(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: 为解决装配整体式剪力墙竖向钢筋连接套筒灌浆存在的灌浆质量难保证、施工效率低等问题,提出了一种新型预制墙体竖向分布钢筋不连接装配整体式剪力墙结构(SGBL 装配整体式剪力墙结构)体系. 为确定 SGBL 装配整体式剪力墙最大设计轴压比限值和竖向分布钢筋断开后的设置需求,采用有限元数值模拟方法,考虑轴压比、竖向分布钢筋配筋率等参数,探究了各参数对 SGBL 装配整体式剪力墙抗震性能的影响. 研究表明:与试验结果对比,精细化有限元模型合理;试件延性随轴压比增大显著降低,结合试验研究结果可取 SGBL 装配整体式剪力墙最大设计轴压比限值为 0. 5;竖向分布钢筋断开后,配筋率变化对剪力墙抗震性能影响较小,SGBL 装配整体式剪力墙竖向分布钢筋可按照最小配筋率设置.

关键词: SGBL 装配整体式剪力墙; 竖向分布钢筋不连接; 有限元分析; 抗震性能

中图分类号:TU318+. 1 文献标志码:A 文章编号:1002-848X(2023)05-0012-07

DOI:10. 19701 / j. jzjg. 20221377

Finite element analysis on seismic performance of monolithic assembled concrete shear wall with non-connected vertical distribution reinforcement

CAO Zhiwei1, ZHU Tong2, FU Qiang1, ZHANG Shiqian3, LIAO Xiandong3

(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 eliminate the shortcomings such as quality difficult assurance and low construction efficiency in the groutingsleeve in monolithic assembled concrete shear wall with connected vertical distribution reinforcement, a new type ofmonolithic assembled concrete shear wall structure with non-connected vertical distribution reinforcement (SGBL monolithicassembly shear wall structure) was proposed. In order to determine the maximum design axial compression ratio of SGBLmonolithic assembly shear wall and the setting requirements of vertically distributed reinforcement after disconnection, afinite element simulation method was used to explore the effect of parameters such as axial compression ratio and verticaldistribution reinforcement ratio on seismic performance of SGBL monolithic assembly shear wall. The results show that therefined finite element model is reasonable when compared with the experimental results; the ductility of specimensdecreases significantly with the increase of axial compression ratio, and combined with the experimental results, themaximum design axial compression ratio of SGBL monolithic assembly shear wall should be 0. 5; the vertical distributionreinforcement ratio has limited influence on the seismic performance of SGBL monolithic assembly shear wall when verticaldistribution reinforcements are disconnected, and the vertical distribution reinforcement ratio can be configured according tothe minimum reinforcement ratio.

Keywords: SGBL monolithic assembly shear wall; non-connected vertical distribution reinforcement; finite elementanalysis; seismic performance

∗国家自 然 科 学 基 金 ( 52078360), 山 东 省 重 点 研 发 计 划 课 题: 绿 色 智 能 建 造 和 建 筑 工 业 化 关 键 技 术 与 成 套 设 备(2021CXGC011205).

第一作者:曹志伟,博士,工程师,主要从事装配式建筑构件设计、智能建造等方向研究,Email:czwcscec@ 163. com.

[引用本文] 曹志伟,朱彤,傅强,等. 竖向分布钢筋不连接装配整体式剪力墙抗震性能有限元分析[ J]. 建筑结构,2023,53 ( 5):12-18. CAO Zhiwei,ZHU Tong,FU Qiang,et al. Finite element analysis on seismic performance ofmonolithic assembled concrete shear wall with non-connected vertical distribution reinforcement[ J]. Building Structure,2023,53(5):12-18.