摘要
针对经典接触力学假设接触表面为几何光滑面的不足,基于Hertz接触力学和弹塑性理论,考虑坝体与坝基互馈面在外界荷载作用下面积的变化,并借助岩体水力学知识,建立坝体与坝基系统中渗流场与应力场的互馈模型;研究混凝土坝坝体与坝基互馈力学模型的算法,并基于遗传算法开发相应计算程序。最后,就水口混凝土重力坝进行互馈计算。
In the concrete dam body and foundation systemt,here are interactions between human being′s activity,rock′s stress and seepage of groundwater,which are called crossfeed.Aiming at the shortcoming of the typical contact mechanics in which the contact surface is considered to be smooth,with the help of the Hertz contact mechanics and elastoplastic theory,the variation of the contact area is considered between the dam body and dam foundation under the loads.With the rock hydrology theory,the crossfeed model including the seepage field and the stress field of the dam body and dam foundation system is set up.Finally the program of the corssfeed model based on the genetic algorithm is developed,which is used to calculate a concrete gravity dam.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第A01期3017-3024,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家重点基础研究发展规划(973)项目(2002CB412707)
国家自然科学基金重点项目(50139030)
关键词
水利工程
混凝土坝
坝体
坝基
互馈
hydraulic engineering
concrete dam
dam body
dam foundation
crossfeed
