无剪刀撑框架式支撑结构稳定性计算方法研究  

Calculation Method Research of Frame Support Structure Stability Without X-bracing

作　　者：罗尧治[1] 谢俊乔[1] 郑延丰[1] 

机构地区：[1]浙江大学空间结构研究中心,浙江杭州310058

出　　处：《施工技术》2016年第2期115-120,共6页Construction Technology

基　　金：国家杰出青年科学基金项目(51025828)

摘　　要：通过大量考虑初始缺陷的非线性有限元分析,定量研究了一系列构造参数对无剪刀撑框架式支撑结构稳定承载力的影响。结合《建筑施工临时支撑结构技术规范》JGJ300—2013的编制工作,提出了无剪刀撑框架式支撑结构稳定承载力的实用计算方法,给出了由无量纲参数K,α,nz计算无剪刀撑框架式支撑结构计算长度系数的表格。进一步研究了侧向约束对无剪刀撑框架式支撑结构稳定承载力的影响,提出了侧向约束影响系数,给出了一定搭设条件下的系数取值。Through non-linear finite element analysis, the effects of erection parameters on stability capacity of frame support structures without X-bracing are studied. Combining with the work on Technical code for temporary support structures in construction JGJ300--2013, calculation methods of stability capacity of frame support structure without X-bracing are proposed. The effective length factors are calculated by three dimensionless parameters K,α,z, and the computation tables for effective length factors are obtained. Meanwhile, the effect of lateral restraint is also analyzed. Correction coefficient considering lateral restraint is put forward, and the reliable values of this correction coefficient are given under some certain conditions.

关 键 词：支撑结构 无剪刀撑框架 承载力 稳定性 研究 

分 类 号：TU731.1[建筑科学—建筑技术科学]