Simulative Model Test Study On U-shape Thin-wall Pre-stressed Concrete Aqueduct

With the development of national economy, some large and medium-sized water transfer project must be build to meet the need of water resources equilibrium. Aqueduct, an important intercross structure, has gotten wide appliance and developed continuously in many aspects as water runoff , structure type and construction technology.The U-shape Thin-wall concrete aqueduct received wide appliance because of its good over flow cross section and agile type, with the enlargement of flow quantitative, large cast-in-site U-shape thin-wall concrete aqueduct can be applied in some projects. The wall thickness of aqueduct must be decreased to meet the need of anti-seepage, crack control and stress. One-way or many-way Pre-stressed system received appliance on large U-shape thin-wall concrete aqueduct, but the effect of these Pre-stressed systems still has much to analyze, as well as reasonable structure analyze method of large U-shape thin-wall aqueduct.This paper analyzed the structural design of large cast-in-site U-shape thin-wall Pre-stressed concrete aqueduct as well as three-dimensional finite element mathematical model analysis integrated with 1:1 model test in site of DONGSHEN water transfer project, approved the feasibility of many-way Pre-stressed system used in large concrete U-shape thin-wall concrete aqueduct, it is feasible to design large-scale U-shape thin-wall concrete aqueduct according current design regulation and Structural mechanics method ,three-dimensional finite element mathematical model analysis may be a effect asserting method. For large cast-in-site U-shape thin-wall Pre-stressed concrete aqueduct as in DONGSHEN water transfer project, it is successful and reasonable for improving design and construction scheme to integrate with 1:1 model test in site in addition to structure computing and three-dimensional finite element mathematical model analysis.