Explanation and Application of the Evolving Contact Traction Fields in Shallow Foundation Systems

Taylor, Adam G.; Chung, Jae H.

doi:10.3390/geotechnics2010004

Explanation and Application of the Evolving Contact Traction Fields in Shallow Foundation Systems

Journal Article · Fri Jan 14 00:00:00 EST 2022 · Geotechnics

DOI:https://doi.org/10.3390/geotechnics2010004· OSTI ID:1840841

^[1]; Chung, Jae H. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The present paper provides a qualitative discussion of the evolution of contact traction fields beneath rigid shallow foundations resting on granular materials. A phenomenological similarity is recognized in the measured contact traction fields of rigid footings and at the bases of sandpiles. This observation leads to the hypothesis that the stress distributions are brought about by the same physical phenomena, namely the development of arching effects through force chains and mobilized intergranular friction. A set of semi-empirical equations are suggested for the normal and tangential components of this contact traction based on past experimental measurements and phenomenological assumptions of frictional behaviors at the foundation system scale. These equations are then applied to the prescribed boundary conditions for the analysis of the settlement, resistance, and stress fields in supporting granular materials beneath the footing. A parametric sensitivity study is performed on the proposed modelling method, highlighting solutions to the boundary-value problems in an isotropic, homogeneous elastic half-space.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1840841

Report Number(s):: LLNL-JRNL--811338; 1017345

Journal Information:: Geotechnics, Journal Name: Geotechnics Journal Issue: 1 Vol. 2; ISSN 2673-7094

Publisher:: MDPICopyright Statement

Country of Publication:: United States

Language:: English

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contact pressure distribution
elasticity
shallow foundations
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Explanation and Application of the Evolving Contact Traction Fields in Shallow Foundation Systems

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