›› 2010, Vol. 31 ›› Issue (3): 789-793.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of consolidation settlement calculation for layered soft clay

ZHOU Jian 1, 2，ZHOU Kai-min 1, 2，JIA Min-cai 1, 2，SHI Dan-da3   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. College of Ocean Environment and Engineering, Shanghai Maritime University, Shanghai 200135, China
  • Received:2008-11-19 Online:2010-03-10 Published:2010-03-31

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Abstract:

In engineering practice, the subsoil with vertical drains is often composed of multi-layer strata, and the subsoil is partially penetrated by vertical drain wells. Based on basic hypotheses of Terzaghi’s one-dimensional consolidation theory and Barron’s consolidation theory, a simplified consolidation calculation method for the layered ground with vertical drains is presented. By connecting the pore pressure with deformation, the consolidation degree and the ground settlement with vertical drains can be predicted. In addition, some key problems in the process of the calculation are analyzed, such as the inverse analysis of the consolidation coefficient, the consolidation calculation when the drain wells partially penetrate the subsoil, the selection of thickness of the compressive soils, and so on. The consolidation procedure CONSOL via FORTRAN language is compiled. And it is verified that the method is applicable to engineering practice.

Key words: layered soils, consolidation settlement, back analysis, settlement prediction, surcharge preloading

CLC Number: 

  • TU 433
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