Numerical Study of High Speed Railway Subgrade Settlement Induced by Underwater Lowering

Renpeng Chen, Wei Cheng, Ruiyu Jia, Shuai Qi, Hanlin Wang

Research output: Journal article publicationConference articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Groundwater lowering has brought a great impact on high speed railway. It has developed a measurable regional settlement of subgrade and also made a negative impact on piles under subgrade. In this paper, two structure types, namely P-R structure and P-N structure under subgrade have been considered at different groundwater lowering rates. Plaxis 3D is employed to assess subgrade center point's settlement, piles' negative skin friction, increment of skin friction in piles and piles' axial force. From the results, we can figure that groundwater lowering indeed has a negative impact on subgrade and the maximum negative skin friction of piles can increases up to 30-40 kN/m. The axial force in piles can be twice as initial conditions.

Original languageEnglish
Pages (from-to)1350-1357
Number of pages8
JournalProcedia Engineering
Volume143
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event3rd International Conference on Transportation Geotechnics, ICTG 2016 - Guimaraes, Portugal
Duration: 4 Sep 20167 Sep 2016

Keywords

  • groundwater lowering
  • pile-net structure
  • pile-plate structure
  • skin friction

ASJC Scopus subject areas

  • Engineering(all)

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