Title: Numerical simulation on offshore artificial island cofferdam of Hong Kong-Zhuhai-Macao Bridge

Authors: Wang Tingting; Liang Heng; Peng Zhihao

Addresses: CCCC-FHDI Engineering Co., Ltd., Guangzhou, 510230, China ' CCCC-FHDI Engineering Co., Ltd., Guangzhou, 510230, China ' CCCC-FHDI Engineering Co., Ltd., Guangzhou, 510230, China

Abstract: The deep-buried steel cylinder structure has the characteristics of both gravity structure and pile foundation structures. Based on the offshore artificial island of Hong Kong-Zhuhai-Macao Bridge (HZMB), the stability and deformation response of the deep-buried steel cylinder cofferdam was studied throughout the construction process. Stability calculation of the steel cylinder on deep soft foundation was carried out based on the theoretical formula recommended in the technical standards, and the measured values in situ were summarised. The results show that the steel cylinder displacement in 3D simulation model is consistent with the measured data, which is larger than that using theoretical formula. The stability safety derived from the theoretical formula is consistent with the 3D simulation results and measured data. The instability judgment of the buried steel cylinder and the selection criteria of the bottom bearing layer are also given in the paper.

Keywords: Hong Kong-Zhuhai-Macao Bridge; artificial island; deep-buried large cylinder; deep soft foundation; stability.

DOI: 10.1504/IJCAT.2020.107430

International Journal of Computer Applications in Technology, 2020 Vol.62 No.4, pp.285 - 295

Received: 21 Aug 2019
Accepted: 19 Nov 2019
Published online: 28 May 2020 *

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