Construction organization design scheme of grid structure engineering design?

What are the specific contents of the grid structure engineering design and construction organization design scheme? Zhong Da Consulting will answer your questions below.

The first part, technical specifications

The first chapter, technical specifications

I. Scope of the project

Design, manufacture, packaging and transportation of foundation and grid structure, civil construction (including foundation treatment and testing) and grid installation.

Second, the technical requirements

1, coal shed length 150m, length 102m. Grid positioning: it is located at the northern end of the coal yard, with the central axis consistent with the coal shed (90× 108m) of the first phase project, and the southern end is about 300m away from the first phase coal shed. The walking range of the bucket wheel is within the coverage of the grid. The structural form and color decoration are consistent with the first phase coal shed. throw

2. The design and construction of the grille shall be carried out in strict accordance with the following specifications:

Code for design and construction of space truss structures JGJ7-9 1

Code for Design of Steel Structures GB 500 17-2003

Industry standard of steel grid structure JGJ75. 1-75.3-9 1

GB/T6939 "High Strength Bolts for Bolted Spherical Joints of Steel Grid Structures"

Standard for Quality Inspection and Evaluation of Steel Structure Engineering GB 5022 1-95

Standard for quality inspection and evaluation of grid structure engineering JGJ 78-9 1

Code for welding of building steel structures JGJ8 1

Code for Ultrasonic Inspection of Welds of Steel Grid Structures and Acceptance of Steel Structure Engineering (GB 50205-95)

And shall comply with the relevant existing national and industry standards and norms.

3, material requirements:

(1), steel pipe: frequency modulated welded pipe or seamless steel pipe is selected, and butt joint is not allowed in the middle.

(2) Steel pipe brand: Q235 steel in GB700 is selected.

(3) Material requirements of steel pipe: negative error of wall thickness ≤-5%, only local error is allowed, and no systematic negative error can be formed.

(4) High-strength bolt: the material is 40Cr in GB3077, and the grade conforms to GB/T 16939.

(5) Bolt ball: the material is 45 steel in GB699.

(6) Cone head of sealing plate: all steel bars are connected by cone head, which is made of Q235 steel. The connecting weld and any cross section of the cone head should be equivalent to the strength of the connected steel pipe, and the thickness should meet the requirements of strength and deformation, and the test report should be provided.

(7) Sleeve: Q235 steel is selected as the material, and 45 steel is selected when the corresponding high-strength bolt is greater than 33 mm ..

(8) covered electrode: E43 is selected as the material.

All materials have quality certificates and acceptance reports, steel balls must be marked with work numbers, all weldments should be marked with welder's work numbers, and the quality of all products should comply with JGJ75.

(9) Roof plate: Single-layer galvanized profiled steel plate V125 (YX35-125-750) is adopted, and its basic data are as follows: plate thickness is 0.53mm, effective coverage width is 750mm, unfolded width is 1000mm, and section moment of inertia is 65438+.

(10), and provide the following documents and materials:

Materials, origin, manufacturers and national standards of raw materials such as bars, bolt balls, high-strength bolts, color steel plates and sleeves.

Quality assurance measures, testing equipment and means of raw materials.

Provide quality, safety (construction safety and use safety) and warranty commitment.

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