改进导线网代替传统闭合导线的精度分析与可靠性探讨

传统闭合导线观测数少、粗差难以得到检验,为克服以上劣势,在闭合导线中,增测部分可联测的边长和角度构成边角网,以增强网的强度。以某特大型桥梁引桥水平位移监测为例,从精度、可靠性对两种网形的平差结果进行了对比分析。结果表明:改进后导线网保证了测量的精度,网形的可靠性较单一闭合导线有了大幅提高,为以后的工程实践提供了借鉴。更多还原

Precision and Reliability Analysis for Replacement of Traditional Closed Traverse with Improved Traverse Net

The traditional closed traverse net has a few observations,and can hardly test the gross errors.In order to overcome these disadvantages above,some extra distances and angles are measured to form a triangulation net for reinforcing the strength of the net.Here,taking the horizontal displacement monitoring for the approach-bridge of a large bridge as an example,the adjustment results of two nets are compared and analyzed from precision and reliability.The results show that the improved traverse net could ensure the measuring accuracy,and the reliability of the net has been greatly improved.All these as mentioned above could provide a reference for future engineering practice.