(1 河南工业大学土木工程学院, 郑州 450001; 2 河南东方建设集团发展有限公司, 郑州 450000)

摘要: 在 3 个剪跨比为 1. 65、轴压比为 0. 2 的装配式钢-混凝土组合管(SRCT)剪力墙试件的低周往复加载试验基础上,选用合适的单元类型和材料本构关系等,建立了 SRCT 剪力墙的非线性数值分析模型. 考察了轴压比、混凝土强度、钢材强度及拉结筋布置方式等对 SRCT 剪力墙水平荷载下受力性能的影响. 结果表明:数值分析方法计算值与试验值吻合良好,可以较好地用于 SRCT 剪力墙在水平荷载下的受力分析;随着轴压比、混凝土强度及钢材强度的提高,SRCT 剪力墙峰值承载力及初始刚度均有提高,但位移延性降低;梅花式拉结筋布置的 SRCT 剪力墙与并列式布置形式的 SRCT 剪力墙初始刚度和承载力相差不大,但位移延性大于并列式布置形式的 SRCT 剪力墙;在试验和数值分析的基础上给出影响 SRCT 剪力墙受力性能主要参数的取值范围.

关键词: 钢-混凝土组合管剪力墙; 装配式; 有限元分析; 刚度; 承载力; 参数分析

中图分类号: TU398. 2 文献标志码:A 文章编号:1002-848X(2023)11-0061-07

DOI:10. 19701 / j. jzjg. LS210004

Finite element analysis of precast SRCT shear wall under horizontal load

PANG Rui1, LIU Yuhao1, DU Feng2, ZHAO Hanyu1

(1 College of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China;2 Henan Dongfang Construction & Development Group Co. , Ltd. , Zhengzhou 450000, China)

Abstract: Nonlinear numerical analysis model of steel-concrete composite tube ( SRCT) shear wall was established byselecting the appropriate element type and material constitutive relations based on the low-cycle reciprocating loading tests ofthree precast SRCT shear wall specimens with shear span ratio of 1. 65 and axial compression ratio of 0. 2. The influences ofthe axial compression ratio, concrete strength, steel strength and the arrangement of the tie-bars on the mechanicalproperties of the SRCT shear wall under horizontal load were investigated. The results show that the calculated values of thenumerical analysis are in good agreement with the test values, the numerical method can be used for SRCT shear wallanalysis under horizontal load. With the increase of axial compression ratio, concrete strength and steel strength, the peakbearing capacity and initial stiffness of SRCT shear wall increase, but the displacement ductility decreases. The initialstiffness and bearing capacity of SRCT shear wall with plum-style tie-bar arrangement are not much different from that ofSRCT shear wall with parallel arrangement, but displacement ductility of SRCT shear wall is better than that of SRCT shearwall with parallel arrangement. The ranges of main parameters affecting the mechanical performance of SRCT shear wallwere proposed on basis of the test and numerical analysis.

Keywords: steel-concrete composite tube shear wall; precast; finite element analysis; stiffness; bearing capacity;parameter analysis

∗国家自然科学基金(52278172),中原青年拔尖人才支持项目(ZYQR201912170),河南工业大学自科创新基金支持计划(2022ZKCJ05),河南省粮油仓储建筑与安全重点实验室开放课题(2021KF-02).

第一作者:庞瑞,博士,教授,博士生导师,主要从事装配式混凝土结构研究,Email:seupangrui@ 163. com.

[引用本文] 庞瑞,刘宇豪,杜峰,等. 水平荷载下装配式钢-混凝土组合管剪力墙受力性能有限元分析[J]. 建筑结构,2023,53(11):61-67. PANG Rui,LIU Yuhao,DU Feng,et al. Finite element analysis of precast SRCT shear wallunder horizontal load[J]. Building Structure,2023,53(11):61-67.