Location
Chicago, Illinois
Date
01 May 2013, 2:00 pm - 4:00 pm
Abstract
The China Central Television (CCTV) New Headquarter is situated in Chaoyang District of Beijing. It consists of two main towers and podiums. The bored piles with diameter of 1200mm and single pile bearing capacity of 11000kN were chosen for the towers. Through the combination of pile-end and shaft grouting, as well as in-situ bearing capacity tests of piles with different pile length, the pile length, the costs and construction difficulties were reduced considerably. Based on the concept of interactions among the superstructure, the foundation raft, the piles and soils, calculations and analysis were carried out on the design of the piles and raft, ensuring the settlements and internal forces be kept at allowable levels. The piles were unevenly distributed below the raft to meet the requirements on settlements, internal forces and tilt control. The maximum thickness of the raft is controlled by the shear strength of the raft. The raft thickness varied from the maximum 7m (Tower 1) and 6m (Tower 2) to the minimum 4.5m.Field monitoring of the settlements, internal forces of raft, reaction forces at pile tops, water and earth pressures etc. was carried out during the construction process. The data of field settlement measurements were then studied.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Wei-dong, Wang; Jiang-bin, Wu; and Qi-ping, Weng, "Foundation Design and Settlement Measurement of CCTV New Headquarter" (2013). International Conference on Case Histories in Geotechnical Engineering. 23.
https://scholarsmine.mst.edu/icchge/7icchge/session01/23
Foundation Design and Settlement Measurement of CCTV New Headquarter
Chicago, Illinois
The China Central Television (CCTV) New Headquarter is situated in Chaoyang District of Beijing. It consists of two main towers and podiums. The bored piles with diameter of 1200mm and single pile bearing capacity of 11000kN were chosen for the towers. Through the combination of pile-end and shaft grouting, as well as in-situ bearing capacity tests of piles with different pile length, the pile length, the costs and construction difficulties were reduced considerably. Based on the concept of interactions among the superstructure, the foundation raft, the piles and soils, calculations and analysis were carried out on the design of the piles and raft, ensuring the settlements and internal forces be kept at allowable levels. The piles were unevenly distributed below the raft to meet the requirements on settlements, internal forces and tilt control. The maximum thickness of the raft is controlled by the shear strength of the raft. The raft thickness varied from the maximum 7m (Tower 1) and 6m (Tower 2) to the minimum 4.5m.Field monitoring of the settlements, internal forces of raft, reaction forces at pile tops, water and earth pressures etc. was carried out during the construction process. The data of field settlement measurements were then studied.
