丙巷河心墙土石坝施工和运行期的FEA连续分析

FEA Continuous Analysis of Bingxiang River Core Type Earth-rock Fill Dam during Its Construction and Operation

介绍了一种三相土体弹塑性渗流偶合模型的基本理论及其有限元(FEA)技术,对丙巷河水库粘土心墙土石坝标准剖面,从施工到蓄水再到库水位骤降工况下,的一次性应力、位移、渗流、坝坡稳定的部分计算成果;论述了分期施工填筑对大坝位移的影响和粘土心墙的"拱效应"。

This paper presents a basic theory of triphasic soil mass elastic-plastic seepage coupling model and its finite element analysis(FEA) technique as well as the condition and part of the results of the continuous stress, displacement, seepage, dam slope stability calculations for the standard profile of the Bingxiang river clay core earth-rockfill dam under the reservoir operation sequence of from construction to impounding and to sudden drawdown. The paper also deals with the effect of dam stage construction and placement on dam displacement and the clay core's 'arching effect'.