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Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine

1. The technology of DJ180 and bridge erecting machine is applied in the erection of highway box girders. The DJ180 bridge erecting machine erects large-span highway box girder through holes. The effect of convenience and simple structure

Inactive Publication Date: 2013-12-04
CHINA RAILWAY SIXTH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the DJ180 bridge erecting machine is mainly used for railway girder erection, and road box girders are less involved. Since the weight of small road box girders does not exceed 168 tons and the span is not greater than 40 meters, when using DJ180 bridge erection machine to erect, in the process of passing holes , the span of this bridge erecting machine is too small to be applied

Method used

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  • Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine
  • Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine
  • Perforating method for erecting long-span highway box girders by using DJ180 bridge erecting machine

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specific example 1

[0074] There are 16 girders in a railway bridge project on the Jiexi Line in a certain city, with a span of 40 meters and a maximum weight of 168 tons. In July 2012, the erection of all girders was successfully completed using the DJ180 bridge erecting machine.

example 2

[0076] About 300 meters to the west of a certain bridge, spanning the flood discharge channel of Yongding River, it is divided into two parts, the main road bridge and the south auxiliary road bridge, with a total length of 105 meters. The main road bridge is: 30m+40m+30 (8 pieces per hole) simply supported small box girder. The auxiliary road bridge is: 30m+40m+30m (4 pieces per hole) simply supported small box girder structure. Among them, the 30m prefabricated box girder is 30m long, 2.5m wide, 1.5m high and weighs 101 tons. 40m prefabricated box girder: 40.5m long, 2.5m wide, 1.9m high, and weighs 159 tons. In May 2012, the erection of all girders was successfully completed using the DJ180 bridge erecting machine.

[0077] Benefit analysis of the present invention in actual use:

[0078] The main road of an industrial park spans the overpass of Jiexi Line. The total length of the bridge is 95.3 meters, the span of the bridge is 40 meters, and the maximum weight of the b...

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Abstract

The invention discloses a perforating method for erecting long-span highway box girders by using a DJ180 bridge erecting machine and belongs to the technical field of highway bridge construction. When the erected highway box girders of which the span is 40 meters are perforated, in order to prevent the bridge erecting machine from tilting forward, balance weights need to be added to perforate, and a third pillar is put away when the highway box girders are perforated; before a zero driving machine arm reaches a next pier, front ends of girder bodies are hoisted by using bridge cranes, and then, the zero pillar reaches the next pier by the driving machine arm. After the zero pillar and the third pillar are supported, the balance weights are removed. The perforating method disclosed by the invention mainly aims at a straddle girder erection construction process for small-sized box girders of which the weight is not higher than 168 tons and the span is not bigger than 40 meters, and has the main characteristics that equipment is convenient to dismantle and transport and is convenient to transfer, the assembly cycle is short, the girder erection efficiency is high, the input cost is low, and the like.

Description

technical field [0001] The invention relates to a technology for erecting a highway box girder, which belongs to the technical field of highway bridge construction, in particular to a method for erecting a large-span highway box girder through a hole by a DJ180 bridge erecting machine. Background technique [0002] With the rapid development of my country's iron and steel industry and steel structure technology, the number of steel structure bridges is also increasing. The steel box girder structure has a large span, long service life, high torsional rigidity of the box section, small section height, and good integrity. The characteristics make the steel box girder structure widely used in the design and construction of municipal and highway bridges, and has become the first choice for long-span main girders. Due to the development of bridge technology and the requirements of traffic guidance, the span of urban steel box girders is also increasing, and shows a trend of substa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 侯旭雷陈永刚鄢雨红付强胡正勇鲍立达温立新
Owner CHINA RAILWAY SIXTH GRP CO LTD
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