钢-竹组合框架结构抗震性能有限元分析  

FINITE ELEMENT ANALYSIS OF SEISMIC PERFORMANCE OF STEEL-BAMBOO COMPOSITE FRAME STRUCTURES

作　　者：黄帅[1] 李玉顺[1] 杜永飞[1] 许科科 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《工业建筑》2016年第1期41-46,共6页Industrial Construction

基　　金：国家自然科学基金项目(51378265)

摘　　要：钢-竹组合框架由组合柱和组合梁通过节点连接而成,通过6个钢-竹组合节点的拟静力试验,揭示了钢-竹组合节点的刚度变化规律。在此基础上,根据M-θ关系试验曲线拟合节点的M-θ多项式,用非线性弹簧单元模拟节点并建立6榀钢-竹组合框架的有限元模型,并对其进行反复荷载作用下的抗震性能分析,以探讨节点对组合框架的抗震性能影响,得到6榀框架的骨架曲线、刚度退化曲线和滞回曲线。研究结果表明:构件节点的因素对钢-竹组合框架的抗震性能有重要影响,节点处螺栓强度的提高及加劲肋的设置对框架结构抗震性能的提高有显著效果,钢-竹组合框架结构具有良好的抗震性能。Through the connection of composite column and composite beam by joints,a steel-bamboo composite frame was made. The article reflects the stiffness variation law of steel-bamboo joints by the pseudo static test of 6steel-bamboo composite joints. On this basis,according to the M- θ curve,the M- θ polynomial of joints was fit nonlinear spring element was used to simulate the joints and establish the finite element model of six steel-bamboo frames. Analysis was made on the seismic performance of the frames under repeated loads,in order to investigate the effect of joints on the seismic performance of composite frames. The skeleton curve,stiffness degradation curve and hysteretic curve of six frames were got. The results showed that factors to construct the joints had an important influence on seismic performance of steel-bamboo composite frames,improving the bolt strength of the nodes and setting the stiffeners have a significant effect on improving the seismic performance of the frames; steel-bamboo frame structures had a good seismic performance.

关 键 词：钢-竹组合节点 钢-竹组合框架模型 T型钢连接 拟静力试验 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11