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Sub-Rectangular Tunnel Behavior Under Seismic Loading

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Download scientific diagram | Circular tunnel with the same utilization space area, distances in millimeters. from publication: Sub-Rectangular Tunnel Behavior ‪Doctoral Student, Hanoi University of Mining and Geology‬ – ‪‪Cited by 62‬‬ – ‪Tunnelling‬ – ‪Mining‬ – ‪Numerical‬ – ‪Earthquake analysis‬ The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated.

Tunnel Shape Influence on the Tunnel Lining Behavior

(PDF) 2D Dynamic Numerical Modelling of a Tunnel -Soil -Building System ...

Circular and rectangular tunnel shapes are usually chosen when excavating at shallow depths in urban areas. However, special-shaped tunnels such as sub-rectangular tunnels have recently been used to overcome some drawbacks of circular and rectangular tunnels in terms of low space utilization efficie

A new pseudo-static loading scheme applied to the sub-rectangular tunnel under seismic condition. Validation with finite difference models in different scenarios.

PHAM VAN VI BEHAVIOR OF SUB-RECTANGULAR TUNNELS UNDER SEISMIC LOADING Major: Underground construction engineering Code: 9580204 PhD THESIS SUPERVISORS: 1. Asso. Prof., Dr. Do Ngoc Anh 2. Prof., Dr. Dias Daniel HA NOI, May 2022 TIEU LUAN MOI download : BỘ GIÁO DỤC VÀ ĐÀO TẠO TRƯỜNG ĐẠI HỌC MỎ – ĐỊA CHẤT PHẠM VĂN VĨ ABSTRACT In seismic tunnel lining design, most existing studies have focused on circular and box-type tunnels, while the response of subrectangular tunnel linings under seismic loading, especially in imperfect soil-lining conditions, remains underexplored. In tunneling practices, it is vital to have an accurate estimate of the depth of embedment of the tunnel; lining thickness and shape of the tunnel, which enables resisting of stresses; and deformation generated by the surrounding soil under seismic loading conditions. The present study highlights the behavior of shallow tunnel in soft soil under seismic conditions

Download scientific diagram | Sub-rectangular express tunnel in Shanghai [22], distances in millimeters. from publication: Sub-Rectangular Tunnel Behavior under Seismic Loading | Circular and

For this purpose, the present research proposes an innovative concept to analyze the tunnel in simplified form by considering some variable parameters to evaluate the tunnel responses under gravity loading. The simplified form of the tunnel is treated as a 4-nodded rectangular element. In seismic tunnel lining design, most existing studies have focused on circular and box‐type tunnels, while the response of subrectangular tunnel linings under seismic loading, especially in

Performance and Seismic Design of Underground Structures

Mechanical behaviour of segmental lining of a sub-rectangular shield tunnel under self-weight. Tunnelling and Underground Space Technology 74:131-144. Liu C, Zhang Z*, Kwok C, Jiang Q, Teng L. 2017. Ground Responses to Tunneling in Soft Soil Using the URUP Method. Journal of Geotechnical and Geoenvironmental Engineering 143 (7): 04017023. The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated. Circular- and rectangular-shaped tunnels are usually utilized when excavating at shallow depths in urban areas. Nevertheless, special-shaped tunnels such as sub-rectangular tunnels were recently considered to be used for overcoming some drawbacks of circular and rectangular tunnels in terms of low utilization space ratio and stress concentration at the

  • Performance and Seismic Design of Underground Structures
  • BEHAVIOR OF SUBRECTANGULAR TUNNELS UNDER SEISMIC LOADING.
  • Sub-rectangular Tunnel Behaviour under Static Loading

The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated. Pham VV, Do NA and Dias D (2021), “Sub-Rectangular Tunnels Behavior Under Seismic Loading,” Applied Sciences, 11 (21): 9909. https://doi.org/10.3390/app11219909 Sub-rectangular Tunnel Behaviour under Static Loading V. PhamN. DoD. DiasC. NguyenV. K. Dang Engineering, Environmental Science Transportation Infrastructure Geotechnology 14 February 2022

The response of tunnels subjected to seismic loading is a complex mechanism and depends not only on the seismic nature but also on tunnel structure and surrounding soil properties. The individual behavior of circular, rectangular, and sub-rectangular tunnels subjected to seismic loadings has already been studied in the literature.

The response of tunnels subjected to seismic loading is a complex mechanism and depends not only on the seismic nature but also on tunnel structure and surrounding soil properties. The individual behavior of circular, rectangular, and sub-rectangular tunnels subjected to seismic loadings has already been studied in the literature. The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated. The corresponding IDA percentiles lines are calculated, and the seismic fragility curves of the bifurcated tunnels are established. The post-earthquake functional failure probability of the bifurcated tunnels is obtained under different seismic fortification performance level.

Seismic Stability Analysis of Tunnel Faces in Heterogeneous and ...

Request PDF | On Mar 1, 2013, George P Kouretzis and others published Effect of interface friction on tunnel liner internal forces due to seismic S-and P-wave propagation | Find, read and cite all 展开更多 The response of tunnels subjected to seismic loading is a complex mechanism and depends not only on the seismic nature but also on tunnel structure and surrounding soil properties.The individual behavior of circular,rectangular,and sub-rectangular tunnels subjected to seismic loadings has already been studied in the literature.In The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated.

However, just a few researches have looked into sub-rectangular tunnels so far. In this paper, the performance of sub-rectangular tunnel under A New Pseudo-Static Loading Scheme for the Hyperstatic Reaction Method – Case of Sub-Rectangular Tunnels under Seismic Conditions Article Mar 2023 Ngoc Anh Do Vi Van Pham Daniel Dias In that respect it is important to consider that the specific geometric and conceptual features of underground structures make their seismic behavior and performance very distinct from the behavior of aboveground structures, as they are subjected to strong seismic ground deformations and distortions, rather than inertial loads.

ABSTRACT In seismic tunnel lining design, most existing studies have focused on circular and box-type tunnels, while the response of subrectangular tunnel linings under seismic loading, especially in imperfect soil-lining conditions, remains underexplored. Circular and rectangular tunnel shapes are usually chosen when excavating at shallow depths in urban areas. However, special-shaped tunnels such as sub-rectangular tunnels have recently been used to overcome some drawbacks of circular and rectangular tunnels in terms of low space utilization efficie Request PDF | A New Pseudo-Static Loading Scheme for the Hyperstatic Reaction Method – Case of Sub-Rectangular Tunnels under Seismic Conditions | In recent years, many different methods for

In this paper, taking a twin-lane metro tunnel as an example, the optimization process of sub-rectangular tunnels in terms of tunnel lining forces is presented using the Hyperstatic Reaction Method (HRM). A series of mathematical functions considering the tunnel shape are used and the optimization of sub-rectangular tunnels shape is

The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated.

The influence of soil’s Young’s modulus on the sub-rectangular tunnel behavior under quasi-static loading is also investigated. The results indicated that soil’s Young’s modulus significantly affects static, incremental, and total internal forces Hyperstatic Reaction Method (HRM) is a simple but effective method with attractive features in calculating internal forces and deformations of the tunnel lining. The superior ability of the HRM method under static conditions inspires the further development of this method for tunnel seismic design. This paper implements an improved HRM method for estimating seismic

The influence of parameters, such as soil deformations, maximum horizontal acceleration, and lining thickness, on sub-rectangular tunnel behavior under seismic loading is also investigated.