恪守路线勘测设计规程,灵活运用测量学原理简化测量,是公路测设的基本原则。在公路一次性定测中,因选线常不能一次性满足曲线敷设要求,而致重复测量导线边长及夹角。运用三角点辅助测设,是常见的简便有效方法。它比转点更为灵活,利于减少置仪次数,减轻测角的劳动强度,提高测设速度,并在评定测量误差精度的条件下提高测设精度。 本文运用三角点的测设原理及常用类 Abide by the route survey design rules, flexible use of measurement principles to simplify the measurement is the basic principle of highway layout. In a one-time road test, due to the election line often can not meet the laying requirements of the curve at one time, which led to repeated measurement of wire length and angle. The use of triangulation-assisted test set, is a common simple and effective method. It is more flexible than the turning point, which will help to reduce the number of settings, reduce the labor intensity of angle measurement, improve the measuring speed, and improve the measuring accuracy under the condition of evaluating the measurement error precision. In this paper, the principle of measuring triangulation point and commonly used class