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Construction method for erecting steel truss girder on uplift pushing tow

A construction method and technology of steel truss girders, applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems of large deflection of steel truss girders, large internal stress of steel truss girders, etc., and achieve reliable fixing effect

Inactive Publication Date: 2009-10-21
RAILWAY NO 10 ENG GRP CO LTD
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  • Abstract
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Problems solved by technology

[0004] Therefore, in order to overcome the above-mentioned defects of the prior art, the present invention provides a construction method for erecting steel truss girders with short construction period, convenient operation, short sailing time, and low cost of erecting steel truss girders, and solves the problem of Excessive deflection of steel truss girder and excessive internal stress of steel truss girder during jacking construction

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  • Construction method for erecting steel truss girder on uplift pushing tow
  • Construction method for erecting steel truss girder on uplift pushing tow
  • Construction method for erecting steel truss girder on uplift pushing tow

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Embodiment Construction

[0039] The technical solution of the present invention will be described as an example below, and the protection scope of the present invention is not specifically limited.

[0040] Refer to the attached Figures 1 to 4 , a construction method for erecting steel truss girders by means of floating supports and pushing, comprising the following steps:

[0041] 1) a. Erecting frame, the pier 1 along the bank uses the standard military girder as the construction convenience beam 2 to the first main pier 7 located in the waterline 6, as a platform for the steel truss girder 3 to be assembled and pushed;

[0042] b. glideway is laid, vertically and evenly lay crossties 13 horizontally on the described construction beam, and the steel rail 11 as glideway is arranged left and right symmetrically above the sleepers;

[0043] c. assemble steel trusses, assemble steel truss beams on the frame;

[0044] d. The upper slideway is set, and the upper slideway matching the steel rail is arra...

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Abstract

The invention discloses a construction method for erecting a steel truss girder. In the technical proposal of the invention, a buoyancy tank group serves as a carrier for levitation support; buoyancy tanks in the central part thereof are used to fill or drain water to ballast water to adjust elevation in a convenient manner; in addition, the proposal of using pushing tow construction is adopted, so that the steel truss girder can be assembled on a falsework on the spot in a convenient manner, hoisting of members is convenient and construction safety is high; the invention provides a construction method for erecting steel truss girder on uplift pushing tow, which features short construction cycle, convenient operation, short navigation closure period and low cost of erecting the steel truss girder and solves the problems that in the construction of the pushing tow, deflection of the steel truss girder is overlarge and internal stress of the steel truss girder is also overlarge.

Description

(1) Technical field [0001] The invention relates to a construction method for erecting steel truss girders, in particular to a construction method suitable for erecting large-span steel truss girders spanning rivers with a water depth of more than 2m. (2) Background technology [0002] When erecting steel truss girders across rivers, the float-over method is usually adopted, that is, a floating tugboat is used to support the front end of the steel truss girder, and a traction system is set in front to drag the steel truss girder longitudinally. This method needs to set more steel wire ropes across the river and corresponding pulley blocks, the construction is very cumbersome, there are many operation links, and it is difficult to command and dispatch. [0003] China Intellectual Property Office No. 200710133927 invention patent application discloses a steel truss girder construction method based on the use of a steel structure central tower column and cable-stayed cables com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 汤德强隋永兴陈汉衡张云昭张维超林定权孙延琳覃继华张海霞
Owner RAILWAY NO 10 ENG GRP CO LTD
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