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MODERN TUNNELLING TECHNOLOGY 2021, Vol. 58 Issue (2) :204-207    DOI:
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Deformation Control Method for Cross-steel Joints of the Diaphragm Wall in Super Deep Foundation Pits
(1 Central South University, Changsha, 410083; 2 China Railway Group Limited, Beijing, 100039; 3 China Tiesiju Civil Engineering Group Co. Ltd., Hefei, 230023)
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Abstract Taking the construction of diaphragm walls in the super deep foundation pit group at East Railway Sta? tion of Hangzhou Metro Line 6 Phase II as the example, this paper summarizes and analyzes the types and causes of the deformation of the cross-steel joints of the diaphragm wall, and introduces the comprehensive deformation control method composed of adding diagonal bars to the steel plate joints, welded reinforcing the longitudinal steel plate joints and optimizing the backfill materials outside the steel plate joint. The effectiveness of the method is verified by the field practice, providing important reference value for the design and construction of steel reinforcement cages of similar diaphragm walls in the super deep foundation pits in China.
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WU Jun1
2 DENG Xifei3
Keywords： Super deep diaphragm wall   Cross-steel joint   Deformation types   Control method     
Abstract： Taking the construction of diaphragm walls in the super deep foundation pit group at East Railway Sta? tion of Hangzhou Metro Line 6 Phase II as the example, this paper summarizes and analyzes the types and causes of the deformation of the cross-steel joints of the diaphragm wall, and introduces the comprehensive deformation control method composed of adding diagonal bars to the steel plate joints, welded reinforcing the longitudinal steel plate joints and optimizing the backfill materials outside the steel plate joint. The effectiveness of the method is verified by the field practice, providing important reference value for the design and construction of steel reinforcement cages of similar diaphragm walls in the super deep foundation pits in China.
Keywords： Super deep diaphragm wall,   Cross-steel joint,   Deformation types,   Control method     
Cite this article:   
WU Jun1, 2 DENG Xifei3 .Deformation Control Method for Cross-steel Joints of the Diaphragm Wall in Super Deep Foundation Pits[J]  MODERN TUNNELLING TECHNOLOGY, 2021,V58(2): 204-207
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2021/V58/I2/204
　
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