Deformation and mechanical characteristics of tunnel lining in tunnel intersection between subway station tunnel and construction tunnel

Li, Yayong; Jin, Xiaoguang; Lu, Zu Hong; Dong, Jianghui; Guo, Jincheng

doi:10.1016/j.tust.2016.02.016

Cited by 59 publications

(21 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e deformation undergoes expansion and stabilization stages and needs longer time for stability. With passing the time, the surrounding rock gradually tends to be stable, and the stability time of surrounding rock is different under different grades [27][28][29]. e crown would create the whole settlement after excavation, and the differential settlement is little between the crown and the walls [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Influence of Cover Depth on Loess Tunnel Deformation in NW China

Lai

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

Loess is a kind of special soil with structure and hydrocollapse behavior; due to the particularity of loess, the deformation regularity of the tunnel in loess shows different characteristics from those in rock. To ensure the safety of construction, crown settlement (CS) and horizontal convergence (HC) are widely used to assess the stability of the tunnel structural system. Based on statistical analysis, this study focused on analyzing the influence of cover depth on the deformation of surrounding rock of loess tunnels by ANOVA, and relationships between them were presented by regression analysis. The achieved results indicated that the influence of cover depth on deformation was not obvious in shallow tunnels, while the cover depth had a significant effect on deformation in deep tunnels. Based on the difference of influence of cover depth on deformation between shallow tunnels and deep tunnels, a method for determining the cover depth threshold (CDT) in the tunnel by statistical analysis was proposed. The horizontal and vertical deformations in shallow tunnels were discrete and obeyed the positive distribution, mainly concentrated within 200 mm. The deformation allowance in shallow tunnels was recommended to be 200 mm. In deep tunnels, as the cover depth increased, the deformation increased linearly, while the CS/HC decreased.

show abstract

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Influence of Cover Depth on Loess Tunnel Deformation in NW China

Lai

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Analytical solutions for tunnel bending moment and axial force evaluation are studied by Abate and Massimino [25], and the response of a tunnel lining was expressed as a function of the compressibility and flexibility ratios of the tunnel and the overburden pressure and at-rest coefficient of the earth pressure of the soil. However, for tunnels in irregular shape or complex construction procedure, numerical methods have to be adopted especially for dynamic problems [26].…”

Section: Methodsmentioning

confidence: 99%

Numerical Evaluation on Dynamic Response of Existing Underlying Tunnel Induced by Blasting Excavation of a Subway Tunnel

Zhou¹,

Luo²,

Li³

et al. 2017

Shock and Vibration

View full text Add to dashboard Cite

In Southwest China, most regions are mountainous, where traditional drill-and-blast method is adopted to excavate relatively harder rocks. However, blasting would cause vibration to adjacent structures and might result in damage or even failure. This paper considers a case where subway tunnel is overlying an existing railway tunnel, while the excavation requires blasting method. Vibration and stress distribution are calculated via Dynamic Finite Element Method (DFEM) for both full-face excavation and CD method. Result shows that vibration induced by CD method is only 28% of that caused by full-face blasting with same distance. Peak vibration is located on the lining facing the blasting source, while peak tensile stress is on the other side of the contour due to the reflection of stress wave on strata boundary. And peak value of tensile stress induced by full-face blasting is capable of causing lining failure; thus full-face blasting is not suggested within 40 m beyond the underlying tunnel axis. However, CD method has shown much advantage, since blasting within 25 m is also considered safe to the underlying tunnel. But when the blasting source is as near as 12 m within the underlying tunnel, the CD method is no longer safe.

show abstract

“…Typically, the station excavation is completed before the tunnel is drilled or, on the contrary, the excavation of the station is stopped until the tunnel is finished. Some researchers have studied a similar problem, as Li (2016), but not for precast segmental linings.…”

Section: Literature Reviewmentioning

confidence: 99%

Innovative solutions for intersection of TBM tunnel and station in Riyadh Line 5 metro

Schneider

Molina²,

Mendiola³

et al. 2018

Tunnelling and Underground Space Technology

View full text Add to dashboard Cite

One of the main problems when constructing a metro line using a tunnel boring machine (TBM) is the coordination of the construction of the tunnel with the excavation of the stations that it will intersect. The drilling speed of the tunnel varies from the predicted one, it being possible to reach the stations before their complete excavation. This paper presents a solution to this problem, one which has been implemented in the Riyadh Metro L5. This solution allows the construction of the tunnel and the later excavation of the station, while maintaining the operation of the TBM and the tunnel lining.

show abstract

Deformation and mechanical characteristics of tunnel lining in tunnel intersection between subway station tunnel and construction tunnel

Cited by 59 publications

References 18 publications

Statistical Analysis of Influence of Cover Depth on Loess Tunnel Deformation in NW China

Statistical Analysis of Influence of Cover Depth on Loess Tunnel Deformation in NW China

Numerical Evaluation on Dynamic Response of Existing Underlying Tunnel Induced by Blasting Excavation of a Subway Tunnel

Innovative solutions for intersection of TBM tunnel and station in Riyadh Line 5 metro

Contact Info

Product

Resources

About