摘要
常用高空现浇梁存在支架地基处理难度大、支架用钢量大、费用高、支架高宽比大、搭设高度受限及稳定性不足等问题。为解决上述问题,自主设计了一种用于高空现浇结构的大跨斜腿支架,详细阐述了该种支架的设计构造、受力机理、施工工艺等,通过有限元软件建立斜牛腿支架力学计算模型,分析其承载能力和变形情况。该支架在赣深铁路高峰水库特大桥中成功应用,缩短了施工工期,确保了施工安全,还大幅节省施工成本,为今后类似高空现浇混凝土结构提供施工参考。
The common high-altitude cast-in-place beam has the issues of difficult foundation treatment,large steel usage,high cost,large height-width ratio,limited erection height and insufficient stability.In order to solve the above issues,a type of large-span inclined corbel support for high-altitude cast-in-place structure is independently designed,and the design structure,stress mechanism and construction process of the support are described in detail.The mechanical calculation model of the inclined corbel support is established by finite element method,and its load-bearing capacity and deformation are analyzed.The support is successfully applied in Gaofeng Reservoir Bridge of Ganzhou—Shenzhen Railway,which shortens the construction period,ensures the construction safety,and significantly saves the construction cost.It provides a reference for the construction of similar high-altitude cast-in-place concrete structures in the future.
作者
祝平华
ZHU Pinghua(The Fifth Construction Co.,Ltd.of China Tiesiju Civil Engineering Group,Jiujiang 332000,Jiangxi,China)
出处
《建筑施工》
2024年第3期305-308,312,共5页
Building Construction
基金
中铁四局集团有限公司科技研发项目(2021-42)。
关键词
斜牛腿支架
设计构造
有限元
承载能力
稳定性
工程应用
inclined corbel support
design structure
finite element
bearing capacity
stability
engineering application
