Modeling the Time-Dependent Behavior of Geosyntheticaly Reinforced Soil Structures with Cohesive Backfill
The popularity of soil structures reinforced with mechanical inclusions, and the important issues of service life and durability have been brought to light in this chapter. Unlike other civil structure, the load-bearing elements of reinforced soil structure are hard to inspect and essentially impossible to maintain. In addition, they are buried in soil, a complex environment with physical and chemical characteristics that may vary greatly from site to site. When geosynthetics such as geotextiles and geogrids are used as the reinforcement, the long-term performance becomes an even more important issue. This is because geosynthetics are generally manufactured from polymer materials that exhibit a load, load rate, and temperature-dependent elastic viscoplastic behavior. For geosynthetically reinforced soil structures with a long design life, (e.g., 70-120 years), long term performance is critical. In the design of structures, stability and serviceability considerations require that the reinforcement (1) not attain its ultimate state of collapse; i.e., tensile rupture (a strength criterion), and (2) not develop excessive strain over its design life (a strain criterion). For example, in the case of polyester geogrids, long-term design strength is usually governed by tensile rupture; for polyethylene, the long-term design strength may be governed by either strain or rupture. This paper presents a critical review of the state of the art in time-dependent modeling and analysis of geosynthetically reinforced soil structures with cohesive backfill and it assumed that the analysis will be carried out numerically using the finite-element method.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0824742540
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Corporate Authors:
Marcel Dekker, Incorporated
270 Madison Avenue
New York, NY United States 10016 -
Authors:
- Kaliakin, V N
- Dechasakulsom, M
- Publication Date: 2003
Language
- English
Media Info
- Media Type: Print
- Features: References;
- Pagination: pp 69-83
- Monograph Title: Reinforced Soil Engineering. Advances in Research and Practice
Subject/Index Terms
- TRT Terms: Backfill soils; Backfilling; Bearing capacity; Cohesive soils; Durability; Geotechnical engineering; Service life; Soil structure; Time dependence; Trench backfill
- Uncontrolled Terms: Reinforced soils; Soil structures
- Subject Areas: Design; Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 01041737
- Record Type: Publication
- ISBN: 0824742540
- Files: TRIS
- Created Date: Jan 30 2007 1:32PM