| In this paper,according to the demand of high-rise buildings in high-intensity earthquake area for high-performance lateral force resisting system,on the one hand,a systematic experimental study on the ordinary single corrugated steel plate shear wall(CPSW)was carried out.Then,based on lots of finite element analysis(FEA),optimal recommended configuration of infill panel and design method of structural system were also studied.On the other hand,a new type of flat-corrugated composite plate shear wall(FCPSW)is proposed to replace the corrugated plate shear wall(CPSW)with large aspect ratio which is difficult to optimally design.Comparative hysteretic test between FCPSW and CPSW was carried out,and the effects of various parameters on the lateral resistance of novel FCPSW were summarized based on FEA.Two series of tests results and practical design method proposed in this paper provide guidance for the application of CPSW and FCPSW lateral force resisting systems in engineering practice.Firstly,in order to clarify the mechanism of various combinations of strong or weak infill corrugated panel and boundary frame with strong or weak bending stiffness,hysteretic test was carried out on three typical CPSW specimens of strong frame-strong panel(S-S),weak frame-strong panel(W-S)and strong frame-weak panel(S-W),and then deformation development of plate and failure mode of the three specimens were revealed.By comparing the hysteretic curve and frame strain,the lateral resisting mechanism namely the effect on hysteretic performance of three combinations is clarified.The finite element method(FEM)is used to accurately simulate the test hysteretic curve and failure mode,which also establishes foundation for subsequent numerical analysis.Then,taking the frame-panel combination with the best lateral resistance performance in above test as the optimization idea,by analyzing the influence law of the configuration parameters of the corrugated panel,the hysteretic optimal configuration method of the corrugated panel and the design idea of boundary frame are proposed,which can realize the lateral resistance mechanism of in-plane shear yield of infill panel and the superior seismic performance of structural system.Afterwards,based on the fact that the single horizontal corrugated panel with large aspect ratio is difficult to optimize,so the new type of flat-corrugated composite plate shear wall is proposed.Through the comparative hysteretic test between FCPSW and CPSW under the aspect ratio of 1.5,the difference of out-of-plane deformation,hysteretic curves and frame strain between FCPSW and CPSW is investigated.The composition mechanism of the novel steel plate shear wall is revealed,and its lateral resistance advantage is clarified.Then,the accuracy of the FEM is verified.Finally,the applicable range of the aspect ratio of CPSW and FCPSW is discussed.Through a large number of numerical examples of monotonic pushover,the effects of material strength,bolt layout,thickness distribution and aspect ratio of FCPSW are clarified.The optimal selection suggestions and boundary frame design method of flatcorrugated composite shear walls are proposed,which meets the requirements of lateral bearing capacity,ductility and energy dissipation capacity of plate with large aspect ratio. |
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