TY - JOUR
T1 - Experimental and numerical study on lateral and longitudinal resistance of ballasted track with nailed sleeper
AU - Guo, Yunlong
AU - Zong, Lu
AU - Markine, Valeri
AU - Wang, Xinyu
AU - Jing, Guoqing
N1 - Accepted Author Manuscript
PY - 2021
Y1 - 2021
N2 - Lateral and longitudinal resistance of ballasted track are two main indicators for the track stability quantification. Aiming at improving the lateral and longitudinal resistance, nailed sleeper is studied with single sleeper push tests (SSPTs) and discrete element modelling (DEM). The SSPTs were applied to study how much resistance the nailed sleeper can improve, considering different nail lengths (100, 200, 400 mm), and also used to calibrate and validate the DEM models. With the validated DEM models, different simulation conditions were performed and compared to confirm the optimal nail length (100, 200 mm) and nail number (2, 4). Results show that applying nailed sleepers improves the lateral resistance by 53.7% and the longitudinal resistance by 39.2%. 4 nails, compared to 2 nails, can increase lateral and longitudinal resistance by 20.2% and 10.6% (nail length: 100 mm) as well as 37.0% and 33.5% (nail length: 200 mm), respectively.
AB - Lateral and longitudinal resistance of ballasted track are two main indicators for the track stability quantification. Aiming at improving the lateral and longitudinal resistance, nailed sleeper is studied with single sleeper push tests (SSPTs) and discrete element modelling (DEM). The SSPTs were applied to study how much resistance the nailed sleeper can improve, considering different nail lengths (100, 200, 400 mm), and also used to calibrate and validate the DEM models. With the validated DEM models, different simulation conditions were performed and compared to confirm the optimal nail length (100, 200 mm) and nail number (2, 4). Results show that applying nailed sleepers improves the lateral resistance by 53.7% and the longitudinal resistance by 39.2%. 4 nails, compared to 2 nails, can increase lateral and longitudinal resistance by 20.2% and 10.6% (nail length: 100 mm) as well as 37.0% and 33.5% (nail length: 200 mm), respectively.
KW - ballasted track
KW - DEM
KW - lateral resistance
KW - Longitudinal resistance
KW - nailed sleeper
KW - track stability
UR - http://www.scopus.com/inward/record.url?scp=85099451501&partnerID=8YFLogxK
U2 - 10.1080/23248378.2021.1872424
DO - 10.1080/23248378.2021.1872424
M3 - Article
AN - SCOPUS:85099451501
SN - 2324-8378
VL - 10 (2022)
SP - 114
EP - 132
JO - International Journal of Rail Transportation
JF - International Journal of Rail Transportation
IS - 1
ER -