Dynamic response characteristics and failure mode of a bias loess tunnel using a shaking table model test

Many tunnels were subjected earthquake. According to the damaged features of tunnels in earthquakes indoorsand outdoors, the macroscopic damage of tunnels are summarized. On the base of the damage manifestation, the failure mechanism of tunnel damage is preliminarily analyzed. Comparison with the failure mode on the shaking table model test has been made, and some suggestion of on the weak links at the tunnel entrance, faults and shallow buried section for designers has been put forward.

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Shaking Table Model Test of Slope Seismic Dynamic Response

Journal of Highway and Transportation Research and Development (English Edition) ◽

10.1061/jhtrcq.0000546 ◽

2017 ◽

Vol 11 (1) ◽

pp. 23-32

Author(s):

Zhi-jun Zhou ◽

Ya-lun Fan ◽

Kun-fa Yan

Keyword(s):

Dynamic Response ◽

Model Test ◽

Shaking Table ◽

Table Model ◽

Shaking Table Model Test

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Shaking Table Model Test on the Dynamic Response of Anti-dip Rock Slope

Geotechnical and Geological Engineering ◽

10.1007/s10706-018-0679-4 ◽

2018 ◽

Vol 37 (3) ◽

pp. 1211-1221 ◽

Cited By ~ 3

Author(s):

Xixia Feng ◽

Qinghui Jiang ◽

Xiaobo Zhang ◽

Huichao Zhang

Keyword(s):

Dynamic Response ◽

Model Test ◽

Rock Slope ◽

Shaking Table ◽

Table Model ◽

Shaking Table Model Test

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Shaking Table Model Test and Numerical Modeling for Tunnels Traversing Faultage

The Open Civil Engineering Journal ◽

10.2174/1874149501509010789 ◽

2015 ◽

Vol 9 (1) ◽

pp. 789-798 ◽

Cited By ~ 1

Author(s):

Yang Bo ◽

Zheng Yingren ◽

Lai Jie ◽

Liu yun ◽

Li Xiudi

Keyword(s):

Model Test ◽

Earth Pressure ◽

Damage Mechanism ◽

Shaking Table ◽

Tensile Failure ◽

Concrete Lining ◽

Acceleration Response ◽

Response Characteristics ◽

Table Model ◽

Shaking Table Model Test

To reveal the response and damage mechanism of a tunnel across through the fracture zone under earthquake, a shaking table model test and numerical analysis were introduced, where the scale of the numerical simulation and the model test was 1:1. The tunnel acceleration response and the crack, development process, strain response characteristics and dynamic stress distribution of lining were investigated. The results show that the tunnel lining will be subjected to large tension and compressive stress, when its tensile strength is insufficient, tension fracture would generate in the bottom of the arch or near both sides of the arch foot , so reinforced concrete lining should be adopted in order to improve its ability to bear the tensile failure; the acceleration response of lining increases with the increase of input seismic acceleration; dynamic earth pressure response is more intense on both sides of the surrounding rock. This research can serve as a reference for the seismic design of the tunnel.

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Dynamic Characteristics of Metro Tunnel Closely Parallel to a Ground Fissure

Complexity ◽

10.1155/2019/6450853 ◽

2019 ◽

Vol 2019 ◽

pp. 1-11

Author(s):

Nina Liu ◽

Quanzhong Lu ◽

Xiaoyang Feng ◽

Wen Fan ◽

Jianbing Peng ◽

...

Keyword(s):

Dynamic Response ◽

Model Test ◽

Shaking Table ◽

Dynamic Strain ◽

Good Correspondence ◽

Ground Fissure ◽

Similarity Relations ◽

Table Model ◽

Metro Tunnel ◽

Shaking Table Model Test

Shaking table model test and numerical simulation model were conducted on scaled tunnel model to investigate the mechanism and effect of seismic loadings on metro tunnel which is closely parallel to an active ground fissure. Key technical details of the experimental test were set up; for example, similarity relations, boundary conditions, sensors layout, and modelling methods were presented. Synthetic wave, El Centro wave, and Kobe wave were adopted as the input earthquake waves. Results measured from shaking table model and numerical model were compared and analyzed. It is found that the fissure increased the dynamic response features as accelerations and strains of the tunnel, especially in the part close to the fissure. Average incremental percentage of acceleration amplifying coefficient was 8.33% from the wall close to fissure than the symmetrical one. The short distance to fissure led to serious circumferential dynamic strain, while the distance to fissure influenced the axial dynamic strain less. The numerical analysis results have a good correspondence with those of the shaking table model test. The waves at the top of tunnel have more scattering and emission effect. The fissure increases the dynamic response of the tunnel close to it.

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