Butt joint device and butt joint method of large section steel truss girder
A technology of docking device and steel truss girder, which is applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of large reaction force at the front fulcrum, large axial deformation, and inability to directly connect large-section steel truss girder, etc. Achieving the effect of quick docking construction, improving utilization rate and improving erection efficiency
Active Publication Date: 2021-06-29
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Problems solved by technology
However, when the long-span cable-stayed bridge is erected as a whole with large-segment steel truss girders, since the large-segment steel truss girders have formed a self-heavy and stable structure, the reaction force of the front fulcrum at the crane station is huge, resulting in the The position of the butt joint between the large section steel truss girder and the steel truss girder to be erected is relatively deformed in the vertical and axial directions. segmental steel truss
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[0052] see Figure 1~3 As shown, the embodiment of the present invention provides a butt joint device for large-segment steel truss girders, which is used for butt jointing two large-segment steel truss girders, and defines two large-segment steel truss girders as erected beam segment A And the beam section B to be erected; the large section steel truss beam includes:
[0053] Several groups of string beam units 1 arranged at intervals in parallel, each string string unit 1 includes an upper string 11, a lower string 12, at least one vertical rod 13 connected to the upper string 11 and the lower string 12, and two The docking rod 140 outside the vertical rod 13;
[0054]A plurality of large crossbeams 2, at least two large crossbeams 2 are arranged between every two adjacent upper chords 11, and two described large crossbeams 2 are respectively arranged at two ends of the two described upper chords 11, to be erected The large beam 2 in the beam section B is set opposite to t...
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The invention discloses a butt joint device of a large-section steel truss beam, which is used for butt-jointing a beam section that has been erected and a beam section to be erected; Beam; the docking device includes: the first pair of pulling mechanisms, one end of which is connected to a large beam in the beam section to be erected, and the other end is connected to the corresponding large beam in the beam section that has been erected; A large crossbeam of the section is close to the corresponding large crossbeam in the erected beam section; the two ends of the second pair of pulling mechanisms are respectively arranged in the middle of the erected beam section and the beam section to be erected; The pair of connecting rods in the beam section to be erected approaches the corresponding docking rod in the erected beam section; the jacking mechanism includes a jacking device; the jacking device is arranged on the upper chord of the beam section to be erected, and the top is fixed; when the jacking device lifts up , the beam section to be erected is pressed down. The invention effectively adjusts the relative deformation between the erected beam section and the beam section to be erected, and realizes the butt joint of large section steel truss beams.
Description
technical field [0001] The invention relates to the technical field of butt jointing of steel truss girders, in particular to a butt joint device and method for large-segment steel truss girders. Background technique [0002] With the rapid development of economy and technological innovation, the span of bridges in transportation construction is gradually becoming longer. Most long-span bridges are cable-stayed bridges, and for cable-stayed bridges, especially heavy-duty cable-stayed bridges for road and rail, compared with solid web beams, steel truss girders can reduce their own weight and increase rigidity. Better suited for load-bearing structures with larger spans. [0003] The installation of steel truss girders is mostly realized through the butt joint of multiple segmental steel truss girders. In the prior art, a conventional butt joint method is to set up a temporary platform under the docking area, and set the steel truss to be erected on the temporary platform. ...
Claims
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 邹冠胡杰张文斌许佳平毛玮琦涂满明李军堂姚森胡勇崔一兵陈涛朱云萍耿豪姜江华贾维君
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD