半刚接钢框架内填不同构造措施钢筋混凝土墙子结构抗震性能试验研究

发布时间：2018-03-22 18:17

本文选题：半刚接钢框架　切入点：内填墙　出处：《建筑结构学报》2014年10期 　论文类型：期刊论文

【摘要】：为研究半刚接钢框架内填RC墙结构的抗震性能,提出了一种考虑内填墙边界条件的子结构模型,进行了3榀1/3缩尺的3层单跨半刚接钢框架内填RC墙子结构的低周往复加载试验,研究了不同构造内填RC墙对结构抗震性能的影响,得到了试件的滞回曲线、骨架曲线、位移延性系数、刚度退化、耗能能力及水平剪力分配。试验结果表明:内填贯通竖缝RC墙及暗竖缝RC墙试件的滞回曲线饱满,耗能能力强,但水平承载力及抗侧刚度略低,破坏模式均为缝间墙的弯曲破坏;内填实体RC墙试件的滞回曲线捏缩明显,耗能能力较弱,但水平承载力及抗侧刚度较高,破坏模式为内填墙的剪切破坏;内填墙降低了地震作用下周边框架节点转动能力,半刚性节点的最终塑性转角不超过0.025 rad,可避免钢框架节点失效导致的脆性破坏。内填墙承担约80%的水平荷载,但随着水平荷载的增大逐渐降低。
[Abstract]:In order to study the seismic behavior of RC wall structure with semi-rigid steel frame, a substructure model considering the boundary condition of inner filling wall is proposed. In this paper, the low cycle reciprocating loading tests of three concrete RC wall substructures with 3 stories single span and half rigid connection steel frame with 1 / 3 scale are carried out. The effects of different structures on seismic behavior of RC walls are studied. The hysteretic curves and skeleton curves of the specimens are obtained. Displacement ductility coefficient, stiffness degradation, energy dissipation capacity and horizontal shear force distribution. The experimental results show that the hysteretic curves of RC walls with vertical joints and those of RC walls with dark vertical joints are full and strong, but the horizontal bearing capacity and lateral stiffness are slightly lower. The failure mode is bending failure of the jointed wall, the hysteretic curve of RC wall with internal filling is obvious, the energy dissipation ability is weak, but the horizontal bearing capacity and lateral stiffness are higher, and the failure mode is shear failure of the inner filling wall. The inner filling wall reduces the rotation ability of the peripheral frame joints under earthquake, and the final plastic rotation angle of the semi-rigid joints is less than 0.025 rad. which can avoid the brittle failure caused by the failure of the steel frame joints. The inner filling wall bears about 80% horizontal load. However, with the increase of horizontal load, it decreases gradually.
【作者单位】：河海大学土木与交通学院;苏州科技学院江苏省结构工程重点实验室;中国建筑东北设计研究院有限公司;
【基金】：国家自然科学基金项目(51108292) 中国博士后科学基金项目(2013M531267) 江苏省结构工程重点实验室基金项目(ZD1003) 江苏省“青蓝工程”优秀青年骨干教师资助项目
【分类号】：TU398.9;TU317.1

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