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Full-Text Articles in Science and Technology Studies
Application Of Geoinclusions For Sustainable Rail Infrastructure Under Increased Axle Loads And Higher Speeds, Buddhima Indraratna, Fernanda Bessa Ferreira, Yujie Qi, Ngoc Trung Ngo
Application Of Geoinclusions For Sustainable Rail Infrastructure Under Increased Axle Loads And Higher Speeds, Buddhima Indraratna, Fernanda Bessa Ferreira, Yujie Qi, Ngoc Trung Ngo
Faculty of Engineering and Information Sciences - Papers: Part B
Given the ongoing demand for faster trains for carrying heavier loads, conventional ballasted railroads require considerable upgrading in order to cope with the increasing traffic-induced stresses. During train operations, ballast deteriorates due to progressive breakage and fouling caused by the infiltration of fine particles from the surface or mud-pumping from the underneath layers (e.g. sub-ballast, sub-grade), which decreases the load bearing capacity, impedes drainage and increases the deformation of ballasted tracks. Suitable ground improvement techniques involving geosynthetics and resilient rubber sheets are commonly employed to enhance the stability and longevity of rail tracks. This keynote paper focuses mainly on research …
Advancement In Track Technology - Composite Foundations For Increased Speed And Axle Loads, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn
Advancement In Track Technology - Composite Foundations For Increased Speed And Axle Loads, Buddhima Indraratna, Ngoc Trung Ngo, Cholachat Rujikiatkamjorn
Faculty of Engineering and Information Sciences - Papers: Part B
The increasing demand for fast heavy haul services with greater axle loads, as well as high speed commuter trains, poses a serious challenge for the stability of tracks on the problematic ground. The use of artificial inclusions such as polymeric geosynthetics for enhanced soil-structure interaction and rubber mats made from recycled rubber tyres to absorb the strain energy and reduce ballast breakage and track damage is described in this paper as a cost-effective option. In this study, a series of large-scale laboratory tests took place to determine how well these geogrids could attenuate the impact, cyclic stress, and corresponding mitigation …