Ballast mats for the reduction of railway traffic vibrations. Numerical study

被引：121

作者：

Alves Costa, P. ^{[1
]}

Calcada, R. ^{[1
]}

Silva Cardoso, A. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, P-4100 Oporto, Portugal

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2012年 / 42卷

关键词：

GROUND-BORNE VIBRATION; DYNAMIC AXLE LOADS; GREENS-FUNCTIONS; TRACK; VALIDATION; VEHICLE; MODEL;

D O I：

10.1016/j.soildyn.2012.06.014

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

This paper presents a numerical study developed in order to understand the dynamic behavior of ballasted tracks with mats including the train-track-ground interaction. In order to achieve that goal, a case study is modeled by a 2.5D FEM-BEM formulation. A comprehensive approach is presented and the effects of the mat stiffness and location in depth are discussed. The comparison between isolated and non-isolated scenarios allowed concluding that the ballast mat has a dual effect, focusing on the train-track dynamic behavior and on the reduction of high-frequency vibrations that are transmitted to the ground. Furthermore, it was found that global efficiency can be reached by placing the mat beneath the subballast instead of below the ballast layer. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：137 / 150

页数：14

共 34 条

[1] Track-ground vibrations induced by railway traffic: In-situ measurements and validation of a 2.5D FEM-BEM model [J].