Technical gazette, Vol. 23 No. 1, 2016.
Professional paper
https://doi.org/10.17559/TV-20140217144435
Transrapid and the transition curve as sinusoid
Atınç Pirti
orcid.org/0000-0001-9197-3411
; Yildiz Technical University, Faculty of Civil Engineering, Department of Surveying Engineering, Davutpaşa/Esenler, İstanbul, Turkey
Mehmet Ali Yücel
; Canakkale Onsekiz Mart University, Faculty of Engineering and Architecture, Department of Geomatic Engineering, Canakkale, Turkey
Taylan Ocalan
; Yildiz Technical University, Faculty of Civil Engineering, Department of Surveying Engineering, Davutpaşa/Esenler, İstanbul, Turkey
Abstract
The transition curves in the modern highway and railway construction are route elements equally crucial as alignment and curve (circular). In order to prevent a sudden change of the centrifugal force, the transition curve must be applied due to the impact of the motion in a sharp curve. Over the years the application of the clothoid has become widespread in many countries in the world. However, in this study, in order to eliminate the problems concerning the road dynamics, created by clothoid for vehicles at high speed, sinusoid is examined. The possibility of using sinusoid in defining transition curves during design of transportation facilities is analysed in this paper. Basic properties of sinusoid, their fundamental mathematical expression, calculation of point coordinates, driving-dynamic characteristics of sinusoid are described (especially for Transrapid using), and the function of change in curvature and lateral impact along the sinusoid is presented. Sinusoid is dealt with as ideal curvature diagram which has curve and superelevation ramp in the articles.
Keywords
clothoid; sinusoid; transition curves; transrapid
Hrčak ID:
153186
URI
Publication date:
19.2.2016.
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