预压装配式预应力混凝土框架抗震性能试验研究  

Experimental study of seismic performance of prestressed fabricated PC frames

作　　者：柳炳康[1] 黄慎江[1] 宋满荣[1] 王洪林[1] 陈丽华[1] 

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《土木工程学报》2011年第11期1-8,共8页China Civil Engineering Journal

基　　金：国家自然科学基金(50778060)

摘　　要：本文通过对一榀两层两跨预压装配式混凝土框架拟动力和拟静力试验,研究预压装配式混凝土框架的地震反应、刚度退化、滞回性能、耗能能力、位移延性等抗震性能。拟动力试验表明:随着加速度峰值的增大,加载至层间位移角为1/107,试件刚度出现退化,结构呈现塑性性质;拟静力试验表明:低周反复荷载作用下,框架梁端首先出现塑性铰,符合"强柱弱梁"的要求。框架荷载-位移滞回曲线较为丰满,框架破坏时极限位移角可达1/29,实测位移延性系数在4.0左右,预压装配式混凝土框架具有良好的延性性能和较强的变形恢复能力。Based on a pseudo-dynamic test and a low-reversed cyclic loading experiment, the seismic performance of a specimen of two-story two-bay prestressed fabricated concrete frame, including rigidity degradation, hysteretic behavior, energy dissipation and displacement ductility, is studied. The pseudo-dynamic test indicated that the frame stiffness decreased at story drift angle of 1/107 and the specimen went into plastic behavior as the peak acceleration increases. The low-cyclic reversed loading experiment indicated that the plastic hinge first appeared at the end of the beams in the loading process, the prestressed fabricated concrete frame behaved like a ＂strong column weak beam＂ structure. The load-displacement hysteresis curve was quite plump, the ultimate story drift angle was up to 1/29 when the frame was destroyed, and the displacement ductility coefficient of was about 4.0.

关 键 词：预压装配式框架 拟动力试验 低周反复加载 刚度退化 位移延性 抗震性能 

分 类 号：TU378.4[建筑科学—结构工程] TU317.1