（1 北京建筑大学北京未来城市设计高精尖创新中心， 北京 100044；2 山东艾科福建筑科技有限公司， 烟台 264006；3 大连理工大学土木工程学院， 大连 116024）

［摘要］完成了3个榫卯连接装配整体式剪力墙试件在恒定轴力作用下的拟静力试验。研究了剪跨比对墙体受力性能的影响，揭示了墙体的破坏过程和破坏形态。试验结果表明：墙体沿横向凸起根部所在竖向截面形成宏观竖向裂缝，干扰了斜裂缝发展；剪跨比1.0的低矮墙未发生剪切破坏，各墙体极限位移角均大于1/50，位移延性系数均大于5，具有良好的变形能力；榫卯接缝构造合理，墙体整体性良好，开裂位移角均大于1/500；提高剪跨比，墙体的承载力降低，变形能力提升，宏观竖向裂缝发展以及墙体刚度衰减延缓；墙体破坏区域主要集中于宏观竖向裂缝位置，墙体根部混凝土压溃区域明显减小，位移角大于1/35时仍具有良好的竖向承载力。

［关键词］装配整体式剪力墙；榫卯式接缝；剪跨比；受力性能

中图分类号：TU973-1+6，TU317+.1文献标识码：A文章编号：1002-848X(2021)09-0023-07

Experimental study on mechanical behaviors of assembled monolithic shear walls with mortise-tenon joints under different shear span ratio

SUN Zhijuan1, CAO Chunli1,2, LIU Jiliang3, LI Xiangbin1, CHEN Guoyao1, CHU Mingjin1

(1 Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2 Shandong Aikefu Building Technology  Co., Ltd., Yantai 264006, China; 3 School of Civil Engineering, Dalian University of Technology, Dalian 116024, China)

Abstract:Quasi-static tests of three assembled monolithic concrete shear walls with mortise-tenon joints were completed under constant compression load. The effects of the shear span ratio on mechanical behaviors of the wall had been studied and the failure process and mode were revealed. The test results show that the wall forms macroscopic vertical cracks along the vertical section of convex roots of the mortise-tenon slabs, which disturbed the development of diagonal cracks. The low-rise wall with the shear span ratio of 1.0 did not occur shear failure. The ultimate displacement angle of each wall is larger than 1/50 and the displacement ductility ratio is larger than 5.0, the walls have adequate deformability. The structure of mortise-tenon joints is reasonable and the wall integrity is good, and the cracking displacement angle is larger than 1/500. Increasing the shear span ratio of the wall lead to the reduction of the bearing capacity, and improvement of deformability, which delays the development of macroscopic vertical cracks and the stiffness attenuation of the wall. The failure area of the wall is mainly concentrated in the macroscopic vertical crack position, which obviously reduces the crushing area of the concrete at the root of the wall. The wall still maintains good vertical bearing capacity when the displacement angle is greater than 1/35.

Keywords:assembled monolithic shear wall; mortise-tenon joint; shear span ratio; mechanical behavior

*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）。

作者简介：孙志娟，硕士，副教授，Email: sunzhijuan0@163.com；通信作者：初明进，博士，教授，博士生导师，Email: chumingjin@bucea.edu.cn。