Construction method of railway steel truss girder T-shaped stiffening rib orthotropic slab bridge deck
An orthotropic plate and construction method technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of low construction efficiency, guarantee, and laboriousness of the bridge deck steel plate segments to penetrate the beams, so as to achieve easy welding quality and improved quality. The effect of construction efficiency
Active Publication Date: 2010-09-01
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology
Since the construction can only be carried out section by section in the air, and it is very laborious to penetrate the bridge deck steel plate sections into the beams, this method has the disadvantages of low construction efficiency, and the construction quality is not easy to be guaranteed
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] The construction method of the railway steel truss girder T-shaped stiffener orthotropic slab deck of the present invention comprises the following steps:
[0016] ①Refer to figure 1 , welding T-shaped stiffeners 11 and longitudinal girders 12 to the bridge deck steel plate 10 to form bridge deck steel plate segments;
[0017] ②Refer to figure 2 with image 3 , two beams 20 are penetrated into the bridge deck steel plate segment and welded with it to form an integral beam segment; refer to figure 2 , since the two beams 20 can respectively penetrate from the longitudinal end of the bridge deck steel plate segment, the difficulty of construction can be reduced.
[0018] ③ The integral beam section is hoisted in place, and the beam 20 is bolted to the lower chord of the main truss of the bridge to complete the installation of an integral beam...
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The invention discloses a construction method of railway steel truss girder T-shaped stiffening rib orthotropic slab bridge deck, aiming to improve construction efficiency of the bridge deck and obtain more ensured construction quality. The method comprises the following steps: 1. welding the T-shaped stiffening rib (11), a longeron (12) on a bridge deck steel plate (10) to form bridge deck steelplate sections; 2. inserting two beams (20) into the bridge deck steel plate sections and welding the beams with the steel plate sections to form an integral beam section; 3. hoisting the integral beam section to a preset position, bolting the beams (20) and lower chord of the steel truss girder to finish installation of the integral beam section. The invention has the beneficial effect that as assembly of the integral beam section is completed in site, assembly and welding quality can be more easily ensured; in addition, the integral beam section is hoisted to the steel truss girder to assemble bridge deck plates, so that construction efficiency of the bridge deck can be obviously improved.
Description
technical field [0001] The invention relates to a railway bridge, in particular to a construction method for a steel truss girder T-shaped stiffener orthotropic slab deck. Background technique [0002] The orthotropic slabs of highway and railway steel truss girders are mostly U-shaped stiffeners, and the construction method is relatively simple. Laying, but the U-shaped stiffener can only be welded on one side, which requires very strict welding process, and the welding part is prone to fatigue damage. T-shaped stiffeners can be welded on both sides, which solves the aforementioned problems of U-shaped stiffeners, but T-shaped stiffeners are relatively difficult to construct. [0003] At present, the construction method adopted by the T-shaped stiffener orthotropic slab deck is carried out according to the following steps: ① Process the deck steel plate segments on the site, that is, T-shaped stiffeners and longitudinal girders are welded on the bridge deck steel plate; ② ...
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IPC IPC(8): E01D19/12E01D21/00
Inventor 杨咏漪陈克坚吴玉芬秦小林魏永幸朱敏任杰
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD