Robust geotechnical design of shield-driven tunnels using fuzzy sets

Hongwei Huang, Wenping Gong, C. Hsein Juang, Sara Khoshnevisan

研究成果: 書貢獻/報告類型會議論文篇章同行評審

1 引文 斯高帕斯(Scopus)

摘要

This paper presents a new geotechnical design concept - robust geotechnical design (RGD) - which seeks to minimize the variation of the tunnel circumferential performance to the uncertainty of geotechnical parameters (which is a measure of design robustness) in addition to meeting the requirements of safety and cost efficiency. To this end, uncertain geotechnical parameters are represented as fuzzy sets (or more specifically, fuzzy numbers) to copy with the scarcity of data, which provides an adequate measure of the uncertainties when the knowledge is incomplete or data is limited. Given fuzzy input parameters, the circumferential performance of a shield-driven tunnel is uncertain and logically expressed as a fuzzy factor of safety, Based upon which the failure probabilities and robustness of the tunnel circumferential performance can be computed in the RGD framework. Finally, to aid in the selection of the optimal design that maximizes robustness and minimizes cost simultaneously while the safety is brought to the target level, non-dominated optimization is performed and a Pareto front is obtained. the knee point located on the Pareto front is further identified and recommended as the optimal design, showing the best compromise between robustness and cost. The proposed RGD methodology of shield-driven tunnels is deterministic in nature. Through an illustrative design example presented, the effectiveness and significance of the proposed RGD methodology in the design of shield-driven tunnels for the circumferential performance is demonstrated.

原文???core.languages.en_GB???
主出版物標題Tunneling and Underground Construction - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress
發行者American Society of Civil Engineers (ASCE)
頁面184-194
頁數11
版本242 GSP
ISBN(列印)9780784413449
DOIs
出版狀態已出版 - 2014
事件2014 GeoShanghai International Congress: Tunneling and Underground Construction - Shanghai, China
持續時間: 26 5月 201428 5月 2014

出版系列

名字Geotechnical Special Publication
號碼242 GSP
ISSN(列印)0895-0563

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???event.eventtypes.event.conference???2014 GeoShanghai International Congress: Tunneling and Underground Construction
國家/地區China
城市Shanghai
期間26/05/1428/05/14

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