支模架节点半刚性性能对比研究  

A Comparative Study on Semi-Rigidity Joints of Steel Tubular Formwork-Supports

作　　者：杜宏伟[1] 程赫明[1] 李建云[1] 戴纪峰 刘延芳[1] 

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《昆明理工大学学报（自然科学版）》2017年第3期108-112,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：云南省人培基金项目(KKSY201504049)

摘　　要：为了对比各种形式模板支撑架梁柱节点半刚性强弱,本文抽取直角扣件、碗扣式、盘扣式、轮扣式直角节点等工程中常用的模板支撑架形式的梁柱连接进行节点扭转刚度试验,得到并绘制相应的M-θ关系曲线,为各种形式支撑架设计计算提供参考.再搭设这4种不同节点形式钢管支撑架进行单榀试验,根据试验所得位移与SAP 2 000模拟所得的位移计算得到半刚性横向刚度修正系数,进行直观对比.结果表明节点刚度由强到弱依次为:65N·m初始拧紧力矩扣件式节点、碗扣式节点、盘扣式节点、40N·m初始拧紧力矩扣件式节点、轮扣式节点.In order to compare the semi - rigid strength of various beam - coluEnn joints, torsional stiffness tests of beam -column connections, in the form of the template support frame, which are commonly used in projects, are carried out in this study, with 4 kinds of joints being tested, namely： right -angle coupler, cuplok joint, disk - pin joint node, and wheel buckle joint. According to their torsion stiffness tests, corresponding curves are drawn, thus providing a reference for design and calculations of various forms of support frame. Afterwards, tubular steel formwork - support of these four different types of joints are set up to carry out single frame tests. Lateral semi - rigid stiffness correction factors calculated from displacements acquired from the experiments and those acquired from SAP 2 000 simulation are compared and analyzed. The results show that the stiffness from strong to weak is in the following order：right -angle coupler joint with 65 N . m initial tightening torque, cuplok joint, disk -pin joint node, right -angle coupler joint with 40 N · m initial tightening torque, and wheel buckle joint.

关 键 词：直角扣件 碗扣式节点 盘扣式节点 轮扣式节点 半刚性连接 半刚性修正系数 

分 类 号：TU392.2[建筑科学—结构工程]