影响钢管混凝土外加强环节点环板受力性能因素分析  

Analysis of Influencing Factors for the Ring Plate Mechanical Properties of CFST with Out Stiffener Ring Connection

作　　者：李成玉[1] 郭耀杰[2] 

机构地区：[1]武汉科技大学城市建设学院,武汉430070 [2]武汉大学土木建筑工程学院,武汉430072

出　　处：《工程建设与设计》2012年第3期58-60,共3页Construction & Design for Engineering

基　　金：湖北省自然科学基金(2006ABA291)

摘　　要：钢管混凝土结构梁柱节点是一复杂受力体系,到底哪些因素会影响环板的受力,目前还没有定论。通过对轴压比、节点域构件几何尺寸、加载方式等因素的分析,得到以下结论:(1)环板宽度对环板应力影响最大,柱管直径和柱管壁厚对环板应力也有影响,但其程度不大;(2)在较低轴压比作用下,环板危险断面上的应力分布相差不大,而当轴压比较大时,环板危险断面上的应力略有提高。但总的来说,在弹塑性阶段,轴压比对环板应力分布影响不大;(3)在相同加载值条件下,危险断面上的应力值,双向加载时要比单项加载略小。The beam-column connection ofConcrete Filled Steel Tubular （CFST）isacomplicatedload-bearingsystem. There is no final conclusion on what factors have effect on ring plate force. The following conclusions are obtained by analysis of factors such as axial compression ratio, geometry size ofjoint region component and loading mode： （1） the width ofring plate has much greater effect on ring plate stress than the diameter ofcolunm tubular and the wall thickness ofcolurrm tubular; （2） under lower axial compression ratio, the stress distributions have very little differences on the dangerous section of ring plate, while the stress on dangerous section offing plate slightly increases under higher axial compression ratio. However, generally speaking, during the elastic-plastic period, the ratio has very minor influence on stress distribution of the ring plate; （3） under the condition of the same loading value, the stress value on dangerous section is slightly lower under two-way loading than that under one-way loading.

关 键 词：钢管混凝土 加强环节点 影响因素 

分 类 号：TU352[建筑科学—结构工程] TU311