Novel prefabricated box girder loading operation method

Abstract

The invention discloses a novel prefabricated box girder loading operation method, used devices comprise a fixed girder platform, a girder loading trolley, a girder carrying machine, a girder transporting vehicle, a jacking device, a front girder carrying trolley and a rear girder carrying trolley, and the novel prefabricated box girder loading operation method comprises the specific steps that firstly, the fixed girder platform and the girder loading trolley are arranged in the girder loading platform according to the specification of a box girder; secondly, the girder carrying machine carries the multiple box girders to the girder loading platform position; 3, aligning the girder transporting vehicle with the girder loading platform, and enabling the rear beam carrying trolley to replace the fixed girder platform for bearing; 4, when the girder transporting vehicle moves the box girder into the frame, enabling the front beam carrying trolley to replace the girder loading trolley for bearing through a jacking device after the rear beam transporting vehicle is limited; and fifthly, the box girder is completely moved into the frame through the girder transporting vehicle, and girder loading is completed. According to the method, old equipment is activated, idling and scrapping are avoided, meanwhile, the utilization rate of the beam carrying machine is remarkably increased, the hoisting operation risk is reduced, the beam field planning pressure is relieved, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a novel prefabricated box girder installation method. Background technique [0002] At present, with the continuous emergence of tunnel beam transport conditions, low-level and ultra-low beam transport vehicles have been put into use, but the low-level beam transport vehicles and ultra-low beam transport vehicles are designed to have the same bearing capacity due to the reduction in vehicle height. The car body needs to be designed to be lengthened (the length of the car is generally 42-47 meters). Taking the construction of the 900-ton box girder erection of the high-speed rail as an example (not involving the frame beam integrated with the frame), at least three types of mechanical equipment are required for supporting construction, each of which is 900 tons Handling beam machine, 900-ton beam truck and 900-ton bridge erecting machine. The general process is that t...

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Problems solved by technology

However, the single-girder single-door beam handling machine has a limited span (generally 37-39 meters), so it cannot be loaded on a low-level beam transporter or an ultra-low beam transporter.

In the working conditions equipped with low-level beam transport vehicles or ultra-low beam transport vehicles, it is necessary to configure single-beam double-door or double-beam double-door beam handling machines, resulting in the company’s single-beam single-door beam handling machines being idle. Or procurement to meet the needs will greatly increase the construction cost of the enterprise. The above phenomenon is mainly due to the inability to use new and old equipment in the field of high-speed rail bridge erection construction

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