Next Article in Journal
A Novel Hybrid Harmony Search Approach for the Analysis of Plane Stress Systems via Total Potential Optimization
Next Article in Special Issue
Damage Identification Based on Adding Mass for Liquid–Solid Coupling Structures
Previous Article in Journal
A Dynamic Gesture Recognition Interface for Smart Home Control based on Croatian Sign Language
Previous Article in Special Issue
Rail Pad Corrosion Effects on the Dynamic Behavior of Direct Fixation Track Systems in Marine Environments
Article

Comparative Study of Wheel–Rail Contact Impact Force for Jointed Rail and Continuous Welded Rail on Light-Rail Transit

1
Department of Construction Engineering, Dongyang University, No. 145 Dongyangdae-ro, Pugggi-eup, Yeongju-si, Gyeongsangbuk-do 36040, Korea
2
Technical Director, SAM DONG LAND CO. LTD, 3rd Floor, 23, Samseong-ro 96-gil, Gangnam-gu, Seoul 06167, Korea
3
Department of Architectural Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2299; https://doi.org/10.3390/app10072299
Received: 5 March 2020 / Revised: 25 March 2020 / Accepted: 26 March 2020 / Published: 27 March 2020
(This article belongs to the Special Issue Advances on Structural Engineering)
In this study, the measured track impact factor induced by the wheel–rail contact impact force of each test section (two continuous welded rails on slab tracks and rail joint on a ballasted track) was compared with the design track impact factor under service conditions of a curved light-rail transit system. The measured track impact factor (TIF) was estimated from the measured dynamic wheel load and vertical rail displacement at each test section. In the case of the rail joint section, the rail joint was found to directly affect the track impact factor. Moreover, the dynamic wheel load fluctuation and vertical rail displacement were found to be significantly greater than those of the continuous welded rails (CWRs) on slab tracks. In addition, vertical rail displacements were measured by field measurement and finite element analysis (FEA) was conducted to simulate dynamic wheel load on the jointed rail. Using the field measurements, the rate of dynamic wheel load fluctuation and the TIF were calculated for the CWR and rail joint sections. Subsequently, the calculated TIF values were analytically validated through a comparison with the measured vertical rail displacement, the results of FEA, and the designed TIF for rail joints and CWRs. Finally, the TIF measured by field measurement was compared with the result predicted by FEA. The difference between the results of field measurements and FEA for vertical rail displacement was within approximately 4%. View Full-Text
Keywords: track impact factor; rail joint; finite element analysis (FEA); dynamic wheel load; vertical rail displacement; field measurement track impact factor; rail joint; finite element analysis (FEA); dynamic wheel load; vertical rail displacement; field measurement
Show Figures

Figure 1

MDPI and ACS Style

Choi, J.-Y.; Yun, S.-W.; Chung, J.-S.; Kim, S.-H. Comparative Study of Wheel–Rail Contact Impact Force for Jointed Rail and Continuous Welded Rail on Light-Rail Transit. Appl. Sci. 2020, 10, 2299. https://doi.org/10.3390/app10072299

AMA Style

Choi J-Y, Yun S-W, Chung J-S, Kim S-H. Comparative Study of Wheel–Rail Contact Impact Force for Jointed Rail and Continuous Welded Rail on Light-Rail Transit. Applied Sciences. 2020; 10(7):2299. https://doi.org/10.3390/app10072299

Chicago/Turabian Style

Choi, Jung-Youl, Sang-Won Yun, Jee-Seung Chung, and Sun-Hee Kim. 2020. "Comparative Study of Wheel–Rail Contact Impact Force for Jointed Rail and Continuous Welded Rail on Light-Rail Transit" Applied Sciences 10, no. 7: 2299. https://doi.org/10.3390/app10072299

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop