环口板加固T型方钢管节点在轴压作用下极限承载力的参数分析  

Parametric Study on the Static Strength of Square Tubular T-joints Reinforced with Collar Plate under Axial Compression

作　　者：王文杰[1] 邵永波[1] 

机构地区：[1]烟台大学土木工程学院,山东烟台264005

出　　处：《土木工程与管理学报》2011年第2期32-38,共7页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(50808153)

摘　　要：为了研究环口板加固对T型方钢管节点在支管承受轴向压力作用下的极限承载力的影响,本文运用前期工作中所采用的有限元模型建立方法,对320个环口板加固T型方钢管节点进行了参数分析。参数包括支管和主管的宽度比β,主管的宽度与厚度比2γ,环口板与主管厚度比τc和环口板与支管宽度比lc/d1。参数分析结果表明:通过对环口板的宽度和厚度进行适当的组合,可以显著提高节点的承载力。然后将有限元模拟得到的极限承载力结果与前期工作中推导出的极限承载力公式的计算结果进行对比,给出了极限承载力计算公式的适用范围。To study the effects of collar plate reinforcement on the static strength of square tubular T-joints subjected to brace axial compression,a parametric study on overall 320 squares tubular T-joints is conducted by using the finite element method adopted in the primary research work.The principal parameters include： brace to chord width ratio β,the chord width to wall thickness ratio 2γ,collar plate to chord wall thickness ratio τc,and collar plate width to brace width ratio lc/d1.The results reveal that a significant improvement on the static strength can be achieved by selecting an appropriate combination of the width and thickness of the collar plate.With comparison of the finite element results and equation results,the applicable range of the equation for predicting the static strength of a collar plate reinforced square tubular T-joint is specified.

关 键 词：T型方钢管节点 环口板 参数分析 轴压作用 极限承载力 塑性铰线 

分 类 号：TU391[建筑科学—结构工程]