3项关键性技术在U型薄壳渡槽施工中的应用  

Application of Three Key Techniques in Construction of U-shape Thin Shell Aqueducts

作　　者：张多新[1] 王清云[1] 丁立杰[1] 刘琰玲[1] 

机构地区：[1]华北水利水电学院土木工程系,河南郑州450011

出　　处：《华北水利水电学院学报》2006年第1期15-17,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：水利部科技创新项目(SCX2001-15)

摘　　要：跨流域调水工程中,巨型渡槽的施工技术是困扰渡槽建设的一个难题.针对实际工程,对预应力U型薄壳渡槽施工过程中的3项关键工艺:移动式造槽机的应用、高性能混凝土的施工技术、预应力钢绞线的张拉的施工经验进行了总结,给出了高性能混凝土的优化配制及浇筑技术和预应力钢绞线的张拉顺序,为预应力U型渡槽的建设提供了安全保障;移动式造槽机应用于U型薄壳渡槽建设的模板工程中,提高了施工速度和工程质量,解决了跨河施工的难题,可为同类工程的建设参考.In trans-basin water diversion projects, one of the difficulties encountered is the construction of huge aqueducts. The experiences of application of three key techniques in construction of prestressed U-shape thin shell aqueducts （application of moveable aqueduct-making ma- Chines, construction technique of high-performance concrete, and stretching of prestressed steel twisted Wire） are summarized based on actual project practices. Optimized ingredient and pouring technique of high-performance concrete and the process of stretching prestressed steel twisted wire are presented, both of which could ensure safety for construction of huge prestressed U-shape aqueducts.

关 键 词：U型薄壳渡槽 施工技术 造槽机 高性能混凝土 预应力 

分 类 号：TV672.3[水利工程—水利水电工程] TV332.4