摘要
DESIGNOFINTERCHANGERAMPALIGNMENTWITHBLOCK-BUILDINGMETHODLiFang(李方)(DelsoxtmentofCommunication&.TraiisportationEngineering)DES...
This paper presents a block-building method for the alignment design ofinterchange rampe.Giving starting coprdinates and direction, an ideal alignment isbuilt up by choosing desirable type and argunient of one of the three basic buildingbleeks:tangent,arc and spiral.In addition,with the hereafter provided calculationdiagrains and prograni package,the interchange aligrmient drawing and layout draw-ing can be acquired aseily.