Influence factors analysis of settlement characteristic of CFG pile-net composite foundation during embankment construction

Hong Zhang, Jian Jia Wu, Xian Ming Huang, Li Ping Zhang, Xiao Ming Yang

Research output: Contribution to book or proceedingConference articlepeer-review

Abstract

This paper took a deep soft foundation section in the project of CFG pile-net composite structure treatment of a highway in Jiangxi province as the research object. The influence of design parameters on the settlement of pile-net composite foundation during embankment construction was analyzed by using the finite difference software FLAC3D, including pile length, pile spacing, cushioning layer thickness and geogrid layers. The calculation results are as follows: the influence of pile spacing on settlement of soft foundation is very significant, the settlement of subgrade surface increases by 71.86% with pile spacing varying from 3 d to 8 d; pile length affects obviously the settlement of soft foundation, the settlement of subgrade surface decreases by 38.30% with pile length varying from 15 m to 21 m; the influence degree of cushioning layer thickness and geogrid layers on the settlement of soft foundation is relatively smaller.

Original languageEnglish
Title of host publicationProgress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015
EditorsYun-Hae Kim
PublisherCRC Press/Balkema
Pages219-222
Number of pages4
ISBN (Print)9781138029163
DOIs
StatePublished - 2016
Externally publishedYes
Event4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 - Guangzhou, China
Duration: Jun 20 2015Jun 21 2015

Publication series

NameProgress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015

Conference

Conference4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015
Country/TerritoryChina
CityGuangzhou
Period06/20/1506/21/15

Scopus Subject Areas

  • Safety, Risk, Reliability and Quality
  • Geotechnical Engineering and Engineering Geology

Keywords

  • Embankment construction
  • Expressway
  • Numerical analysis
  • Pile-net composite foundation
  • Settlement

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