Steel box girder hoisting and positioning device and construction method
A technology of positioning device and construction method, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of safety and quality hidden dangers, unfavorable circumferential seam welding, inaccurate alignment of steel box beams, etc., to improve construction quality and safety, ease of welding operation, and the effect of avoiding welding operations
Inactive Publication Date: 2019-10-25
CHONGQING COMM CONSTR GRP
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[0004] In order to solve the technical problems of safety and quality hidden dangers in the positioning of the code plate, inaccurate alignment of the steel box girder, and unfavorable technical problems in the welding operation of the circular seam in the prior art, the technical solution of the present invention is as follows:
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[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] Such as figure 1 As shown, the steel box girder hoisting and positioning device in the present invention includes two bases, two positioning seats 2 and a through-hole jack 3 . The base is welded to the connecting sides of the two steel box girders 4 to be connected, preferably, the base is a C-shaped channel steel 1, and the two C-shaped channel steels 1 are arranged in parallel on the connecting sides of the two steel box girders 4, and the C-shaped channel The steel channel 11 of the steel 1 is upward, and the closed surface is welded with the steel box girder 4, wherein the distance betwee...
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The invention discloses a steel box girder hoisting and positioning device and a construction method. The steel box girder hoisting and positioning device comprises two bases, two positioning seats and a through jack. The base is welded to connecting edges of two to-be-connected steel box girders, the positioning seats are detachably connected to the bases through bolts, ducts are formed in opposite faces of the two positioning seats, and a stress rib of the through jack penetrates the ducts to fix the two positioning seats. According to the steel box girder hoisting and positioning device andthe construction method, the two positioning seats are stretched through the through jack to be acted to the bases, so that the bases drive the steel box girders to be aligned precisely. As the basesand the steel box girders have relatively large connecting areas, when the positioning seats are stressed to be drawn close, the integral structure of the bases are drawn cloth to each other, too, sothat the steel box girders are stressed integrally rather than being stressed at a single point, and therefore, the connecting faces of the steel box girders are attached more tightly and aligned more precisely.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a hoisting and positioning device for a steel box girder and a construction method. Background technique [0002] When hoisting a steel structure bridge, the steel box girder to be installed must be precisely aligned with the installed steel box girder in advance, and the two can be connected into a whole by ring welding after the accurate alignment. In order to ensure the welding quality, there must be no relative displacement between the steel box girder to be installed and the installed steel box girder during welding, so temporary alignment and fixing measures must be set between the two. [0003] In the prior art, a commonly used temporary alignment and fixing measure is to intermittently weld positioning code plates between the steel box girder to be installed and the installed steel box girder. There are the following defects in the positioning of the code boa...
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 汪平韩立国李进汪岳健刘骁张春雷魏向松肖双月
Owner CHONGQING COMM CONSTR GRP