Construction Management Methods for Super High-Rise Buildings: Qingdao Hai Tian, Qingdao
Session: Track D: Construction Award
Chief Engineer, China Construction 8th Engineering Division
Senior Director, AKAIA Architecture
New York City
For the construction of the super high-rise buildings of the Qingdao Haitian Center, several methods were applied for effective and accurate construction. For the core tube construction of the T2 tower, an integrated truss platform-based hydraulic climbing formwork system was adopted. An all-steel variable-angle inclined climbing attached lifting scaffolding system was used for the construction of the e T1 and T3 towers’ construction of the main structures. As a result, the spreaders, steel formworks, construction elevators and others were integrated into a whole system respectively through hydraulic climbing formwork system and the lifting scaffolding system, which solved issues encountered during the construction, such as irregular building shape, insufficient work space at high altitudes and reduced efficiency of vertical transportation, thus tripling the efficiency compared with conventional construction models.
To tackle issues such as limited space at the project site and construction difficulties of a deep foundation pit, the prefabricated steel ramp technology and the Bailey assembly design were applied in the project to solve the transport difficulties during deep foundation pit construction.
The T2 tower is equipped with the world’s first special-shaped asymmetric tuned liquid damper system, which is composed of an RC fire water pool and steel structural members therein. To guarantee its construction accuracy, Leica TCR1201+ total stations were used to monitor the accuracy during the construction, and a professional team that participated in the damper construction of the Shanghai Center was employed to assemble the steel structures on site, in a bid to fully guarantee the actual service effect of the damping poolTo avoid construction conflicts and lower efficiency during the construction due to complicated business forms, the general contracting management system was adopted in the project, enabling the general contractor to control the construction rhythm, coordinating on-site construction issues, and managing the overall situations.
Through the practices in the construction of the Haitian Center, the reliability of collaborative construction for multiple business forms was verified for super high-rise complex projects. Moreover, the successful implementation of the general contracting management system provides a reliable example for this type of construction.