CCTV新台址主楼的倾斜变形特性研究

Study on tilt deformation characteristics of the CCTV new headquaters

CCTV新台址主楼的塔楼双向倾斜6°,在自重恒荷载作用下,塔楼向倾斜方向变形。倾斜变形影响测量基准垂直传递的稳定性,导致施工测量存在系统偏差。文中介绍基于测量机器人的塔楼倾斜变形监测过程,分析倾斜变形规律,利用最小二乘拟合法求得塔楼的日变形速度,并根据测量基准垂直传递的限差,通过误差传播定律,确定测量基准合理的检核频率,保证了塔楼的施工测量质量,也可为其它类似的高层建筑施工提供参考。

The towers of the CCTV new headquaters lean 6°off vertical in both directions.Because of self-weight dead loads,towers have deformation in tilt directions.Tilt deformation impacts on stability of vertical transforming of survey datums,which lead to systemic error of construction survey.The paper introduced the mointoring process of tilt deformation of towers using georobot,by analysing the rules of tilt deformation,used method of least square fitting to get the daily velocity of towers,determined reasonable...