摘要
扣件式钢管脚手架是目前国内建筑施工中使用最广的脚手架形式。在目前的几种计算模型中,半刚性节点模型最能反映扣件连接的特点,然由于建筑施工的特点,由单个扣件实验测得的节点本构关系在实用中是不可信的。本文通过对脚手架整架承载力试验结果的反分析,求得了节点旋转刚度系数,并建立了考虑节点半刚性连接的脚手架计算模型。比较了本模型与规范(JGJ130—2001)计算结果的差异,发现按照规范计算,其结果是偏于安全的。
Steel tubular scaffold with couplers is the most widely used scaffold in China s construction industry.Among currently calculation models,the semi-rigid node model is considered most adjacent to actual scaffold.But owing to the trait of actual construction,the rotational stiffness gotten from standard lab test may be unbelievable.So in this paper,the authors get it from back-analysis of a series scaffold testing results and find the node rotational stiffness K=25kN·m/rad.Based on this result,a calculation m...
出处
《山东建筑大学学报》
2009年第1期38-42,共5页
Journal of Shandong Jianzhu University
关键词
扣件式钢管脚手架
半刚性节点
反分析
有限元
steel tubular scaffold with couplers
semi-rigid node
back-analysis
FEM
