【摘要】 采用有限元法对拉西瓦拱坝–地基系统进行弹塑性数值模拟,并采用1∶250的模型比例尺对拉西瓦拱坝–地基系统进行地质力学模型试验。在此基础上,采用数值模拟和模型试验相结合的综合分析方法,对拉西瓦拱坝–地基系统进行稳定性分析。分析结果表明,数值模拟和模型试验结果非常吻合,拉西瓦拱坝–地基系统整体稳定能满足一般设计的要求,其安全储备为6.0～8.0倍水荷载。更多还原

【Abstract】 The elastoplastic numerical and experimental results of Laxiwa arch dam-foundation system are presented by employing a finite element method simulation(TFINE code) and a geomechanical model experiment with scale 1∶250.The failure mode of the arch dam-foundation during overloading process is given with the above two methods.By analyzing and comparing the numerical and experimental data,it is indicated that the results of numerical simulation agree well with experimental results;and the stability of Laxiwa arch dam satisfies the general requests of arch dam design.更多还原