The construction technology and method of the outdoor large Ferris wheel structure should be determined according to the specific structural form and site conditions. At present, the construction methods of the completed Ferris wheel structure can be classified into the following three types.
The outdoor giant Ferris wheel rim steel structure is processed and assembled in sections in the factory. After transporting to the site, the wheel rim is assembled into a whole, and then connected to the internal rigid truss support or flexible steel cable system, and finally, the whole is hoisted into place.
The British "London Eye" adopts this method for construction. The steel tube truss of the wheel rim is divided into 3 sections and processed in the factory. It is transported to the site and assembled into a whole. Then the steel cable inside the wheel rim is installed and tensioned, and the prestress is introduced. Finally, the wheel rim is assembled. After the pan structure and the supporting tower structure form an integral structure, hoisting is carried out.
The ground assembly and overall hoisting method of the outdoor giant Ferris wheel for sale are conducive to the installation of the steel structure, and the installation accuracy is easy to ensure; however, the scale and weight of the Ferris wheel are generally large, so a larger construction site and stronger lifting capacity are required.
The vertical rotation installation method refers to the construction method in which the temporary rigid spokes are used to drive the segmented rims and steel cables to rotate and install after the supporting towers and axles are installed in place.
The vertical rotation installation method is divided into one-side rotation installation method and two-side rotation installation method. It is suitable for the flexible Ferris wheel structure system that relies on steel cables to provide centripetal force. This method has been used in Tianjin Cihai Bridge Ferris wheel structure.
The vertical rotation installation method can avoid a lot of high-altitude operations and has a lower risk, but it requires a large traction power system and a good braking system, especially the two-side rotation installation method also requires special treatment for the center axle of the Ferris wheel.
The center rotation installation method means that after the supporting tower and the axle are installed in place, the tower is used to set up the working platform or the hoisting system is used to install the Ferris wheel structure system from the center to the periphery one by one.
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