Method for mounting prestressed T-shaped girder at sea by non-rotating synchronous hoisting of double cranes

Abstract

The invention discloses a method for mounting a prestressed T-shaped girder at sea by non-rotating synchronous hoisting of double cranes. Firstly, two crawler cranes are fixed on a deck of a square barge, a non-rotating synchronous hoisting process is used to take and mount the T-shaped girder, and during the hoisting and mounting process, the mounting position of the T-shaped girder is controlledonly by raising and lowering crane jibs and by adjusting the hoisting distance, so that potential construction safety hazards can be effectively reduced; secondly, two elevating-type track translational vehicles and girder storage pedestals are arranged on the deck and used to complete the transport and storage of the T-shaped girder on the deck; and finally, a total of four windlasses are arranged respectively at the left front, front right, back left and back right parts of the square barge, and two winches are mounted at the positions, on one side of the square barge, corresponding to thetwo crawler cranes, so as to achieve the stability and accurate positioning of the square barge during the process of taking and mounting the T-shaped girder. By field practice, the method for mounting the prestressed T-shaped girder at sea by non-rotating synchronous hoisting of the double cranes is safe, achieves controllable quality, can effectively reduce the construction cost and improve theconstruction efficiency, and can be promoted for being used in similar projects.

Description

technical field [0001] The invention relates to a method for installing a prestressed T-beam on the sea with non-rotating synchronous double lifting cranes. Background technique [0002] Prestressed T-beams are generally installed at sea, and crane ships are generally used, and additional barges are required for T-beam transportation. In the actual construction process, if the resources of crane ships are scarce or the rental costs of crane ships are high, the construction efficiency will be seriously affected . Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a method for installing prestressed T-beams at sea with non-rotating synchronous double-lift cranes, which realizes the whole process of prestressed T-beams from loading, transportation to installation, and saves construction costs , to ensure the construction efficiency. [0004] In order to achieve the above object, a method for in...

AI Technical Summary

Problems solved by technology

[0002] Prestressed T-beams are generally installed at sea, and crane ships are generally used. At the same time, additional barges are required for T-beam transportation. In the actual construction process, if the resources of crane ships are scarce or the rental costs of crane ships are high, the construction efficiency will be seriously affected.

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