Active Earth Pressure of Limited C-φ Soil Based on Improved Soil Arching Effect
Open Access
- 7 May 2020
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 10 (9), 3243
- https://doi.org/10.3390/app10093243
Abstract
For c-φ soil formation (cohesive soil) of limited width with ground surface overload behind a deep retaining structure, a modified active earth pressure calculation model is established in this study. And three key issues are addressed through improved soil arching effect. First, the soil-wall interaction mechanism is determined by considering the soil arching effect. The slip surface of a limited soil is proved to be a double-fold line passing through the retaining wall toe and intersecting the side wall of the existing underground structure until it reaches the ground surface along the existing side wall. Second, the limited width boundary is explicated. And third, the variation in the active earth pressure from parameters of limited c-φ soil is determined. The lateral active earth pressure coefficient is nonlinear distributed based on the improved soil arching effect of the symmetric catenary curve. Furthermore, the active earth pressure distribution, the tension crack at the top of the retaining wall and the resultant force and its action point were obtained. By comparing with the existing analytical methods, such as the Rankine method, it demonstrates that the model proposed in this study is much closer to the measured and numerical results. Ignoring the influence of soil cohesion and the limited width will exponentially reduce the overall stability of the retaining structure and increase the risk of accidents.Funding Information
- The National Natural Science Foundation of China (51938008, L1924061)
This publication has 49 references indexed in Scilit:
- Observations of dynamic and non-dynamic interactions between a quay wall and partially stabilised backfillSoils and Foundations, 2012
- New procedure for active earth pressure calculation in retaining walls with reinforced cohesive-frictional backfillGeotextiles and Geomembranes, 2009
- Study on the action of the active earth pressure by variational limit equilibrium methodInternational Journal for Numerical and Analytical Methods in Geomechanics, 2009
- Evaluating the effects of the magnitude and amplification of pseudo-static acceleration on reinforced soil slopes and walls using the limit equilibrium Horizontal Slices MethodGeotextiles and Geomembranes, 2008
- Limited reinforced space in segmental retaining wallsGeotextiles and Geomembranes, 2004
- An integrated limiting equilibrium approach for design of reinforced soil retaining structures: Part I—formulationGeotextiles and Geomembranes, 2004
- Horizontal slice method of analysisGéotechnique, 2001
- An efficient search method for finding the critical circular slip surface using the Monte Carlo techniqueCanadian Geotechnical Journal, 2001
- Upper bound estimate of scaled reinforced soil retaining wallsGeotextiles and Geomembranes, 2000
- Experimental investigation of the pressure of a loose medium on retaining walls with a vertical back face and horizontal backfill surfaceSoil Mechanics and Foundation Engineering, 1965