisting of a bottom plate and sides or a solid bottom formed by bending a whole piece of aluminum alloy plate.
2.0.5Straight section
A rigid straight-shaped component that cannot change direction or geometric dimensions and is used to directly support cables.
2.0.6Elbow
A rigid non-linear component that can change direction and is used to directly support cables. 2.0.7Horizontal elbowComponent that changes the direction of the cable tray in the same horizontal plane. There are four types: 30°, 45°, 60°, and 90°.
2.0.8Horizontal tee
A component that connects the cable tray in three directions at intervals of 90° in the same horizontal plane. Divided into 2
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Equal width and variable width.
2.0.9Horizontal Cross
horizontalcross
Components connecting the bridge frame in four directions at intervals of 90° on the same horizontal plane, divided into equal width and variable width.
2.0.10Vertical Upper Elbow
verticalinsideelbow
Components that make the bridge frame change direction from the horizontal plane to the upward direction. 2.0.11Vertical Lower Elbow
verticaloutsideelbow
Components that make the bridge frame change direction from the horizontal plane to the downward direction. 2.0.12Vertical Tee
fverticaltee
Components that connect the bridge frame in three directions at intervals of 90° on the same vertical plane. 2.0.13 Reducer
Components that connect cable trays of different widths on the same plane. 2.0.14 Cable tray support (abbreviation for cable tray support member) Cable tray support is used to directly support trays, ladder racks, straight and curved parts. There are basic types such as brackets, cantilever brackets, and hangers.
2.0.15 Accessories
Connectors between straight-throughs, between straight-throughs and bends, or other parts with additional functions. They may include:
splice plates are divided into:
1 Connecting plates
1) Straight connecting plates (referred to as direct plates) splice plates2) Hinge connecting plates (referred to as hinged plates)
adjustablesplice plates are divided into horizontal and vertical types. Offset reducing splice plate3) Offset reducing splice plate (offset reducing plate for short)
4) Step-down splice plate (step-down plate for short)
5) Telescopic splice plate (telescopic plate for short)
6) Vertical support plate (support plate for short)
Expansion splice plate
Vertical support plate
7) Tray-to-box/floor splice plate2 End plate
3 Drop-out
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
5 Fastener
: hold-down device
barrier strip or divider
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Manufacturing and Testing of Aluminum Bridge
Models and Specifications
3.1.1 The model of aluminum bridge should be composed of the code of component name, type and specification: 1 Component name and type: expressed in Chinese pinyin letters. 2 Specifications: the side height and width of the aluminum bridge; the bending radius of the bend; the specification and size of the support bracket, etc., can be expressed in Arabic numerals in sequence. 3 Model example:
Specification code, for example, expressed in terms of height and width
.
Surface protection layer type code, for example, anodizing treatment is represented by O, spray powder coating
is represented by P, and painting is represented by Q.
Structural type code, for example, the code of tray type
ladder frame type, etc.
Aluminum bridge component name code.
3.1.2 The commonly used specifications and dimensions of aluminum bridges shall comply with the provisions of Table 3.1.2; 3.1.3 The standard length of a single straight piece of a pallet or ladder rack can be 2, 3, 4, or 6 meters. 3.1.4 The commonly used inner bending radius of the bends of pallets and ladder racks shall comply with the following provisions: Arc shape: 300, 600, or 900 mm.
Bending shape: The radius of the inscribed circle of the two inner sides is 300, 600, or 900 mm. 3.1.5
The area of the ventilation holes at the bottom of a perforated pallet should not be less than 40% of the bottom area. 3.1.6
The center spacing of the ladder rack's straight crosspieces and the center spacing of the ladder rack's bend crosspieces at 1/2 of their length should be 150 to 300 mm; the width of the crosspieces should be 25 to 50 mm. 5
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Common Specifications and Dimensions of Aluminum Bridge (mm)
Note: The symbol △ indicates common specifications and dimensions
3.1.7 When the tray and ladder rack need to be set up in multiple layers, the net distance between the layers of the bracket arm shall comply with the provisions of Article 4.2.3 of this Code.
3.1.8 The specifications and dimensions of various accessories and supports and hangers shall match the straight and curved series of the tray and ladder rack under the condition of meeting the corresponding load. 3.2 Technical Requirements
3.2.1 The materials used for aluminum bridge racks shall comply with the following provisions: 1 The extruded profiles for the sides and crosspieces of the aluminum bridge racks shall be made of aluminum alloy with the grade of 6063 (LD31), and the material properties shall comply with the standard of "Aluminum Alloy Building Profiles" GB/T5237. The supply state shall be T5 (RCS), and the accuracy level shall be ordinary. For the extruded profiles used in the supports and hangers, it is advisable to use aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "Industrial Aluminum Alloy Hot Extruded Profiles" GB6892, and H112 (R) shall be used in the supply state. When the engineering conditions have special requirements, the material shall be agreed upon by the supply and demand parties. 2 For the aluminum alloy plates used in the aluminum bridge, it is advisable to use aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "High-quality Aluminum and Aluminum Alloy Cold Rolled Plate" GB10569, and O (M) or HX4 (Y2) shall be used in the supply state. 6
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Aluminum rivets used in aluminum bridges shall comply with the standards of "Technical Conditions for Blind Rivets" GB12615~12619 and other standards.
