【摘要】 基于4根梁的低周反复荷载试验,较为系统地研究了预应力钢骨混凝土梁的破坏形态、恢复力模型、变形恢复能力、延性、耗能能力等抗震性能.研究表明:预应力钢骨混凝土梁的滞回曲线呈明显的梭形,表现出了较大的位移延性、良好的耗能能力和变形恢复能力,总体抗震性能优良.另外,还基于试验结果建立了预应力钢骨混凝土梁的M-f恢复力模型,为今后预应力钢骨混凝土梁的抗震理论研究提供了基础参数.更多还原

【Abstract】 Tests are conducted on four beams under low reversed cyclic loading to investigate seismic performance of prestressed steel reinforced concrete(SRC) beams,such as failure patterns,hysteretic model,displacement restoring capacity,ductility,energy dissipation capacity,etc.Studies indicate that all beams behave better seismic performance during the testing,presenting fuller hysteresis loops and relatively high displacement ductility,energy dissipation capacity and displacement restoring capacity.In addition,an M- hysteretic model for prestressed SRC beams,on the basis of experimental results,is proposed,which would provide fundamental parameters for further investigations on seismic analysis of prestressed SRC beams.更多还原