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Article: Significant cost implications in using Janbu's simplified or Morgenstern-Price slice methods for soil nail design of cut slopes

TitleSignificant cost implications in using Janbu's simplified or Morgenstern-Price slice methods for soil nail design of cut slopes
Authors
KeywordsConstruction Cost Reduction
Cut Slopes
Janbu's Simplified Method
Landslip Preventive Measures
Morgenstern-Price Method
Soil Nail Design
Issue Date2004
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2004, v. 11 n. 1, p. 54-63 How to Cite?
AbstractSince 1985, soil nailing has been a method of choice for slope stabilisation in the landslip preventive measures project in Hong Kong. Different slice methods have been used in the design of soil nails for stabilising substandard cut slopes, with Janbu's simplified and Morgenstern-Price methods being the most popular ones in Hong Kong. This paper investigates the effects of the two different slice methods on the soil nail design. A number of actual cut slopes involving soil nail design are studied in the paper. For each case, the two different slice methods are used to calculate the factors of safety before and after the stabilisation works. Soil nails are designed according to the current design practice. The corresponding costs of the proposed soil nailing works are then estimated. The two slice methods are compared on the basis of both slope safety and construction cost. It is found that the construction cost of soil nailing stabilisation works adopting Janbu's simplified method could be 10% to 90% higher than that adopting the Morgenstern-Price method under the same safety standards. Technical reasons for such substantial differences are also given in the paper. It is believed that the findings presented in the paper could be used to reduce soil nail construction costs without sacrifice of the current slope safety standards.
Persistent Identifierhttp://hdl.handle.net/10722/70896
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorWan, SPen_HK
dc.contributor.authorYue, ZQen_HK
dc.date.accessioned2010-09-06T06:27:05Z-
dc.date.available2010-09-06T06:27:05Z-
dc.date.issued2004en_HK
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2004, v. 11 n. 1, p. 54-63en_HK
dc.identifier.issn1023-697Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/70896-
dc.description.abstractSince 1985, soil nailing has been a method of choice for slope stabilisation in the landslip preventive measures project in Hong Kong. Different slice methods have been used in the design of soil nails for stabilising substandard cut slopes, with Janbu's simplified and Morgenstern-Price methods being the most popular ones in Hong Kong. This paper investigates the effects of the two different slice methods on the soil nail design. A number of actual cut slopes involving soil nail design are studied in the paper. For each case, the two different slice methods are used to calculate the factors of safety before and after the stabilisation works. Soil nails are designed according to the current design practice. The corresponding costs of the proposed soil nailing works are then estimated. The two slice methods are compared on the basis of both slope safety and construction cost. It is found that the construction cost of soil nailing stabilisation works adopting Janbu's simplified method could be 10% to 90% higher than that adopting the Morgenstern-Price method under the same safety standards. Technical reasons for such substantial differences are also given in the paper. It is believed that the findings presented in the paper could be used to reduce soil nail construction costs without sacrifice of the current slope safety standards.en_HK
dc.languageengen_HK
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_HK
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_HK
dc.subjectConstruction Cost Reductionen_HK
dc.subjectCut Slopesen_HK
dc.subjectJanbu's Simplified Methoden_HK
dc.subjectLandslip Preventive Measuresen_HK
dc.subjectMorgenstern-Price Methoden_HK
dc.subjectSoil Nail Designen_HK
dc.titleSignificant cost implications in using Janbu's simplified or Morgenstern-Price slice methods for soil nail design of cut slopesen_HK
dc.typeArticleen_HK
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-2342633244en_HK
dc.identifier.hkuros85672en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2342633244&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume11en_HK
dc.identifier.issue1en_HK
dc.identifier.spage54en_HK
dc.identifier.epage63en_HK
dc.publisher.placeHong Kongen_HK
dc.identifier.scopusauthoridWan, SP=7202726097en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK

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