【作者】 刘文君； 崔佳； 程睿； 冯勇；

【Author】 Liu Wen jun Cui Jia Chen Rui Feng Yong (College of Civil Engineering,Chongqing University,Chongqing 400045,China)

【机构】 重庆大学土木工程学院；

【摘要】 空间交错桁架结构是钢结构中最近出现的一种新型结构体系。构成空间交错桁架体系的单榀桁架在三维空间体系中彼此既不同在一个方向,也不同在一个水平面上。对于空间交错桁架中处于空间异面的杆件须采用特殊节点形式连接。本文通过对空间交错桁架中三种特殊形式节点在拉力和扭矩联合作用下的足尺实验,测量拉伸和扭转变形。实验结果表明:三种节点形式的荷载-变形曲线有显著差异;荷载-变形曲线显示变形随外荷载增加呈非线性增加,说明节点区域存在应力重分布。更多还原

【Abstract】 The space cross-truss is a new kind of steel structure.Each single truss which makes up space cross-truss is neither in the same direction nor in the same plane.In the space cross-truss,some special kinds of joints must be applied to poles which are not in a plane.By the total-scale experiment in this paper,three kinds of special joints applied to space cross-truss are tested at tension and torsion to measure the tensional and torsional deformation.The result from the paper shows that the load-deformation graph of each kind of joint is different from each other obviously.The load-deformation graphs show that the deformation grew unlinearly by the increasing of load,which means that the stress redistributed in the joint region.更多还原