An analysis method for the effects of tunnelling on loaded non-displacement piles

Franza, Andrea and Marshall, Alec M and Jimenez, Rafael (2019). An analysis method for the effects of tunnelling on loaded non-displacement piles. In: "XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE)", 17-20 Noviembre 2019, Cancun, Mexico. https://doi.org/10.3233/STAL190174.

Description

Title: An analysis method for the effects of tunnelling on loaded non-displacement piles
Author/s:
  • Franza, Andrea
  • Marshall, Alec M
  • Jimenez, Rafael
Item Type: Presentation at Congress or Conference (Article)
Event Title: XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE)
Event Dates: 17-20 Noviembre 2019
Event Location: Cancun, Mexico
Title of Book: Proceedings of the XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE)
Date: 2019
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción, Infraestructura y Transporte
Creative Commons Licenses: Recognition - Non commercial - Share

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Abstract

In urban areas, the excavation of tunnels beneath pile foundations can be detrimental both for the superstructure and the piles. An analysis method is presented in this paper that models the axial response of non-displacement piles to tunnelling by using a two-stage continuum-based nonlinear elastoplastic approach. This method accounts for the effects of tunnelling-induced ground movements, non-linear soil behaviour, and unloading effects. The approach is used to analyse the relationship between pile head settlement and greenfield ground movements for purely-frictional and floating piles with varying pre-tunnelling safety factor in a uniform ground. Results show that the influence of initial safety factor on the interaction level depth is significant and depends on the distribution of pile shaft capacity. Design charts are given that allow estimation of the tunnelling-induced settlements of non-displacement piles for a linear distribution of greenfield movements along the pile. These charts can also be used for deep-excavations.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020793715TUBEURBUnspecifiedTunnelling beneath piled structures in urban areas

More information

Item ID: 63716
DC Identifier: http://oa.upm.es/63716/
OAI Identifier: oai:oa.upm.es:63716
DOI: 10.3233/STAL190174
Deposited by: Dr Andrea Franza
Deposited on: 10 Sep 2020 08:11
Last Modified: 10 Sep 2020 08:11
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