平-波折钢板剪力墙往复加载试验及抗侧性能分析  

HYSTERETIC EXPERIMENTAL STUDY AND LATERAL PERFORMANCE ANALYSIS OF FLAT-CORRUGATED STEEL PLATE SHEAR WALLS

作　　者：窦超 杨潇 解程 杨娜[1] DOU Chao;YANG Xiao;XIE Cheng;YANG Na(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment,Beijing 100044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]结构风工程与城市风环境北京市重点实验室,北京100044

出　　处：《工程力学》2024年第8期164-175,共12页Engineering Mechanics

基　　金：北京市自然科学基金项目(8232011);国家自然科学基金项目(52378119)。

摘　　要：该文结合普通平钢板墙(FPSW)和波折钢板墙(CPSW)的受力特点,提出了一种新型平—波折钢板剪力墙(FCPSW),即内嵌墙板由两侧平钢板和中间波折钢板通过单边螺栓连接而成。开展了宽高比为1.5的平—波折钢板剪力墙试件的低周往复加载试验,揭示了其抗侧承载力性能、破坏形式及多层钢板间的组合机制;采用有限元方法对上述滞回试验进行了模拟,通过施加螺栓垫板对平—波折墙板进行了改进,并与相应的单片平钢板墙、单片波折钢板墙的抗侧性能进行对比分析;考察了平—波折钢板剪力墙体系的板框相互作用,包括边缘框架柱附加弯矩和抗弯刚度要求以及竖向荷载的影响。试验发现:平—波折钢板剪力墙结构在循环加载到5%层间位移角时,未出现明显承载力下降;内嵌墙板呈现多波屈曲,部分连接螺栓脱落后仍能够继续发挥抗侧能力。不同墙板有限元滞回分析对比表明:平—波折剪力墙依靠平钢板和波折钢板之间的相互作用,屈曲变形得到限制,既提高了初始抗侧刚度,又保证了后期承载力的稳定,减小了滞回曲线捏拢现象。同时,板框相互作用分析表明:平—波折钢板墙中由于平钢板和波折墙板的面外屈曲被约束,其边缘框架受到的附加弯矩作用显著减小,抗弯刚度需求小于相应的平钢板剪力墙,且竖向荷载影响亦小于相应的普通单片平钢板或波折钢板剪力墙,表现出较为优越的抗侧性能。Based on the advantages of ordinary flat plate shear walls(FPSWs)and of corrugated plate shear walls(CPSWs),a new type of flat-corrugated plate shear wall(FCPSW)is proposed,in which the infill panel consists of two flat panels on both sides and a corrugated panel connected by bolts in the middle.A specimen of FCPSW with a width-to-height ratio of 1.5 was designed and tested by cyclic loading,and the lateral performance,failure mode and,the collaborate lateral resistant mechanism between the flat and corrugated panels were revealed.The finite element method(FEM)was utilized to simulate the test,in which the lateral performance of FCPSWs was improved by applying the gasket plates to the bolt connection.Meanwhile FCPSWs were compared with the corresponding FPSWs and CPSWs pertaining to the lateral resistant behaviour.The wall-frame interaction in FCPSW system was investigated,including the additional bending moment to the boundary frame,the flexural rigidity requirement for the boundary frame columns,and the effect of vertical load.The test results show that:although multi-wave buckling occurred over the outer flat panel,and some bolts were detached from the panel,the lateral resistance of FCPSWs was still stable even with the storey drift angle increased to 5%.Comparison by FEA of different types of shear walls shows that:due to the interactive restraint between the flat panels and the corrugated panel,both buckling and deformation of the infill panel in FCPSWs are significantly reduced,which consequently results in high initial lateral stiffness and stable post-buckling resistance and reduces pinching in the hysteresis curve.The wall-frame interaction analysis shows that:due to the out-of-plane buckling of the flat panel and the corrugated panel being restrained,the additional bending moment acting on the boundary frame of FCPSWs is remarkably decreased.Generally,FCPSWs achieve a good lateral performance,and with flexural rigidity requirement less than that of the corresponding FPSWs,the vertical load effect is al

关 键 词：平—波折钢板剪力墙 滞回试验 残余承载力 抗侧性能 板框相互作用 

分 类 号：TU393.2[建筑科学—结构工程]