(1 同济大学土木工程学院建筑工程系, 上海 200092; 2 中国建筑股份有限公司,北京 100029; 3 中国建筑第八工程局有限公司, 上海 200112)

摘要: 为探究带窗洞的竖向分布钢筋不连接装配整体式剪力墙( SGBL 装配整体式剪力墙) 的受力性能,采用ABAQUS 软件建立 SGBL 装配整体式剪力墙精细化有限元模型. 有限元模型采用 Cohesive 接触和弹簧单元模拟预制墙板与后浇混凝土的拼缝,模拟所得荷载-位移曲线及破坏模式与文献中试验结果均吻合良好. 在此基础上,对比了带窗洞 SGBL 装配整体式剪力墙与带窗洞现浇剪力墙受力性能的差异,并讨论了轴压比和洞口偏心等参数对带窗洞 SGBL 装配整体式剪力墙的承载力和刚度的影响. 结果表明:通过适当增加边缘现浇段竖向钢筋,带窗洞SGBL 装配整体式剪力墙可拥有等同带窗洞现浇剪力墙的承载力. 此外,轴压比对两类开洞剪力墙受力性能影响均较小,洞口偏心对带窗洞 SGBL 装配整体式剪力墙的承载力影响较小,当洞口偏心率小于 20%时,洞口偏心对刚度的影响小于 8%.

关键词: SGBL 装配整体式剪力墙; 带窗洞剪力墙; 竖向分布钢筋不连接; 抗侧性能; 有限元分析

中图分类号:TU318,TU398. 2 文献标志码:A 文章编号:1002-848X(2023)05-0030-06

DOI:10. 19701 / j. jzjg. 20221381

Study on mechanical behavior of monolithic assembled concrete shear wall with non-connected vertical distribution reinforcement and window opening

SONG Xiaobin1, CAI Qi1, XIAO Xuwen1,2, CAO Zhiwei1, LI Chang3, ZHANG Shiqian3

(1 Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;2 China State Construction Engineering Co. , Ltd. , Beijing 100029, China; 3 China Construction EighthEngineering Division Co. , Ltd. , Shanghai 200112, China)

Abstract: To investigate the mechanical behavior of monolithic assembled concrete shear wall with non-connectedvertical distribution reinforcement ( SGBL monolithic assembly shear wall) and window opening, a refined finiteelement model was developed in ABAQUS software. In the finite element model, Cohesive contact and springconnector were adopted for simulating the nonlinear behavior of the joints between precast wall panels and post-castconcrete. The load-displacement curves and the failure patterns obtained from the numerical analysis are in goodagreement with the test results in literature. Based on the numerical model, the differences of mechanical behaviors ofSGBL monolithic assembled shear wall with window opening and cast-in-situ shear wall with window opening, and theinfluence of parameters such as the axial compression ratio and the eccentricity of the window opening on the bearingcapacity and rigidity of the SGBL monolithic assembled shear wall with window opening was analyzed. The resultshows that by appropriately increasing the vertical reinforcement in the cast-in-situ boundary elements of the SGBLmonolithic assembled shear wall with window opening, the bearing capacity of the SGBL monolithic assembled shearwall with window opening can be close to that of cast-in-situ shear wall. In addition, the axial compression ratio haslittle effect on the mechanical behaviors of the two types of shear wall with window opening, and the eccentricity of theopening had little effect on the bearing capacity of SGBL monolithic assembly shear wall with window opening. For aneccentricity of opening less than 20%, the influence on the lateral stiffness of SGBL monolithic assembled shear wallwith window opening is less than 8%.

Keywords:SGBL monolithic assembled shear wall; shear wall with window opening; non-connected vertical distributionreinforcement; lateral resistance behavior; finite element analysis

∗国家自然科学基金项目(52078360).

第一作者:宋晓滨,博士,教授,主要从事混凝土和木结构抗震性能研究,Email: xiaobins@ tongji. edu. cn.

[引用本文] 宋晓滨,蔡琪,肖绪文,等. 带窗洞的竖向分布钢筋不连接装配整体式剪力墙的受力性能分析[ J].建筑结构,2023,53(5):30-35. SONG Xiaobin, CAI Qi, XIAO Xuwen,et al. Study on mechanical behavior of monolithicassembled concrete shear wall with non-connected vertical distribution reinforcement and window opening[ J]. BuildingStructure,2023,53(5):30-35.