›› 2009, Vol. 30 ›› Issue (6): 1764-1768.

• Geotechnical Engineering • Previous Articles     Next Articles

Mechanism of composite ground with stone columns and geogrid in wetland

CUI Wei1，ZHANG Zhi-geng 1, 2，YAN Shu-wang1   

  1. 1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Inner Mongolia High-grade Highway Construction and Development Co., Ltd., Hohhot 010010, China
  • Received:2007-11-15 Online:2009-06-10 Published:2011-03-09

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2016

Abstract:

The outstanding feature of soft ground in plateau wetland consists in peat bed of which engineering geologic condition is very weak. Based on the main features of soft ground in plateau wetland, using stone column and geogrid to treat the soft ground is an innovation. Based on FEM, the deformation characteristics and the mechanism of composite ground with stone columns and geogrid in plateau wetland are given. The results indicate that the stone column can expedite the process of drainage consolidation and enhance the bearing capacity of ground. The main effects of the geogrid are to restrict the lateral displacements and to dwindle differential settlements of the embankment.

Key words: plateau wetland, soft foundation treatment, stone column, geogrid, mechanism

CLC Number: 

  • TU 473
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