Seismic damage assessment of mountain tunnel: A case study on the Tawarayama tunnel due to the 2016 Kumamoto Earthquake

Zhang, Xuepeng; Jiang, Yujing; Sugimoto, Satoshi

doi:10.1016/j.tust.2017.07.019

Cited by 136 publications

(31 citation statements)

References 19 publications

(33 reference statements)

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“…With the rapid development of the economy and society in China, tunnels have to be built in areas of high earthquakeintensity where earthquakes frequently occur. Many investigations conducted after earthquakes have occurred indicate that the damage caused to the tunnel lining by a massive earthquake is very serious [1][2][3][4][5], and there are various forms of damage. Anti-seismic design for underground structures mainly concentrates on the following aspects.…”

Section: Introductionmentioning

confidence: 99%

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Anti-seismic Effect of the Shock Absorption Layer in Tunnel

Cao¹,

Zhang²,

Zhang³

2020

IJSSE

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Tunnels play a vital role in the transportation industry and many other industries. In fact, a tunnel damaged by an earthquake has a serious impact on traffic. Therefore, tunnel destruction induced by earthquakes have been paid more and more attentions. In this study, vibration theory is used for a simplified mechanical model of a tunnel lining system composed of a primary lining, a layer of shock absorption and a second lining. The parameters, such as the mass ratio, the damping ratio and the stiffness ratio of the vibration equation, are simplified correspondingly and solved in the complex domain, resulting in a simplified transfer coefficient. At the same time, numerical simulation and analysis are also carried out. The results show that: 1) The shock absorption layer with a low stiffness ratio has a good damping effect under low-frequency vibration, while under high-frequency vibration, the stiffness ratio has less influence on the transmission coefficient. 2) By analyzing the results of the theoretical calculation and numerical simulation, the tunnel structure under high-frequency vibration can be seen, and when the shock absorption layer stiffness is in close proximity to the second lining stiffness, the deformation and stress of the tunnel lining are the smallest. In general, the application of double-lining in strong earthquake zones can reduce the vibration of the tunnel lining and protect the tunnel from damage.

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Section: Introductionmentioning

confidence: 99%

“…Over the years, the problems of tunnel construction have been studied by many researchers, and many studies have been published [5][6][7][8][9]. Okamoto and Choshiro [10] pointed out that great developments have been made through research regarding the numerical analysis of the tunnel dynamic response at home and abroad.…”

Section: Introductionmentioning

confidence: 99%

Anti-seismic Effect of the Shock Absorption Layer in Tunnel

Cao¹,

Zhang²,

Zhang³

2020

IJSSE

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show abstract

“…So the dynamic response of the tunnel structure cannot be ignored in the realistic engineering project [6][7][8][9], which may be caused by the surrounding vibration source [10,11]. For this reason, the relationship between tunnel and vibration loading must be figured out [12,13] to ensure safety and stability of tunnel. Nevertheless, few studies have focused on the stability of the damaged tunnel influenced by the train vibration in the adjacent tunnel.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of Train Vibration Loading on Adjacent Damaged Tunnel

Zhao

Shi

Yang

2019

Shock and Vibration

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In this study, the effect of the high-speed train vibration loading on an adjacent damaged tunnel is investigated. Three sets are established to study the effects of the different vibration loadings on the tunnel lining considering the vertical excitation force of the CRH (China Railway High-speed) train. An expression of excitation force for the train vibration loading is applied to simulate the interaction force between wheel and rail, which is set with high-, medium-, and low-frequency responses, and reflects the influences of driving comfort, additional dynamic load, and rail corrugations. The eigenvalue analysis and spring damping absorbing boundary are applied in the numerical simulation. In addition, a quantitative criterion is selected as the allowable vibration peak velocity for the cracked structure. The analysis of the vibration velocity, dynamic deformation, and acceleration of the cracking region show that the secondary lining of this damaged tunnel in set 1 basically has a higher vibration response than that in set 2 for the closer running track. The most adverse working condition with the greatest impact on the lining structure is that two CRH trains simultaneously passing through the cross section in set 3.

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“…When an earthquake occurs tunnel structure may be damaged. The failure of tunnel structure caused by earthquake would inevitably lead to the paralysis of infrastructure, which results in a large number of economic losses and casualties [3][4][5][6]. Therefore, it is extremely important work to improve the seismic performance of tunnels.…”

Section: Introductionmentioning

confidence: 99%

Damping effects of different shock absorbing materials for tunnel under seismic loadings

Huang¹,

Wang²,

Zhou³

et al. 2019

J. vibroeng.

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Circular tunnels are widely used in infrastructure. Under the action of earthquakes, the destruction of circular tunnels will result in a large number of economic losses and casualties. Therefore, the study on shock absorption of tunnels is important. However, the research has not been sufficient on the effect of the damping layer on seismic response of a circular tunnel in sand. In this paper, the influence of the damping layer on the seismic response characteristics of circular tunnels in sand is studied by large-scale shaking table test. The actual El-centro wave is loaded to the model system in three directions during the tests. The input peak seismic acceleration values are 0.05 g, 0.1 g and 0.2 g. Then the effects of two different damping materials on the dynamic response characteristics of circular tunnels are analysed quantitatively. The test results show that the damping layer reduces the seismic response of the circular tunnel. The response accelerations of the tunnel bottom and crown without damping layer are greater than that with the damping layer, which indicates that damping layer absorbs the energy caused by the seismic motion. When the sponge rubber is used, the circular tunnel dynamic response is more attenuated than that with foam board. In conclusion, the shock absorbing layer can effectively reduce the seismic response of tunnel. As a result, the damage of the tunnel decreases under the earthquake. This study has clarified the isolation mechanism of the shock absorbing materials. It is recommended to use sponge rubber material as the shock absorbing layer.

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Seismic damage assessment of mountain tunnel: A case study on the Tawarayama tunnel due to the 2016 Kumamoto Earthquake

Cited by 136 publications

References 19 publications

Anti-seismic Effect of the Shock Absorption Layer in Tunnel

Anti-seismic Effect of the Shock Absorption Layer in Tunnel

Study of the Influence of Train Vibration Loading on Adjacent Damaged Tunnel

Damping effects of different shock absorbing materials for tunnel under seismic loadings

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