Analytical solution for the response of a flexible retaining structure with an elastic backfill

作者：Jung Chulmin^*; Bobet Antonio; Fernandez Gabriel

来源：International Journal for Numerical and Analytical Methods in Geomechanics, 2010, 34(13): 1387-1408.

DOI：10.1002/nag.873

• retaining walls
• seismic earth pressure
• wall flexibility
• rigid-body motions
• frictional characteristics of interface

An extension of an existing analytical solution for the response of a flexible retaining wall subjected to seismic loading is presented. The solution is based on the assumption that the wall and the soil remain elastic and that there are no shear stresses at the wall-soil interface while the contact remains tied. In addition to the wall displacements due to bending, the wall can experience rigid-body motions due to rotation and horizontal and vertical movements. The solution is verified by comparing its results with those of a finite element method. Results from the analytical solution together with those of the (FEM) are used to identify and quantify the relative importance of key parameters on the seismic response of a wall. The study shows that wall flexibility and horizontal rigid-body motions of the wall and frequency content of the seismic input have a significant effect on the wall loads. The pressures behind a rigid wall decrease as the wall rotates about its base, whereas for a flexible wall, the soil pressures decrease as the friction between the backfill and the wall increases. The rigid-body vertical movements of a wall have little impact on the dynamic pressures induced in the wall, except for a flexible wall where, when prevented, the dynamic loads may be reduced.

• 出版日期2010-9