期刊论文

Improved method for determining active earth pressure considering arching effect and actual slip surface

Liu, Zheng-fu

英文

中南大学学报(英文版)

2095-2899

2020

27

7

2032-2042

10.1007/s11771-020-4428-5

Foundation item : Projects(51978084, 51678073) supported by the National Natural Science Foundation of China; Project(2020JJ4605) supported by the Natural Science Foundation of Hunan Province, China; Project(2019IC13) supported by the International Cooperation and Development Project of Double First-Class Scientific Research in Changsha University of Science & Technology, China

本校为第一且通讯机构

To determine the distribution of active earth pressure on retaining walls, a series of model tests with the horizontally translating rigid walls are designed. Particle image velocimetry is used to study the movement and shear strain during the active failure of soil with height H and friction angle ϕ. The test results show that there are 3 stages of soil deformation under retaining wall translation: the initial stage, the expansion stage and the stability stage. The stable sliding surface in the model tests can be considered to be composed of ...

为研究挡土墙主动土压力分布规律,本文开展了刚性挡土墙平动模型试验,利用颗粒图像测速技术研究高度为H、内摩擦角为 φ 的无黏性土体在主动破坏过程中的位移和剪应变发展规律.试验结果表明,挡土墙发生平移时的土体变形可划分三个阶段:初始阶段,发展阶段和稳定阶段.稳定阶段的土体滑裂面由两部分组成,在0.82H～1.0H高度范围内,滑裂面为与水平面成 π/4+φ/2的平面,在0～0.82H高度范围内的滑裂面为曲面,该曲面处在对数螺旋面和与水平面成 π/4+φ/2的平面所夹区域之中.本文考虑土拱效应,基于差分法提出了适用于任意滑裂面形状的主动土压力计算方法,并根据实际滑裂面计算了土体主动土压力理论值.在...