Granular Mechanics of the Active Lateral Pressure on Retaining Walls Rotating About the Top

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In granular soils, stresses are transmitted by chains of contact forces from grain to grain. In this work, the average stresses are obtained based on two simplifying hypotheses: the linearization of the chains, and their association with bands of soil. In this way, the intersection of two conjugate bands gives rise to the definition of the basic element of the granular soil: the rhomboid, whose weight is resolved into two unitary forces of contact, which are added along an associated band to achieve the resultant force acting on the back face of a rigid retaining wall. As the kinematics of a wall rotating about its top requires that the lower grains rotate with respect to the upper grains of the backfill, the contact force against the wall follows a passive direction, whereas the conjugate force remains at the original direction, given by the at rest stress state. Because of the angle of the passive chain is greater than the failure angle, the lateral pressure becomes bilinear, with the maximum value near the top, in agreement with the experimental results of several authors. Hence, the lateral force is similar to that of Coulomb, but the point of application is higher.

Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 2
EditorsMarco Barla, Alice Di Donna, Donatella Sterpi
PublisherSpringer Science and Business Media Deutschland GmbH
Pages127-135
Number of pages9
ISBN (Print)9783030645175
DOIs
StatePublished - 2021
Event16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021 - Turin, Italy
Duration: 5 May 20218 May 2021

Publication series

NameLecture Notes in Civil Engineering
Volume126
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021
Country/TerritoryItaly
CityTurin
Period5/05/218/05/21

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Keywords

  • Chains of forces
  • Granular kinematics
  • Granular mechanics
  • Rotating wall
  • Soil pressure

Fingerprint

Dive into the research topics of 'Granular Mechanics of the Active Lateral Pressure on Retaining Walls Rotating About the Top'. Together they form a unique fingerprint.

Cite this