海洋平台圆钢管柱-钢梁外加强环节点非线性有限元分析

Nonlinear FEM Analysis of Steel Beam to Steel Tubular Column Connections with External Stiffening Rings

在海洋平台上部结构、高层建筑、大型塔架等结构中,圆钢管柱与钢梁外加强环节点的刚性连接为主要的梁柱连接形式之一。本文采用ABAQUS有限元分析软件对圆钢管柱与钢梁外加强环节点进行非线性有限元分析。计算和分析了圆管柱与钢梁外加强环节点受力的荷载—位移曲线,给出了在不同条件下,荷载—位移曲线的变化规律。分析了在不同轴压比条件下,加强环板不同宽度和厚度时,节点的应力分布,以及在不同条件下节点刚度、承载力的变化趋势。

Steel Beam to Steel Tubular Column Connections with External Stiffening Rings is used widely in upper structures of jacket platform.In this paper,Nonlinear finite element analysis on Steel Beam to Steel Tubular Column Connections with External Stiffening Rings were carried out through the package ABAQUS.Load-displacement curves of this joint were calculated and analyzed.The stress distribution of this joint with different ring width and thickness were obtained under different axial compression ration.And The trends of stiffness,bearing capacity of this joint under different condition is given.