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Evaluation of Performance of Walls in Deep Excavations Using Wall Deflection Paths

Hwang, R. / Wong, L. W.

Abstract This paper discusses the concept of wall deflection path and reference envelope and illustrates its applications on evaluating the performance of diaphragm walls in deep excavations carried out in thick soft deposits. Numerical analyses were performed for a cut-and-cover section of the Taipei Metro to verify this concept and to quantify the influences of four factors, i.e., the preloading of struts, wall thickness, wall length, and width of excavation on wall deflections. It has been found that the width of excavation is the most influential factor on maximum wall deflections while the thickness and the length of walls have dominating influence on toe stability.

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Evaluation of Performance of Walls in Deep Excavations Using Wall Deflection Paths

Hwang, R. / Wong, L. W.

Abstract This paper discusses the concept of wall deflection path and reference envelope and illustrates its applications on evaluating the performance of diaphragm walls in deep excavations carried out in thick soft deposits. Numerical analyses were performed for a cut-and-cover section of the Taipei Metro to verify this concept and to quantify the influences of four factors, i.e., the preloading of struts, wall thickness, wall length, and width of excavation on wall deflections. It has been found that the width of excavation is the most influential factor on maximum wall deflections while the thickness and the length of walls have dominating influence on toe stability.

Evaluation of Performance of Walls in Deep Excavations Using Wall Deflection Paths

Hwang, R. / Wong, L. W.

Abstract This paper discusses the concept of wall deflection path and reference envelope and illustrates its applications on evaluating the performance of diaphragm walls in deep excavations carried out in thick soft deposits. Numerical analyses were performed for a cut-and-cover section of the Taipei Metro to verify this concept and to quantify the influences of four factors, i.e., the preloading of struts, wall thickness, wall length, and width of excavation on wall deflections. It has been found that the width of excavation is the most influential factor on maximum wall deflections while the thickness and the length of walls have dominating influence on toe stability.

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Title:

Evaluation of Performance of Walls in Deep Excavations Using Wall Deflection Paths

Contributors:

Hwang, R. (author) / Wong, L. W. (author)

Published in:

Proceedings of the 2nd International Symposium on Asia Urban GeoEngineering ; 204-222

Springer Series in Geomechanics and Geoengineering

Publication date:

2018-01-01

Size:

19 pages

ISBN:

978-981-10-6632-0 , 978-981-10-6631-3

ISSN:

1866-8755 , 1866-8763

DOI:

https://doi.org/10.1007/978-981-10-6632-0_16

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Taipei Metro , Underground construction , Deep excavation , Wall deflection path , Reference envelope Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Structural Mechanics

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