预制混凝土双板内浇自密实混凝土剪力墙抗震性能

进行了5片预制混凝土双板内浇自密实混凝土剪力墙的抗震性能试验.分析不同轴压比、暗柱及保温层设置情况下, 预制双板内浇自密实混凝土剪力墙受力机理, 以及裂缝分布、破坏形态、耗能能力、刚度退化趋势.试验结果表明:预制双板内浇自密实混凝土剪力墙具有良好抗震性能, 墙体内部桁架钢筋充分保证了预制混凝土双板与现浇自密实混凝土层整体协同工作, 增大轴压比和设置暗柱均有利于改善墙体的抗震性能, 墙体内设保温层不影响预制双板内浇自密实混凝土剪力墙承载能力.

Seismic Behavior of Double-wall Precast Concrete Shear Wall Casting With SCC

The seismic behavior of double-wall precast concrete( DWPC) shear wall casting with selfconsolidating concrete was studied. Five DWPC with self-consolidating concrete( SCC) specimens under cyclic load were investigated. Some factors such as axial compression ratio,boundary elements,and insulation were considered. The stress mechanism,crack distribution,failure mode,energy dissipation and stiffness degradation of the DWPC specimens were analyzed. Experimental results show that DWPC shear wall casting with SCC has good seismic behavior. The precast concrete parts and the cast-in-situ concrete parts of the DWPC shear wall casting with SCC can work together in coordination very well under loading by means of truss steel. Increasing axial compression ratio and setting hidden columns will improve seismic behavior of the DWPC shear wall with SCC. The thermal insulation in the wall cannot reduce the bearing capacity of the DWPC shear wall casting with SCC.