全站仪三角高程测量在基坑沉降监测中的应用

Application of Total Station Triangulation Elevation Survey in Foundation Pit Settlement Observation

对于复杂性基坑,因基坑周边环境复杂,支护结构标高差距较大及铟钢尺尺长局限影响,使用传统水准测量方法已无法便捷地获取围护桩顶沉降监测数据。本文提出了采用全站仪三角高程测量进行类似支护结构的沉降监测方法,给出了方法的原理,结合工程对方法的误差进行了分析,并采用传统水准测量及全站仪三角高程测量的实际应用进行了监测数据对比分析,两种监测方法监测数据对比分析表明:全站仪三角高程测量及常规水准测量监测结果其变化趋势一致且两者监测数据差值较小,全站仪三角高程测量方法满足基坑沉降监测需求,可以有效地、较精确地测量复杂性基坑。

For the complex foundation pit,due to the complex surrounding environment of the foundation pit,the large difference in the elevation of the supporting structure and the limitation of the length of the indium steel ruler,the traditional leveling method has been unable to conveniently obtain the monitoring data of the settlement of the top of the retaining pile.This paper puts forward a settlement monitoring method similar to the supporting structure using total station trigonometric leveling,gives the principle of the method,analyzes the error of the method in combination with the project,and compares and analyzes the monitoring data using traditional leveling and the actual application of total station trigonometric leveling,the comparative analysis of the monitoring data of the two monitoring methods shows that the change trend of the total station trigonometric leveling and the conventional leveling monitoring results is consistent,and the difference between the two monitoring data is small.The total station trigonometric leveling method meets the needs of foundation pit settlement monitoring,and can effectively and accurately measure complex foundation pits.