Advantages and potential challenges of applying semi-rigid elements in an immersed tunnel: A case study of the Hong Kong-Zhuhai-Macao Bridge

Hu, Zhinan; Xie, Yingchao; Guo-ping, XU; Bin, Shenglin; Hong-zhou, Liu; Lai, Jinxing

doi:10.1016/j.tust.2018.05.004

Cited by 14 publications

(2 citation statements)

References 19 publications

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“…Since then, immersed tunnels have made significant progress in China [7][8][9][10]. Note that immersed tunnels are widely used in cross-sea engineering with the advantages of a short construction period, high waterproof ability, and strong adaptability [11][12][13][14]. Previous studies on tunnel settlement control mainly focus on the shield tunnel.…”

Section: Introductionmentioning

confidence: 99%

Calculation and Analysis of Pipe Joint Settlement Control in Large Back Silting Immersed Tube Tunnel

Yue

2023

Sustainability

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The use of the segmental pipe section immersed tunnel suffers from several problems, such as complex construction, weak foundation, great water depth, great thickness of siltation back on the top of the tube, and difficult settlement control. Based on Winkel’s elastic foundation beam theory, a mechanical calculation model is established according to the case of an inhomogeneous soil layer, and the force and deformation of the structural system of the immersed tube tunnel are calculated based on a bridge in Zhuhai as an example of an immersed tube tunnel. The results show that the derived formula for calculating the allowable differential settlement per unit length of the longitudinally immersed tube is applicable to the sudden change type foundation stiffness deformation model of the natural foundation section of the tube tunnel of the aforementioned bridge in Zhuhai. The relationship between the settlement control index and related influencing factors is analyzed. Hence, a formula for calculating the stratified ground foundation’s integrated bed coefficient is derived, and the equations for tunnel deflection curves and shear forces are solved. A set of calculation methods that are applicable to the foundation settlement control criteria of the segmental immersed tunnel is provided, and the results provide a significant reference for the optimization of the foundation scheme and improvement of the construction process for similar projects.

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Section: Introductionmentioning

confidence: 99%

Calculation and Analysis of Pipe Joint Settlement Control in Large Back Silting Immersed Tube Tunnel

Yue

2023

Sustainability

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“…Results proved helpful in uncovering possible failure mechanisms in underwater immersed tunnels. Taking the immersed tunnel of HZMB (Hong Kong-Zhuhai-Macao Bridge) as an example, Hu put forward a theoretical analysis method of the semirigid element segment based on the body-spring model [36]. However, due to the complex geological environment and substantial engineering and high technical difficulties, research on the HZMB (Hong Kong-Zhuhai-Macao Bridge) immersed tunnel's settlement analysis and control remains elusive; indeed, little research exists regarding various settlement problems.…”

Section: Introductionmentioning

confidence: 99%

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

Yue

Xie

2018

Advances in Materials Science and Engineering

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The deformation characteristics of a weak foundation with high back siltation in an immersed tunnel lack empirical data; however, the calculation method and control of foundation settlements are highly important to tunnel design and construction. This paper takes a cross section of the natural foundation of an immersed tunnel in the Hong Kong-Zhuhai-Macao Bridge (HZMB) as the research object and conducts a centrifuge model test. The soil layer is divided, and the soil parameters are determined by the CPTU and the indoor dynamic three triaxial test. In consideration of the actual engineering scale and the ability of the centrifuge model test system, the similarity ratio of the model to the prototype is studied and determined. As for the immersed tube structure, the deformation characteristics are mainly studied. Therefore, the organic glass is selected as the model material by the similarity of the elastic modulus and the density. The characteristics of the resilience and recompression of the natural foundation of the immersed tunnel and the strain characteristics of the immersed tube structure are obtained by the analysis of the multiworking condition test data. Moreover, based on the actual engineering geological conditions of the subsea tunnel, a numerical calculation method is carried out to check the reliability of the centrifuge model test results. The results of the numerical calculation are consistent with the model test results.

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Settlement Mode Analysis for An Immersed Tube Tunnel Considering A Nonuniform Foundation Under Tidal Load

2022

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Advantages and potential challenges of applying semi-rigid elements in an immersed tunnel: A case study of the Hong Kong-Zhuhai-Macao Bridge

Cited by 14 publications

References 19 publications

Calculation and Analysis of Pipe Joint Settlement Control in Large Back Silting Immersed Tube Tunnel

Calculation and Analysis of Pipe Joint Settlement Control in Large Back Silting Immersed Tube Tunnel

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

Settlement Mode Analysis for An Immersed Tube Tunnel Considering A Nonuniform Foundation Under Tidal Load

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