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Comprehensive and Quantitative Evaluation of Subsea Tunnel Route Selection: A Case Study on Bohai Strait

  • Tunnel Engineering
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Abstract

The Bohai Sea is the immense inland sea in China and the Bohai Strait is a sea graben from East China to Northeast China which lies between the Jiaodong Peninsula and the Liaodong Peninsula. Considering the forthcoming Bohai Strait subsea tunnel, the authors selected nine indicators including seabed topography, stratigraphic lithology, geological structure, earthquake, environmental impact, engineering scale, ventilation conditions, residents’ satisfaction, and landing position. These indicators are considered as evaluation indexes to evaluate three alternative routes of the Bohai Strait subsea tunnel: line A, line B, and line C. In this paper, the evaluation model of the Bohai Strait subsea tunnel based on analytic hierarchy process (AHP) and extension theory is established. In this regard, the grade of route selection is divided into four categories: excellent, good, average, and bad. Finally, through the model calculations, it is concluded that line B of the Bohai Strait subsea tunnel is the best, and line A is the worst. This method provides a new idea for the evaluation of subsea tunnel site selection and also represents some references for other types of engineering site selection.

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Acknowledgments

Much of the work presented in this paper was supported by the National Natural Science Foundations of China (Grant numbers 51379112, 51422904 and 40902084), and Shandong Provincial Natural Science Foundation (Grant number JQ201513). The authors would like to express appreciation to the reviewers for their valuable comments and suggestions that helped improve the quality of our paper.

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Correspondence to Yiguo Xue.

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Xue, Y., Qu, C., Su, M. et al. Comprehensive and Quantitative Evaluation of Subsea Tunnel Route Selection: A Case Study on Bohai Strait. KSCE J Civ Eng 25, 3540–3555 (2021). https://doi.org/10.1007/s12205-021-1564-x

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  • DOI: https://doi.org/10.1007/s12205-021-1564-x

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