风荷载作用下超高层建筑脚手架立杆稳定性研究  

Study on Stability of Scaffolding Poles for Super High-rise Buildings under Wind Loads

作　　者：贾世龙[1] 陈凯荟 刘莉[1] 陈忠良 JIA Shilong;CHEN Kaihui;LIU Li;CHEN Zhongliang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Structure Design Department,Tenio Architectural Design Co.Ltd.,Tianjin,China,300384;Engineering Department,Shenyang Vanke Enterprise Co.Ltd.,Shenyang,China,110166)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]天友建筑设计股份有限公司结构设计部,天津300384 [3]沈阳万科企业有限公司工程部,辽宁沈阳110166

出　　处：《沈阳建筑大学学报（自然科学版）》2021年第4期676-684,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51978422);辽宁省重大科技专项基金项目(2019JH2/10300054);辽宁省自然科学基金项目(201602617);辽宁省教育厅科研项目(LNJC201905)。

摘　　要：目的研究风荷载对超高层建筑脚手架稳定性的影响,完善结构设计理论。方法通过数理分析,优化风荷载计算公式,并以实际工程算例进行校核;计算、分析风荷载对不同支设基准面(距地面高度大于100 m)、不同搭设方式超高层建筑脚手架立杆附加轴力的影响幅度及变化规律。结果笔者提出简化的风荷载计算方法与现行规范相比,超高层风荷载附加轴力对脚手架立杆轴力增幅影响超过10%。结论与普通脚手架设计相比,超高层建筑脚手架设计应进一步考虑高空风荷载附加轴力的影响,加强构造措施,以保证架体稳定性。The purpose of this paper is to study the influence of wind loads on the stability of scaffolding poles for super high-rise building and improve the theory of structural design.According to calculation and analysis,the computing formula of wind loads is improved and also checked in compliance with the engineering practical example.The influence of wind loads above 100m in the air on the axial stress of scaffolding standing pole varies with the ground clearance of the scaffolding base level and scaffolding erection scheme.The authors calculate and analyze the variation range and the variation law.The authors improve the computing methods of wind loads.Compared with the current standard,the effect of additional axial stress caused by the wind loads on the increase of axial stress on the scaffolding standing pole for super high-rise building exceeds 10%.Compared with normal scaffolding erection scheme,scaffolding erection scheme of super high-rise building must consider additional axial stress caused by the wind loads above 100 m in the air into account.In order to guarantee stability of the scaffold,measures of reinforcing the structure are needed.

关 键 词：风荷载 风振系数 附加轴力 稳定性 立杆轴力设计值 

分 类 号：TU731.2[建筑科学—建筑技术科学]