Numerical simulation for large-scale seismic response analysis of immersed tunnel

Ding, Jingzhong; Jin, Xu; Guo, Yong; Gen-guo, LI

doi:10.1016/j.engstruct.2006.01.005

Cited by 86 publications

(18 citation statements)

References 12 publications

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“…In this study, six elements per wavelength are adopted. The total number of elements in this study is similar to that of elements used in the previous seismic analysis for the underground tunnel [8].…”

Section: Finite Element Model Overviewsupporting

confidence: 52%

“…Therefore, the potentially realistic forces at the contact zone can be simulated [26]. The penalty function method is adopted as the solution algorithm for contact [8]. In the penalty algorithm, contact conditions are imposed by penalizing the inter-penetration among contacting surfaces.…”

Section: Nonlinear Contact Algorithmmentioning

confidence: 99%

“…The traditional analytical method and two dimensional or simplified three dimensional analysis methods may create some inaccuracies, such as the overestimation or underestimation of tunnel deformations [6]. Due to the fact that the soil-structure interaction (SSI) is complicated and the underground structures may induce wave diffraction [7], it may need the help of the finite element method (FEM) to get accurate results especially under realistic conditions [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

et al. 2016

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Abstract:Parallel analyses about the dynamic responses of a large-scale water conveyance tunnel under seismic excitation are presented in this paper. A full three-dimensional numerical model considering the water-tunnel-soil coupling is established and adopted to investigate the tunnel's dynamic responses. The movement and sloshing of the internal water are simulated using the multi-material Arbitrary Lagrangian Eulerian (ALE) method. Nonlinear fluid-structure interaction (FSI) between tunnel and inner water is treated by using the penalty method. Nonlinear soil-structure interaction (SSI) between soil and tunnel is dealt with by using the surface to surface contact algorithm. To overcome computing power limitations and to deal with such a large-scale calculation, a parallel algorithm based on the modified recursive coordinate bisection (MRCB) considering the balance of SSI and FSI loads is proposed and used. The whole simulation is accomplished on Dawning 5000 A using the proposed MRCB based parallel algorithm optimized to run on supercomputers. The simulation model and the proposed approaches are validated by comparison with the added mass method. Dynamic responses of the tunnel are analyzed and the parallelism is discussed. Besides, factors affecting the dynamic responses are investigated. Better speedup and parallel efficiency show the scalability of the parallel method and the analysis results can be used to aid in the design of water conveyance tunnels.

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Section: Finite Element Model Overviewsupporting

confidence: 52%

Section: Nonlinear Contact Algorithmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

et al. 2016

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“…The other is the wave method which is based on solving the wave and stress field, through large-scale computer simulation. This method sets up a three-dimensional model, including the foundation soil, immersed tube tunnel, and soft joints, but there are disadvantages such as a larger workload and poor adaptability of the super-long immersed tube tunnels [77,78]. Because the topography and geological conditions change along the tunnel direction, when the structure length is equal to or exceeds one fourth of an earthquake wave length, the wave caused by vibration in the tunnel longitudinal direction differs.…”

Section: Immersed Tube Methodsmentioning

confidence: 99%

Research progress and development trends of highway tunnels in China

Wang

2013

J. Mod. Transport.

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The highway tunnel system in China has in recent years surpassed Europe, the United States, and other developed countries in terms of mileage, scale, complexity, and technical achievement. Much scientific research has been conducted, and the results have greatly facilitated the rapid development of China's highway tunnel building capacity. This article presents the historical development of highway tunneling in China, according to specific characteristics based on construction and operation. It provides a systematic analysis of the major achievements and challenges with respect to construction techniques, operation, monitoring, repair, and maintenance. Together with future trends of highway tunneling in China, suggestions have been made for further research, and development prospects have been identified with the aim of laying the foundation for a Chinese-style highway tunnel construction method and technical architecture.

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“…However, only few experimental results on the joint under shear loading are available although they are applied in practice for a long time already. So farre search on the shear performance has mainly been conducted by simulation [1][2][3] . The use of a linear or bi-linear model to simulate a shear key in a numerical analysis of a joint under lateral shear actions is based on simplified assumptions.…”

mentioning

confidence: 99%

Static and Dynamic Experimental Analysis of An Immersion Joint

Xiao¹,

Yuan²,

Taerwe³

et al. 2016

IABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions

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SummaryAs the weakest part of an immersed tunnel, the immersion joint is the key element in research in this field. Relatively large deformations and internal forces may be induced in the immersion joint subjected to various loading types. Based on a real project, the shear mechanical behaviour is investigated by large scale model test. To explore the performance of the immersion joint, compression-shear loads are applied on a tunnel segment in a specific test set-up. For the applied loading schemes, different levels of axial force, corresponding to the water depth of the joint, are considered as well as varying amplitudes of the shear force. Based on these results, both the static and dynamic shear stiffness of an immersion joint were analysed. The results of the test indicate that the static shear stiffness of the joint increases linearly with the axial force and the same trend is found for the dynamic one. Moreover, the dynamic stiffness is larger than the static one. Keywords: immersed tunnel; immersion joint; shear key; structural experiment; shear stiffness. IntroductionAn immersion joint is the connecting part between two adjacent elements of an immersed tunnel. Compared to that of the elements, the stiffness of the immersion joint is relatively small. When it is subjected to shear actions, whether resulting from vertical foundation settlement or horizontal earthquake movements, shear-resistance of the joint is the main concern for a safe and reliable water-proof design. Hence, the immersion joint is always considered as a key part not only for the connection between elements but also the proof for the water tightness. A flexible immersion joint, which normally includes a rubber seal and the shear keys installed between two adjacent elements, has been a common solution in practice for more than 50 years. The way in which the shear keys and the rubber seal behave in the joint together is of importance to a comprehensive understanding of the shear behavior of the joint. The shear behavior of the joint is mainly characterized by its stiffness. However, only few experimental results on the joint under shear loading are available although they are applied in practice for a long time already. So farre search on the shear performance has mainly been conducted by simulation [1][2][3] . The use of a linear or bi-linear model to simulate a shear key in a numerical analysis of a joint under lateral shear actions is based on simplified assumptions.To figure out the shear performance of an immersion joint under transverse shear action, an experimental investigation on the static and dynamic shear stiffness of a model immersion joint is presented in this paper. Compression-shear quasi-static loading is cyclically applied to a specimen, with a geometric scale of 1/10 with respect to a real design. The patterns of compression-shear are set-up according to a certain axial water pressure on a joint, to which it would be subjected during its service life at typical buried depths, and to transverse shear movement due to seis...

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Numerical simulation for large-scale seismic response analysis of immersed tunnel

Cited by 86 publications

References 12 publications

Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

Parallel Dynamic Analysis of a Large-Scale Water Conveyance Tunnel under Seismic Excitation Using ALE Finite-Element Method

Research progress and development trends of highway tunnels in China

Static and Dynamic Experimental Analysis of An Immersion Joint

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