Active earth pressure acting on retaining wall considering anisotropic seepage effect

查看全文 作　　者：HU [1]Zheng;YANG Zhong-[1]xuan;Stephen Philip [2]WILKINSON

机构地区：[1]Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China;[2]Department of Civil Engineering, University ofWolverhampton, Wulfruna Street WV1 1LY, U.K.

出　　处：《Journal of Mountain Science》索引2017年第14卷第6期,共10页

基　　金：supported by the National Key R & D program of China (Grant No. 2016YFC0800204);the National Key Basic Research Program of China (Grant No. 2015CB057801);Natural Science Foundation of China (Grant Nos. 51578499 & 51761130078) 摘　　要：This paper presents a general solution for active earth pressure acting on a vertical retaining wall with a drainage system along the soil-structure interface. The backfill has a horizontal surface and is composed of cohesionless and fully saturated sand with anisotropic permeability along the vertical and horizontal directions. The extremely unfavourable seepage flow on the back of the retaining wall due to heavy rainfall or other causes will dramatically increase the active earth pressure acting on the retaining walls, increasing the probability of instability. In this paper, an analytical solution to the Laplace differential governing equation is presented for seepage problems considering anisotropic permeability based on Fourier series expansion method. A good correlation is observed between this and the seepage forces along a planar surface generated via finite element analysis. The active earth pressure is calculated using Coulomb's earth pressure theory based on the calculated pore water pressures. The obtained solutions can be degenerated into Coulomb's formula when no seepage exists in the backfill. A parametric study on the influence of the degree of anisotropy in seepage flow on the distribution of active earth pressure behind the wall is conducted by varying ratios of permeability coefficients in the vertical and horizontal directions,showing that anisotropic seepage flow has a prominent impact on active earth pressure distribution. Other factors such as effective internal friction angle of soils and soil/wall friction conditions are also considered. 关键词：主动土压力渗流效应各向异性挡土墙压力计算方法傅立叶级数展开法库仑土压力理论渗透系数

相关文献

参考文献（44）
引证文献（4）
耦合文献（16）

参考文献(44)

引证文献(4)

耦合文献(16)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Active earth pressure acting on retaining wall considering anisotropic seepage effect

参考文献(44)

引证文献(4)

耦合文献(16)

用户提示