Multi-point shaking table test of a long tunnel subjected to non-uniform seismic loadings

Yu, Haitao; Yan, X.; Bobet, Antonio; Yuan, Yong; Guo-ping, XU; Su, Quanke

doi:10.1007/s10518-017-0223-6

Cited by 105 publications

(17 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is paper used a centrifugal model test and finite element analysis to simulate the construction process of the HZMB's (Hong Kong-Zhuhai-Macao Bridge) K9 + 600 section of an immersed tunnel with a weak foundation. e stress and strain characteristics of the excavated backfill base and the deformation characteristics of the immersed tunnel structure were studied, providing some basis for engineering design [71][72][73][74][75][76][77]. e concrete results are as follows:…”

Section: Discussionmentioning

confidence: 99%

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

Yue

Xie

2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The deformation characteristics of a weak foundation with high back siltation in an immersed tunnel lack empirical data; however, the calculation method and control of foundation settlements are highly important to tunnel design and construction. This paper takes a cross section of the natural foundation of an immersed tunnel in the Hong Kong-Zhuhai-Macao Bridge (HZMB) as the research object and conducts a centrifuge model test. The soil layer is divided, and the soil parameters are determined by the CPTU and the indoor dynamic three triaxial test. In consideration of the actual engineering scale and the ability of the centrifuge model test system, the similarity ratio of the model to the prototype is studied and determined. As for the immersed tube structure, the deformation characteristics are mainly studied. Therefore, the organic glass is selected as the model material by the similarity of the elastic modulus and the density. The characteristics of the resilience and recompression of the natural foundation of the immersed tunnel and the strain characteristics of the immersed tube structure are obtained by the analysis of the multiworking condition test data. Moreover, based on the actual engineering geological conditions of the subsea tunnel, a numerical calculation method is carried out to check the reliability of the centrifuge model test results. The results of the numerical calculation are consistent with the model test results.

show abstract

Section: Discussionmentioning

confidence: 99%

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

Yue

Xie

2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The seismic design and analysis of tunnels has been investigated for many decades . Many researchers have explored the seismic response of tunnels under body waves through various methods, such as model tests, numerical simulations, and analytical methods . However, it is acknowledged that the safety of shallow tunnels far from the epicenter of an earthquake is mainly compromised by Rayleigh waves .…”

Section: Introductionmentioning

confidence: 99%

Analytical solution for longitudinal seismic response of long tunnels subjected to Rayleigh waves

Yang

Yuan

et al. 2020

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

The longitudinal seismic response of a long tunnel subjected to Rayleigh waves is investigated in this paper. The tunnel is assumed to be infinitely long, has a uniform cross section, and rests on a viscoelastic foundation. The free-field deformation under Rayleigh waves traveling parallel to the tunnel axis is decomposed into two directions, namely, the axial motion and the vertical motion, and transformed into dynamic loads imposed on the tunnel. Based on the Fourier and Laplace integral transform techniques, the governing equations of tunnels are simplified into algebraic equations, and the analytical solutions are obtained with the convolution theorem. The final solutions of the tunnel responses in terms of deflection, velocity, acceleration, axial force, bending moment, and shear force are investigated. The proposed solution is verified by comparison of its results and those from the finite element program ABAQUS. Further parametric analysis is carried out to investigate the influence of soil-structure relative stiffness ratio and wave frequency on dynamic longitudinal responses of the tunnel. K E Y W O R D S analytical solution, integral transform, long tunnel, Rayleigh waves

show abstract

“…Recently, with the continuous railway and highway construction in China, tunnel engineering has been developing in situations of long, large and deep burial [1][2][3][4][5][6][7]. It is inevitable more long tunnels will be built in soft and weak surrounding rock areas [8][9][10][11][12][13][14]. Large deformation of soft rock mass is one of the common geological hazards when a tunnel passes through soft rock mass [15][16][17], and is also a long-term problem plaguing tunnel construction [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Stress Field Distribution and Deformation Law of Large Deformation Tunnel Excavation in Soft Rock Mass

et al. 2019

View full text Add to dashboard Cite

The problem of large deformation is very prominent in deep-buried tunnel excavation in soft rock, which brings serious potential safety hazards and economic losses to projects. Knowledge of the stress field distribution and deformation law is the key to ensuring rational design and safe construction in large deformation tunnels of soft rock. As described in this paper, theoretical analysis, numerical simulation and field monitoring were employed to investigate the surrounding rock stress and displacement state in the Dongsong hydropower station in Sichuan Province, China. The results show that the short-bench construction method can effectively control the deformation of surrounding rock and range of the plastic zone. In order to reserve enough working space, the optimum bench length in the actual construction was 10 to 14 m. The peripheral displacement and plastic radius decreased with the increase of tunnel support strength and the advance of supporting time. The displacement can be effectively controlled by applying the second lining in time at a position about twice the diameter of the hole (16 m) from the working face. A reasonable reserved deformation should be adopted to avoid secondary expanding excavation. The values of different positions in the tunnel laterally and longitudinally may be different, and adjustments are needed according to the actual situation.

show abstract

Multi-point shaking table test of a long tunnel subjected to non-uniform seismic loadings

Cited by 105 publications

References 10 publications

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

Analytical solution for longitudinal seismic response of long tunnels subjected to Rayleigh waves

Stress Field Distribution and Deformation Law of Large Deformation Tunnel Excavation in Soft Rock Mass

Contact Info

Product

Resources

About