A methodology based on 2.5D FEM-BEM for the evaluation of the vibration energy flow radiated by underground railway infrastructures

Ghangale, Dhananjay; Villamarín, Robert Arcos; Clot, Arnau; Cayero, Julen; Romeu, J.

doi:10.1016/j.tust.2020.103392

Cited by 17 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this technique, the Green's displacement and Green's traction fields are calculated for the unique values of the sources depth and relative distances of the source-receiver points. Then, these Green's functions are mapped into the original configuration of sources and evaluation points by performing the required coordinate rotations [7].…”

Section: Description Of the Methodologymentioning

confidence: 99%

“…Later, the re-radiated noise inside the building was investigated using a 2.5D MFS in acoustics weakly coupled with the building vibration field obtained with the method presented in [5] [6]. More recently, Ghangale and his colleagues [7] presented a method for the prediction of the energy flow radiated by underground railway infrastructures based on a 2.5D FEM-BEM method to model the tunnel and the locally surrounding ground and on the semi-analytical solutions of a cylindrical cavity to model the wave propagation on the soil.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A 2.5D Fem-Bem-MFS Methodology for Soil-Structure Interaction Problems in Layered Half-Spaces

Liravi¹,

Villamarín²,

Ghangale³

et al. 2020

XI International Conference on Structural Dynamics

Self Cite

View full text Add to dashboard Cite

Section: Description Of the Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 2.5D Fem-Bem-MFS Methodology for Soil-Structure Interaction Problems in Layered Half-Spaces

Liravi¹,

Villamarín²,

Ghangale³

et al. 2020

XI International Conference on Structural Dynamics

Self Cite

View full text Add to dashboard Cite

“…A 2.5D hybrid methodology that considered the Finite Element Method (FEM) for modelling the track structure and the Boundary Element Method (BEM) to model the wave propagation through the soil was presented in [1]. The same approach was used by Ghangale et al [2], who developed a computationally efficient energy flow study that considered the 2.5D FEM-BEM model for computing the tunnel-soil interaction and analytical cavity solutions for modelling the wave propagation through the soil. An alternative approach was considered in [3], where the FEM is combined with the use of Perfectly Matched Layers (PML) to develop a hybrid 2.5D FEM-PML method for predicting railway-induced vibrations.…”

Section: Introductionmentioning

confidence: 99%

A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures

2023

View full text Add to dashboard Cite

This paper presents an efficient method to predict underground railway-induced vibrations. The method uses the finite element method (FEM) to model the railway tunnel structure and the singular boundary method (SBM) to model the wave propagation in the surrounding soil. The FEM mesh and the distribution of SBM collocation points at the tunnel/soil interface are generated using an automatic meshing strategy. The presented method is one of the main components of VIBWAY, a user-friendly prediction tool to address railway-induced vibration problems. This paper presents three calculation examples in which the soil response due to forces applied on the tunnel structure are computed in terms of transfer functions. The results obtained for each one of the calculation examples are compared with those computed using a model based on a 2.5D FEM-BEM approach. The presented comparisons show that the proposed approach is a suitable strategy for predicting underground railway-induced vibrations, both in terms of accuracy and computational efficiency. Moreover, the use of an automatic meshing strategy and the SBM formulation not only eases the implementation of the approach but it also makes it easier to use, which is one of the key features of the VIBWAY tool.

show abstract

“…Na Fu explored the vibration energy characteristics of a double-block ballasted track through a power flow method rooted in a train-track-bridge interaction model [14]. Dhananjay proposed a subway tunnel vibration power flow calculation method, comparing power flow between ordinary monolithic track beds and floating-slab tracks [15].…”

Section: Introductionmentioning

confidence: 99%

Influence of Fastener Stiffness and Damping on Vibration Transfer Characteristics of Urban Railway Bridge Lines Using Vibration Power Flow Method

Cao,

Yang,

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

The problem of vibration in urban rail transportation has become a current research hotspot. When a train passes through a bridge line at high speed, it interacts with the rail, leading to vibration energy transfer and causing issues such as vibration and noise in the line infrastructure. To propose a more targeted vibration-damping track structure, it is necessary to explore the vibration characteristics of urban rail transit bridge lines and understand the regulations governing the distribution of vibration energy. This paper employs the theory of vehicle–rail–bridge interaction to establish a coupled dynamics model for a subway A-type vehicle–integral ballast bed–box girder bridge. Based on the proposed model, the transmission characteristics and distribution of vibration energy in the rail–bridge system are systematically analyzed and the influence of the parameters of the track structural components on the power flow of the system are investigated. The results of this study indicate that low-frequency vibration energy in the track system of urban rail transit bridges is primarily concentrated within the track structure, whereas high-frequency vibration energy is mainly focused on the rail. The fastener, as a component connecting the rail and the overall roadbed, has different effects on the peak value of the power flow and the accumulation of vibration energy in various components such as the rail, the overall roadbed, the top plate of the box girder bridge, and the bottom plate in different frequency bands due to its own stiffness and damping. An appropriate increase in fastener damping is beneficial for reducing the accumulation of low-frequency vibration energy in the track structure.

show abstract

A methodology based on 2.5D FEM-BEM for the evaluation of the vibration energy flow radiated by underground railway infrastructures

Cited by 17 publications

References 41 publications

A 2.5D Fem-Bem-MFS Methodology for Soil-Structure Interaction Problems in Layered Half-Spaces

A 2.5D Fem-Bem-MFS Methodology for Soil-Structure Interaction Problems in Layered Half-Spaces

A 2.5D automatic FEM-SBM method for the evaluation of free-field vibrations induced by underground railway infrastructures

Influence of Fastener Stiffness and Damping on Vibration Transfer Characteristics of Urban Railway Bridge Lines Using Vibration Power Flow Method

Contact Info

Product

Resources

About