Performance of the Prestressed Composite Lining of a Tunnel: Case Study of the Yellow River Crossing Tunnel

Yang, Fan; Cao, Shengfei; Qin, Gan

doi:10.1007/s40999-016-0124-0

Cited by 29 publications

(6 citation statements)

References 15 publications

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“…e bottom of the PTCL is directly poured on the segmental lining, and the others are separated from the segmental lining by the membrane. e membrane can play a role in waterproo ng and drainage [13].…”

Section: Basic Information About the Yellow Rivermentioning

confidence: 99%

Effect of Deficiencies in the Tunnel Crown Thickness on Pressure Tunnels with Posttensioned Concrete Linings

Qin

Cao

Yang

2018

Advances in Civil Engineering

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is paper investigates the effect of deficiencies in the tunnel crown thickness on pressure tunnels with the posttensioned concrete lining. Based on the lining parameters of the Yellow River Crossing Tunnel, the modeling approach of the posttensioned concrete lining is introduced in detail and a three-dimensional finite element model is established. e three-dimensional finite element model is validated by experimental results from the full-scale model experiment of the Yellow River Crossing Tunnel. Special attention is given to the changes in the deformation, radial displacement, and circumferential stress of the posttensioned concrete lining with gradual decreases in the tunnel crown thickness. e calculation results show that the influence scopes of deficiencies in the tunnel crown thickness are mainly concentrated in the crown and its adjacent parts. e posttensioned concrete lining can still maintain a satisfactory stress state when deficiencies in the tunnel crown thickness exist, and undesirable stress levels may be caused only when the tunnel crown thickness decreases below a certain threshold. Furthermore, cracks are most likely to occur at the external and internal surfaces of the crown and at the internal surface of the crown's adjacent parts, which is useful for taking measurements regarding the lining tightness and stability.

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Section: Basic Information About the Yellow Rivermentioning

confidence: 99%

Effect of Deficiencies in the Tunnel Crown Thickness on Pressure Tunnels with Posttensioned Concrete Linings

Qin

Cao

Yang

2018

Advances in Civil Engineering

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“…For example, the Trans-Tokyo Bay Highway Tunnel used a secondary lining with a thickness of 35 mm as a structural safety buffer in the Tokyo Bay area with soft submarine strata and significant water pressure [18]. However, existing studies show [19] that the secondary lining can be used as one of the load-bearing structures in a shield tunnel to enhance the overall stiffness. Furthermore, with the development of urban rail transit, the shield tunnel is facing more complex engineering situations, and the design and usage requirements are constantly being improved.…”

Section: Introductionmentioning

confidence: 99%

The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties

Chai,

Yan,

et al. 2023

Applied Sciences

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In the field of shield tunnels, the occurrence of uneven longitudinal settlement in segment linings has presented persistent challenges, including heightened risks of localized damage and water leakage. While the adoption of a secondary lining has been proposed as a viable solution to these issues, the question of how to select an appropriate construction time for the secondary lining, one that enables it to fully harness its load-bearing capacity while optimizing the tunnel’s overall stress and deformation characteristics, continues to be a pressing concern. To address this issue, this study established a three-dimensional longitudinal refined numerical model of double-layer-lined shield tunnel. In addition, the deformation degree of the segment lining was used as a time indicator to define the construction time for the secondary lining. Subsequently, an analysis of the impact of the construction time of the secondary lining on the longitudinal mechanical properties of the double-layer-lined shield tunnel is conducted through an assessment of tunnel longitudinal deformation and structural stress. The research findings indicated that the construction of the secondary lining improved the longitudinal deformation resistance of shield tunnels. Simultaneously, it led to a significant increase in the longitudinal shear forces within the segment lining and a notable reduction in longitudinal bending moments. Moreover, the construction time of the secondary lining played a pivotal role in these alterations. Considering the longitudinal force situations and load-bearing characteristics of the double-layer lining structure, it was determined that the optimal construction time for the secondary lining fell within the range of 20% to 40% of the total construction duration. In this scenario, the deformation and internal forces within the segment lining remained within permissible limits. Additionally, both the segment lining and the secondary lining were able to fully utilize their load-bearing capacities, ensuring the economic and safety aspects of the tunnel.

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“…To mitigate the engineering disaster risks associated with tunnel instability due to repeated disturbances in surrounding rock, scholars have diligently researched various aspects of tunnel excavation through theoretical analysis, numerical simulation, and on-site measurements (Ng et al, 2018;Yang et al, 2018;Xue et al, 2021). Some notable studies have focused on the mechanical behavior of surrounding rock, excavation methods, intersection angles, and spatial position relationships.…”

Section: Introductionmentioning

confidence: 99%

Construction stability analysis of intersection tunnel in city under CRD method

Ren,

Zhou,

Jia

et al. 2023

Front. Earth Sci.

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The construction of city intersection tunnels cause multiple redistribution of surrounding rock stress, resulting in the engineering disasters such as instability in existing tunnels and collapses of ground buildings. To mitigate formation disturbances effectively, the Center Cross Diagram (CRD) method is employed in city tunnel construction. In this study, a numerical model for a city intersection tunnel is developed based on an underground circular roads project in Chongqing, China, to analyze the safety of the tunnel structure and the stability of ground buildings under the CRD method. The numerical simulation results obtain that the excavation of pilot-tunnel ➃ will reduce the surrounding rock stress and control the rock strata subsidence, and reveal that the excavation of pilot-tunnel ➃ is the key step of CRD method. The maximum compressive stress and tensile stress of surrounding rock first increase and then decrease during the excavation of pilot-tunnels ➀, ➁, ➂, and ➃. Simultaneously, the deformation of the ground building experiences a slow initial increase followed by a rapid rise before stabilizing. Furthermore, the excavation of the main tunnel leads to an increase of 0.73, 0.35, and 0.52 times in the vault subsidence value, left haunch convergence value, and right haunch convergence value of branch tunnel #1, respectively. Finally, the convergence process of branch tunnel #1 is discussed through the in-situ monitoring, which is divided into three stages: rapid deformation, deceleration deformation, and stable deformation. The final horizontal convergence value and subsidence value of cross-section K0+360 are respectively 84% and 78% of those at cross-section K0+395.

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Performance of the Prestressed Composite Lining of a Tunnel: Case Study of the Yellow River Crossing Tunnel

Cited by 29 publications

References 15 publications

Effect of Deficiencies in the Tunnel Crown Thickness on Pressure Tunnels with Posttensioned Concrete Linings

Effect of Deficiencies in the Tunnel Crown Thickness on Pressure Tunnels with Posttensioned Concrete Linings

The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties

Construction stability analysis of intersection tunnel in city under CRD method

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