高强钢筋高强混凝土框架结构拟动力试验研究

采用MTS公司生产的液压伺服加载系统对1/2比例单跨二榀二层框架模型进行拟动力试验,研究配有高强钢筋高强混凝土框架结构抗震性能.试验采用经过调幅的具有不同地震加速度峰值的3种地震波作为激励进行加载,共采用11种工况.重点研究了这种结构在地震过程中动力特性的变化、裂缝出现情况、滞回性能、弹性和弹塑性阶段的地震反应及抗震性能.试验结果表明:此类高强混凝土框架结构具有较好的抗震性能.该试验研究成果为在地震区采用高强混凝土框架结构提供了一条有效的途径.

Pseudo-dynamic experimental research on high-strength concrete frame structure reinforced with high-strength rebars

An experimental research on high-strength concrete(HSC) frame structure reinforced with high-strength rebars is presented.The pseudo-dynamic tests were performed for 1/2 scale frame model with two floors and two bays using MTS loading system.The test is to develop the seismic behavior of the frame with high-strength concrete and pre-stressed rebars.The specimen was subjected to 11 loading cases by using three kinds of acceleration records of ground motion with the adjusted amplitude,focusing on study of change of dynamic character during earthquakes,cracking patterns,hysteretic behaviors and seismic responses in elastic and elastic-plastic stages.The experimental results show that this kind of HSC frame structure can meet the requirements of the seismic performance.The results of the test may open a new road for the application of HSC frame structure in seismic zone.