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Geomechanics and Engineering Volume 27, Number 4, November25 2021 , pages 375-390 DOI: https://doi.org/10.12989/gae.2021.27.4.375 |
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Adaptability of earth pressure balance shield tunneling in coastal complex formations: a new evaluation method |
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Weifeng Qian, Ming Huang, Chunming Sun, Bin Huang, Gengfeng Wang and Heng Liu
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| Abstract | ||
| It is difficult to tunnel in the coastal region of complex formations due to the lack of research into the adaptability of shield tunneling. A new method based on the fuzzy comprehensive evaluation model and analytic hierarchy process (AHP) approach was proposed to evaluate the adaptability of shield tunneling. Furthermore, an improved genetic algorithm (IGA) was introduced to calculate the weight of the index, which overcomes the defect of the AHP in terms of consistency testing. The evaluation model of adaptability was established based on the comprehensive analysis of the factors influencing adaptability in coastal complex formations. A case study on the adaptability evaluation of the Peng-Cai shield zone of Xiamen Metro was introduced to verify the application of the proposed method. The results indicated that the evaluation result accords with engineering practice and the proposed method can be used to evaluate the adaptability of shield tunneling. | ||
| Key Words | ||
| adaptability evaluation, AHP; evaluation method; IGA; shield tunneling | ||
| Address | ||
| Weifeng Qian:College of Civil Engineering, Fuzhou University, Fuzhou, China Ming Huang:College of Civil Engineering, Fuzhou University, Fuzhou, China Chunming Sun:College of Civil Engineering, Fuzhou University, Fuzhou, China Bin Huang:CCCC First Highway Xiamen Engineering CO., LTD, Xiamen, China Gengfeng Wang:China Railway 11th Bureau Group Fourth Engineering CO., LTD, Wuhan, China Heng Liu:Xiamen XGMA CREC Heavy Machinery CO., LTD, Xiamen, China | ||