摘要
高聚物防渗墙近年来被广泛应用在堤坝的防渗加固工程中,同时耦合分析方法也成为分析坝体应力场和渗流场的研究热点。为了研究坝体增建高聚物防渗墙后,考虑渗流场和应力场的耦合作用和不考虑双场耦合作用下坝体和墙体的静动力响应,采用FLAC3D软件建立高聚物防渗墙土石坝应力场和渗流场的三维数值分析模型,分析坝体与墙体在静力荷载及地震荷载作用下的应力、位移、孔压和加速度的分布规律。研究表明,与非耦合分析计算结果相比,高聚物防渗墙土石坝耦合计算的应力值和位移值较大,更有利于坝体和墙体的安全性分析,为土石坝防渗加固和堤坝高聚物防渗墙工程抗震设计及施工提供参考依据。
In recent years,the polymer anti-seepage wall has been widely used in the seepage prevention and reinforcement project of the dam,at the same time,coupled analysis is becoming a hot spot in the study of dam calculation.This paper aimed to compare the static and dynamic response of the seepage field and stress filed under considering the coupling or not.Numerical analysis was used as the main research method and the three-dimensional analytical numerical model of earth-rock dam with polymer anti-seepage wall were established by the FLAC3D software,which used to analyze and conclude the distribution law of stress,displacement,pore pressure and acceleration of the dam body and the anti-seepage wall under the static and earthquake load.Researches show that the values of coupling computation of the stress and the displacement are larger than that of uncoupling,in another way,this method is more beneficial to the safety analysis of the dam and the polymer anti-seepage wall.It will provide the reference for anti-seepage and seismic resistance engineering of earth-rock dam.
作者
徐建国
刘成成
王博
寇磊
XU Jianguo;LIU Chengcheng;WANG Bo;KOU Lei(School of Water Conservancy & Environment,Zhengzhou University,Zhengzhou 450002,China;China Traffic Water Transport Planning and Design Institute Co.,Ltd.,Beijing 100007,China)
出处
《人民黄河》
CAS
北大核心
2019年第8期129-133,共5页
Yellow River
基金
国家重点研发计划项目(2016YFC0401600)
国家自然科学基金面上项目(51579226)
河南省科技攻关项目(182102210013,162102210011)
关键词
土石坝
高聚物防渗墙
耦合分析
地震响应
数值分析法
earth-rock dam
polymer anti-seepage wall
coupling analysis
seismic response
numerical analysis