Prediction of lateral behavior of existing bridge pile foundations due to surcharge load

Ru Song Nie, Wu Ming Leng, Li Min Wei, Yohchia F. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Existing pile foundations supporting high-speed railways - especially those embedded in soft clays - are undoubtedly affected by the nearby embankment construction or excavation activity. The distance between the surcharge load point and an existing bridge pile foundation (d) is an important factor affecting the internal forces and displacements of the foundation system. Three-dimensional finite element models were created to investigate the behavior of a bridge pile foundation supporting a high-speed railway in China under the surcharge load. The analysis results compare well with the field data. The study results indicate that the internal forces and horizontal displacements of piles decrease with the increase of d. When d is less than 4 times of soft clay depth (h), the horizontal displacements of pile groups decrease linearly and rapidly with the increase of d/h ratio. When d is larger than 4h, the horizontal displacements of pile foundations decrease at a lesser degree with the increase of d/h ratio. Suitable d value can be determined based on the maximum allowable displacement of the superstructure under the normal operating condition.

Original languageEnglish (US)
Title of host publicationTunneling and Underground Construction - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages458-469
Number of pages12
Edition242 GSP
ISBN (Print)9780784413449
DOIs
Publication statusPublished - Jan 1 2014
Event2014 GeoShanghai International Congress: Tunneling and Underground Construction - Shanghai, China
Duration: May 26 2014May 28 2014

Publication series

NameGeotechnical Special Publication
Number242 GSP
ISSN (Print)0895-0563

Other

Other2014 GeoShanghai International Congress: Tunneling and Underground Construction
CountryChina
CityShanghai
Period5/26/145/28/14

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All Science Journal Classification (ASJC) codes

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

Cite this

Nie, R. S., Leng, W. M., Wei, L. M., & Chen, Y. F. (2014). Prediction of lateral behavior of existing bridge pile foundations due to surcharge load. In Tunneling and Underground Construction - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress (242 GSP ed., pp. 458-469). (Geotechnical Special Publication; No. 242 GSP). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784413449.045