DYNAMIC RESPONSE ANALYSIS OF COLD-FORMED THIN-WALLED STEEL HOUSING BASED ON DIAPHRAGM EFFECT

Five groups of FE models for two-story of cold-formed thin-walled steel housing were built by combining with the practical projects. The large finite element software ANSYS,it was used to analysed 5 groups of structure models,and also study the openning and retaining wall effects on the natural frequency of the whole structure. The 8degrees seismic waves were input to analyse time history,and the transient displacement curve was got,elastic angular displacement between the layers under the action of 8 degrees common earthquake was calculated. Research showed that the openning reduced the whole lateral stiffness of the structure,the cold-formed thin-walled steel frame without wallboard could not meet the first level fortification goal under the effect of 8 degrees common earthquake.Wallboard had a good skin effect to the whole structure,which could effectively improve the integral rigidity and control displacement of structure. OSB board as wallboard had a good seismic behavior,which provided the reference for the design of rural cold-formed thin-walled steel building structure.