Performance Evaluation of Reinforced Concrete Roadbed for Slab Track on Clay Subgrade

Autor:	Takatada Takahashi, Osamu Maruyama, Etsuo Sekine, Yoshitsugu Momoya
Rok vydání:	2009
Předmět:	business.industry Settlement (structural) Mechanical Engineering Structural engineering Subgrade Deformation (meteorology) Track (rail transport) Finite element method Vibration Slab Geotechnical engineering Bearing capacity business Geology
Zdroj:	Quarterly Report of RTRI. 50:110-115
ISSN:	1880-1765 0033-9008
Popis:	A high bearing capacity for subgrade is essential to avoid excessive settlement in constructing slab tracks on earth structures. However, a soft diluvial clay layer was detected on part of a Tohoku-Shinkansen line under planning adjacent to the local town of Shichinohe. To address the problem, a double-line-integrated reinforced concrete roadbed was developed. We carried out detailed ground investigations to evaluate the performance of the concrete roadbed on the soft diluvial clay on which the slab track is to be constructed. We further carried out on-site cyclic loading tests involving the application of a vibration machine. Based on the results of these investigations and tests, we carried out FEM analysis to evaluate the deformation characteristics of the concrete roadbed. The results of the FEM analysis clarified that the double-line-integrated reinforced concrete roadbed was able to appropriately support slab track on the soft diluvial clay subgrade.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d38b2fd87331a4d22a07ea4223c09540 https://doi.org/10.2219/rtriqr.50.110 Zobrazit plný text záznamu