Development and applications of diaphragm walling with special section steel—NS-Box

Diaphragm walls are used throughout the world to construct deep underground structures, conventionally in reinforced concrete (RC). The NS-Box diaphragm wall is a composite steel section and concrete technique, first developed in Japan in 1992 to meet the demand for strong, stiff walls of reduced th...

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Bibliographic Details
Published inTunnelling and underground space technology Vol. 18; no. 2; pp. 283 - 289
Main Authors Sakai, K, Tazaki, K
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2003
Subjects
Braced excavation
Diaphragm wall
Section steel
Section steel
Diaphragm wall
Braced excavation
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Summary:Diaphragm walls are used throughout the world to construct deep underground structures, conventionally in reinforced concrete (RC). The NS-Box diaphragm wall is a composite steel section and concrete technique, first developed in Japan in 1992 to meet the demand for strong, stiff walls of reduced thickness, to save space on congested sites and to achieve manpower savings by maximizing prefabrication. This paper gives guidance on how to design and construct the NS-Box walling, and comparisons of different aspects of the performance between the NS-Box and conventional RC diaphragm walls. Details of how the method was successfully employed during the construction of some projects are given.
ISSN:0886-7798
1878-4364
DOI:10.1016/S0886-7798(03)00037-3