Coordinate Calculation of Easement Curve Center and Side Stakes Using VB;

A constrained optimization method for deciding easement curve length in the raising operation speed of the existing railway;

Accuracy analysis of coordinating calculation of easement curve;

Research on characters and calculation of arc length about parallel sidelines of spiral curve;

The method of round or adjustment curve suruey and design is laying geometer out the angle bisector according to cosine the ormern.

On basis of the features of the center line of the railway alignment,the author describes the methods of calculation and treatment of the lateral movement of the adjustment curves and the center line of the railway alignment at curved section,placing emphasis on the derivation of the calculation formula of the transition of the curves.

On the basis of the study of the chevron alignment sign home and abroad, the placing of chevron alignment sign is discussed by the method of tangential protrusion in distance on rural high-level road with adjustment curve.