Prediction of Ground Deformation Due to Shield Excavation in Clayey Soils

In recent years, because of the development of the technology in shield tunneling, deformation due to shield tunneling is mainly contributed by these occurring while a shield is passing and by subsequent deformations. Though a few methods have been proposed to predict the deformation in numerical, s...

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Bibliographic Details
Published inSOILS AND FOUNDATIONS Vol. 39; no. 3; pp. 53 - 61
Main Authors Hashimoto, Tadashi, Nagaya, Junichi, Konda, Takahiro
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.1999
The Japanese Geotechnical Society
Subjects
clayey soil
finite element method
ground deformation
measurement data
prediction
shield tunnel
ground deformation
measurement data
prediction
finite element method
clayey soil
shield tunnel
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Summary:In recent years, because of the development of the technology in shield tunneling, deformation due to shield tunneling is mainly contributed by these occurring while a shield is passing and by subsequent deformations. Though a few methods have been proposed to predict the deformation in numerical, statistic and empirical ways, it is hard to say these methods can be used with confidence. Based on the accumulated measurement data of shield tunneling, it is known that the ground deformation when a shield is passing is mainly caused by the stress release at the cutting face and the tail. It is also known that the subsequent deformation is dependent on the maximum deformation that occurred during the shield passing and the liquidity index IL which is related to the sensitivity. The total deformation due to shield tunneling is divided into the two parts mentioned above. These are evaluated with the proposed prediction method in practical ways respectively based on accumulated measurement data.
ISSN:0038-0806
1341-7452
DOI:10.3208/sandf.39.3_53