摘要
为了进一步发展和推广绿色基坑支护技术,研发了一种大跨度张弦梁及组合型钢桁架基坑支护结构体系,通过与传统预应力鱼腹式钢支撑的对比分析,表明该支护结构体系具有节点构造简化、优化平面布置、增强支点刚度、提高整体稳定性和便于预应力施工等优点.大跨度张弦梁及组合型钢桁架支撑体系在徐州2018-23地块(中环赞城)基坑支护工程进行了推广应用,现场监测结果表明:该支护结构体系在基坑工程中具备安全性、可靠性和经济性.研究成果为今后大跨度张弦梁及组合型钢桁架基坑支护系统的设计提供借鉴.
In order to further develop and promote the green foundation pit supporting technology,a large-span beam string and composite steel truss foundation pit supporting structure system is developed.Through the comparative analysis with the traditional prestressed fish bellied steel support,it shows that the supporting structure system has the advantages of simplified node structure,optimized plane layout,enhanced support stiffness,improved overall stability and convenient prestressed construction.The large-span beam string and composite steel truss support system has been widely used in the foundation pit support engineering of Xuzhou 2018-23 plot(central zancheng).The field monitoring results show that the support structure system has safety,reliability and economy in the foundation pit engineering.The research results can provide reference for the design of large-span beam string and composite steel truss foundation pit support system in the future.
作者
王爱民
陈亚东
陈卫国
王琳
WANG Aiming;CHEN Yadong;CHEN Weiguo;WANG Lin(Huai'an Architectural Designand Research Institute Co.,Ltd,Huai'an,Jiangsu 223001,China;School of Architectural Engineering,Huaiyin Institute of Technology,Huai'an,Jiangsu 223001,China;Jiangsu Sanli Geotechnical Technology Co.,Ltd,Xuzhou,Jiangsu 221000,China;Jiangsu Changan Foundation Engineering Co.,Ltd,Huai'an,Jiangsu 223001,China)
出处
《江苏建筑职业技术学院学报》
2020年第4期24-28,共5页
Journal Of Jiangsu Vocational Institute of Architectural Technology
基金
国家自然科学基金资助项目(51408254)
江苏省六大人才高峰资助项目(JZ-051)
关键词
张弦梁
型钢桁架支撑
基坑支护
预应力支撑
beam string
steel truss support
foundation pit support
prestressed support
