General Analytical Model for Consolidation of Stone Column–Reinforced Ground and Combined Composite Ground

First, this paper develops a new analytical model for the consolidation of stone column-reinforced ground by introducing multiple stone columns into the unit cell for analysis. Governing equations and analytical solutions are obtained for a time-varying surcharge loading, which includes four special loading schemes. The analytical model is then discussed and compared with a conventional analytical model with a single stone column in the unit cell. The results show that the conventional analytical model is a special case of the present model because they predict almost the same average degree of consolidation. This verifies the correctness of the proposed analytical model. Compared with the conventional analytical model, an apparent advantage of this analytical model is that multiple stone columns are introduced into the new unit cell, which makes it possible to extend it to solve the consolidation of a combined composite ground stabilized by impervious piles along with vertical drains with some modifications on the boundary conditions. In this context, analytical model and corresponding analytical solutions are further obtained for the consolidation of the combined composite ground based on the previously mentioned model. The new model is then applied to a field case study at the Huai-Yan Highway in Jiangsu Province, China, in which the embankment was stabilized with impervious piles in combination with prefabricated vertical drains. Good agreement can be observed between the predicted and measured settlement. Finally, a parametrical analysis is performed to investigate the consolidation behavior of the combined composite ground.

• Record URL:
  https://doi.org/10.1061/(ASCE)GM.1943-5622.0000836
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/15323641
• Supplemental Notes:
  • © 2016 American Society of Civil Engineers.
• Authors:
  • Lu, Mengmeng
  • Jing, Hongwen
  • Zhou, Yang
  • Xie, Kanghe
• Publication Date: 2017-6

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04016131
• Serial:
  • International Journal of Geomechanics
  • Volume: 17
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 1532-3641
  • EISSN: 1943-5622
  • Serial URL: http://ascelibrary.org/journal/ijgnai

Subject/Index Terms

• TRT Terms: Columns; Consolidation; Embankments; Ground settlement; Soil stabilization; Stone; Support piles
• Geographic Terms: Jiangsu Province (China)
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 01617020
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Nov 21 2016 1:42PM