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
引用文献：
庞瑞 ，刘宇豪， 杜峰， 赵晗玉. 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，2023，48（11）：61-67.
PANG Rui LIU Yuhao DU Feng ZHAO Hanyu. Finite element analysis of precast SRCT shear wall under horizontal load[J]. Building Structure，2023,48（11）：61-67.
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；
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)。
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[3] 钱稼茹，魏勇，赵作周，等.高轴压比钢骨混凝土剪力墙抗震性能试验研究[J].建筑结构学报，2008,29(2):43-50.
[4] D DAN,A FABIAN,V STOIAN.Theoretical and experimental study on composite steel-concrete shear walls with vertical steel encased profiles[J].Journal of Constructional Steel Research,2011,67(5):800-813.
[5] ZHOU JING,LI PENG,GUO NAIFU.Seismic performance assessment of a precast concrete-encased CFST composite wall with twin steel tube connections[J].Engineering Structures,2020,207:110240.
[6] 王玉镯，黄颖，王慧敏，等.暗支撑型钢混凝土剪力墙抗震性能试验研究[J].西南交通大学学报，2018,53(3):500-507.
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[8] 吕西林，干淳洁，王威.内置钢板钢筋混凝土剪力墙抗震性能研究[J].建筑结构学报，2009,30(5):89-96.
[9] 陈涛，肖从真，田春雨，等.高轴压比钢-混凝土组合剪力墙压弯性能试验研究[J].土木工程学报，2011,44(6):1-7.
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[12] JI XIAODONG,JIANGFEI MING,QIAN JIARU.Seismic behavior of steel tube-double steel plate-concrete composite walls:experimental tests[J].Journal of Constructional Steel Research,2013,86:17-30.
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[14] ZHANG XIAOMENG,QIN YING,CHEN ZHIHUA.Experimental seismic behavior of innovative composite shear walls[J].Journal of Constructional Steel Research,2016,116:218-232.
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Finite element analysis of precast SRCT shear wall under horizontal load
Abstract: 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.
Keywords: steel-concrete composite tube shear wall; precast; finite element analysis; stiffness; bearing capacity; parameter analysis
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