预应力渡槽有限元分析

针对预应力混凝土能极大提高混凝土结构抗拉抗裂强度的特点,结合等效载荷自平衡原理,以南水北调工程中大型预应力混凝土渡槽为模型,采用三维有限元技术分析其受力性能,揭示预应力渡槽在施工、校核等不同工况下的应力和应变等特性.计算结果表明,整个渡槽结构应力、变形满足设计要求,可为施工设计提供参考.

Finite element analysis on pre-stressed aqueduct

With the characteristic that pre-stressed concrete can improve tensile strength and crack resistance itself greatly, the mechanical behavior of large pre-stressed concrete aqueduct for China south-to- north water transfer project is numerically analyzed by using 3D finite element method, combined with the principle that equivalent loads are self-equilibrating. The stress and strain on the aqueduct are analyzed under different constructing and checking situations. The results indicate that the stress and deformation on the aqueduct can meet the design requirement and provide reference to construction design.