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http://dx.doi.org/10.7782/JKSR.2017.20.5.637

Deformation and Stress Distribution of Discontinuous Precast Concrete Track Slab : II. Stress Distribution  

Lee, Dong Hoon (Railway & Metro Division / Engineering Design Dept., Soosung Engineering Co., Ltd.)
Kim, Ki Hyun (High-Speed Railroad System Research Center, Korea Railroad Research Institute)
Jang, Seung Yup (Department of Transportation System Engineering, Graduate School of Transportation, Korea National University of Transportation)
Zi, Goangseup (School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University)
Publication Information
Journal of the Korean Society for Railway / v.20, no.5, 2017 , pp. 637-648 More about this Journal
Abstract
In this paper, the effects of initial built-in deformation and temperature deformation on the stress distribution of discontinuous precast concrete track slab under train load were examined. According to the results, when train load is put on a precast concrete slab with initial built-in deformation and deformation due to temperature gradient, the maximum tensile stresses develop at the upper side of slab in the slab center, edge center and corner of shear pocket; the stress distribution is different from that of the case under train load only. Therefore, to accurately predict the actual weak points and failure modes, one should calculate the stress under train load considering the initial built-in and temperature deformation of the slab.
Keywords
Precast concrete track; Finite element analysis; Temperature; Deformation; Stress;
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