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Open AccessArticle

A Novel Calculation Method of Process Load for Extra-Large Section Tunnels

by Hongjie Gao 1,2,*, Ping He 1,2,*, Zheng Chen 1,2 and Xinyu Li 1,2
1
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
2
Tunneling and Underground Engineering Research Center of Ministry of Education, Beijing 100044, China
*
Authors to whom correspondence should be addressed.
Symmetry 2019, 11(10), 1228; https://doi.org/10.3390/sym11101228
Received: 13 August 2019 / Revised: 26 September 2019 / Accepted: 27 September 2019 / Published: 2 October 2019
The calculation of load and surrounding rock pressure of extra-large-section tunnels serves as an important premise for the design and construction of tunnel projects with extra-large sections. Based on the large-span section of the Shenzhen Liantang Tunnel (China), which is the largest highway tunnel in the world to date, this paper discusses the challenges existing in the calculation method of state load and surrounding rock pressure for extra-large-section tunnels and puts forward a novel calculation method for process load, which is suitable for extra-large-section highway tunnels. In the current work, we derived the related application correlations and improved the specific application steps, methods, and project models of the proposed calculation method. Both the rationality and feasibility of the calculation method were verified from a practical perspective by comparing the on-site data of surrounding rock pressure at the Liantang Tunnel with the calculated load, which provides a fundamental basis for the process design of tunnels. View Full-Text
Keywords: surrounding rock pressure; extra-large section; state load; process load surrounding rock pressure; extra-large section; state load; process load
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Gao, H.; He, P.; Chen, Z.; Li, X. A Novel Calculation Method of Process Load for Extra-Large Section Tunnels. Symmetry 2019, 11, 1228.

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