The concept of spiral line development (SLD) is introduced at first in this paper, then the design idea of SLD is discussed, and the characteristics and patterns of SLP are summarized. According to the terrain adaptability and linear continuity requirements of SLP, rationality of the SLD applied in the high-grade highways in mountain areas are analyzed from the aspects of technology, safety, economy and environmental protection. The results show that SLD is a better decision in the case of the limitation of topographic and geological conditions, too large height difference between the two control points, no natural line development conditions, and the reverse loop development dissatisfying the requirements of high-grade highways index.
A Study on the Spiral Line Development Applied in the High-Grade Highways Design
2013
5 Seiten
Aufsatz (Konferenz)
Englisch
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