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提出了一种钢管混凝土边框内藏钢板深梁剪力墙。为研究其抗震性能及损伤后的加固性能,进行了两阶段试验。第I阶段低周反复荷载试验进行到位移角为1/50,试件明显屈服损伤,然后在墙体两侧钢管间贴焊薄钢板进行加固,进行第II阶段低周反复荷载试验,直至试件严重破坏。分析了各试件的承载力、刚度及退化过程、延性、耗能和破坏特征。研究表明:钢管混凝土边框和型钢中柱,有效约束了混凝土条带裂缝的开展,提高了剪力墙的延性;加设内藏钢板深梁,可明显提高剪力墙承载力和后期刚度;混凝土条带与钢管混凝土柱、型钢混凝土柱的连接界面区域,隐含形成了竖向耗能条带,往复变形过程中充分发挥了耗能性能;这种剪力墙明显屈服损伤经加固后,仍具有足够的抗震承载力和良好的耗能能力,便于震后修复。
A kind of steel plate deep-shear wall with steel tube concrete frame is proposed. In order to study the seismic performance and the post-damage reinforcement performance, a two-stage test was conducted. Stage I low cycle repeated load test to the displacement angle of 1/50, the specimen obviously yield damage, and then welded in the wall between the steel sheet welded steel sheet reinforcement, the second phase low cycle repeated load test until the test Serious damage. The bearing capacity, stiffness and degradation process, ductility, energy dissipation and failure characteristics of each specimen were analyzed. The results show that the concrete-filled steel tube deep columns can effectively improve the bearing capacity and post-rigidity of the shear wall, and the concrete Bands and the concrete filled steel tubular columns, steel columns connected to the interface area, implicitly formed a vertical energy strip, reciprocating deformation process to give full play to the energy performance; this shear wall obvious yield damage after reinforcement, still Has sufficient seismic capacity and good energy consumption, easy to repair after the earthquake.