基于温控参数折减有限元法的水库进水塔-地基结构稳定分析

针对边坡稳定分析中采用的强度折减有限元法,提出用温度场控制强度参数折减和变形参数调整的有限元法,对结构复杂的水库进水塔-地基3维结构进行稳定分析,较于传统的强度折减有限元法大大提高了计算效率。用考虑变形参数调整和不考虑变形参数调整的温控强度折减有限元法,分别对算例进行分析,并将其和水压超载法计算进行对比计算,综合不同部...

Stability Analysis of Reservoir Intake Tower-base Structure Based on Temperature Driving Parameters Reduction FEM

Abstract: On the basis of slope stability due to gravity based on strength reduction FEM, temperature driving strength reduction FEM considering deformation parameters modification was proposed and studied for the stability analysis of 3D reservoir intake tower-base complex structure, it was more efficient than traditional strength reduction FEM. Temperature driving strength reduction FEM considering deformation parameters modification and not considering it were applied to analyze the reservoir intake tower-base complex structure under the given conditions, a comparison calculation was also employed by the use of overloading hydraulic pressure, by getting the curves of currentwise displacement vs. time of nodes in different place, tracing the variation of equivalent plastic strain of the whole structure and the convergence or disvergence of the computation, the factor of safety and the possible factor that may lead the collapse of the structure were gained. The analysis results showed that the calculated results gained from temperature driving strength reduction FEM considering deformation parameters modification was more reasonable, it also closed to that from overloading hydraulic pressure method.