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通过对一榀两层两跨预压装配式混凝土框架在低周反复荷载作用下的试验,研究了预压装配式混凝土框架的承载能力、破坏形态、滞回性能、变形恢复能力、位移延性及耗能能力等抗震性能。试验研究表明:加载过程中,框架梁端首先出现塑性铰,预压装配式框架属“强柱弱梁”型结构。框架荷载-位移滞回曲线较为丰满,具有良好的耗能能力和较强的变形恢复能力,实测的框架各层位移延性系数在3.67～4.44之间,预压装配式混凝土框架具有良好的延性性能。
Through the test of one two-story two-span prestressed concrete frame under low cyclic loading, the research on the bearing capacity, failure mode, hysteretic behavior, deformation recovery, displacement ductility, Energy-saving capabilities such as seismic performance. The experimental results show that during the loading process, the plastic hinges first appear at the beam ends of the frame and the pre-press fitted frames belong to the “strong column weak beam” type structure. The load-displacement hysteresis curve of the frame is relatively full, with good energy dissipation capacity and strong ability of deformation recovery. The measured displacement ductility coefficient of each layer of the frame is between 3.67 and 4.44, and the pre-compression assembled concrete frame has good ductility .