CCTV主楼施工全过程桩筏基础沉降监测技术  

Settlement Monitoring Technique for CCTV Main Tower during Construction

作　　者：潘宠平[1] 赵晓花[1] 刘军进 彭明祥[2] 陈振明[2] 余渊[2] 王磊[2] 

机构地区：[1]中国建筑科学研究院,北京100013 [2]中国建筑股份有限公司,北京100000

出　　处：《建筑科学》2009年第11期78-81,98,共5页Building Science

基　　金：国家科技支撑计划资助(2006BAJ01B04)

摘　　要：中央电视台CCTV主楼两个塔身双向倾斜、高位超大悬臂的建筑造型特征使得结构根部产生显著倾覆弯矩,并产生基础不均匀沉降。为保证施工方案的顺利实施并监控基础的安全性,采用静力水准方法每日监测关键测控点的相对沉降;并用光学水准对整个基础沉降进行定期、全面测量。两种监测方法有机结合,有效和准确地反映了基础沉降变化过程及基础变形规律,施工期间整个基础沉降量小、两个塔身基础倾斜值在规范限值范围内。The significant overturning moment would be caused at the bottom of CCTV main tower structure due to the unique architecture appearance, two bidirectional leaning towers and a huge cantilever at the top. Differential settlement of the foundation would be caused by the moment. To secure the safety of the foundation and the construction process, settlement monitoring is essential. Hydro-static and optical leveling surveying methods were used, the former for monitoring the relative settlement at the key points every day, and the latter for monitoring total settlement periodically. Two methods combined closely, monitoring results can be achieved effectively and accurately. It showed that the foundation settlement was small and the inclination settlement of foundation under the two sub-towers was lower than the limit of the specification.

关 键 词：沉降监测 沉降差 水准测量 静力水准 

分 类 号：TU196.2[建筑科学—建筑理论] TU441.6