柔性钢框架外挂再生混凝土墙结构抗震性能试验研究

发布时间：2018-03-16 22:22

本文选题：柔性钢框架　切入点：再生混凝土　出处：《建筑结构学报》2017年02期 　论文类型：期刊论文

【摘要】：为研究柔性钢框架外挂再生混凝土墙结构的抗震性能,对2个单层单跨1∶3缩尺的柔性钢框架外挂再生混凝土墙试件及1个纯钢框架试件进行了拟静力试验。通过对有无外挂墙板及不同梁柱节点形式的对比,分析了外挂墙板及梁柱节点刚度对结构的承载力、抗侧刚度、延性及耗能能力的影响,并对结构内力及水平荷载分配进行了分析。结果表明:柔性钢框架设置外挂墙板后,结构承载力提高约19%;梁柱连接节点刚度对结构的抗震性能影响不大,两种连接形式下结构承载力仅相差6%;柔性钢框架外挂再生混凝土墙结构具有良好的延性,平均位移延性系数均大于3,建议与"中震可修"相对应的层间位移角限值取1/80~1/100;结构耗能主要由钢框架提供,设置外挂墙板后,对耗能能力的提高幅度约15%~20%;栓焊混合连接结构中钢框架内力分布均匀,梁柱节点整体性能好;平齐端板连接节点在强震下变形能力强,受压区翼缘局部翘曲;结构水平荷载主要由钢框架承担,外挂墙板承担约20%~30%。
[Abstract]:In order to study the seismic behavior of recycled concrete wall structure with flexible steel frame, The pseudostatic tests were carried out on two specimens of external regenerated concrete wall of flexible steel frame with single span of 1: 3 scale and one specimen of pure steel frame. A comparison was made between the wall panels with or without external hangers and the different forms of Liang Zhu joints. The effects of external wall board and Liang Zhu joint stiffness on the bearing capacity, lateral stiffness, ductility and energy dissipation capacity of the structure are analyzed, and the internal force and horizontal load distribution of the structure are analyzed. The results show that the flexible steel frame is equipped with external wall panel. The bearing capacity of the structure is increased by about 19%; the stiffness of Liang Zhu connection joint has little effect on the seismic performance of the structure, and the difference of the bearing capacity between the two kinds of connection forms is only 6%. The flexible steel frame with recycled concrete wall structure has good ductility. The average displacement ductility coefficient is more than 3. It is suggested that the limit value of interstory displacement angle corresponding to "moderate earthquake repairable" should be 1 / 80 / 1 / 100. The energy consumption of the structure is mainly provided by steel frame. The increase of energy dissipation capacity is about 15% and 20%; the internal force distribution of steel frame is uniform and Liang Zhu joint has good overall performance in bolt-welding hybrid connection structure; the horizontal end plate joint has strong deformation ability under strong earthquake and local warping of flange in compression zone; The horizontal load of the structure is mainly carried by the steel frame, and the external wall board bears about 20 / 30.
【作者单位】：西安理工大学土木建筑工程学院;西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51308454) 中国博士后科学基金项目(2013M542371) 陕西省博士后自然科学基金陕西省住建厅建设科技专项(2014-K12)
【分类号】：TU398.9;TU352.11

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