Multi-objective foundation optimization and its application to pile reuse

Yat Fai Leung, K. Soga, A. Klar

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Pile reuse has become an increasingly popular option in foundation design, mainly due to its potential cost and environmental benefits and the problem of underground congestion in urban areas. However, key geotechnical concerns remain regarding the behavior of reused piles and the modeling of foundation systems involving old and new piles to support building loads of the new structure. In this paper, a design and analysis tool for pile reuse projects will be introduced. The tool allows coupling of superstructure stiffness with the foundation model, and includes an optimization algorithm to obtain the best configuration of new piles to work alongside reused piles. Under the concept of Pareto Optimality, multi-objective optimization analyses can also reveal the relationship between material usage and the corresponding foundation performance, providing a series of reuse options at various foundation costs. The components of this analysis tool will be discussed and illustrated through a case history in London, where 110 existing piles are reused at a site to support the proposed new development. The case history reveals the difficulties faced by foundation reuse in urban areas and demonstrates the application of the design tool to tackle these challenges.
Original languageEnglish
Title of host publicationGeo-Frontiers 2011
Subtitle of host publicationAdvances in Geotechnical Engineering - Proceedings of the Geo-Frontiers 2011 Conference
Pages75-84
Number of pages10
Edition211 GSP
DOIs
Publication statusPublished - 27 May 2011
Externally publishedYes
EventGeo-Frontiers 2011: Advances in Geotechnical Engineering - Dallas, TX, United States
Duration: 13 Mar 201116 Mar 2011

Conference

ConferenceGeo-Frontiers 2011: Advances in Geotechnical Engineering
CountryUnited States
CityDallas, TX
Period13/03/1116/03/11

Keywords

  • Optimization
  • Pile foundations
  • Urban areas

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this