铝合金板式节点平面内抗弯刚度研究  

Study on in-plane bending stiffness of aluminum alloy gusset joint

作　　者：郭小农[1] 朱劭骏 王丽 欧阳元文 Guo Xiaonong;Zhu Shaojun;Wang Li;Ouyang Yuanwen(Department of Structural Engineering,Tongji University,Shanghai 200092,China;Shanghai Tongzheng Aluminium Structure Engineering ＆ Technology Co.,Ltd.,Shanghai 201103,China)

机构地区：[1]同济大学建筑工程系,上海200092 [2]上海通正铝合金结构工程技术有限公司,上海201103

出　　处：《建筑结构》2018年第14期34-39,共6页Building Structure

基　　金：国家自然科学基金(50908168,51478335)

摘　　要：铝合金板式节点是典型的半刚性节点,其在网壳平面内的抗弯刚度对网壳杆件的稳定承载力影响很大。首先基于组件法的思想推导出了节点在各受力阶段的平面内弯曲刚度以及所对应的临界弯矩值,然后建立数值模型,对铝合金板式节点的网壳平面内抗弯刚度进行模拟,最后在数值分析结果的基础上,拟合得到了节点的弯曲刚度公式,并提出了平面内抗弯刚度的四折线模型。弯曲刚度公式与数值分析结果吻合良好,表明公式具有较高精度。The aluminum alloy gusset（ AAG） joint is a typical semi-rigid joint,whose in-plane bending stiffness largely influences the stability of the members of a shell. Firstly,the in-plane bending stiffness and the corresponding bending moment of each loading stage were derived based on the component method. Then numerical models were established to simulate the in-plane bending stiffness of the AAG joint. Finally,the fitting formulae were obtained based on the numerical results,and the four polyline model of in-plane bending stiffness was proposed. The results of the formulae fit well with the numerical results,which indicate that the four polyline model has high accuracy.

关 键 词：铝合金板式节点 弯曲刚度 四折线模型 

分 类 号：TU395[建筑科学—结构工程]