Study on vibration response of submerged floating tunnel considering vehicle eccentric load

Yang, Yunshen; Xiang, Yiqiang; Lin, Heng; Chen, Zhengyang

doi:10.1016/j.apor.2021.102598

Cited by 19 publications

(4 citation statements)

References 22 publications

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“…Although in the past decade, scholars or engineers from the world have done a lot of researches and exploration, which includes the preliminary design of engineering structures, the combination of SFT load and limit state design method, mechanical analysis and dynamic response behavior of SFTs and components , fluid-structure coupling mechanism [17,19,[35][36][37], the experimental test and study [35,[38][39][40][41][42][43][44][45][46], the behavior of SFTs under action of accidental load, such as, preliminary studies on vibration response mechanism and prevention measures under general impact load, seismic excitation, explosion and blast impacts and partial failure of anchor cables [4,[19][20][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62], and corresponding construction simulation [63], construction technologies and equipment, durability analysis, smart monitoring and early warning system of anchor cables, SFT and environment [64][65][66]. But the working behavior and mechanism of the SFT under complex sea waters is not very clear, there is a certain distance from making the specification of design and construction methods or guide for SFT etc.…”

Section: Characteristics and Research Status Of Sftmentioning

confidence: 99%

Solution to the traffic problems of long and deep water straits–smart submerged floating tunnel and its research

Xiang

Chen

Shen

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Submerged floating tunnel (SFT) is a new type of structure across long and deep water straits and waterways with good application prospects. The structure is different from the traditional large-span bridges and immersed tunnels, which can effectively avoid difficulty under the construction of bridges foundation in deep water straits and channel, the high cost of large span bridge, influence of typhoons and heavy fog et al. severe weather on the vehicle driving on the bridges, a series of technical problems confronted under the construction of immersed tunnel or tunnel excavation in complex marine geology and the deep sea and risk control and so on. This paper, in the light of the characteristics of submerged floating tunnels and the requirements of marine deep water environment, discusses some of technical challenges faced in the designing and building the SFT, points out that it is necessary to systematically study the design and load condition, the smart composite material and shape optimization, the calculation theory and method for analyzing the structural behavior, the structure safety evaluation, construction methods and key technology, and engineering risk analysis, smart monitoring, evaluation and control, code or guide for design and construction of SFT. It lays foundation for design, construction and engineering risk analysis, etc. of submerged floating tunnel across the long and deep waterways in the future.

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Section: Characteristics and Research Status Of Sftmentioning

confidence: 99%

Solution to the traffic problems of long and deep water straits–smart submerged floating tunnel and its research

Xiang

Chen

Shen

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Compared with other structures (e.g., bridges and immersed tube tunnels) of cross-water transportation, the main benefits of the submerged floating tunnel include (Jiang et al, 2018;Kim and Kwak, 2022;Kwon et al, 2022): (i) it is suspended at a certain depth underwater so that it does not affect the water surface navigation and is basically unaffected by the adverse weather (e.g., strong breeze) on the water surface (compared with bridges); (ii) its engineering layout position is relatively shallow so that the construction angle and length of the structures are smaller and the effect of complex seabed topography (e.g., submarine canyon) can be ignored (compared with immersed tube tunnels); (iii) its structural features of prefabricated segmental connection are not limited by the water depth and structure span so that the construction stability is easier to guarantee. The above benefits of submerged floating tunnels show potential and competitiveness in the technical solutions of cross-water transportation, which currently has become a research hotspot in industry and academia (e.g., Ingerslev, 2010;Martinelli et al, 2011;Kristoffersen et al, 2019;Jin and Kim, 2020;Yang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Feasibility of submerged floating tunnel with polygonal cross-sections — investigation from a viewpoint of submarine slide hazards

Fan

et al. 2023

Front. Mar. Sci.

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Recently, submerged floating tunnels have generated a lot of interest due to their unique cross-water traffic benefits. However, the destructive threat of submarine slide hazards was not fully considered in the design scheme of submerged floating tunnels, in particular to the feasibility of applying various cross-section forms on land to submerged floating tunnels under that hazard influence. This study mainly investigates the load effect of submerged floating tunnels with polygonal cross-sections (comprising three types: square, hexagon, and octagon) under the impact of submarine slides, via a computational fluid dynamics (CFD) approach. Results show that the impact forces produced by submarine slides on submerged floating tunnels are significant (e.g., submarine slides with a velocity of 4 m/s may produce a force level near 1×105 N/m), where the horizontal impact force components should be given priority consideration based on the general working environment of submerged floating tunnels. Compared with typical circle tunnels, polygonal tunnels suffer higher impact forces, and the polygonal types with fewer edges show a greater impact force. Finally, a simplified force evaluation approach for the submerged floating tunnel with polygonal cross-sections is proposed for guiding the relevant engineering design.

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“…In terms of the sources, the dynamic loads include the hydrodynamic forces by wave (Zou et al, 2021) and/or current (Zhang et al, 2021), inner/outer impact and explosion (Kristoffersen et al, 2019;Colombo et al, 2021;Luo et al, 2021a), earthquake (Fogazzi and Perotti, 2000;Martinelli et al, 2011;Lee et al, 2016;Xie and Chen, 2021), moving vehicles (Lin et al, 2018(Lin et al, , 2019Xiang et al, 2021;Yang et al, 2021), etc. Of course, the studies of two or more kinds of dynamic loads on SFT simultaneously considering (Di Pilato et al, 2008;Jin and Kim, 2018;Luo et al, 2021b;Jin et al, 2021) are widely found.…”

Section: Introductionmentioning

confidence: 99%

Two elastic supporting models to simulate the submerged floating tunnel and their equivalence on the free/forced vibrations

Yan

Pan

et al. 2023

Journal of Vibration and Control

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By applying two elastically supporting styles, the elastic supports beam (ESB) and elastic foundation beam (EFB) are proposed to simulate the underwater submerged floating tunnel (SFT) under hinged boundaries. Their equivalence is investigated through the frequencies/modes and forced responses caused by equidistant moving loads. The ESB model is built by regarding each tether as an elastic support and using the novel isolating/assembling technique between beam-segments and global tube, and the order of characteristic matrix for any number of intermediate elastic supports is reduced to 4 × 4. Then, the stiffness of all elastic supports and the uniformity/non-uniformity are well considered in the ESB model. The governing equations of the EFB model with a uniform linear elastic support are also given. The newly discovered results, which are verified by the finite element method (FEM), indicate the merging phenomena appear in the frequency spectrum in the ESB model. The equivalence holds for some uniform cases in the ESB model based on the peak values of responses by using the stiffness relationship and a correction coefficient, whereas the equivalence does not exist for the uneven case of elastic supports.

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Study on vibration response of submerged floating tunnel considering vehicle eccentric load

Cited by 19 publications

References 22 publications

Solution to the traffic problems of long and deep water straits–smart submerged floating tunnel and its research

Solution to the traffic problems of long and deep water straits–smart submerged floating tunnel and its research

Feasibility of submerged floating tunnel with polygonal cross-sections — investigation from a viewpoint of submarine slide hazards

Two elastic supporting models to simulate the submerged floating tunnel and their equivalence on the free/forced vibrations

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