Uplift behavior of nodular diaphragm wall: Experiment and theory

The nodular diaphragm wall (NDW) is a novel foundation that can provide significant uplift load resistance compared to a typical diaphragm wall foundation. With the advantages of low noise, cost‐effectiveness, high work efficiency, and construction abilities close to existing buildings, NDW has exce...

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Bibliographic Details
Published in:International journal for numerical and analytical methods in geomechanics 2024-04, Vol.48 (5), p.1197-1226
Main Authors: Wu, Jiujiang, Zhang, Yi, Li, Yan, Wen, Hua, Wang, Lijuan
Format: Article
Language:English
Subjects:
Construction
Deformation
Diaphragm wall
Engineering
Failure modes
Iterative methods
Layered soils
Load
Load resistance
Load transfer
load transfer approach
Low noise
model test
Multilayers
nodular diaphragm wall
Particle image velocimetry
PIV
Theoretical analysis
Transfer functions
Uplift
uplift bearing behavior
Uplift resistance
Urbanization
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Summary:The nodular diaphragm wall (NDW) is a novel foundation that can provide significant uplift load resistance compared to a typical diaphragm wall foundation. With the advantages of low noise, cost‐effectiveness, high work efficiency, and construction abilities close to existing buildings, NDW has excellent engineering application prospects in urbanization construction. However, the scarce knowledge on the uplift resistance, failure mode, and calculation method of the NDW has hindered its application in practice. In this paper, indoor model tests based on particle image velocimetry (PIV) technology are carried out to investigate the uplift behavior of three NDW models with different amounts and locations of nodular parts. The load transfer mechanisms of the three NDW models are discussed in detail, and special attention is given to the failure mode analysis. In addition, a theoretical analysis is implemented based on the load transfer approach. The transfer function and associated critical parameters are discussed in detail. Accordingly, an iterative procedure is proposed to interpret the load transfer information of an uplift NDW in multilayered soils under different loading levels. The findings derived in this paper are helpful to the uplift deformation, capacity calculation, and design of NDW in practical engineering.
ISSN:0363-9061
1096-9853
DOI:10.1002/nag.3682