A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment

As the soil-resistance coefficient in a soft soil area is small, overlarge bending moment may cause exceeding transverse deformation for the shield tunnel and cause structural diseases and waterproof failure at the longitudinal segment joints. Hence, a new idea of cross-section design for a minimum...
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Autor*in:	Dawei Huang [verfasserIn] Hao Jiang [verfasserIn] Changjie Xu [verfasserIn] Wenbo Tu [verfasserIn] Xue Li [verfasserIn] Wei Wang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	minimum bending moment cross-section shield tunnel soft soil area design method

Übergeordnetes Werk:	In: Applied Sciences - MDPI AG, 2012, 12(2022), 3, p 1082
Übergeordnetes Werk:	volume:12 ; year:2022 ; number:3, p 1082

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/app12031082

Katalog-ID:	DOAJ01744053X

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callnumber-first	T - Technology
author	Dawei Huang
spellingShingle	Dawei Huang misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc minimum bending moment misc cross-section misc shield tunnel misc soft soil area misc design method misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment
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topic_title	TA1-2040 QH301-705.5 QC1-999 QD1-999 A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment minimum bending moment cross-section shield tunnel soft soil area design method
topic	misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc minimum bending moment misc cross-section misc shield tunnel misc soft soil area misc design method misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry
topic_unstemmed	misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc minimum bending moment misc cross-section misc shield tunnel misc soft soil area misc design method misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry
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title	A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment
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title_full	A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment
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title_sort	new design method of shield tunnel based on the concept of minimum bending moment
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title_auth	A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment
abstract	As the soil-resistance coefficient in a soft soil area is small, overlarge bending moment may cause exceeding transverse deformation for the shield tunnel and cause structural diseases and waterproof failure at the longitudinal segment joints. Hence, a new idea of cross-section design for a minimum bending moment shield tunnel was proposed. This article has first put forward the concept of a zero bending moment shield tunnel. Then, based on rational and feasible hypotheses, a structural mechanical model and an analytical expression of axis for the cross-section of the zero bending moment shield tunnel was obtained, and computational formulas of internal force and key geometry parameters were given. Based on the case of the metro shield tunnel constructed in the Shanghai soft soil area, the zero bending moment shield tunnel was designed, and its characteristics were analyzed. Considering only one cross-section of shield tunnel can be adopted in one metro line, the design method and procedure of the minimum bending moment shield tunnel were put forward. Finally, taking one of the Shanghai metro lines as an example, a cross-section of a minimum bending moment shield tunnel was designed, and its bending moment was compared with the bending moment of a circular section shield tunnel, which had the same horizontal diameter. The comparison revealed that the cross-section of the minimum bending moment can significantly reduce the bending moment of shield tunnel.
abstractGer	As the soil-resistance coefficient in a soft soil area is small, overlarge bending moment may cause exceeding transverse deformation for the shield tunnel and cause structural diseases and waterproof failure at the longitudinal segment joints. Hence, a new idea of cross-section design for a minimum bending moment shield tunnel was proposed. This article has first put forward the concept of a zero bending moment shield tunnel. Then, based on rational and feasible hypotheses, a structural mechanical model and an analytical expression of axis for the cross-section of the zero bending moment shield tunnel was obtained, and computational formulas of internal force and key geometry parameters were given. Based on the case of the metro shield tunnel constructed in the Shanghai soft soil area, the zero bending moment shield tunnel was designed, and its characteristics were analyzed. Considering only one cross-section of shield tunnel can be adopted in one metro line, the design method and procedure of the minimum bending moment shield tunnel were put forward. Finally, taking one of the Shanghai metro lines as an example, a cross-section of a minimum bending moment shield tunnel was designed, and its bending moment was compared with the bending moment of a circular section shield tunnel, which had the same horizontal diameter. The comparison revealed that the cross-section of the minimum bending moment can significantly reduce the bending moment of shield tunnel.
abstract_unstemmed	As the soil-resistance coefficient in a soft soil area is small, overlarge bending moment may cause exceeding transverse deformation for the shield tunnel and cause structural diseases and waterproof failure at the longitudinal segment joints. Hence, a new idea of cross-section design for a minimum bending moment shield tunnel was proposed. This article has first put forward the concept of a zero bending moment shield tunnel. Then, based on rational and feasible hypotheses, a structural mechanical model and an analytical expression of axis for the cross-section of the zero bending moment shield tunnel was obtained, and computational formulas of internal force and key geometry parameters were given. Based on the case of the metro shield tunnel constructed in the Shanghai soft soil area, the zero bending moment shield tunnel was designed, and its characteristics were analyzed. Considering only one cross-section of shield tunnel can be adopted in one metro line, the design method and procedure of the minimum bending moment shield tunnel were put forward. Finally, taking one of the Shanghai metro lines as an example, a cross-section of a minimum bending moment shield tunnel was designed, and its bending moment was compared with the bending moment of a circular section shield tunnel, which had the same horizontal diameter. The comparison revealed that the cross-section of the minimum bending moment can significantly reduce the bending moment of shield tunnel.
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title_short	A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment
url	https://doi.org/10.3390/app12031082 https://doaj.org/article/504928ddd1904e21a2654bda616de637 https://www.mdpi.com/2076-3417/12/3/1082 https://doaj.org/toc/2076-3417
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Finally, taking one of the Shanghai metro lines as an example, a cross-section of a minimum bending moment shield tunnel was designed, and its bending moment was compared with the bending moment of a circular section shield tunnel, which had the same horizontal diameter. 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A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment

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