Integral erection construction method of 60m steel box girder
A construction method and technology of steel box girders, applied in bridge construction, erection/assembly of bridges, bridges, etc., can solve problems such as high safety and quality risks, inability to meet the requirements of large crane construction sites, and large welding workload. Achieve the effects of reducing assembly and welding procedures, facilitating the organization of flow construction, and ensuring quality and safety
A construction method and technology of steel box girders, applied in bridge construction, erection/assembly of bridges, bridges, etc., can solve problems such as high safety and quality risks, inability to meet the requirements of large crane construction sites, and large welding workload. Achieve the effects of reducing assembly and welding procedures, facilitating the organization of flow construction, and ensuring quality and safety
CN102797226AActive Publication Date: 2012-11-28CHINA RAILWAY SIXTH GRP CO LTD
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[0099] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.
[0100] The construction method of the overall erection of 60m steel box girder is carried out by using the fasting box-shaped double-girder bridge erecting machine. Hole construction preparation â bridge erecting machine passing the hole â bridge erecting frame girder construction preparation â bridge erecting frame girder â cross connection welding between boxes â bridge erecting machine dismantling, such as figure 1 shown.
[0101] Taking the project described in the background technology as an example, the specific steps are as follows:
[0102] 1. Construction of temporary buttresses in the mid-span of steel box girders
[0103] Since the 60m steel box girder is a steel-concrete composite girder, the joint force can only be exerted after the concrete pouring of the bridge deck is completed. Therefore, when the steel box girder is erected by a...
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The invention belongs to the technical field of the construction of large bridge bodies, and specifically relates to an integral erection construction method of a 60m steel box girder, which reduces the influence of the construction of long-span steel box girders to communications and transportation and surrounding structures. The method comprises the following steps of: midspan construction of temporary pillar of steel box girder, steel box girder assembling manufacturing, bridge girder erection machine assembling and checking, hole passing of the bridge girder erection machine, preparation for girder erection of the bridge girder erection machine girder and girder erection, transverse welding among boxes, and bridge girder erection machine dismantling. In the method, a hollow box-shaped double-beam bridge girder erection machine is used for carrying out the construction of the steel box girder so as to efficiently solve the construction problem that the 60m and 230t steel box girder simultaneously spans over railways and roads; and the method ensures the operation safety of the conventional railways and national roads and minimizes the influence of the construction to railways and national roads.
Description
technical field [0001] The invention belongs to the technical field of installation and construction of large bridge girders, and in particular relates to a construction method for the integral erection of a 60-meter steel box girder. 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 substantial growth; at the same time, due to the complexit...
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Patent Timeline
28 Nov 2012
Publication
CN102797226A
- IPC
- E01D21/06
- Inventors
- éææ°; ææ°žæž