高强钢筋高强混凝土短肢剪力墙抗震性能试验研究与数值模拟分析  

Experimental study and numerical simulation analysis of seismic performance of high-strength steel bar and high-strength concrete short-limb shear wall

作　　者：何尧琼 张品乐[1] 贾毅 陶忠[1] 刘俊雄 张淦 HE Yaoqiong;ZHANG Pinle;JIA Yi;TAO Zhong;LIU Junxiong;ZHANG Gan(Institute of Civil Engineering, Kunming University of Science and Technology, Kunming 650500, China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《地震工程与工程振动》2021年第5期238-248,共11页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(52168069,52068037)。

摘　　要：通过对6个L形和6个一字形高强钢筋高强混凝土短肢剪力墙进行拟静力试验和OpenSees有限元模拟相结合的方法,研究构件的抗震性能,得到试件的破坏形态及滞回曲线,骨架曲线,承载力等性能指标,并模拟分析了同高厚比下试件的轴压比依次从0.1增加到0.6,的抗震性能。结果表明:在低周往复荷载作用下试件主要为弯剪破坏;OpenSees能较好的模拟高强钢筋高强混凝土短肢剪力墙的弹塑性行为,试验结果与数值模拟结果吻合较好;采用高强钢筋高强混凝土使试件承载力显著提高,极限位移增大;承载力随轴压比提高,但高轴压比下腹板受压时易造成试件的迅速破坏,承载力迅速降低,提高配箍率使试件承载力提高,且能延缓试件端部损伤,提高试件后期的塑形变形能力。6 L-shaped and 6 straight-shaped short-leg shear walls using high-strength steel bars and high-strength concrete is designed,the seismic performance of the specimens is studied by combining the pseudo-static test study with Opensees finite element simulation.And the failure form and hysteretic loops,bearing capacity and other performance indicators of the specimens are obtained,seismic performance of specimens with axial compression ratio increased successively from 0.1 to 0.6 is analyzed under the same height-thickness ratio.The results show that:the failure mode of the specimens under the action of low-cycle reciprocating load is mainly bending-shear failure.OpenSees can better simulate the elastoplastic behavior of high-strength steel and high-strength concrete short-leg shear walls,the results given by numerical simulation agree well with the experiment results;The bearing capacity and ultimate displacement of high-strength steel bars and high-strength concrete specimens are significantly improved;Load capacity increases with axial compression ratio,but the high axial compression ratio is likely to cause the test piece to be quickly destroyed when the web is compressed,and the bearing capacity decreases rapidly;Increasing the stirrup ratio improves the bearing capacity of the specimens,and can delay the end damage of the specimen and improve the later plastic deformation ability of the specimen.

关 键 词：OPENSEES 高强钢筋 高强混凝土 拟静力试验 轴压比 配箍率 

分 类 号：TU375[建筑科学—结构工程]