型钢混凝土剪力墙边框柱-腹板组合分析模型研究  

Column-web combined model for steel-reinforced concrete shear wall

作　　者：周珉 黄宗明[1] 高永[1] 傅剑平[1] 杨溥[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]陆军勤务学院军事设施系,重庆401311

出　　处：《建筑结构学报》2017年第11期55-63,共9页Journal of Building Structures

基　　金：国家自然科学基金项目(51178486)

摘　　要：通过对型钢混凝土(SRC)剪力墙的非线性有限元分析方法的研究,对目前存在的主要问题及其产生的原因进行了分析。根据SRC剪力墙的受力特点,综合考虑几何模型、材料本构、网格划分、极限状态确定等关键问题,提出了边框柱-腹板组合分析模型,并基于通用有限元程序ABAQUS进行二次开发,将能够较好反映受剪钢筋混凝土腹板基本受力性能的转角软化桁架模型(RA-STM)嵌入其材料库,应用于SRC剪力墙非线性有限元分析。通过与10片剪跨比为0.56~2.7、轴压比为0.1~0.342的SRC剪力墙拟静力试验结果的对比分析,表明所提出的边框柱-腹板组合模型能够比较准确地计算SRC剪力墙的极限承载能力和极限位移等,比较准确地模拟墙体的荷载-位移全过程曲线,准确地反映墙体的破坏过程和破坏模式。The deficiencies and related reasons of existing finite element analysis（ FEA） model for steel-reinforced concrete（ SRC） shear wall was investigated. According to the stress characteristics of SRC shear wall,the geometrical model,material constitutive relation,mesh generation and the limit state criteria were researched. Based on the rotating angle softened truss model（ RA-STM） which can reflect mechanical behavior of shear reinforced concrete web,a material user subroutine was developed based on the ABAQUS,and a column-web combined model was developed to simulate the SRC shear wall. Ten SRC shear walls with shear-span ratios ranging from 0. 56 to 2. 7,and axial compression ratios ranging from 0. 1 to 0. 342 are compared to verify the column-web combined model. The simulation results for the peak load and ultimate displacement agree well with the test results. The whole load-displacement curve and the failure mode of the SRC shear wall can be accurately simulated.

关 键 词：型钢混凝土剪力墙 边框柱-腹板组合分析模型 有限元分析 受力性能 

分 类 号：TU398.2[建筑科学—结构工程] TU311.41