Appropriate Wrapping Width of Expansive Soil Embankment Built by Enveloping Method

In 2 sections of expansive soil trial embankments of Guangxi Ningming area, 4 monitoring profiles were set and series of testing elements were buried for field monitoring to determine the appropriate wrapping width. The statistical analysis of the monitoring data of water content, horizontal displacement changed with drying-wetting cycle of seasons in several monitored slopes was carried out. The results show that, when the horizontal distance to the slope surface in trial embankments is larger than 3 meters, the variation of soil water content and horizontal displacement are small, the wrapping depth of trial embankments is suitable; the obtained optimum seasons for expansive soil embankment construction in Guangxi are from January to April, and the prominent effect depth of expansive soil in the condition of wetting-drying cycle is 1.49m; furthermore, the appropriate wrapping width of expansive soil embankment built by the enveloping and wrapping technique in Nan-you Expressway is determined to be 3m. On the basis of the research, the method of determining the appropriate wrapping width of expansive soil embankment built by the enveloping and wrapping method was put forward.

Availability:
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Authors:
- Yang, Heping
- Zhang, Gaofeng
Publication Date: 2009-6

Language

English

Media Info

Media Type: Print
Features: Figures; References; Tables;
Pagination: pp 12-17
Serial:
- Journal of Highway and Transportation Research and Development
- Volume: 4
- Issue Number: 1
- Publisher: Research Institute of Highway, Ministry of Transport
- ISSN: 1002-0268

Subject/Index Terms

TRT Terms: Embankments; Geotechnical engineering; Highway engineering; Swelling soils
Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

Accession Number: 01148056
Record Type: Publication
Files: TRIS
Created Date: Jan 25 2010 8:07AM