X形圆钢管相贯节点平面外受弯滞回模型研究  

A hysteretic model of unstiffened CHS X-joints under out-of-plane bending

作　　者：孟宪德[1,2] 陈以一[1,3] 王伟[1,3] 

机构地区：[1]同济大学,上海200092 [2]中建国际设计顾问有限公司,上海200233 [3]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《土木工程学报》2012年第8期8-14,共7页China Civil Engineering Journal

基　　金：科技部国家重点实验室基金(SLDRCE08-A-04);国家自然科学基金(51038008)

摘　　要：采用数值分析方法对X形圆钢管相贯节点的平面外受弯滞回模型进行研究。针对影响节点性能的主要几何参数,建立206个已校验的有限元模型进行参数分析,通过多元回归技术得出基于Menegotto-Pinto方程的节点平面外弯矩-转角曲线方程,以及平面外受弯滞回模型,经比较,与数值分析结果吻合较好。通过一个单层网格结构算例,验证了滞回模型的准确性和有效性。Hysteretic model of unstiffened tubular X-joints under out-of-plane bending is studied by numerical analysis. Finite element analyses are conducted for 206 X-joints of various parameters influencing the non-rigid behavior of tubular joints. Based on the parametric study, the M-Ф relationship of tubular X-joints is established for predicting nonlinear behavior of connections in the global analysis of tubular lattice grid. Based on the M-Ф relationship and the finite element analysis result, the hysteretic relationship is established. Finally a numerical example for a reticulated shell verifies the proposed hysteretic model.

关 键 词：圆钢管相贯节点 滞回模型 平面外受弯 数值分析 

分 类 号：TU392.3[建筑科学—结构工程]