摘要:对3片活性粉末混凝土RPC(reactive powder concrete)剪力墙进行了低周反复荷载试验,考察了往复荷载作用下RPC剪力墙的破坏形态、承载力、滞回特性、延性、耗能能力等。基于试验,采用有限元程序OpenSees,选用分层壳单元模型,建立RPC剪力墙非线性模型,数值模拟加载全过程和受力性能,模拟滞回曲线与试验滞回曲线吻合较好。采用试验和数值模拟相结合的方法,重点分析轴压比对RPC剪力墙延性性能的影响,以位移延性系数不小于3为目标,给出了轴压比限值的建议。
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