Cable maintenance gondola for large-span cable-stayed bridges
A cable-stayed bridge, long-span technology, applied in cable-stayed bridges, bridge maintenance, bridges, etc., can solve problems such as cable-stayed corrosion, and achieve the effects of extending service life, overcoming damage, and reducing maintenance costs.
Inactive Publication Date: 2011-11-09
WUXI COSMO SUSPENDED PLATFORM
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Problems solved by technology
[0004] However, the cable-stayed cables of cable-stayed bridges are the lifeline of such bridges. So far, there have been several cases of opening to traffic at home and abroad. Only in recent years, there have been unfortunate engineering examples where all cables have been replaced due to severe corrosion of the cable-stayed cables.
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Embodiment 1
[0023] A set of cable-stayed crane equipment for cable-stayed bridge steel cables is used for inspection and maintenance of the Shenzhen Bay Highway Bridge.
[0024] In this device, the steel cable bears a force F N =4546N=0.45t, stay cable track span L 1 =202(m), the inclination angle of the cable track α=38°. From this equation, the relationship between the cable tension T and H can be obtained. figure 2 .
[0025] Note that the cable pre-tightening force is not used in (*), therefore, the relationship between the actual final tension T and H of the steel cable has nothing to do with the cable pre-tightening force. For this example, the safe permissible tension of the steel cable is T=3t, and H=6m at this time. Therefore, under the condition of constant load, as long as the vertical height of the hanging basket deviation is H=6m, the cable tension T=3t can be guaranteed, and there is no need to analyze the reasons for the small pre-tightening force, the deformation of t...
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The invention relates to a high-altitude operation device, particularly to a cable maintenance gondola for large-span cable-stayed bridges. The cable maintenance gondola for large-span cable-stayed bridges is composed of a plurality of diagonal tension steel cables, a bridge floor counterweight, a trailer climbout wagon, a hauling cable, a hoister, a safety lock, a gondola load cable, a gondola and the top of a pylon. The invention provides a new method for carrying out cable maintenance on large-span cable-stayed bridges; and in the method, a hanging basket is changed and applied to the maintenance on steel cables for cable-stayed bridges for the first time. The device can freely move forwards and backwards in the horizontal direction and can freely move upwards and downwards in the vertical direction in a large-span cable-stayed bridge, and vehicles for the person carrying and maintenance of the device are completely not in contact with the steel cables of the cable-stayed bridge, thereby overcoming the defects that the maintenance cycle is long and the vehicles for maintenance cause damages on inhaul cables. By using the device, the maintenance operation efficiency can be greatly improved, thereby shortening the maintenance time and greatly lowering the maintenance cost of the large-span cable-stayed bridge. Because of avoiding the damages to the inhaul cable caused by the vehicles for maintenance, the service life of the large-span cable-stayed bridge is prolonged.
Description
technical field [0001] The invention relates to high-altitude operation equipment, in particular to a long-span cable-stayed bridge cable maintenance gondola. Background technique [0002] The current hanging basket is a new type of high-altitude operation equipment that can be reused. It can replace traditional scaffolding, reduce labor intensity, and improve work efficiency. At present, the hanging basket is mainly used in high-altitude operations such as exterior wall construction, curtain wall installation, painting, maintenance and cleaning of high-rise buildings. [0003] The cable-stayed bridge is the most imaginative and conceived connotation and the most eye-catching bridge type today, and it has wide adaptability. Cable-stayed bridges were introduced into my country in the early 1960s. In the 1980s, cable-stayed bridges were rapidly popularized. More than 30 cable-stayed bridges were built across the country with a main span length of 200-300m, such as Jinan Yello...
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IPC IPC(8): E01D22/00E01D19/16E01D11/04
Inventor 谢家学王志华田常录
Owner WUXI COSMO SUSPENDED PLATFORM