A precast slab track partially reinforced with GFRP rebars

Seung-Jung Lee , Do-Young Moon , Chi-Hyung Ahn , Jong-Woo Lee , Goangseup Zi

Abstract

This study developed and investigated a precast slab track system partially reinforced with glass fiber reinforced polymer (GFRP) rebars in the transverse direction, which mitigated the loss of track circuit current by reducing magnetic coupling between the rails and steel reinforcements. An electric analysis was conducted and the results of the analysis verified that the GFRP rebars mitigate the reduced current strength produced by electro-magnetic induction. In the study, a threedimensional finite element method and flexural experiments were used to study the mechanical behavior of the proposed slab track.

Key Words

slab track; concrete; track circuit current; magnetic coupling; glass fiber reinforced polymer (GFRP)

Address

Seung-Jung Lee, Chi-Hyung Ahn — Korea Railroad Research Institute, 176 Cheoldobangmulgwan-ro, Uiwang, Gyeonggi-do 16105, Republic of Korea
Do-Young Moon — Department of Civil Engineering, Kyungsung University, 309 Suyeong-ro, Nam-gu, Busan 48434, Republic of Korea
Jong-Woo Lee — Department of Railway Electrical & Signaling Engineering, Seoul National University of Science and Technology,232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
Goangseup Zi — School of Civil, Environmental & Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea

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