双肢空腹式型钢高强混凝土短肢剪力墙抗震性能试验研究  

Experimental study on seismic performance of coupled lattice steel reinforced high-strength concrete short-leg shear walls

作　　者：柯晓军[1,2] 苏益声 王晓燕[1] KE Xiaojun;SU Yisheng;WANG Xiaoyan(Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Disaster Prevention and Engineering Safety,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院工程防灾与结构安全教育部重点实验室,广西南宁530004 [2]广西防灾减灾与工程安全重点实验室,广西南宁530004

出　　处：《地震工程与工程振动》2020年第3期71-77,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51668007,50968003);广西自然科学基金项目(2018GXNSFAA050007)。

摘　　要：通过一榀型钢混凝土梁连接的空腹式型钢高强混凝土短肢剪力墙模型的拟静力试验,考察该类双肢墙的抗震性能及破坏机制。试验结果表明:试件从型钢高强混凝土连梁屈服形成塑性铰,再到墙肢屈服发生破坏,呈现出强墙肢弱连梁的破坏机制,但破坏过程中仍具有较强的脆性特征;试件延性系数、耗能等效黏滞阻尼系数为4.15和0.170,表明该类结构具有较好的抗震变形及耗能能力;当水平位移比Δ/Δy=2时,试件剩余刚度只有初始刚度的23.6%,表明该类结构在连梁遭受地震损伤后的刚度退化严重,抗侧稳定性变差。To reveal the failure mechanism and seismic performance of coupled SRHC short-leg shear walls,the quasi-static test was conducted for one specimen of coupled lattice SRHC shear walls with SRC coupling beam.Test results indicate that the specimen first yield from the coupling beam and then the wall limbs destroy,which can realize the type of strong wall weak beam,but it still has strong brittleness during the failure process.The ductility coefficient and energy dissipation equivalent viscous damping coefficient of the specimen is 4.15 and 0.170,respectively,which indicate that this kind of double shear walls has good seismic deformation and energy dissipation capacity.When the horizontal displacement ratio(Δ/Δy)reaches 2,the residual stiffness of the specimen is only 23.6%of the initial stiffness,which indicates that the stiffness of this structure after the coupling beam yielding degrades seriously and the lateral stability becomes worse.

关 键 词：短肢剪力墙 型钢混凝土 空腹式 抗震性能 拟静力试验 

分 类 号：TU398[建筑科学—结构工程]