What is the construction process of steel structure project

Process of steel structure project　　

Construction preparation → raw material picking, inspection, into the factory → material → production → inspection and correction → pre-assembly → rust removal → brush anti-rust paint a → finished product inspection number → member transportation → pre-buried parts re-inspection → steel column lifting → steel beam lifting → purlin, support system installation → main body preliminary inspection → painting → roof panel installation → wall panel installation → door and window installation → acceptance.

Transportation and stacking　　

A. To survey the road in advance, choose the type of transport vehicle, and adopt the way of on-site assembly for the components that are inconvenient to transport. When loading and unloading, take certain measures for the components that are easily deformed. Protect the paint surface of the components when loading and unloading.　　

B. The stacking site should be solid, flat and well drained.　　

C. The components should not be placed directly on the ground, but should be cushioned above 200 and placed smoothly on the supports, and the distance between the supports should be limited so that the components do not produce residual deformation.　　

D. The stacking position of the components should take into account the order of installation on site.

Installation of steel members　　

A. Check the specification, positioning size, elevation and exposed length of the pre-buried bolts, and check the age of the concrete of the pre-buried parts. Check and verify the consistency between the numbering of the components on site and the design against the drawings to prevent mis-installation.　　

B. Survey the operation site, determine the crane walking route, and formulate the lifting implementation plan.　　

C. When installing high-strength bolts, the bolts should be free to penetrate into the holes, not to expand the holes at will, and high-strength bolts cannot be used instead of temporary bolts.　　

D. Select 16T wheeled crane as lifting machinery.　　

E. The steel column is lifted by one point or two points, temporarily fixed after in place, and finally fixed after correction.　　

F. Steel beam adopts two-point lifting method, the lifting point should be determined in advance before lifting and test lifting should be carried out to guarantee its stability. The steel beam is temporarily fixed after lifting, and finally fixed after installation of horizontal support and after review of verticality.

G. After the installation of the whole frame, the installed frame should be checked again to confirm the correctness of the installation of all components, whether the connections Whether all have been fastened, and whether the overall curvature is within the deviation specified in the specification.

H. After the steel frame is verified, the civil construction unit should cooperate with the timely pouring of the column base plate concrete, which should be expanded concrete. The top coating construction of steel members can also be implemented.

From the above, we can find that the process of steel structure engineering is divided into many steps, and each process has its own requirements. In order to ensure the safety of the project, we must strictly follow the specifications for the construction.