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。
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.
出处
《水利学报》
EI
CSCD
北大核心
2004年第11期124-128,共5页
Journal of Hydraulic Engineering
