建筑施工临时支撑结构分类及稳定性分析  

Classification and stability analysis on temporary support structures in construction

作　　者：罗尧治[1] 郑延丰[1] 谢俊乔[1] 陈红 施炳华[3] 肖绪文[4] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058 [2]中国建筑一局(集团)有限公司,北京100161 [3]中国建筑科学研究院建筑结构研究所,北京100013 [4]中国建筑工程总公司,北京100037

出　　处：《建筑结构学报》2016年第4期143-150,共8页Journal of Building Structures

基　　金：国家杰出青年科学基金项目(51025828);国家科技支撑计划(2012BAJ07B03)

摘　　要：根据搭设方式和受力特点将建筑施工临时支撑结构分为框架式支撑结构、桁架式支撑结构、混合式支撑结构及特殊支撑结构,框架式支撑结构又可分为无剪刀撑框架式支撑结构和有剪刀撑框架式支撑结构。确定了各类支撑结构的计算单元,提出了基于整体三维结构分析、考虑节点半刚性和水平杆连续性的简化计算模型,推导了相应的稳定方程。得到了框架式支撑结构的计算长度系数计算式,以及考虑扫地杆高度、顶托高度和支撑结构高度等影响因素的修正系数,给出了桁架式支撑结构整体失稳和局部失稳的计算方法。建立了扣件式、碗扣式或承插式等不同构配件搭设的临时支撑结构稳定性分析的统一理论,为JGJ 300—2013《建筑施工临时支撑结构技术规范》的编制提供参考。In this paper the temporary support structures in construction are classified into frame support structures,truss support structures,hybrid support structures and special support structures based on their assembly patterns and mechanical behaviors. Frame support structures are classified into structures with and without X-bracing. The units for each type of structure are determined. The simplified calculation models which consider the rotational stiffness of joints and the continuity of horizontal tubes are put forward according to analysis of overall three-dimensional structures.Corresponding stability equations are derived. The calculation formulas for effective length factors of frame support structures are obtained. Some correction coefficients which consider the influence of the height of bottom transom,the length of U-head,the height of structures,etc. are proposed. The method for overall and local stability calculation of truss support structures is given. A unified theory for stability analysis of temporary support structures assembled with tubes and couplers,buckle bowls,disk locks or other fittings is established. The research contributes to the work on‘Technical code for temporary support structures in construction＇（ JGJ 300—2013）.

关 键 词：临时支撑结构 半刚性节点 稳定性分析 计算长度系数 

分 类 号：TU714[建筑科学—建筑技术科学]