道路中线放样新方法探讨

Probe into the New Method of Center Line Setting一out on the Road Construction

传统的路线放样 ,多采用偏角法、切线支距法等。当地形复杂、通视条件不利时 ,放样将非常困难。对于大型曲线桥梁 ,常规的放样方法满足不了精度的要求。本文介绍的直接计算出道路中线平面坐标的方法和道路设计计算程序 ,完全解决了上述问题。经多处实践验证 ,本方法实用可靠 ,精度高 。

The traditional route setting一out mostly uses deflection angle method and tangent off一set method etc.In these methods,setting一out is very difficult when the relief is complex and disadvantageous for the two points to be watched each other.For Large一sized curve bridges,the ordinary setting一out method is unable to meet the demand of accuracy.However,the method of directly calculating the planimetric coordinates of the centre line on the road and the calculating program of road design can completely solve the problems above.The practise proves that the new method is pratical,reliable and more accurate and is suitable for various kinds of setting一outs on road construction and designing calculation of routine.