钢连梁-钢板混凝土组合剪力墙组合件抗震性能试验研究  

Experimental study on seismic performance of subassemblies composed of steel coupling beam and steel plate-concrete composite shear wall piers

作　　者：刘阳[1,2] 郭子雄[1,2] 陈海 林浩 苗伟 LIU Yang;GUO Zixiong;CHEN Hai;LIN Hao;MIAO Wei(College of Civil Engineering,Huaqiao University,Xiamen 361021,China;Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]华侨大学福建省结构工程与防灾重点实验室,福建厦门361021

出　　处：《建筑结构学报》2021年第3期41-49,共9页Journal of Building Structures

基　　金：国家自然科学基金项目(51378228,51878303);福建省泉州市科技计划(2018Z013)。

摘　　要：为进一步提高联肢剪力墙结构的抗震性能,提出了一种改进型钢连梁-钢板混凝土组合剪力墙混合结构。通过对5个1/2缩尺连梁-墙肢组合件的低周往复加载试验,研究了钢连梁跨高比和加劲肋布置等因素对组合件抗震性能的影响。研究表明:组合件塑性变形均集中在易更换的钢连梁上,墙肢和节点部位损伤程度较低,有利于实现结构罕遇地震作用后的功能快速恢复;小跨高比(小于2)钢连梁发生整体的剪切屈服型破坏,可以更充分发挥连梁的整体塑性变形能力,具有比弯曲破坏型组合件更优越的抗震性能;所有组合件均具有优异的变形能力和稳定的滞回耗能性能;1/10位移角下,组合件承载力最大衰减量小于10%;加劲肋间距减小,可延缓钢连梁腹板和翼缘的压曲,提高组合件承载力和滞回耗能能力。A new type of hybrid structure composed of steel coupling beams and steel plate-concrete composite shear walls was proposed to further improve the seismic performance for coupled wall structural system. Five half-scaled subassemblies were tested under cyclic loading to investigate the influence of span depth ratio of steel coupling beams and stiffeners configuration on the seismic performance of specimens. It is indicated that plastic deformation is almost concentrated on the steel coupling beams while the composite wall piers,including the joint area,suffer only minor damages,which is advantageous for the fast recovery of building functionality after earthquake. Steel coupling beams with span depth ratio less than 2. 0 fail in a global shear mode and develope ample plastic deformation,which results in better seismic performance than specimens with flexural failure modes. All specimens exhibit excellent deformation capacity and stable hysteretic performance. The maximum strength deterioration of specimens under drift ratio of 0. 1 is no more than 10%. The buckling of flanges and webs of steel coupling beams could be postponed by the use of stiffeners. The load carrying capacity and energy dissipated capacity of specimens increase with the decrease of the space of stiffeners.

关 键 词：钢连梁-钢板混凝土组合剪力墙 组合件 拟静力试验 抗震性能 

分 类 号：TU398.2[建筑科学—结构工程] TU317.1