摘要
对一种新型预制装配框架梁柱节点的抗震性能进行数值模拟计算,预制装配框架节点由预制带有U型键槽的梁和预制柱组成,节点核心区和梁的U型键槽内通过现浇混凝土进行拼装。为了实现预制梁的塑性铰外移,在梁柱节点处设置了4根附加钢筋,从而可以有效的提高节点区的强度。通过有限元软件ABAQUS对预制装配节点进行数值模拟计算,得出该节点的滞回曲线和骨架曲线,计算出预制装配框架节点的延性系数,然后再通过数值计算现浇节点的滞回曲线和骨架曲线,与预制构件进行对比分析,得出预制节点耗能能力与现浇节点的耗能能力基本相当,所提出的新型节点能够用于地震区混凝土框架结构体系之中。
To simulate seismic performance of a new type precast frame structure beam-to-column connection,the precast frame structure connection is made by the column and U-shaped beam shells,and cast-in-place is used for the beam-to-column joint and the beam core in order to make the plastic hinge relocation. The precast connection is simulated by the element software ABAQUS,and the hysteretic loops of load displacement and skeleton of load displacement are derived. By calculating the ductility factor,and simulating the cast-in-place connection,the hysteretic loops of load displacement and skeleton of load displacement are obtained and compared with the precast connection. The results indicate that the energy consumption and of precast connection is similar to the cast-in-place connection. It can conclude that the proposed precast connection can be applied to the high-strength concrete structures in seismic zones.
出处
《工程抗震与加固改造》
北大核心
2014年第5期23-27,共5页
Earthquake Resistant Engineering and Retrofitting
关键词
预制装配
框架
抗震
延性
耗能
precast
frame structure
seismic performance
ductility factor
energy consumption
