不等宽K型间隙方管节点承载力计算的塑性铰线法  

YIELD LINE METHOD FOR CALCULATION OF THE LOAD-CARRYING CAPACITY OF STEPPED K-TYPE GAPPED RHS-JOINTS

作　　者：武振宇[1] 武胜[1] 张耀春[1] 

机构地区：[1]哈尔滨工业大学土木工程学院

出　　处：《土木工程学报》2004年第5期1-6,共6页China Civil Engineering Journal

基　　金：国家自然科学基金资助项目 (50 1 0 80 0 6);哈尔滨工业大学校基金资助 (HIT2 0 0 1 48)

摘　　要：建立了考虑弦杆轴向压力影响的不等宽K型间隙方管节点的塑性铰线模型 ,并推出了节点承载力计算公式。公式中包含了弦杆轴力影响 ,节点间隙g变化 ,节点两支杆间的张拉场对节点承载力的影响。得出的节点承载力公式与实验结果、非线性有限元计算结果及CIDECT公式计算结果对比吻合得较好 ,从而为K、N型不等宽间隙方管节点提供了一个新的较为准确的计算方法和公式。The yield line model of stepped K-type gapped RHS-joints subjected to the combined chord axial compression load and branch axial loads is established in the paper.The formula approaching the load-carrying capacity of the joints, which takes account of the axial loads acting on chord, the joint gap g and the tension field of the joint,can be developed from this model. A detailed discuss is made to compare the results of the proposed formula with other results.The comparison shows that the results obtained from the formula is in good agreement with those of the nonlinear finite element analysis and test data,so that the formula is feasible.

关 键 词：不等宽K型方管节点 塑性铰线模型 倾斜塑性铰线 非线性有限元 静力性能 

分 类 号：TU392.3[建筑科学—结构工程]