Results 61 to 70 of about 18,753 (176)
Advances in Civil Engineering, Volume 2026, Issue 1, 2026.Assessing pavement sustainability requires jointly evaluating structural performance and environmental impacts, yet these dimensions are often analyzed separately. This study proposes an integrated framework combining mechanistic–empirical pavement design and life cycle assessment (LCA) to quantify the structural–environmental trade‐off associated with
Alexandre Simas de Medeiros +3 more
wiley +1 more source
Journal of Traffic and Transportation Engineering (English ed. Online)Railway ballast is easily contaminated by different fouling material and the fouled ballast always causes the deterioration of railway track. Many previous studies focused on the effect of a certain kind of fouling material on ballast performance, but ...
Xu Zhang +4 more
doaj +1 more source
Ballast Contamination Mechanisms: A Criterial Review of Characterisation and Performance Indicators
Infrastructures, 2020 Across the world, ballasted railway tracks are utilised extensively due to their cost efficiency, ease of drainage, and capacity to withstand cyclic imposed loadings from heavy trains.
Daniel Bassey +4 more
doaj +1 more source
A direct method for analyzing the vertical vehicle-structure interaction [PDF]
, 2011 A new method for the dynamic analysis of the vertical vehicle-structure interaction is presented. The vehicle and structure systems can be discretized with various types of finite elements and may have any degree of complexity.
A.F.M. Azevedo +20 more
core +1 more source
A Machine Learning Approach for Forecasting Rail Degradation in Railway Systems
Journal of Advanced Transportation, Volume 2026, Issue 1, 2026.In railway systems, the contact between rolling stock wheels and rails causes continuous wear, requiring periodic rail replacement to ensure operational safety and reliability. Traditional methods to estimate rail lifetime often fail to account for the specific conditions of each railway, leading to inaccurate forecasts.
Gledson Fábio Cotrim Rocha +4 more
wiley +1 more source
Tests of geosynthetics-reinforced ballast stressed state under heavy trains [PDF]
MATEC Web of Conferences, 2019 Nowadays requirements for strength and stability of railway subgrade are increased. It occurs due to raising of train speed and axle load. Some sections of subgrade that were previously considered stable do not satisfy safety requirements. In this regard,
Petriaev Andrei, Konon Anastasia
doaj +1 more source
Impact of wheel shape on the vertical damage of cast crossing panels in turnouts [PDF]
, 2015 Impact forces generated in the load transfer area of railway crossing panels lead to a range of degradation modes from wear and fatigue of the contacting materials, fatigue of supporting components to ballast/subgrade deterioration.
Bezin, Yann +3 more
core
Frost Heaving in Ballast Railway Tracks
Procedia Engineering, 2017 Abstract Frost heave is a well-known phenomenon in cold regions. It may happen in the wet clayey ground during winter in seasonally frozen regions and during autumn to winter in active layers in permafrost regions. The railway track upheaval, which happens in cold regions, is generally understood as due to frost heaving in subgrade layers.
Satoshi Akagawa +2 more
openaire +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat +6 more
wiley +1 more source
Multi-objective model for optimizing railway infrastructure asset renewal [PDF]
, 2018 Trabalho inspirado num problema real da empresa Infraestruturas de Portugal, EP.A multi-objective model for managing railway infrastructure asset renewal is presented. The model aims to optimize three objectives, while respecting operational constraints:
Almeida, Luís Alçada +2 more
core +2 more sources