Study On Aseismic System Of Cellular Beam Steel Frame

The cellular composite beam structure combines the cellular beam and the concrete floor together by the shear connector to resist the external force and make full use of the superior performance of the two kinds of building materials of steel and concrete.At present,the research on the seismic behavior of cellular steel frame considering the effect of concrete slab at home and abroad needs to be further deepened,which is not conducive to the use and promotion of cellular structures.In order to further understand the seismic performance of the cellular beam steel frame considering the effect of concrete slab under earthquake action,the evaluation index of the structural failure stage based on the performance point is proposed and the nonlinear seismic analysis method of the cellular beam steel frame structure based on the cellular beam component level is established.This article has done the following research work:Combining the pseudo-dynamic test with finite element simulation,the finite element software ABAQUS is used to establish the cellular beam space frame structure and carry out different seismic wave loading.By comparing the modal analysis,the displacement time history curve and the shear time history curve of the finite element simulation,the accuracy and rationality of the model are validated,which lays the foundation for the follow-up dynamic elasto-plastic analysis of the steel frame structure of cellular.Using the incremental dynamic analysis(IDA)method combined with the pseudo dynamic test results,a finite element model of multi-cell cellular beam steel frame structures with different open porosity was established.Elasto-plastic dynamic time-history analysis and incremental dynamic analysis(IDA)analysis were performed on steel frame structures of cellular beams with floor effect under different earthquake vibrations.The steel frame structure of cellular beams was studied by comparing with ordinary steel frame structures.The failure modes and seismic performance of different seismic waves and different earthquakes.According to the incremental dynamic analysis(IDA)results,the seismic vulnerability curve of the structure is drawn,and the seismic vulnerability analysis method is used to calculate the probability that the cellular beam steel frame structure will reach different damage levels under different earthquake action levels.Combining with the results of the team study,a series of reasonable parameters such as the opening ratio of the cellular beam structure,the position of the opening,the ratio of the height ratio of the expansion ratio,and the collapse-resistant safety reserve coefficient were proposed to establish a reasonable anti-seismic system for the cellular steel beam frame,which is the structure of the cellular beam structure.Seismic design,reinforcement,and loss assessment of earthquake disasters after earthquake provide some reference.