钢管RPC边框密肋复合剪力墙轴压性能研究  

Research on axial compression performance of multi-ribbed composite shear walls with RPC filled steel tubular columns

作　　者：朱倩[1] 岳旭鹏 蒋永杰 赵均海[1] Zhu Qian;Yue Xupeng;Jiang Yongjie;Zhao Junhai(School of Civil Engineering,Chang'an University,Xi'an 710061,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061

出　　处：《建筑科学》2021年第9期24-32,共9页Building Science

基　　金：国家自然科学基金(51878056);陕西省科技计划-社会发展领域项目(2019SF-256);陕西省自然科学基金(2021JM-170,2021JM-165);长安大学中央高校基本科研业务费专项资金(300102289105,300102288112)。

摘　　要：为研究新型钢管RPC边框密肋复合剪力墙的轴压性能,基于统一强度理论,考虑中间主应力及拉压异性效应,推导出此类构件的轴压承载力计算公式并进行试验验证;采用有限元分析软件ABAQUS,建立钢管RPC边框密肋复合剪力墙的有限元模型,对轴压力学性能进行分析,探讨了中间主应力、钢管壁厚和高宽比对构件轴压承载力的影响。结果表明:钢管RPC边框密肋复合剪力墙具有较高的轴压承载力,ABAQUS数值模拟结果与理论分析结果吻合良好,同时验证了理论计算方法的准确性及有限元模型的可靠性。最后总结分析荷载位移曲线与应力曲线的变化规律,可知钢管RPC边框密肋复合剪力墙表现出良好的协同工作能力。In order to study the axial compression performance of the multi-ribbed composite shear walls with Reactive Powder Concrete(RPC)filled steel tubular columns,considering the intermediate principal stress and tensile and compressive anisotropic effects,the calculation formula of axial compression bearing capacity of such members is derived based on the unified strength theory and is given with the experimental validation.Using the finite element analysis program ABAQUS,the finite element model of multi-ribbed composite shear walls with RPC filled steel tubular columns is ostablished to analyze the axial compression performance and to discuss the influence of the intermediate principal stress,the thickness of steel pipe wall and the height-width ratio on the axial compressive bearing capacity of members.The results show that the multi-ribbed composite shear walls with RPC filled steel tubular columns has a high axial compression bearing capacity,the ABAQUS numerical simulation results are in agreement with the theoretical analysis results.Meanwhile,the accuracy of the theoretical calculation method and the reliability of the finite element model are verified.Finally,the variation law of load displacement curve and stress curve is summarized and analyzed,and it is found that the multi-ribbed composite shear walls with RPC filled steel tubular columns showed good cooperative working performance.

关 键 词：统一强度理论 钢管RPC边框柱 密肋复合墙体 轴压承载力 数值模拟 

分 类 号：TU398.2[建筑科学—结构工程]