Large-Scale Reinforced Clay Walls Backfilled with Clay at Cheng Kung University

This chapter describes a study that was conducted regarding the behavior of geosynthetic reinforced walls using clayey soil as the backfill was performed. Two 2.77-m high full scale walls were constructed at the National Cheng Kung University (called the NCKU walls) using an alluvial clay that contained 98% of fine particles under carefully controlled conditions. Results of the long-term monitoring on the behavior of NCKU walls indicated that cracks or shear planes in the backfill may play important roles in the increase of pore water pressure and the deformation of the wall face during rainfall. In addition to the NCKU walls, a test embankment was also constructed to investigate the infiltration characteristics of compacted clay under practical compaction procedure. Dismantling of the NCKU walls and the test embankment was conducted in order to investigate the locations of cracks and the water content distribution in the soil. Results of finite element method (FEM) seepage analysis showed that in-plane drainage function of nonwoven geotextile layers may not always be positive in the stability of clay walls. Using an impermeable facing—a rigid concrete panel as used in the RRR method and a geodrain layer close to the top of the wall—is suggested for reinforcing clay walls.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0824742540
• Corporate Authors:

  Marcel Dekker, Incorporated

  270 Madison Avenue
  New York, NY  United States  10016
• Authors:
  • Huang, Ching-Chuan
  • Wu, J F
  • Huang, B N
  • Leu, A L
  • Jean, G Y
  • Shan, H Y
• Publication Date: 2003

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 187-219
• Monograph Title: Reinforced Soil Engineering. Advances in Research and Practice

Subject/Index Terms

• TRT Terms: Backfill soils; Clay; Clay soils; Embankments; Finite element method; Monitoring; Pore water pressures; Rainfall; Retaining walls; Trench backfill
• Uncontrolled Terms: Fine particles; Reinforced soils
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;

Filing Info

• Accession Number: 01041643
• Record Type: Publication
• ISBN: 0824742540
• Files: TRIS
• Created Date: Jan 30 2007 1:32PM