基于NASGEWIN对杨家园水电站大坝整体稳定的分析评价

Analysis and Evaluation of Overall Stability of Yangjiayuan Hydropower Station Dam Based on NASGEWIN

通过采用四川大学编制的NASGEWIN三维有限元软件对杨家园水电站大坝整体稳定进行计算,并结合监测结果对大坝施工期、蓄水期、蓄水后的结构稳定计算结果进行对比分析。结果表明,采用各阶段结果进行对比,更能真实客观地反映大坝性态。该分析评价结果对水库今后运行调度及大坝安全维护提供了理论依据,对同类工程结构安全评价具有借鉴意义。

The overall stability of Yangjiayuan Hydropower Station dam is calculated by using NASCEWIN three dimensional finite element software compiled by Sichuan University,and the structural stability calculation results during construction period,impoundment period and after impoundment are compared and analyzed based on the monitoring results.The results show that the comparison of the results of each stage can reflect the dam behavior more truly and objectively.The analysis and evaluation results provide a theoretical basis for future reservoir operation and dam safety maintenance,and have reference significance for similar engineering structure safety evaluation.