Model test of immersed tube tunnel foundation treated by sand-flow method

Li, Wei; Fang, Yingguang; Mo, Hongqiang; Gu, Renguo; Chen, Junsheng; Wang, Yizhao; Dong, Feng

doi:10.1016/j.tust.2013.09.015

Cited by 27 publications

(3 citation statements)

References 7 publications

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“…IMTs have traditionally a foundation of a gravel or a sandflow foundation, both have their advantages and disadvantages, but differences between both methods were already described in 1978 by van Tongeren (1978) and scale model tests on sand-flow were performed and researched by Li et al (2014). The sand-jetting or sand-flow, was applied, for example on the Maastunnel in 1942 (Gravesen and Rasmussen, 1993) and is highlighted by Glerum (1995).…”

Section: Literature Overviewmentioning

confidence: 99%

The Influence of Spatial Variation on the Design of Foundations of Immersed Tunnels: Advanced Probabilistic Analysis

't Hart,

Morales-Napoles,

Jonkman

2023

Preprint

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Section: Literature Overviewmentioning

confidence: 99%

The Influence of Spatial Variation on the Design of Foundations of Immersed Tunnels: Advanced Probabilistic Analysis

't Hart,

Morales-Napoles,

Jonkman

2023

Preprint

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“…e results showed that the sand compaction pile (SCP) method had obvious settlement reduction effect on the marine clay. Foundation treatment of large sections of an immersed tunnel was optimized by Li et al [28,29] with positive effects. Ding et al [30][31][32] exploited the three-dimensional numerical simulation methods to analyze the response law of the immersed tunnel under earthquake and analyzed in detail the weak links such as pipe joint of the immersed tunnel.…”

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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“…Many research studies of immersed tunnel elements have been carried out in the past, and the majority of existing studies focus on the seismic response, underwater interfacing, structure anti-seismic and foundation treatment (Anastasopoulos et al 2007;Grantz et al 2001;Do et al 2015;Li et al 2014). Considerably less study has been directed at installation procedures and the hydrodynamic characteristics of the immersed tunnel element and its deployment barge still need to be investigated further.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic response of a submerged tunnel element suspended from a twin-barge under random waves

et al. 2017

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It is possible that the excessive dynamic responses of tunnel elements could jeopardize the safety and accuracy of installation procedures used during subsea tunnel construction. To investigate the motion characteristics of the tunnel element, experimental measurements of a moored tunnel element suspended from a twin-barge were conducted in a wave flume at a geometric scale of 1:50. A corresponding numerical model was developed to simulate the dynamic response of the tunnel-barge system in realistic sea conditions, using hydrodynamic parameters from a radiation/diffraction potential model. Multiple linear wave conditions and three immersion depths were tested. The results indicate that the motion response of the tunnel element increases with decreasing immersion depth, and the natural periods of the tunnel, barge and combined tunnel-barge system play key roles in the influence of wave conditions on the motions of the tunnel. It was found that the low-frequency motion of the tunnel element is large in small wave periods. The mooring system under such conditions needs to be considered carefully during system design in order to safely control the motions of the tunnel-barge system in energetic ocean environments.

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Model test of immersed tube tunnel foundation treated by sand-flow method

Cited by 27 publications

References 7 publications

The Influence of Spatial Variation on the Design of Foundations of Immersed Tunnels: Advanced Probabilistic Analysis

The Influence of Spatial Variation on the Design of Foundations of Immersed Tunnels: Advanced Probabilistic Analysis

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

Hydrodynamic response of a submerged tunnel element suspended from a twin-barge under random waves

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