大型预应力排水渡槽结构设计的初步探讨

南水北调工程为了解决左岸排水问题，设计了大量的排水渡槽。排水渡槽常年处于无水状态，其实际工作环境与普通过水渡槽有很大区别。初步探讨了排水渡槽的结构设计，推导出了适用于排水渡槽的一种设计方法，并利用有限元软件对各个工况复合验算。最后通过模拟温度场，初步得出温度荷载对预应力排水渡槽结构受力有重要影响，为以后的相关设计提供参考依据。

Tentative Approach to Structural Design of Large Pre-stress Drainage Aqueduct

In order to solve the drain question of the Left-Bank ,South-To-North Water Transfer Project design lots of drainage aqueduct. Drainage aqueduct is in the anhydrous state perennially, the actual working environment is greatly different with ordinary aqueduct. In this paper, the characteristics of the drainage Aqueduct , the section size and preliminary of pre-stressed tendons were first designed, and then using the finite ele- ment method to check the status of all workers. Finally, through simulating the temperature field, the temperature load have important implications on the pre-stressed drainage Aqueduct structure, this can provide reference method and basis for future design.