摘要
主要描述了西安地铁二号线车站基坑围护结构桩顶水平位移监测的技术方案,结合基准线法和测小角法测定水平位移,并对实际角度观测进行了误差分析,探讨了地铁围护结构桩顶水平位移监测的观测点坐标对中误差,推导出了采用不同精度的测角仪器观测水平角所需的测回数。
The technical solutions of horizontal displacement monitoring of pile cap in subway surrounding protection structure in Xi＇an is introduced.Combined with the horizontal displacement monitored by small angel measuring method with baseline method and the error analysis of angle observation,the coordinate＇s RMS error of observed points of horizontal displacement monitoring of pile cap is discussed. Then,the measurement times by kinds of different precision angle measuring instruments is deduced.
出处
《土工基础》
2010年第3期46-48,共3页
Soil Engineering and Foundation
关键词
围护结构桩顶
水平位移
精度分析
pile cap of surrounding protection structure
horizontal displacement
accuracy analysis
