TAILIEUCHUNG - Dynamic response of three dimension tunnel on elastic foundation subjected to moving vehicle loads

This paper is devoted to study dynamic response of a tunnel surrounded by elastic foundation under moving vehicle loads by using the finite element method (FEM). The numerical results were then validated by an experimentation on a real structure. | Vietnam Journal of Mechanics, VAST, Vol. 37, No. 2 (2015), pp. 105 – 122 DOI: DYNAMIC RESPONSE OF THREE DIMENSION TUNNEL ON ELASTIC FOUNDATION SUBJECTED TO MOVING VEHICLE LOADS Nguyen Thai Chung∗ , Do Ngoc Tien Le Quy Don Technical University, Hanoi, Vietnam ∗ E-mail: thaichung1271@ Received November 24, 2014 Abstract. Dynamic response analysis of tunnel with elastic foundation subjected to the load such as the hydrostatic pressure, seismic or moving load is an important but complicate problem in transport engineering due to increasing of traffic volume. This paper is devoted to study dynamic response of a tunnel surrounded by elastic foundation under moving vehicle loads by using the finite element method (FEM). The numerical results were then validated by an experimentation on a real structure. Keywords: Tunnel, moving load, dynamic analysis, experimental testing. 1. INTRODUCTION ¨ Moller et al. [1], Vermeer et al. [2], investigated tunnel structures subjected to static loads in the framework of 3D model and validated then by experimental results. By using finite element method, Hyon et al. [3], Sramoon et al. [4], Hussein and Hunt [5], the tunnel structures subjected to moving load were analyzed by Shi et al. [6], Yang et al. [7], Clouteau and Degrande [8] using three dimensions model. In the latter studies the moving load is equivalently reduced to an immobile dynamic load on the pavement and three dimension model for tunnel with foundation has not been considered. This paper is devoted to study dynamic response of tunnel and foundation in three dimension model subjected to moving vehicle loads. First, the governing equations are derived by using the finite element procedure. Then, the system’s dynamic response is computed by using the Newmark’s method and MATLAB program. Finally, an experimental test on the reinforced concrete double tunnel in the Lang-Hoa Lac highway was carried out to validate the numerical model and

• Cơ khí - Chế tạo máy
• Vietnam Journal of Mechanics
• Dynamic response of three dimension tunnel
• Elastic foundation subjected to moving vehicle loads
• The finite element method
• Moving vehicle loads
• Dang Dinh Ang
• Nonlinear analysis and mechanics
• Dynamic problems involving stationary cracks
• The Wiener Hopt technique
• Dual integral equations
• Dual integrals in non linear fracture mechanics
• Non linear fracture mechanics
• Energy release rate
• Discuss the obtained
• The alpha finite element method (αFEM)
• Solid mechanics using triangular and tetrahedral elements
• Suitable computational cost
• NS FEM makes
• The upper bound property
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• Non linear constitutive problems
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• High flexural strength
• Low shrinkage and high watertightness for restoration
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• Standard gradient models
• The propagation of cracks
• Damage mechanics and crack simulation
• The interaction between two parametric excitations
• The second and third degrees
• The asymptotic method of nonlinear mechanics
• Dynamic system governed
• Comparison of two hydrological model simulations
• Nam and Xinanjiang for Nong Son catchment
• The Central Vietnam
• The runoff components
• 3 D numerical simulation
• The tidal circulation
• The gulf of Tonkin
• The kinetic energy distribution
• Duality in the analysis of responses to nonlinear systems
• The analysis of responses
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• The study of nonlinear mechanics
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• Water layer formation
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• Von Karman Donnell sense
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• Evaluating structural safety based on fuzzy set theory
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• The fuzzy reliability
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