Influence of bending of plastic vertical drain on consolidation via vacuum preloading

Binbin Xu, Shotaro Yamada, Toshihiro Noda

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

1 Citation (Scopus)

Abstract

The soft ground improvement employing vacuum preloading is widely used in Tianjin. In the application of vacuum preloading, the bending of plastic vertical drains (PVDs) often occurs accompanying the large settlement of the soft ground or the significant shear strain at the ground surface. In order to investigate the influence of bending of PVDs on the ground consolidation, three different bending shapes of PVDs are assumed and a series soil-water coupled finite element analyses are carried out. It is found that: 1) the macro-element method is available to take the bending effect of PVDs into consideration; 2) the bending at the bottom of PVDs has much impact on the consolidation of ground even though the hydraulic gradient at the bottom is much smaller than that at the top; 3) Due to the bending of PVDs at the bottom the drainage capacity is much influenced and the volumetric compression only occurs at the first few layers of the ground.

Original languageEnglish
Title of host publicationMachine Tool Technology, Mechatronics and Information Engineering
EditorsZhongmin Wang, Liangyu Guo, Jianming Tan, Dongfang Yang, Dongfang Yang, Kun Yang, Dongfang Yang, Dongfang Yang, Dongfang Yang
PublisherTrans Tech Publications Ltd
Pages4826-4830
Number of pages5
ISBN (Electronic)9783038352464
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes
EventInternational Conference on Machine Tool Technology and Mechatronics Engineering, ICMTTME 2014 - Guilin, China
Duration: 2014 Jun 222014 Jun 23

Publication series

NameApplied Mechanics and Materials
Volume644-650
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

ConferenceInternational Conference on Machine Tool Technology and Mechatronics Engineering, ICMTTME 2014
CountryChina
CityGuilin
Period14/6/2214/6/23

Keywords

  • Bended PVDs
  • FEM
  • Macro-element method
  • Soil-water coupled
  • Vacuum preloading

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Xu, B., Yamada, S., & Noda, T. (2014). Influence of bending of plastic vertical drain on consolidation via vacuum preloading. In Z. Wang, L. Guo, J. Tan, D. Yang, D. Yang, K. Yang, D. Yang, D. Yang, & D. Yang (Eds.), Machine Tool Technology, Mechatronics and Information Engineering (pp. 4826-4830). (Applied Mechanics and Materials; Vol. 644-650). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMM.644-650.4826