Comparison of different design methods for soil-nailed structures

Pao Yue-kong Library Electronic Theses Database

Comparison of different design methods for soil-nailed structures

 

Author: Wong, Man-leung Gerald
Title: Comparison of different design methods for soil-nailed structures
Degree: M.Sc.
Year: 2002
Subject: Hong Kong Polytechnic University -- Dissertations
Soil stabilization
Department: Multi-disciplinary Studies
Dept. of Civil and Structural Engineering
Pages: iv, 205, [30] p. : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1616615
URI: http://theses.lib.polyu.edu.hk/handle/200/2343
Abstract: This dissertation has been carried out to study and compare the design method in Hong Kong with two other well-known methods used overseas, namely Davis Method (also known as US Method) and German Method. Original Davis and German Methods have been modified to cater for more complicated slope configuration and to take into account surcharge imposed at the slope crest. Computer programs have been developed for Modified Davis and German Methods respectively. The three different soil nail design methods were compared by conducting different case studies. The design by Hong Kong Method was aided by a commercial program 'Slope/W'. The results of the different design methods were compared by varying slope height, slope gradient, upper slope gradient, surcharge imposed at slope crest and soil shear strength parameters. When comparing Modified Davis Method with Modified German Method, the quantities of required soil nails using Modified German Method were found to be less than that using Modified Davis Method. It has also been found that the determined quantities of required soil nails using both Hong Kong Method and Modified Davis Method were more or less the same in quite a number of cases. However, the determined quantities of required soil nails by Hong Kong Method were in general greater than that by Modified Davis Method. There have been identified no patterns that the critical slip surfaces as determined by a particular method tended to be the most deep-seated. In addition, the shapes and locations of the critical slip surfaces as determined by the three different design methods were considered compatible, no significant differences, in most cases.

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