冷挤压套筒连接装配式剪力墙精细有限元分析  

Finite Element Model of Shear Wall Matched with Cold Extrusion Sleeve Connection

作　　者：黄炎生[1] 郭倩倩 HUANG Yansheng;GUO Qianqian(Department of Civil Engineering and Transportation,South China University of Technology,Guangzhou,China,510641)

机构地区：[1]华南理工大学土木与交通学院,广东广州510641

出　　处：《沈阳建筑大学学报（自然科学版）》2022年第6期995-1002,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(52108143)。

摘　　要：目的 优化冷挤压套筒连接装配式剪力墙的有限元分析模型,研究采用该连接方式下装配式剪力墙结构的抗震性能。方法 基于冷挤压套筒连接件的单轴拉伸试验,采用多因素回归分析的方法构建等效本构关系,结合Clough滞回规则构建冷挤压套筒连接件“三折线”滞回本构模型,在ABAQUS中完成该材料模型的二次开发后放入冷挤压套筒连接装配式剪力墙精细化有限元模型中,进行低周往复荷载下的受力性能分析。结果 有限元模拟试件的屈服荷载、峰值荷载、极限荷载的误差均在7%以内,模拟滞回环面积的误差在14%以内,模拟结果与试验较吻合;冷挤压套筒连接装配式剪力墙在剪跨比为1.35、轴压比在0.26~0.44时,延性系数均大于3。结论 采用笔者建议的有限元模型可以较好地反映冷挤压套筒连接装配式剪力墙的抗震性能,此类装配式剪力墙抗震性能良好。To optimize the finite element analysis model of the cold extrusion sleeve connection prefabricated shear wall, and to study the seismic performance of the prefabricated shear wall structure using the connection method.Based on the uniaxial tensile test of cold extrusion sleeve connector, the corresponding equivalent constitutive relationship was constructed by multi-factor regression analysis, and the "tri-fold" hysteresis constitutive model of cold extrusion sleeve connector was constructed by combining the Tight hysteresis rule, and the secondary development of the material model was completed in the general commercial finite element platform ABAQUS,and then put into the fine finite element model of the cold extrusion sleeve connection assembly shear wall, and the force performance simulation study under low cycle reciprocating load was carried out.The errors of the yield load, peak load and limit load of the finite element simulation specimen are within 7%,and the error of the simulated hysteresis loop is within 14%,and the simulation results are more consistent with the test;When the cold extrusion sleeve connection assembly shear wall is 1.35 and the axial pressure ratio is 0.26~0.44,the ductility coefficient is greater than 3.The finite element model proposed in this paper can better reflect the seismic performance of the cold extrusion sleeve connection prefabricated shear wall, and the seismic performance of such prefabricated shear wall is good.

关 键 词：冷挤压套筒连接件 三折线滞回本构模型 精细化有限元模型 ABAQUS二次开发 装配式剪力墙 

分 类 号：TU375[建筑科学—结构工程]