波浪作用下砂质海床瞬时孔压特性的FLAC模拟  

Numerical Analysis of Wave-induced Transient Pore Pressures within Sandy Seabed in FLAC Program

作　　者：倪寅[1] 郑永来[1] 钟佳玉[1] 

机构地区：[1]同济大学水利工程系,上海200092

出　　处：《长江科学院院报》2009年第B10期38-41,共4页Journal of Changjiang River Scientific Research Institute

摘　　要：针对波浪荷载作用下砂质海床瞬时孔压响应问题,结合波流水槽模型试验实测结果,运用FLAC程序建立相应的流-固耦合本构模型,通过FISH函数使数值模型中的波浪加载与线性波理论相一致。并将数值模拟结果绘制成图和实测值进行比较分析,这是对FLAC渗流模块运用的拓展,以此进一步说明FLAC有较好的模拟波浪加载下海床孔压特性的能力。For the problem of wave-loading transient pore pressures response within the sandy seabed, this article is based on the results of wave flume model tests and uses FLAC program to build fluid-solidity coupled mechanical constitutive model which combines permeation fluid mechanics with linear wave theory to propose a new numerical simulation method of wave-induced transient pore pressures in the sandy seabed. The results obtained by numerical simulation and the measured values will be drawn together on one graph in order to be contrasted. The results can illustrate that the new method is feasible to simulate seepage behavior of seabed in FLAC program.

关 键 词：波浪作用 粗砂海床 瞬时孔隙水压 FLAC 

分 类 号：TV139.2[水利工程—水力学及河流动力学]