Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and numerical analysis of anchor-reinforced sleepers lateral resistance on ballasted track
Highlights Lateral resistance of anchor-reinforced sleepers is investigated by the field test. The contribution of sleeper anchors to the lateral resistance is investigated by DEM. A sensitive analysis was conducted on the length and position of anchors.
Abstract In this study, a series of field tests were performed on End Anchor-reinforced Sleeper (EAS) and Unreinforced Sleepers (URS) in order to assess changes in the lateral resistance of a ballasted track. In the next step, numerical modeling of single tie push tests (STPTs) was developed by DEM to quantify the contribution of sleeper anchors to the lateral resistance of sleepers. In this regard, lateral resistance of sleepers reinforced by the middle anchor, end anchors, and middle-end anchors was measured. According to the results, the end anchor has a higher contribution (about 31%) to the lateral resistance. On the other hand, there was an insignificant increase in the lateral resistance with the increase of the length of anchor spades; consequently, the length of 200 mm was defined as the optimum length of anchor spades. Overall, the application of full anchor sleepers is an appropriate solution to enrich the lateral resistance rather than shoulder ballast height increment.
Experimental and numerical analysis of anchor-reinforced sleepers lateral resistance on ballasted track
Highlights Lateral resistance of anchor-reinforced sleepers is investigated by the field test. The contribution of sleeper anchors to the lateral resistance is investigated by DEM. A sensitive analysis was conducted on the length and position of anchors.
Abstract In this study, a series of field tests were performed on End Anchor-reinforced Sleeper (EAS) and Unreinforced Sleepers (URS) in order to assess changes in the lateral resistance of a ballasted track. In the next step, numerical modeling of single tie push tests (STPTs) was developed by DEM to quantify the contribution of sleeper anchors to the lateral resistance of sleepers. In this regard, lateral resistance of sleepers reinforced by the middle anchor, end anchors, and middle-end anchors was measured. According to the results, the end anchor has a higher contribution (about 31%) to the lateral resistance. On the other hand, there was an insignificant increase in the lateral resistance with the increase of the length of anchor spades; consequently, the length of 200 mm was defined as the optimum length of anchor spades. Overall, the application of full anchor sleepers is an appropriate solution to enrich the lateral resistance rather than shoulder ballast height increment.
Experimental and numerical analysis of anchor-reinforced sleepers lateral resistance on ballasted track
Jing, Guoqing (Autor:in) / Ji, Yameng (Autor:in) / Aela, Peyman (Autor:in)
08.07.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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