Study on influence of light steel keel-aluminum honeycomb composite wallboard on seismic performance of steel frame structure
A new type of light steel keel composite wallboard structure with aluminum honeycomb composite board as the cladding board was proposed.In order to explore its effect on the seismic performance of steel frame structure,the quasi-static loading test was carried out on the steel frame-light steel keel-aluminum honeycomb composite wallboard specimen.The cracking and failure of the composite wallboard during the loading process and the overall failure mode of the structure were analyzed.The seismic performance of the steel frame-light steel keel-aluminum honeycomb composite wallboard structure under monotonic load was discussed.In addition,through the finite element software MSC.Marc platform,the numerical simulation analysis of the specimen was carried out to check the finite element model and determine the calculation parameters of the lateral stiffness of the composite wallboard.The actual four-story steel frame structure was modeled and time-history analysis was carried out.The change of maximum inter-story displacement angle and the total base shear force of the steel frame structure before and after the addition of the composite wallboard were investigated.The influence of the composite wallboard on the seismic response of the steel frame structure was analyzed.The results show that due to the influence of composite wallboard,the lateral stiffness of steel frame structure increases and the period decreases,which leads to the increase of seismic response.However,the increase of seismic response is less than the increase of lateral stiffness,so the maximum inter-story displacement angle of each layer is still generally reduced,which meets the limit requirements.
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