| Due to the frequent explosiveness of earthquake disasters,relying on the performance of the structure itself to resist earthquake can no longer meet the needs of practical projects in the traditional sense.Using structures and energy dissipation together to resist earthquake action is a more active and effective method.Under these circumstances,a new type of energy dissipation component named buckling-restrained steel plate shear wall appears owing to the shortage of general steel wall.This new type of seismic component is currently used in many new construction and reinforcement projects.Tests and related theoretical studies show that BRW has better energy dissipation and load capacity than ordinary steel wall.In terms of structural arrangement,BRW does not affect the use requirements of building functions.Based on previous studies,this article has carried out the following research work:(1)This paper first briefly introduces the basic construction principle of the buckling restrained steel shear wall.The characteristics of the structure are highlighted,and the calculation method of the initial stiffness and design strength of the buckling restrained steel plate shear wall are discussed.In addition,the basic principles and calculation formulae for simplifying the equivalent brace in engineering design are given.(2)Modal analysis and response spectrum analysis of structure model are conducted by using SAP2000,compared with model of BRW.The analysis results show that the structure of BRW can effectively increase the stiffness of the structure under frequent earthquake,and inter-story displacement angle is significantly reduced.Through the elastic time history analysis of the two structures in frequent earthquake,the results show that the X-direction reduction of the structure with BRW in the top displacement,inter-story displacement angle is greater than the Y direction.(3)In order to study the energy dissipation mechanism of BRW under large earthquakes,Midas/building software was used to conduct inelastic analysis of the two structures under rare earthquakes.The analysis results show that the overall performance of the BRW frame structure is better than that of the original structure.The steel plate wall can yield first under the earthquake action,effectively dissipate seismic energy and ensure the safety of the main structure.(4)Finally,a comparison is made between the buckling restrained brace and the buckling restrained steel shear wall.The main contents are basic structure,design method,and construction method.The comparison results show that the buckling restrained steel plate shear wall is more advantageous than the buckling restrained brace in terms of structural arrangement and does not affect the function of the building.In terms of design,the buckling restrained brace adopts a solid model,while the buckling restrained steel plate shear wall adopts an equivalent brace model. |
