Analysis and rehabilitation of a failed submarine slope cut in soft clay

Shuwang Yan; Cui Wang; Jian Chu

doi:10.1061/40971(310)60

Analysis and rehabilitation of a failed submarine slope cut in soft clay

Shuwang Yan^*, Cui Wang, Jian Chu

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a case study of a slope failure and its rehabilitation works. A submarine slope cut in soft soil failed during construction in Tianjin Harbor, China. A post-failure analysis was carried out using in-situ testing and back analysis to identify the causes of the failure and assess the changes in soil properties and geological conditions at the site. Based on the investigation, the factors that might have caused the slope failure are identified. These include: excessive excavation, violation of construction procedure, generation of excessive pore water pressure by earlier piling work nearby, and sudden water-level fluctuation in front of the slope. Methods that could be used to rehabilitate the failed slope are discussed. The slope was repaired by reinforcing the slope using sand compaction piles and dividing the excavation into four steps. Copyright ASCE 2008.

Original language	English
Title of host publication	Proceedings of session of GeoCongress 2008 - GeoCongress 2008
Subtitle of host publication	Geosustainability and Geohazard Mitigation, GSP 178
Pages	483-490
Number of pages	8
Edition	178
DOIs	https://doi.org/10.1061/40971(310)60
Publication status	Published - 2008
Externally published	Yes
Event	GeoCongress 2008: Geosustainability and Geohazard Mitigation - New Orleans, LA, United States Duration: Mar 9 2008 → Mar 12 2008

Publication series

Name	Geotechnical Special Publication
Number	178
ISSN (Print)	0895-0563

Conference

Conference	GeoCongress 2008: Geosustainability and Geohazard Mitigation
Country/Territory	United States
City	New Orleans, LA
Period	3/9/08 → 3/12/08

ASJC Scopus Subject Areas

Civil and Structural Engineering
Architecture
Building and Construction
Geotechnical Engineering and Engineering Geology

Access to Document

10.1061/40971(310)60

Cite this

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title = "Analysis and rehabilitation of a failed submarine slope cut in soft clay",

abstract = "This paper presents a case study of a slope failure and its rehabilitation works. A submarine slope cut in soft soil failed during construction in Tianjin Harbor, China. A post-failure analysis was carried out using in-situ testing and back analysis to identify the causes of the failure and assess the changes in soil properties and geological conditions at the site. Based on the investigation, the factors that might have caused the slope failure are identified. These include: excessive excavation, violation of construction procedure, generation of excessive pore water pressure by earlier piling work nearby, and sudden water-level fluctuation in front of the slope. Methods that could be used to rehabilitate the failed slope are discussed. The slope was repaired by reinforcing the slope using sand compaction piles and dividing the excavation into four steps. Copyright ASCE 2008.",

author = "Shuwang Yan and Cui Wang and Jian Chu",

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booktitle = "Proceedings of session of GeoCongress 2008 - GeoCongress 2008",

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note = "GeoCongress 2008: Geosustainability and Geohazard Mitigation ; Conference date: 09-03-2008 Through 12-03-2008",

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Yan, S, Wang, C & Chu, J 2008, Analysis and rehabilitation of a failed submarine slope cut in soft clay. in Proceedings of session of GeoCongress 2008 - GeoCongress 2008: Geosustainability and Geohazard Mitigation, GSP 178. 178 edn, Geotechnical Special Publication, no. 178, pp. 483-490, GeoCongress 2008: Geosustainability and Geohazard Mitigation, New Orleans, LA, United States, 3/9/08. https://doi.org/10.1061/40971(310)60

Analysis and rehabilitation of a failed submarine slope cut in soft clay. / Yan, Shuwang; Wang, Cui; Chu, Jian.
Proceedings of session of GeoCongress 2008 - GeoCongress 2008: Geosustainability and Geohazard Mitigation, GSP 178. 178. ed. 2008. p. 483-490 (Geotechnical Special Publication; No. 178).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Analysis and rehabilitation of a failed submarine slope cut in soft clay

AU - Yan, Shuwang

AU - Wang, Cui

AU - Chu, Jian

PY - 2008

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N2 - This paper presents a case study of a slope failure and its rehabilitation works. A submarine slope cut in soft soil failed during construction in Tianjin Harbor, China. A post-failure analysis was carried out using in-situ testing and back analysis to identify the causes of the failure and assess the changes in soil properties and geological conditions at the site. Based on the investigation, the factors that might have caused the slope failure are identified. These include: excessive excavation, violation of construction procedure, generation of excessive pore water pressure by earlier piling work nearby, and sudden water-level fluctuation in front of the slope. Methods that could be used to rehabilitate the failed slope are discussed. The slope was repaired by reinforcing the slope using sand compaction piles and dividing the excavation into four steps. Copyright ASCE 2008.

AB - This paper presents a case study of a slope failure and its rehabilitation works. A submarine slope cut in soft soil failed during construction in Tianjin Harbor, China. A post-failure analysis was carried out using in-situ testing and back analysis to identify the causes of the failure and assess the changes in soil properties and geological conditions at the site. Based on the investigation, the factors that might have caused the slope failure are identified. These include: excessive excavation, violation of construction procedure, generation of excessive pore water pressure by earlier piling work nearby, and sudden water-level fluctuation in front of the slope. Methods that could be used to rehabilitate the failed slope are discussed. The slope was repaired by reinforcing the slope using sand compaction piles and dividing the excavation into four steps. Copyright ASCE 2008.

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Analysis and rehabilitation of a failed submarine slope cut in soft clay

Abstract

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ASJC Scopus Subject Areas

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