南水北调涵洞式矩形渡槽运营期有限元仿真分析

Finite Element Simulated Analysis for Culvert-shaped Rectangular Aqueduct of South-to-North Water Transfer Project in Operation Process

采用结构优化设计方法,借助三维有限元分析软件ANSYS,针对大型涵洞式矩形渡槽结构方案,建立了渡槽的有限元模型,考虑了渡槽在运营过程中的10种工况组合,通过计算和实验数据进行分析,对比这些方案和模型的原理、方法、结果及其在实际工程应用中存在的问题,得出不同过水量下槽体结构应力及位移的变化规律等结论,计算结果具有较好的精度,满足工程要求,为同类预应力矩形渡槽的设计提供理论依据和指导。

Through adopting the optimal design of structure, the finite element model of the aqueduct is set up with the help of 3D software ANSYS and according to the large-scale culvert-shaped rectangular aqueduct. And considering ten combinations of operating condition of the aqueduct in operation process, the stress and displacement rules of the aqueduct are obtained through analyzing and contrasting the theory, methods, results and the existed problems in actual application in the above schemes and models. The calculated result has a good precision, could satisfy the needs of practical engineerings, and could supply theoretical bases for the design of similar prestressed rectangular aqueducts.