新型箱式集成房顶框组件力学性能研究OA

This paper describes a new type of container assembling house roof frame assembly made of prefabricated lightweight steel components connected with bolts.In order to study its structural performance,a full-scale bearing capacity test was carried out on the assembly,the change rule of displacement and strain under different loading levels was analyzed,and the mechanism of force transmission and failure modes were investigated.The test results show that the roof frame assembly of the new container assembling house has a high load-bearing capacity.The failure mode of the tested specimen is mainly manifested as follows:while the main beam on the long side undergoes bending and torsion deformation,the secondary beam on the short side undergoes buckling damage.Using ABAQUS finite element software,a finite element model was established to compare the load-displacement curves at each key position,and the finite element model results were consistent with the test results.Based on the verified finite element model,the influencing factors such as the cross-sectional thickness of long-side primary beams and short-side secondary beams,the spacing of short-side secondary beams,the strength of steel,and the joint connection form of primary and secondary beams were parametrically analyzed.The results show that increasing the section thickness of long-side main beams and short-side secondary beams,reducing the spacing of short-side secondary beams,improving the strength of short-side secondary beams,and optimizing the joint connection forms of main and secondary beams can improve the load carrying capacity of the top frame assembly.