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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%。
In order to study the seismic performance of flexible steel frame reconnection recycled concrete wall structure, two pseudo-static tests of two single-span single-span 1: 3 scale flexible concrete frame recycled concrete wall specimens and a pure steel frame specimen . Through the comparison of the types of joints with or without external wall and different beam and column, the influence of the stiffness of the external wall panels and the beam-column joints on the bearing capacity, lateral stiffness, ductility and energy dissipation capacity of the structure is analyzed. Load distribution was analyzed. The results show that the bearing capacity of the flexible steel frame increases by about 19% after the external wall panels are installed. The stiffness of the beam-column connection has little effect on the seismic performance of the structure, and the bearing capacity of the two joints is only 6% The structure of plug-in recycled concrete wall has good ductility and the average displacement ductility coefficient is greater than 3. It is suggested that the limit of layer drift angle corresponding to “moderate earthquake can be repaired” is 1/80 ~ 1/100. The structure energy consumption is mainly It is provided by the steel frame. After the external wall panels are installed, the energy consumption can be increased by about 15% -20%. The internal force distribution of the steel frame in the hybrid welded joint structure is uniform and the overall performance of the beam-column joint is good. Strong deformation under strong earthquake, compression zone flange local warp; structural horizontal load is mainly borne by the steel frame, external wall panels assume about 20% to 30%.