Deformation rule of loess highway tunnel with two lanes

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	Deformation rule of loess highway tunnel with two lanes
	Chen, Jian-Xun 1; Wang, Meng-Shu 2; Xuan, Jun-Jie 3; Qiao, Xiong1,4
	2012-06-01
发表期刊	Jiaotong Yunshu Gongcheng Xuebao/Journal of Traffic and Transportation Engineering
ISSN	16711637
卷号	12 期号:3 页码:9-18
摘要	Relying on seven single-tunnel double-lane loess tunnels at Wubu to Zizhou section in Shaanxi Province on national main trunk line GZ35 from Qingdao to Yinchuan, the constructing deformations were measured by in-situ test method, and the regression analysis of test results was carried out. Analysis result shows that in the constructing process by using bench method, the arch settlements are far bigger than the clearance convergences. The tunnel deformation of surrounding rock experiences three stages: rapid deformation stage at the initial stage of excavation, sustainable growth stage and slow increasing stage. The deformation rule of loess tunnel accords with logarithmic distribution, but the logarithmic function is divergent, so the final displacement is not predicted. The deformation of surrounding rock is slowly increasing for a long time. It is not in accordance with the actual requirements and can not guarantee the stabilities of tunnel surrounding rock and supporting structure, and construction safety when the constructing time of secondary lining is estimated by using norms. So the deformation of tunnel should be controlled by using arch settlement in the constructing process of tunnel. The constructing principle of rapid excavating, rapid supporting and rapid closing is put forward for loess tunnel. Strengthening initial supporting, adding crus-locking anchors, quick constructing side walls and timely constructing secondary lining are carried out to avoid large settlement of arch surrounding rock and to ensure the stability of tunnel structure.
关键词	Arches Deformation Locks (fasteners) Regression analysis Rocks Sediments Testing Deformation of surrounding rock Deformation rules Loess tunnel Logarithmic distribution Logarithmic functions Monitoring measurements Tunnel engineering Tunnel surrounding rock
收录类别	EI
语种	中文
出版者	Chang'an University
EI入藏号	20123415365316
EI主题词	Tunnels
EI分类号	401.2 Tunnels and Tunneling - 408.2 Structural Members and Shapes - 483 Soil Mechanics and Foundations - 922.2 Mathematical Statistics
来源库	Compendex
分类代码	401.2 Tunnels and Tunneling - 408.2 Structural Members and Shapes - 483 Soil Mechanics and Foundations - 922.2 Mathematical Statistics
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111742
专题	土木工程学院
作者单位	1.School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2.School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 3.School of Civil Engineering, Northwest University for Nationalities, Lanzhou 730030, Gansu, China; 4.School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
推荐引用方式 GB/T 7714	Chen, Jian-Xun,Wang, Meng-Shu,Xuan, Jun-Jie,et al. Deformation rule of loess highway tunnel with two lanes[J]. Jiaotong Yunshu Gongcheng Xuebao/Journal of Traffic and Transportation Engineering,2012,12(3):9-18.
APA	Chen, Jian-Xun,Wang, Meng-Shu,Xuan, Jun-Jie,&Qiao, Xiong.(2012).Deformation rule of loess highway tunnel with two lanes.Jiaotong Yunshu Gongcheng Xuebao/Journal of Traffic and Transportation Engineering,12(3),9-18.
MLA	Chen, Jian-Xun,et al."Deformation rule of loess highway tunnel with two lanes".Jiaotong Yunshu Gongcheng Xuebao/Journal of Traffic and Transportation Engineering 12.3(2012):9-18.