4 Welding wires used in gas shielded arc welding shall comply with the standard of "Aluminum and Aluminum Alloy Welding Wires" CB10858.
3.2.2 The structure and bearing capacity of the aluminum bridge shall meet the following requirements: 1 Load level: Under the condition of supporting span of 2m and calculation according to simply supported beam, the rated uniformly distributed load of pallets and ladder racks is divided into five levels and shall meet the requirements of Table 3.2.2. Table 3.2.2 Load level
Load level
Rated uniformly distributed load kN/m
(kgf/m)
(50）
(250）
2 The structure of pallets, ladder racks and supports and hangers shall meet the requirements of strength, rigidity and stability. The calculation method is shown in Appendix A.
3 The bearing capacity of pallets and ladder racks shall be verified according to the provisions of the load test in Appendix B. The uniformly distributed load when the side begins to become unstable or the initial permanent deformation occurs in the load test is the failure load. The value of the destructive load divided by the safety factor of 1.5 is the allowable uniformly distributed load, which should not be less than the rated uniformly distributed load specified for the corresponding load grade. 4 The manufacturer should provide a curve or data table showing the relationship between the different support spans and the allowable uniformly distributed load for various types and specifications of pallets and ladder racks. 5 The manufacturer should provide a curve or data table showing the relationship between the allowable uniformly distributed load and the deflection for various types and specifications of pallets and ladder racks at different support spans. 6 The relative deflection of pallets and ladder racks when bearing the rated uniformly distributed load should not be greater than 1/150.
7 Various types of supports and hangers should be able to withstand the total load of the corresponding specifications and number of layers of pallets and ladder racks within the supporting span.
8 The ratio of the maximum deflection value of the cantilever bracket to its length when bearing the rated load of the pallet and ladder rack should not be greater than 1/100. 9 The load-bearing accessories such as connecting plates and connecting bolts should be consistent with the pallet, ladder rack, support bracket, etc. 7
Engineering Construction Standard Full Text Information System6
The center spacing of the straight crosspieces of the ladder frame and the center spacing of the 1/2 length of the curved crosspieces of the ladder frame should be 150~300mm; the width of the crosspiece should be 25~50mm. 5
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Common Specifications and Dimensions of Aluminum Bridge Frames (mm)
Note: The symbol △ indicates common specifications and dimensions
3.1.7 When the pallet and ladder frame need to be set up in multiple layers, the net distance between the layers of the support arm shall comply with the provisions of Article 4.2.3 of this Code. www.bzxz.net
3.1.8 The specifications and dimensions of various accessories and supports and hangers shall match the straight and curved series of pallets and ladder frames under the condition of meeting the corresponding loads. 3.2 Technical requirements
3.2.1 The materials used for aluminum bridges shall comply with the following provisions: 1 The extruded profiles for the sides and crosspieces of the aluminum bridges shall be made of aluminum alloy with the grade of 6063 (LD31), and its material properties shall comply with the standard of "Aluminum Alloy Building Profiles" GB/T5237. The supply state shall be T5 (RCS), and the accuracy level shall be ordinary. The extruded profiles for the supports and hangers shall be made of aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "Industrial Aluminum Alloy Hot Extrusion Profiles" GB6892. The supply state shall be H112 (R). When there are special requirements for the engineering conditions, the material shall be agreed upon by the supply and demand parties. 2 The aluminum alloy plates for aluminum bridges shall be made of aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "High-quality Aluminum and Aluminum Alloy Cold Rolled Plates" GB10569. The supply state shall be O (M) or HX4 (Y2). 6
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3Aluminum rivets for aluminum bridges shall comply with the standards such as "Technical Conditions for Blind Rivets" GB12615~12619.
4Welding wire for gas shielded arc welding shall comply with the standard "Aluminum and Aluminum Alloy Welding Wire" CB10858.
3.2.2The structure and bearing capacity of aluminum bridges shall meet the following requirements: 1Load level: Under the condition of supporting span of 2m and calculated as simply supported beam, the rated uniformly distributed load of pallets and ladders is divided into five levels, which shall meet the requirements of Table 3.2.2. Table 3.2.2 Load level
Load level
Rated uniformly distributed load kN/m
(kgf/m)
(50）
(250）
2The structure of pallets, ladder racks, and support and hanger racks shall meet the requirements of strength, rigidity and stability. The calculation method is shown in Appendix A.
