How to accept the quantity of large steel structure projects
Date:2024-01-05
Views:71
Author:gaea
Projects that use steel structures as raw materials will definitely need to be inspected and accepted after completion. How to conduct steel structure engineering acceptance? The construction regulati···
Projects that use steel structures as raw materials will definitely need to be inspected and accepted after completion. How to conduct steel structure engineering acceptance? The construction regulations for steel structures must be implemented in accordance with the standards and cannot be sloppy. Every stage needs to be inspected.
Here is a brief introduction to the 8 standards for acceptance:
1. Strictly control the construction load of the roof, floor and platform, and do not exceed the load-bearing capacity of the beams, trusses, floor slabs and roof panels. After the space unit is formed, fine stone concrete should be poured in time in the gap between the floor of the column and the top surface of the foundation. , grouting, etc.
2. The specifications of positioning shafts, foundation shafts, heights, anchor bolts and other fasteners must comply with relevant design requirements. The allowable deviation of the height of the foundation support surface is 3 mm, the center deviation of the anchor bolts is 5 mm, and the allowable deviation of the center of the reserved hole is 3 mm. The value is 10 mm, and the allowable deviation of the exposed length of the anchor bolt is 0-30 mm.
3. The acceptance specifications for steel structure projects stipulate that the contact surface should be at least 70% of the entrance joint, and the distance between side joints should not exceed 0.8 mm.
4. After the components enter the construction site, promptly check the appropriate height tolerances of the longitudinal and transverse bending of the steel trusses and compression members, check the longitudinal and transverse displacement deviations of the steel columns and the verticality of the columns. Multi-section columns also need to be within the allowable deviation value.
5. The vertical deviation of the steel structure building crane beam is within 1/5 of the total height of the crane, and the allowable deviation of the lateral bending vector height is within 1/1500.
6. Installing the steel structure frame requires the use of wind ropes, winches and other tools to ensure its stability. After all installations are completed, a series of support systems such as column supports, tie rods, and horizontal roof supports must be installed promptly. If possible, roof purlins can be installed. These are for the stability of the entire steel frame.
7. It is also necessary to check the roof braces, diagonal braces, diagonal braces and support sleeve connections to see whether the wall braces, diagonal braces and support connections are installed. Also check the connections and number of steel columns.
8. Check the location and number of horizontal supports, rigid tie rods, and pillar support connections on the roof in a timely manner.
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