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Article: Design and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnels

TitleDesign and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnels
Authors
KeywordsCase studies
Construction
Deep excavation
Design
Ground improvement
Metro tunnels
Saturated soft soil
Issue Date2003
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2003, v. 40 n. 5, p. 933-948 How to Cite?
AbstractThis paper presents the design and construction of a deep excavation for building foundations in saturated soil. This deep excavation was of particular interest because it was located above and beside the Shanghai Metro tunnels. The twin Shanghai Metro tunnels had to be in full operation during the deep excavation. Potential large deformation of the twin tunnels was one of the main concerns during the design and construction for the deep excavation. The paper discusses in detail the criteria and measures for controlling the soil and tunnel deformation. The measures included cast-in-place concrete diaphragm walls with bracing structural members, pumping consolidation, cement-soil mix pile systems, and rational excavation procedures. A simplified theoretical method was proposed to estimate the increment in undrained shear strength in a soft clay layer due to pumping consolidation. Furthermore, conventional finite element methods were used to predict the soil vertical and horizontal displacements induced by the excavation. Using the design and construction methods discussed in the paper, the settlement and horizontal displacement of the tunnels were successfully controlled within 5.0 mm and 9.0 mm, respectively. The curvature of longitudinal deformation curve of the tunnels was less than 1/15 000. The horizontal displacement of the braced diaphragm walls was less than 0.12% of the total excavation depth.
Persistent Identifierhttp://hdl.handle.net/10722/42369
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHu, ZFen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorZhou, Jen_HK
dc.contributor.authorTham, LGen_HK
dc.date.accessioned2007-01-29T08:47:58Z-
dc.date.available2007-01-29T08:47:58Z-
dc.date.issued2003en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2003, v. 40 n. 5, p. 933-948en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42369-
dc.description.abstractThis paper presents the design and construction of a deep excavation for building foundations in saturated soil. This deep excavation was of particular interest because it was located above and beside the Shanghai Metro tunnels. The twin Shanghai Metro tunnels had to be in full operation during the deep excavation. Potential large deformation of the twin tunnels was one of the main concerns during the design and construction for the deep excavation. The paper discusses in detail the criteria and measures for controlling the soil and tunnel deformation. The measures included cast-in-place concrete diaphragm walls with bracing structural members, pumping consolidation, cement-soil mix pile systems, and rational excavation procedures. A simplified theoretical method was proposed to estimate the increment in undrained shear strength in a soft clay layer due to pumping consolidation. Furthermore, conventional finite element methods were used to predict the soil vertical and horizontal displacements induced by the excavation. Using the design and construction methods discussed in the paper, the settlement and horizontal displacement of the tunnels were successfully controlled within 5.0 mm and 9.0 mm, respectively. The curvature of longitudinal deformation curve of the tunnels was less than 1/15 000. The horizontal displacement of the braced diaphragm walls was less than 0.12% of the total excavation depth.en_HK
dc.format.extent410708 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgjen_HK
dc.relation.ispartofCanadian Geotechnical Journalen_HK
dc.rightsCanadian Geotechnical Journal. Copyright © N R C Research Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCase studiesen_HK
dc.subjectConstructionen_HK
dc.subjectDeep excavationen_HK
dc.subjectDesignen_HK
dc.subjectGround improvementen_HK
dc.subjectMetro tunnelsen_HK
dc.subjectSaturated soft soilen_HK
dc.titleDesign and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnelsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-3674&volume=40&issue=5&spage=933&epage=948&date=2003&atitle=Design+and+construction+of+a+deep+excavation+in+soft+soils+adjacent+to+the+Shanghai+Metro+tunnelsen_HK
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/t03-041en_HK
dc.identifier.scopuseid_2-s2.0-0346056717en_HK
dc.identifier.hkuros85645-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0346056717&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue5en_HK
dc.identifier.spage933en_HK
dc.identifier.epage948en_HK
dc.identifier.isiWOS:000185902200006-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridHu, ZF=8253972600en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridZhou, J=16426294300en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK

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