大跨度U型渡槽施工顺序研究  

Study on Construction Sequence of Large Span U Type Aqueduct

作　　者：蒋婉莹[1] 徐芳芳 

机构地区：[1]南京水利科学研究院南京瑞迪建设科技有限公司,江苏南京210029

出　　处：《陕西水利》2018年第1期121-124,共4页Shaanxi Water Resources

摘　　要：大型渡槽受力和结构较复杂,在施工和运行期的应力状态对渡槽的强度安全有直接的影响。为确保大型渡槽结构在施工期和运行期的安全,通过建立某大型渡槽有限元分析的模型,将渡槽在施工中的纵向、环向筋张拉、拆模、变温等过程分成若干荷载步,以混凝土的拉应力为控制标准,用有限元模拟分析多种施工过程,得到满足应力控制标准的可行较优施工方案。The stress and structure of a large aqueduct are complex, and the stress state in the period of construction and operation has a direct influence on the strength and safety of the aqueduct. In order to ensure the aqueduct structure in the period of construction and operation safety, through the establishment of a large finite element analysis model, the longitudinal and ring aqueduct in the construction of the muscle tension and temperature, stripping process into several load steps, the concrete tensile stress control standard, using finite element analysis a variety of construction process, satisfy the stress control standard and feasible construction plan, in order to provide reference for similar design and construction of large aqueduct.

关 键 词：渡槽 有限元分析 施工顺序 预应力筋 

分 类 号：TV672.3[水利工程—水利水电工程]