Shenzhen iCarbonX Building is a super high-rise building known as “Wing Chun Building”. The main purpose of this project is to realize the upgrading of a low-level bridge to connect two super high-rise buildings.
The iCarbonX Building project is located in the Shenzhen Bay Super Headquarters Base. It is the headquarters building of “iCarbonX” in the field of life sciences, with a total construction area of 150,000 square meters and total steel consumption of 12,000 tons.
The two towers are connected by low, medium and high bridges, forming the world’s largest “DNA double helix structure”. It is the first multi-level overlapping hyperbolic articulated special-shaped corridor in China. After completion, it will become one of the most distinctive landmarks in the Greater Bay Area.
The hyperbolic bridge of the project adopts the connection method of pin shaft joints and towers, and the structure is extremely complex, which is an innovation in Chinese architectural design. It is the first time in China that the pin joint is connected between super high-rise towers. The project deepening design team used Revit, Tekla and other 3D modeling software to deepen the corridor model, and simulated and demonstrated the welding, assembly and lifting of the corridor components in advance.
Establish a construction process drill map to greatly reduce safety risks in the construction process. The 3D visualization process control of the whole process directly reflects the deformation of the steel structure in the 3D model, realizes real-time monitoring and timely correction, strictly controls the construction accuracy and optimizes the assembly process.
In order to solve the problems of precision detection of pin joints, bulk assembly in the air, easy deformation of superimposed adjacent components, and difficulty in precision control, the project established a detailed design model and a structural analysis model to calculate the three-dimensional control point coordinates of each component. The installation conditions are simulated by the model, and the three-dimensional coordinates are used for accurate verification to achieve fast, precise, and accurate measurement control.
According to the actual situation of the site, the construction technology, and the location of the yard and the hoisting point, the middle section of the low-level corridor is composed of 120 steel beams and 22 steel columns assembled on the ground.
The method of “partial bulk assembly + partial overall lifting” is adopted, and the ‘‘super-large component hydraulic synchronous lifting process” is used for overall hoisting. The process adopts the new principle of flexible steel strand load-bearing, lifting cylinder cluster, computer control and hydraulic synchronous lifting to realize the overall synchronous lifting of large-tonnage, large-span and large-area super-large components at high altitude.
TorcStark hydraulic intelligent lifting equipment
The project adopts both stroke and displacement sensing monitoring and computer control technology to ensure that the overall lifting of the steel corridor is safe and accurate, and the hoisting error is controlled within 5 mm.