基于可靠度理论的大型预应力联体渡槽的优化设计方法

Optimization of Large Prestressed Conjoined Aqueduet Based on Reliability Theory

渡槽在我国南水北调工程的广泛使用,使其成为水利水电工程建设中的一种重要的输水建筑物。由于渡槽的架空性质及南水北调跨流域调水工程的重要性,其具有了复杂的空间结构、巨大的体积、较大的宽度和较大的高宽比及承受三维预应力的槽身。这种结构不论是在设计模式上还是在施工、运用中都将面临不确定因素的影响。因此对这种新型结构开展设计方法与施工技术研究十分迫切,对实际工程具有重要的理论和实用价值。以南水北调中线工程中跨洺河大型多侧墙预应力矩形渡槽为例进行分析。

Aqueduct is an important water conseryance structure in the construction of water conservancy and hydropower,and it widely used in South-to-North Water Transfer Project.Because of its overhead properties and the importance of South-to-North Water Transfer Project,Aqueduct has a complex spatial structure,huge size,the large ratio of width to height and the tank body that bearing the three-dimensional prestressing.This structure will influence by the uncertainties factors both in design mode and construction.So it is urgent and necessary to research this new structure,and it has important theoretical and practical value.This paper mainly analyzed large rectangle aqueduct with multi-sidewall prestressed in Kuaming River and given the conclusion.