A kind of overall turning method of steel cable tower
A steel cable tower and integral technology, which is applied in the field of overall turning of the steel cable tower, can solve the problems of construction safety threats, large changes in the position of the center of gravity of the steel cable tower, overload, etc., and achieve the effect of improving stability and safety.
Active Publication Date: 2018-12-14
WUCHUAN HEAVY ENG
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Problems solved by technology
[0004] This application provides a method for turning over the cable tower as a whole, which solves the problem that the conventional turning method used in the prior art to turn over the cable tower will cause a large change in the position of the center of gravity of the cable tower, and may cause overload during the turning process. Technical issues that pose potential threats to construction safety
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[0024] The embodiment of the present application provides an overall turnover method for the cable tower, which solves the problem that the conventional turnover method used in the prior art to turn over the cable tower will cause a large change in the position of the center of gravity of the cable tower, and may occur during the turnover process. Overloading, technical problems that pose a potential threat to construction safety.
[0025] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:
[0026] By determining the tower head fulcrum and the tower tail fulcrum when turning over according to the steel cable tower, and setting a frame-shaped hanger at the tower head fulcrum, the 0-90 degrees, 90-180 degrees, so as to ensure that the height of the center of gravity of the cable tower remains basically unchanged during the turning process, thereby improving the stability and ...
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The invention discloses a method for integrally overturning a steel rope tower. The method comprises the steps of determining a tower head supporting point and a tower tail supporting point of the steel rope tower; arranging a frame-shaped hanging bracket at the position of the tower head supporting point of the steel rope tower, arranging cushion beams on two L-shaped hanging brackets, and hanging the steel rope tower to the frame-shaped hanging bracket and the tower tail supporting point to be supported on the two L-shaped hanging brackets respectively; fixing the two ends of the L-shaped hanging brackets to a gantry crane, and performing overturning through 90 degrees; placing the steel rope tower on a temporary storage support, removing connection of the steel rope tower, the cushion beams and the L-shaped hanging brackets, and using the gantry crane to move the L-shaped hanging brackets out; replacing the cushion beams of the L-shaped hanging brackets, and placing the steel rope tower again on the L-shaped hanging brackets, continuing to perform overturning through 90 degrees, and completing the overturning. The tower head supporting point and the tower tail supporting point during the overturning are determined according to the steel rope tower, the frame-shaped hanging bracket is arranged at the position of the tower head supporting point, the steel rope tower is placed on the L-shaped hanging brackets provided with the cushion beams to be overturned; in the overturning process, the gravity center height is substantially kept unchanged, and the steel rope tower overturning stability and safety are improved.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for integral turning over of a steel cable tower. Background technique [0002] The Hong Kong-Zhuhai-Macau Bridge is a cable-stayed bridge with a central parallel single-cable plane and a three-tower steel box girder, and the cable towers are "dolphin"-shaped steel cable towers. Restricted by the environment of the on-site hoisting conditions, it is necessary to turn over 180°, so that the auxiliary tower is lowered and the main tower is upper for transportation and hoisting. [0003] The steel cable tower weighs 2560t and has an overall size of 19m×20m×105m, including the main tower, auxiliary tower and decorative blocks. The conventional turn-over method will cause a large change in the position of the center of gravity of the steel cable tower, and overload may occur during the turn-over process, which poses a potential threat to construction safety. Co...
Claims
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 阮家顺祝李元郑慧张虎陈望民向晋华陈家菊李立明
Owner WUCHUAN HEAVY ENG