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  

Finite element analysis of precast SRCT shear wall under horizontal load

作　　者：庞瑞[1] 刘宇豪 杜峰 赵晗玉 PANG Rui;LIU Yuhao;DU Feng;ZHAO Hanyu(College of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China;Henan Dongfang Construction&Development Group Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[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

出　　处：《建筑结构》2023年第11期61-67,共7页Building Structure

基　　金：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)。

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。Nonlinear numerical analysis model of steel-concrete composite tube(SRCT)shear wall was established by selecting the appropriate element type and material constitutive relations based on the low-cycle reciprocating loading tests of three precast SRCT shear wall specimens with shear span ratio of 1.65 and axial compression ratio of 0.2.The influences of the axial compression ratio,concrete strength,steel strength and the arrangement of the tie-bars on the mechanical properties of the SRCT shear wall under horizontal load were investigated.The results show that the calculated values of the numerical analysis are in good agreement with the test values,the numerical method can be used for SRCT shear wall analysis under horizontal load.With the increase of axial compression ratio,concrete strength and steel strength,the peak bearing capacity and initial stiffness of SRCT shear wall increase,but the displacement ductility decreases.The initial stiffness and bearing capacity of SRCT shear wall with plum-style tie-bar arrangement are not much different from that of SRCT shear wall with parallel arrangement,but displacement ductility of SRCT shear wall is better than that of SRCT shear wall with parallel arrangement.The ranges of main parameters affecting the mechanical performance of SRCT shear wall were proposed on basis of the test and numerical analysis.

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 

分 类 号：TU398.2[建筑科学—结构工程]