摘要
目的研究风荷载作用下连墙件设置缺陷对脚手架立杆最大弯矩的影响程度和规律,为脚手架合理设计提供依据.方法考虑高层建筑施工脚手架风振影响计算出风载荷标准值,对扣件节点采用半刚性研究,利用有限元ANSYS分析软件对脚手架架体进行模拟分析,研究连墙件设置缺陷下架体立杆最大弯矩的变化及规律.结果从模拟分析中得出连墙件设置方式不同时脚手架立杆最大弯矩的变化趋势和结果,对比分析后得出当连墙件只与内立杆连接时,最大弯矩主要出现在有连墙件立杆节点处,其立杆最大弯矩增加,连墙件设置缺陷对脚手架立杆最大弯矩的影响程度可达近一倍.结论当连墙件设置只与内立杆相连时,对立杆弯矩增加较大,降低其承载力,在施工过程中脚手架连墙件设置应该保证与内外立杆同时连接.
In order to provide some design references for scaffold,influence of the tie members with defect on maximum bending moment of its upright tube under wind loads were studied. In viewof wind vibration for high-rise structure of scaffold,the scaffold structure was simulated to analyze the change of its upright tube maximum bending moment for the tie members with defect by ANSYS software. Semi-rigid nodes is applied to its connection joints. The maximum bending moment mainly appears at the joint when the tie member is only connected with the inner upright tube,and the maximum bending moment is obviously increased than that of other tie member. So the installation of the tie member should be connected with the inner and outer upright tube at the same time.
作者
秦桂娟
刘国文
QIN Guijuan;LIU Guowen(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第1期109-116,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家十二五科技支撑计划项目(2012BAJ13B05)
辽宁省自然科学基金项目(2013020143)
关键词
脚手架
立杆
连墙件
风荷载
最大弯矩
scaffold
upright tube
tie member
wind load
maximum bending moment
作者简介
秦桂娟(1963—),女,教授,博士,主要从事钢与混凝土组合结构等方面研究.
