Active static and seismic earth pressure for c–φ soils

Abstract

Rankine classic earth pressure solution has been expanded to predict the seismic active earth pressure behind rigid walls supporting c-φ backfill considering both wall inclination and backfill slope. The proposed formulation is based on Rankine's conjugate stress concept, without employing any additional assumptions. The developed expressions can be used for the static and pseudo-static seismic analyses of c-φ backfill. The results based on the proposed formulations are found to be identical to those computed with the Mononobe-Okabe method for cohesionless soils, provided the same wall friction angle is employed. For c-φ soils, the formulation yields comparable results to available solutions for cases where a comparison is feasible. Design charts are presented for calculating the net active horizontal thrust behind a rigid wall for a variety of horizontal pseudo-static accelerations, values of cohesion, soil internal friction angles, wall inclinations, and backfill slope combinations. The effects of the vertical pseudo-static acceleration on the active earth pressure and the depth of tension cracks have also been explored. In addition, examples are provided to illustrate the application of the proposed method.

Axisymmetric active lateral earth pressure for c- soils using the stress characteristics method

“…This e ect is greater for larger values Lin et al [38] Iskander et al [37] Peng [41] Peng and Chen [21] This study 10 of c . When the plastic critical depth is considered in the solution, p a is always positive.…”

“…of the active lateral earth pressure is zero from the ground surface to the plastic critical depth [22,[37][38][39][40][41].…”

Static and Seismic Stability Charts for Three‐Dimensional Cut Slopes and Natural Slopes under Short‐Term Undrained Conditions

“…In the present paper, the analytical approach originated by Michalowski and Drescher [23] and extended by Gao et al [26] is further exploited to derive the stability charts for inhomogeneous cut slopes and natural slopes (as shown in Figure 1) under both static and pseudostatic seismic loading conditions [27][28][29]. e stability charts are plotted for a range of parameters wider than those presented by Li et al [18,22].…”

Active earth pressure for soils with tension cracks under steady unsaturated flow conditions

“…Seeking a more accurate estimation on it is of great significance for safe and economical construction of retaining walls. Until now, many attempts have been made, considering different circumstances, such as seismic actions (e.g., Iskander et al 2013) and seepage effects (Barros and Santos 2012), using different methods, such as limit equilibrium (Li and Liu 2010), numerical approaches (Benmeddour et al 2012) and limit analysis (Yang 2007). The available work was mainly carried out assuming the soils behind retaining walls to be dry or saturated.…”