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Erecting method for last three-span box girders in railway bridging

A box girder, the final technology, applied in the field of bridge construction, can solve the problems of no increase in erection speed, high labor intensity, and reduced efficiency of box girder erection

Active Publication Date: 2013-07-10
中铁十七局集团第三工程有限公司
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  • Abstract
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Problems solved by technology

[0010] Disadvantages of the above method of erecting the box girder: using the traditional construction method to erect the last three-hole box girder needs to be turned back and forth 5 times for the rear outriggers, the wheel set walking platform and the back and forth twitching of the beam guide machine, and it takes about 3 days to erect the last three-hole box girder , the labor intensity of the whole erection process is high, and the erection speed has not been increased, thus reducing the erection efficiency of the box girder

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  • Erecting method for last three-span box girders in railway bridging

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Embodiment Construction

[0024] The invention specifically relates to a method for erecting the last three-hole box girder in railway bridge erection. The equipment used in the method is a frame-transporting integrated bridge erecting machine, which is composed of a lifting beam machine and a guide The beam machine consists of two parts, as attached Figure 1-3 shown. The beam lifting machine is mainly composed of: front wheel set 8, rear wheel set 1, saddle beam, power system, hydraulic system, hoisting system 2, main beam, buffer oil cylinder, steering oil cylinder, and pallet 9; among them, the hoisting system 2 Including rear auxiliary winch 3, rear spreader 4, main beam 5, front spreader 6, front auxiliary winch 7; beam guide machine mainly consists of: carrying beam trolley 14, shifting platform 16, mobile ladder, rear outrigger 15. The front roller support leg 19, the middle roller support leg 18, the rear roller support leg 17, the guide beam 21, the guide beam tie rod 12, and the overlapping...

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Abstract

The invention discloses an erecting method for last three-span box girders in railway bridging, and belongs to the technical field of bridge construction. In the method, processes including taking box girders from a girder fabrication yard, connecting and erecting the box girders, drawing nose girders forwards, (drawing the nose girders backwards and drawing the nose girders forwards), and laying down the box girders are adopted. On the premise that bearing force situations and stability of each part of the bridge are guaranteed, labor force is greatly reduced and erecting speed is increased.

Description

technical field [0001] The invention relates to a method for erecting large-scale box girders in bridge engineering, belonging to the technical field of bridge construction, in particular to a method for erecting the last three-hole box girder in railway bridge erection. Background technique [0002] With the rapid and steady development of my country's infrastructure, China's railways have entered a stage of leapfrog development. Since the railway construction belongs to infrastructure construction, the state has invested heavily, and it also faces many problems during the construction process, such as high construction costs. In terms of railway construction, one of the key issues that needs to be solved first is how to meet the growing demand with lower construction costs, higher construction efficiency, and high-quality completion of construction goals. [0003] At present, in the construction process of railway bridges, large concrete box girders are important componen...

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Application Information

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IPC IPC(8): E01D21/00
Inventor 乐锋魏文柱景俊锋郭宏坤曹会芹张卫国薛国虎袁俊青
Owner 中铁十七局集团第三工程有限公司
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