摘要
介绍2种新型免落地临时支撑形式,在结构主梁上设置主、次龙骨分担上部荷载。建立数值模型,通过改变临时支撑的布置形式,对比各模型下钢筋桁架楼承板的挠度,从而比较各临时支撑布置形式对楼承板受力能力的改善效果,最终对布置方案进行优化。分析结果表明,通过增加临时支撑主、次龙骨、减小次龙骨间距等措施可减小结构变形;在主、次龙骨间增设传力构件,可更好地改善钢筋桁架楼承板的受力情况。
Two new forms floor⁃free temporary support are introduced.The main and secondary keels are set on the main beam of the structure to share the upper load.Numerical models are established.By changing the layout of temporary support,the deflection of the steel truss floor slab under each model is compared,so as to compare the improvement effect of the layout of temporary support on the bearing capacity of the floor slab,and finally the layout scheme is optimized.The analysis results show that the structural deformation can be reduced by increasing the main and secondary keel of temporary support and reducing the spacing of secondary keel.Adding force transmission components between the main and secondary keel can better improve the stress of the bearing plate of the reinforced truss floor support plate.
作者
周海军
杨磊
ZHOU Haijun;YANG Lei(China Railway 20th Bureau Group Co.,Ltd.,Xi’an,Shaanxi710016,China;No.6 Engineering Co.,Ltd.of CR20G,Xi’an,Shaanxi710032,China)
出处
《施工技术（中英文）》
CAS
2022年第16期120-124,共5页
Construction Technology
基金
住房和城乡建设部科技计划项目:基于智能建造理论的超高层建筑临时支撑结构安全控制关键技术研究(2021⁃K⁃77)。
关键词
钢筋桁架楼承板
临时支撑
免落地
数值模拟
优化
reinforced truss floor support plate
temporary supports
floor⁃free
simulation
optimization
