摘要
在地铁浅埋暗挖区间隧道开挖期间,曲线段施工测量工作需要通过线路中线以及曲线偏移量计算出缓和曲线和圆线段任一里程的隧道中线坐标。线段隧道中线的测设难度较大,通常采用切线支距法或偏角法测设曲线的点位。隧道中线曲线段坐标的计算相当复杂,将计算公式导入Excel中能更准确、快捷地计算出所需坐标,快速精准地指导隧道开挖工作。
As for construction survey of the curved segment,it needs to calculate the coordinates of tunnel centerline at a certain mileage of transition curve and circular segment according to the centerline and curve offset during tunnel excavation in the shallow tunneling section of subway.Settingout of the tunnel centerline is quite difficult and curve points are generally surveyed by tangent offset or deflection angle method.Calculation approach for coordinates of tunnel centerline in the curved segment is quite complicated.It can calculate the required coordinate in a more accurate and rapid way by importing the formula into Excel,so as to guide the tunnel excavation rapidly and accurately.
作者
王永锋
WANG Yong-feng(BCEG Civil Engineering Co.,Ltd.,100015,Beijing,China)
出处
《建筑技术》
2022年第9期1159-1162,共4页
Architecture Technology
关键词
缓和曲线
圆曲线
弦偏角
隧道中线
线路中线
transition curve
circular curve
chord deflection angle
tunnel centerline
line centerline
