- 摘 要
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（1 北京建筑大學(xué)北京未來城市設(shè)計高精尖創(chuàng)新中心， 北京 100044；2 山東艾科福建筑科技有限公司， 煙臺 264006；3 大連理工大學(xué)土木工程學(xué)院， 大連 116024）
［摘要］完成了3個榫卯連接裝配整體式剪力墻試件在恒定軸力作用下的擬靜力試驗。研究了剪跨比對墻體受力性能的影響，揭示了墻體的破壞過程和破壞形態(tài)。試驗結(jié)果表明：墻體沿橫向凸起根部所在豎向截面形成宏觀豎向裂縫，干擾了斜裂縫發(fā)展；剪跨比1.0的低矮墻未發(fā)生剪切破壞，各墻體極限位移角均大于1/50，位移延性系數(shù)均大于5，具有良好的變形能力；榫卯接縫構(gòu)造合理，墻體整體性良好，開裂位移角均大于1/500；提高剪跨比，墻體的承載力降低，變形能力提升，宏觀豎向裂縫發(fā)展以及墻體剛度衰減延緩；墻體破壞區(qū)域主要集中于宏觀豎向裂縫位置，墻體根部混凝土壓潰區(qū)域明顯減小，位移角大于1/35時仍具有良好的豎向承載力。
［關(guān)鍵詞］裝配整體式剪力墻；榫卯式接縫；剪跨比；受力性能
中圖分類號：TU973-1+6，TU317+.1文獻(xiàn)標(biāo)識碼：A文章編號：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
*國家自然科學(xué)基金項目(51778034)，山東省自然科學(xué)基金(ZR2018PEE024)，北京市屬高?；究蒲袠I(yè)務(wù)費專項資金資助（X18179,X19003）。
作者簡介：孫志娟，碩士，副教授，Email: sunzhijuan0@163.com；通信作者：初明進(jìn)，博士，教授，博士生導(dǎo)師，Email: chumingjin@bucea.edu.cn。
