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针对不同地质条件及不同超载系数情况下扬压力等效模拟方法的效果问题,使用地质力学模型试验与有限元计算相结合的方法,通过对均质地基及含有软弱结构面的复杂地基上的重力坝进行分析研究,对比分析地质力学模型试验、利用有限元进行计算的等效扬压力模型和实际扬压力模型(以下简称等效模型和实际模型)所得结果,验证不同地基条件及不同超载系数情况下扬压力等效模拟的可行性。结果表明,扬压力等效模拟的方法在均质地基和复杂地基的不同超载系数下均能较为合理地实现对重力坝扬压力的等效,应用于地质力学模型试验中是可行的。
In view of the effect of the equivalent pressure method of uplift pressure under different geological conditions and different overload factors, the method of combining the geomechanical model test and the finite element method is adopted. Dam analysis and research, comparative analysis of the geomechanical model test, the use of finite element calculation of the equivalent pressure model and the actual pressure model (hereinafter referred to as the equivalent model and the actual model) of the results obtained to verify the conditions of different foundation and different overload conditions Fell pressure feasibility of the equivalent simulation. The results show that the method of equivalent pressure of uplift pressure can achieve the equivalence to the uplift pressure of gravity dam more reasonably under the different overloading coefficients of homogeneous foundation and complex foundation. It is feasible to apply it in the geomechanical model test.