Ground movements due to deep excavations in Shanghai: Design charts

Malcolm Bolton; Sze-Yue Lam; Paul J Vardanega; Charles Ng; Xianfeng Ma

doi:10.1007/s11709-014-0253-y

Ground movements due to deep excavations in Shanghai: Design charts

Malcolm Bolton, Sze-Yue Lam, Paul J Vardanega, Charles Ng, Xianfeng Ma

Research output: Contribution to journal › Article (Academic Journal) › peer-review

39 Citations (Scopus)

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Abstract

Recent research has clarified the sequence of ground deformation mechanisms that manifest themselves when excavations are made in soft ground. Furthermore, a new framework to describe the deformability of clays in the working stress range has been devised using a large database of previously published soil tests. This paper aims to capitalize on these advances, by analyzing an expanded database of ground movements associated with braced excavations in Shanghai. It is shown that conventional design charts fail to take account either of the characteristics of soil deformability or the relevant deformation mechanisms, and therefore introduce significant scatter. A new method of presentation is found which provides a set of design charts that clarify the influence of soil deformability, wall stiffness, and the geometry of the excavation in relation to the depth of soft ground.

Original language	English
Pages (from-to)	201-236
Number of pages	36
Journal	Frontiers of Structural and Civil Engineering
Volume	8
Issue number	3
Early online date	13 Jun 2014
DOIs	https://doi.org/10.1007/s11709-014-0253-y
Publication status	Published - 2014

Keywords

Shanghai
excavations
mobilizable strength design
dimensionless groups
design charts

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10.1007/s11709-014-0253-y

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39 Citations
1 Conference Paper
1 Comment/debate (Academic Journal)

Discussion of “Characterization of Model Uncertainty for Cantilever Deflections in Undrained Clay” by D. M. Zhang, K. K. Phoon, H. W. Huang, and Q. F. Hu
Vardanega, P. J. & Bolton, M., Jan 2016, In: Journal of Geotechnical and Geoenvironmental Engineering. 142, 1, 2 p., 07015036.
Research output: Contribution to journal › Comment/debate (Academic Journal)

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Predicting and controlling ground movements around deep excavations
Bolton, M., Lam, S. Y. & Vardanega, P. J., May 2010, p. 31-47. 17 p.
Research output: Contribution to conference › Conference Paper

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Cite this

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title = "Ground movements due to deep excavations in Shanghai: Design charts",

abstract = "Recent research has clarified the sequence of ground deformation mechanisms that manifest themselves when excavations are made in soft ground. Furthermore, a new framework to describe the deformability of clays in the working stress range has been devised using a large database of previously published soil tests. This paper aims to capitalize on these advances, by analyzing an expanded database of ground movements associated with braced excavations in Shanghai. It is shown that conventional design charts fail to take account either of the characteristics of soil deformability or the relevant deformation mechanisms, and therefore introduce significant scatter. A new method of presentation is found which provides a set of design charts that clarify the influence of soil deformability, wall stiffness, and the geometry of the excavation in relation to the depth of soft ground.",

keywords = "Shanghai, excavations, mobilizable strength design, dimensionless groups, design charts",

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AU - Ma, Xianfeng

PY - 2014

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AB - Recent research has clarified the sequence of ground deformation mechanisms that manifest themselves when excavations are made in soft ground. Furthermore, a new framework to describe the deformability of clays in the working stress range has been devised using a large database of previously published soil tests. This paper aims to capitalize on these advances, by analyzing an expanded database of ground movements associated with braced excavations in Shanghai. It is shown that conventional design charts fail to take account either of the characteristics of soil deformability or the relevant deformation mechanisms, and therefore introduce significant scatter. A new method of presentation is found which provides a set of design charts that clarify the influence of soil deformability, wall stiffness, and the geometry of the excavation in relation to the depth of soft ground.

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EP - 236

JO - Frontiers of Structural and Civil Engineering

JF - Frontiers of Structural and Civil Engineering

IS - 3

ER -

Ground movements due to deep excavations in Shanghai: Design charts

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Keywords

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Research output

Discussion of “Characterization of Model Uncertainty for Cantilever Deflections in Undrained Clay” by D. M. Zhang, K. K. Phoon, H. W. Huang, and Q. F. Hu

Predicting and controlling ground movements around deep excavations

Cite this