| 朱晟,曹广晶,张超然,周良景.茅坪溪土石坝安全复核[J].水利学报,2004,35(11):0124-0128 |
| 茅坪溪土石坝安全复核 |
| Verification of rockfill dam safety according to back analysis of monitoring data |
| 投稿时间：2003-10-08 |
| DOI： |
| 中文关键词: 沥青混凝土防渗心墙 堆石坝 安全复核 非线性粘弹性模型 |
| 英文关键词: asphalt-concrete core wall rockfill dam safety checking nonlinear visco-elasto model |
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| 中文摘要: |
| 利用施工期的现场监测资料，应用非线性粘弹性有限元仿真分析，对茅坪溪土石坝进行了安全复核。采用邓肯E-μ模型作为坝体填料的本构关系模型，沥青混凝土材料参数根据监测资料反演求得。大坝的安全复核分析结果揭示了分区填筑的高沥青混凝土心墙的变形和应力特性。结论认为：水库蓄水后沥青混凝土心墙不会产生水力劈裂，大坝是安全的。 |
| 英文摘要: |
| The safety of the Maopingxi rockfill dam was checked by monitoring data in the stage of construction. The nonlinear visco-elasto FEM analysis on the dam was carried out. The parameters of asphalt concrete core material for Duncan E-μ model were deduced from the back analysis of monitored data. The simulation revealed the complicated strain and stress distributions of the dam in the process of construction. It is concluded that the hydraulic fracture will not happen to the asphalt-concrete impervious core wall since the vertical stress at the bottom increased during filling of the dam. The safety of the dam can be ensured. |
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