不等宽T型方钢管节点的刚度计算  

Stiffness of stepped T-type RHS joints subjected to axial loading

作　　者：武振宇[1] 谭慧光[2] 张耀春[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [2]哈尔滨工业大学基建处,黑龙江哈尔滨150001

出　　处：《哈尔滨建筑大学学报》2002年第5期13-16,27,共5页Journal of Harbin University of Civil Engineering and Architecture

基　　金：国家自然科学基金资助项目(50108006);黑龙江省博士后科研启动金资助项目

摘　　要：在计算节点强度的塑性铰线模型的基础上,建立了不等宽T型方管节点在支杆轴压荷载作用下的刚度模型,推出了刚度简化计算公式.采用修正系数μ1、μ2、μ3、μ4修正简化计算公式的计算结果,则可较为准确地模拟节点的切线刚度、变形达1%b0、3%b0及荷载达Ps时的刚度.通过与有限元计算结果比较证明提出的方法是可行的.From a yield line model used for calculating RHS-joint strength, a stiffness model was developed for a stepped T-type RHS joint, and stiffness formulas were established. The tangent stiffness and secant stiffness were simulated when the deformation value was 1% b0 or 3% b0 and when the load reached Ps the stiffness could be anticipated by the formulas modified by μ1, μ2, μ3 and μ4. It was confirmed that the proposed method is reliable by comparing with the results of finite element analysis.

关 键 词：方管节点 刚度模型 有限元 塑性铰线模型 轴向荷载 方管结构 

分 类 号：TU392.3[建筑科学—结构工程]