CPⅢ复测中约束点选取方法的研究和应用

Research and Application of the Method of Constraint PointsSelecting in CPⅢ Retest

首先介绍了CPⅢ技术在城市轨道建设中的应用和现阶段的CPⅢ复测方法,指出现有CPⅢ复测方法存在条件受限无法联测原测约束点时容易造成复测成果不合格的问题。为了解决该问题,本文提出了一种新的约束点选取方法并将其应用在了工程实际中,结果表明:该方法能够满足CPⅢ复测要求,且相较于现有方法有更强的环境适应能力。

Firstly,this paper introduced the application of CPⅢin urban rail construction and the current CPⅢretesting method,then pointed out that the current CPⅢretesting method has limited conditions and cannot jointly measure the constraint points of the original measurement,which will easily lead to unqualified retest results.In order to solve this problem,this paper proposes a new method to select constraint points and applies it in practice.The result shows that this method can meet the requirements of CPⅢretesting and has stronger environmental adaptability.