摘要
详细地介绍了在流-固耦合分析过程中,特征时间和渗透边界条件的给定方法。并将其应用到泰安抽水蓄能电站围堰的流-固耦合分析中,同时,分析了基础开挖过程对围堰和基础边坡稳定性的影响。在开挖过程中,由于给定了透水边界和较合理的特征时间,最终结果表明,围堰和基础内的孔隙水压力明显下降,是由于开挖后透水边界增长,以及计算流体的特征时间增长的缘故。说明了用FLAC进行流-固耦合分析时,考虑特征时间和渗透边界条件是很重要的。
The paper chiefly deals with the given method of the characteristic time and fluid boundary condition in the analysis course of the fluid-solid couple, which is applied to analyze the couple of fluid-solid of the cofferdam of Taian Pumped Storage Power Station. At the same time, it studies the influence of the foundation excavation on the stability of the cofferdam and the slope of the foundation. For the sake of giving the fluid-flow boundary and the proper characteristic time in the excavating process, the last result makes clear the distinct drop of the pore pressure in the cofferdam and foundation. The reason is, firstly, the enlargement of fluid-flow boundary after the excavation and, secondly, the lengthenment of the fluid-flow time in the computation. Those indicate the importance of the characteristic time and fluid boundary in the course of the fluid-solid couple analysis.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第1期82-86,共5页
Rock and Soil Mechanics
关键词
特征时间
FLAC
渗流
流-固耦合
围堰
characteristic time
FLAC
seepage
fluid-solid coupling
cofferdam
