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ABSTRACT
This article discusses earth pressure at rest and the active and passive states in soil-structure interactions for retaining walls. It explains the relationship between horizontal and vertical stresses through the coefficient of earth pressure at rest and how soil displacement affects the mobilization of active and passive pressures. Calculation methods such as Coulomb, Rankine, and Boussinesq are addressed, considering soil-wall friction and complex mechanical interactions. The article also highlights the use of Mohr's circles to visualize soil stress states and the application of Kérisel and Absi's tables to accurately determine active and passive earth pressure coefficients.
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Thibault FOURCADE: Engineer
INTRODUCTION
Interactions between soils and retaining structures are complex and essential for the stability of civil engineering structures. The study of earth thrust, whether at rest, active or passive, enables us to understand and anticipate the forces exerted by the soil on structures such as retaining walls. This article explores the different states of horizontal stress, the associated calculation methods, and the effects of ground displacements. The concepts of thrust and abutment coefficients, as well as the classical Coulomb, Rankine and Boussinesq methods, are discussed in detail to provide a comprehensive understanding of these phenomena.
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KEYWORDS
retaining wall | Soil action | Thrust
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Soil action on a retaining wall
Initial state
Bibliography
Standards and norms
- Geotechnical calculations – Retaining structures – Screens - NF P94-282 - Mars 2009
- Justification of geotechnical structures – Eurocode 7 national application standards – Surface foundations - NF P94-261 - Juin 2013
- Eurocode 7: geotechnical design – Part 1: General rules - NF EN 1997-1/A1 - Avril 2014
- Geotechnical calculations – Retaining structures – Reinforced earthworks and nailed soil - NF...
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