摘要
对1个现浇钢筋混凝土剪力墙试件和2个装配整体式剪力墙剪力墙试件进行拟静力试验,研究剪跨比为1.5的装配整体式剪力墙的抗震性能以及榫卯板构造对榫卯接缝的连接性能的影响。结果表明:榫卯接缝整体性良好,接缝开裂时试件位移角远大于1/1000;装配整体式剪力墙的破坏区域主要集中在榫卯接缝处,峰值荷载时墙体根部混凝土基本完好,承载力低于现浇钢筋混凝土剪力墙,但刚度退化速率小于现浇钢筋混凝土剪力墙,变形能力、累计耗能大于现浇钢筋混凝土剪力墙,峰值荷载后装配整体式剪力墙进入墙柱组合体受力阶段,承载力下降减缓,位移角达到1/25时仍保持水平和竖向承载力;榫卯板横向凹槽底部与竖向孔洞内侧是否平齐对墙体承载力基本没有影响,但平齐构造可延缓榫卯接缝破坏,有助于提高墙体的刚度和耗能能力。
The pseudo-static tests of one cast-in-situ reinforced concrete shear wall specimen and 2 assembled monolithic shear wall specimens were carried out to study the seismic behavior of the assembled monolithic shear wall with the shear span ratio of 1.5 and the influence of mortise-tenon structure on the connection performance of mortise-tenon joints.The results show that the mortise-tenon joint has good integrity,while the joints cracke,the displacement angle of specimens is much greater than 1/1000.The damage area of assembled monolithic shear wall mainly concentrate on the mortise-tenon joints,and under the peak load,the concrete at the root of the wall is basically intact,the bearing capacity of assembled monolithic shear wall is lower than that of the cast-in-situ reinforced concrete shear wall,but stiffness degradation rate is less than that of the cast-in-situ reinforced concrete shear wall,deformation behavior and cumulative energy dissipation are greater than that of the cast-in-situ reinforced concrete shear wall,after the peak load,the assembled monolithic shear wall enters the stress stage of the wall-column combination,which delays the decrease of the bearing capacity,and the horizontal and vertical bearing capacity remains when the displacement angle reaches 1/25.In addition,whether the inner side of vertical hole and the bottom of transverse groove is in the same plane has no effect on the bearing capacity of the wall,but when the structure’design is in the same plane,it can delay the damage of the mortise-tenon joints,which can help improve the stiffness and the energy dissipation of the wall.
作者
初明进
陈国尧
刘继良
曹春利
李祥宾
李爱群
CHU Mingjin;CHEN Guoyao;LIU Jiliang;CAO Chunli;LI Xiangbin;LI Aiqun(Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Shandong Aikefu Building Technology Co.,Ltd.,Yantai 264006,China;School of Civil Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《建筑结构》
CSCD
北大核心
2021年第9期7-14,共8页
Building Structure
基金
国家自然科学基金项目(51778034)
山东省自然科学基金(ZR2018PEE024)
北京市属高校基本科研业务费专项资金资助(X18179,X19003)。
关键词
装配整体式剪力墙
榫卯板
榫卯接缝
预制边缘构件
抗震性能
连接性能
assembled monolithic shear wall
wallboard with mortise-tenon joint
mortise-tenon joint
precast edge element
seismic behavior
connection performance
