도로선형설계에서 완화곡선의 효율적인 이용 MODEL - 도시가로 및 지방도를 중심으로 - = The efficient usage model of Transition Curve in designing Road Alignment

다국어 초록 (Multilingual Abstract)

Now, at the transition part the cubic parabola of old models is mainly used at the design of railway and clothoid curve is mainly used at the design of highway. But, it is difficult to use the clothoid curve in planning street or highway and it is rejected nowdays because of several confinement.
So, the object of this study is to propose the efficient and easy model to use at the transition curve, and then to suggest it's usage,
The result of this study are as follows.
1. The result of analysis about the danger of superelevation of design speed and running speed acording to the speed and the curve radius show that most part are dangerous, and the diggerence of value is 24.6% when a car is running by the speed of 90km/hr of which design speed is 60km/hr.
2. The currently used transition curve is used to be equal with the cubic parabola and clothoid curve at the B.B.C. but the bigger the tangent angle is the bigger the difference between the R' of B.C.C. and the R of circular curve.
3. In this study, the result of analysis of efficint and easy model to use at transition curve are as follows, Hoffman and Schramm's horizontal alignment, elliptic equation, non-linear mutiple regression model. After thorough examination, the non-linear mutiple regression model is decided as the most efficient model.

목차 (Table of Contents)

• 목차
• ABSTRACT
• Ⅰ. 서론
• Ⅱ. 이론적 배경
• Ⅲ. 완화곡선의 비교·분석
• Ⅳ. 모델식의 검토 및 제안
• Ⅴ. 결론
• 참고문헌