DEM Models to Predict Side Shear Resistance of Rock-Socketed Piles Considering Socket Roughness

Gutiérrez Chacón, José Gregorio and Melentijevic, Svetlana and Senent Domínguez, Salvador and Jiménez Rodriguez, Rafael (2019). DEM Models to Predict Side Shear Resistance of Rock-Socketed Piles Considering Socket Roughness. In: "53rd U.S. Rock Mechanics/Geomechanics Symposium", June 23–26, 2019, New York City, New York. pp. 1-7.

Description

Title: DEM Models to Predict Side Shear Resistance of Rock-Socketed Piles Considering Socket Roughness
Author/s:
  • Gutiérrez Chacón, José Gregorio
  • Melentijevic, Svetlana
  • Senent Domínguez, Salvador
  • Jiménez Rodriguez, Rafael
Item Type: Presentation at Congress or Conference (Other)
Event Title: 53rd U.S. Rock Mechanics/Geomechanics Symposium
Event Dates: June 23–26, 2019
Event Location: New York City, New York
Title of Book: Proceedings of the 53rd US Rock Mechanics/Geomechanics Symposium
Date: 23 June 2019
Subjects:
Freetext Keywords: Socket Roughness, Resistance, Uniaxial Compressive Strength, Rock-Socketed Pile, Reservoir Characterization, Upstream Oil & Gas, Average Side Shear Resistance, Geotech, Roughness, Particle
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería y Morfología del Terreno
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Rock-socketed piles are designed to receive and transmit large concentrated loads to deeper stronger materials. Although the load transfer mechanism combines base and side resistances, the side shear resistance is usually mobilized at much lower strains than base resistance. The side shear resistance of rock-socketed piles has usually been estimated using recommendations from codes and standards, or using local knowledge obtained from load tests performed in similar ground. There are also empirical formulations as a function of the uniaxial compressive strength of the intact rock (UCS). However, this approach neglects the influence of other important aspects such as the roughness at the pile-rock interface. This work examines the socket roughness effect on side shear resistance of rock-socketed piles, using DEM3D numerical models of rock-socketed piles with different degrees of socket roughness. Numerical results suggest that socket roughness is an important factor that significantly increases the load capacity and stiffness of rock-socketed piles. Finally, a new approach to predict preliminary the average side shear resistance of rock-sockets is analysed, considering the socket roughness and the UCS of the intact weaker material (rock or pile).

More information

Item ID: 67839
DC Identifier: https://oa.upm.es/67839/
OAI Identifier: oai:oa.upm.es:67839
Official URL: https://onepetro.org/ARMAUSRMS/proceedings-abstract/ARMA19/All-ARMA19/ARMA-2019-1757/125008
Deposited by: Memoria Investigacion
Deposited on: 29 Sep 2021 15:12
Last Modified: 29 Sep 2021 15:12
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