无砟轨道基桩控制网测量技术探讨

轨道的高平顺性是客运专线无砟轨道最突出的特点之一。因此,需要建立高精度的铺轨基桩控制网。基桩控制网通常是按五等导线测量的方法进行布设,本文提出在导线基础上采用边角后方交会法来加密,通过运用原始数据误差理论和仿真实验的方法对无砟轨道控制基桩网的新旧两种测量技术进行对比,结果显示:采用边角后方交会法加密的控制网将得到更高的相对点位精度,具有更好的平顺性指标。这一结论对我国客运专线无砟轨道施工控制网的建设或许有参考价值。

An approach of survey technique in base-piles control network for ballastless track

Track evenness and straightness with high precision is one of the most predominant features for ballastless track of passenger dedicated railway.So the control networks of foundation pile should be built with high precision.The control networks of foundation pile are measured by the 5-class traverse according to provisional criterion.This paper introduces the principle and method of the side-angle resection in densification of base-piles control network based on traverse.By the simulation tests and theoreti...