Mechanical Properties of Super-large and Shallow-buried Loess Tunnel with the Prefabricated Temporary Support

doi:10.2174/1872212118666230307113032

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	Mechanical Properties of Super-large and Shallow-buried Loess Tunnel with the Prefabricated Temporary Support
	Cheng, Xuansheng1 ; Ding, Kai 1; Liu, Gongning 2; Bu, Yuyue 2
	2024
发表期刊	Recent Patents on Engineering
ISSN	1872-2121
卷号	18 期号:4 页码:1-12
摘要	Background: At present, there are few studies on the mechanical properties of tunnels with prefabricated temporary support. Based on the project of the Xichengshan Tunnel on the highway from Zhuanglang to Tianshui, this paper studies the mechanical properties of tunnels with prefabricated temporary support The utility model patent for this article is a temporary steel support device for loess tunnel excavation. The patent number is ZL 2022 2 0141276. 1. Objective: The study aims to show the mechanical properties of a super large section of prefabricated temporary support shallow tunnel. Methods: The mechanical properties of the tunnel surrounding rock, lining, steel arch, anchor, and temporary support during construction were analyzed by combining numerical simulation and theoretical analysis. The maximum and minimum stresses of the tunnel surrounding rock, lining, steel arch, and anchor, and the maximum and minimum displacements of prefabricated temporary support were found through the analysis results. Results: The stress and displacement fields of surrounding rock, lining, steel arch, bolt, and temporary support of loess tunnel were analyzed. Results showed that the maximum principal stress of the surrounding rock is 0.293 MPa, and the maximum horizontal displacement is 0.359 cm. The maximum horizontal displacement of the lining is 0.413 cm, the maximum vertical displacement of the steel arch is 1.538 cm, and the maximum displacement of the temporary support structure is 1.459 cm. The above data verify the safety of the proposed combined temporary support structure. Conclusion: Through the analysis results, the maximum and minimum stresses of the tunnel surrounding rock, lining, steel arch, and anchor, and the maximum and minimum displacements of assembled temporary support are found, which can guide subsequent construction. © 2024 Bentham Science Publishers.
关键词	Linings Numerical methods Patents and inventions Rocks Tunnels Arch supports Loess Loess tunnel Maximum stress Shallow-buried tunnel Steel arches Stress and displacement fields Super-large section Temporary support Tunnel surrounding rock
DOI	10.2174/1872212118666230307113032
收录类别	EI
语种	英语
出版者	Bentham Science Publishers
EI入藏号	20240815611734
EI主题词	Sediments
EI分类号	401.2 Tunnels and Tunneling ; 483 Soil Mechanics and Foundations ; 921.6 Numerical Methods ; 951 Materials Science
原始文献类型	Journal article (JA)
EISSN	2212-4047
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169960
专题	土木工程学院
通讯作者	Cheng, Xuansheng
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	土木工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Cheng, Xuansheng,Ding, Kai,Liu, Gongning,et al. Mechanical Properties of Super-large and Shallow-buried Loess Tunnel with the Prefabricated Temporary Support[J]. Recent Patents on Engineering,2024,18(4):1-12.
APA	Cheng, Xuansheng,Ding, Kai,Liu, Gongning,&Bu, Yuyue.(2024).Mechanical Properties of Super-large and Shallow-buried Loess Tunnel with the Prefabricated Temporary Support.Recent Patents on Engineering,18(4),1-12.
MLA	Cheng, Xuansheng,et al."Mechanical Properties of Super-large and Shallow-buried Loess Tunnel with the Prefabricated Temporary Support".Recent Patents on Engineering 18.4(2024):1-12.