3The load-bearing capacity of pallets and ladder racks shall be verified in accordance with the provisions of the load test in Appendix B. The uniformly distributed load when the side begins to become unstable or the initial permanent deformation occurs during the load test is the failure load. The value of the failure load divided by the safety factor of 1.5 is the allowable uniformly distributed load, which should not be less than the rated uniformly distributed load specified for the corresponding load level. 4The manufacturer shall provide a relationship curve or data table between different support and hanger spans and allowable uniformly distributed loads for pallets and ladder racks of various types and specifications. 5 The manufacturer should provide a curve or data table showing the relationship between the allowable uniformly distributed load and deflection of pallets and ladder racks of various types and specifications at different support spans. 6 The relative deflection of pallets and ladder racks when bearing the rated uniformly distributed load should not be greater than 1/150.
7 Various types of supports and hangers should be able to withstand the total load of pallets and ladder racks of corresponding specifications and number of layers within the support span.
8 The ratio of the maximum deflection value of the cantilever bracket to its length when bearing the rated load of the pallet and ladder rack should not be greater than 1/100. 9 Load-bearing accessories such as connecting plates and connecting bolts should be consistent with pallets, ladder racks, supports and hangers, etc. 7
Engineering Construction Standard Full Text Information System6
The center spacing of the straight crosspieces of the ladder frame and the center spacing of the 1/2 length of the curved crosspieces of the ladder frame should be 150~300mm; the width of the crosspiece should be 25~50mm. 5
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Common Specifications and Dimensions of Aluminum Bridge Frames (mm)
Note: The symbol △ indicates common specifications and dimensions
3.1.7 When the pallet and ladder frame need to be set up in multiple layers, the net distance between the layers of the support arm shall comply with the provisions of Article 4.2.3 of this Code.
3.1.8 The specifications and dimensions of various accessories and supports and hangers shall match the straight and curved series of pallets and ladder frames under the condition of meeting the corresponding loads. 3.2 Technical requirements
3.2.1 The materials used for aluminum bridges shall comply with the following provisions: 1 The extruded profiles for the sides and crosspieces of the aluminum bridges shall be made of aluminum alloy with the grade of 6063 (LD31), and its material properties shall comply with the standard of "Aluminum Alloy Building Profiles" GB/T5237. The supply state shall be T5 (RCS), and the accuracy level shall be ordinary. The extruded profiles for the supports and hangers shall be made of aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "Industrial Aluminum Alloy Hot Extrusion Profiles" GB6892. The supply state shall be H112 (R). When there are special requirements for the engineering conditions, the material shall be agreed upon by the supply and demand parties. 2 The aluminum alloy plates for aluminum bridges shall be made of aluminum alloy with the grade of 5052 (LF2), and its material properties shall comply with the standard of "High-quality Aluminum and Aluminum Alloy Cold Rolled Plates" GB10569. The supply state shall be O (M) or HX4 (Y2). 6
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3Aluminum rivets for aluminum bridges shall comply with the standards such as "Technical Conditions for Blind Rivets" GB12615~12619.
4Welding wire for gas shielded arc welding shall comply with the standard "Aluminum and Aluminum Alloy Welding Wire" CB10858.
3.2.2The structure and bearing capacity of aluminum bridges shall meet the following requirements: 1Load level: Under the condition of supporting span of 2m and calculated as simply supported beam, the rated uniformly distributed load of pallets and ladders is divided into five levels, which shall meet the requirements of Table 3.2.2. Table 3.2.2 Load level
Load level
Rated uniformly distributed load kN/m
(kgf/m)
(50）
(250）
2The structure of pallets, ladder racks, and support and hanger racks shall meet the requirements of strength, rigidity and stability. The calculation method is shown in Appendix A.
3The load-bearing capacity of pallets and ladder racks shall be verified in accordance with the provisions of the load test in Appendix B. The uniformly distributed load when the side begins to become unstable or the initial permanent deformation occurs during the load test is the failure load. The value of the failure load divided by the safety factor of 1.5 is the allowable uniformly distributed load, which should not be less than the rated uniformly distributed load specified for the corresponding load level. 4The manufacturer shall provide a relationship curve or data table between different support and hanger spans and allowable uniformly distributed loads for pallets and ladder racks of various types and specifications. 5 The manufacturer should provide a curve or data table showing the relationship between the allowable uniformly distributed load and deflection of pallets and ladder racks of various types and specifications at different support spans. 6 The relative deflection of pallets and ladder racks when bearing the rated uniformly distributed load should not be greater than 1/150.
7 Various types of supports and hangers should be able to withstand the total load of pallets and ladder racks of corresponding specifications and number of layers within the support span.
8 The ratio of the maximum deflection value of the cantilever bracket to its length when bearing the rated load of the pallet and ladder rack should not be greater than 1/100. 9 Load-bearing accessories such as connecting plates and connecting bolts should be consistent with pallets, ladder racks, supports and hangers, etc. 7
Engineering Construction Standard Full Text Information System
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