Device for performing incremental launching construction on bridge by using multi-roller sliding ways and construction method thereof
A technology of jacking construction and rolling arrangement, which is applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of affecting the jacking process, difficulty in climbing, and high rigidity requirements for flexible temporary piers, so as to speed up the jacking process. The effect of pushing the construction process, improving the construction efficiency, increasing the support force of the slideway and the resistance to punching shear
Active Publication Date: 2011-05-18
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP +1
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[0006] The purpose of the present invention is to provide a device and a construction method for bridge jacking construction using roller slides, to solve the problem that the existing sliding device is difficult to climb, affects the jacking process, and requires a large rigidity of the flexible temporary support pier technical issues
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[0069] Examples see figure 1 , figure 2 As shown, the device for bridge pushing construction using rolling slides includes a traction part and a sliding part. The traction part includes a jack reaction support 12, a through-hole jack 16, a steel strand 17, and a fixed end clamp Holder 11, steel box girder reaction seat 15, oil pump 5; jack reaction support 12 is fixed on both sides of the proposed position of the steel box girder on the structural pier 6, and the through-hole jack 16 is installed on the jack reaction support 12 , one end of the steel strand is fixed to the through-hole jack 16, and the other end is fixed to the steel box girder reaction seat 15 by the fixed end holder 11, and the steel box girder reaction seat 15 is welded and fixed on both sides of the steel box girder 7 board.
[0070] see figure 1 , figure 2 , Figure 10-18 As shown, the sliding part includes a pair of rolling chute 1 fixed on the structural pier 6 and temporary pier 8, the rolling c...
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The invention discloses a device for performing incremental launching construction on a bridge by using multi-roller sliding ways and a construction method thereof. The device comprises a drawing part and a sliding part, wherein the drawing part comprises jack reaction supports, centre hole jacks, steel stranded wires, fixed end clampers, steel box girder reaction seats and an oil pump; the jack reaction supports are fixed on two sides at a predetermined position of a steel box girder of a structural pier; the centre hole jacks are arranged on the jack reaction supports; one end of each steelstranded wire is fixed with corresponding centre hole jack, while the other end is fixed on the corresponding steel box girder reaction seat through the corresponding fixed end clamper; and the sliding part comprises the multi-roller sliding ways fixed on the structural pier and a temporary pier in pairs, and further comprises a railway foundation and a steel guide way which are paved on a platform foundation, and a girder-transporting track run on the steel guide way. The device utilizes the mechanical characteristics of a roller structure so as to reduce requirements on the longitudinal rigidity of the temporary pier, satisfying needs on the climbing of vertical curves in the incremental launching process and greatly accelerating the incremental launching construction process.
Description
technical field [0001] The invention relates to a sliding device for pushing a steel box girder in bridge construction and a pushing construction method. Background technique [0002] The jacking method is an advanced self-erecting construction method for prestressed concrete continuous girder bridges, which has the advantages of requiring less necessary equipment and occupying a small space. When the steel box girder jacking method is used for bridge construction, the steel box girder is pushed forward section by section with the aid of a horizontal hydraulic jack for each prefabricated section to form a bridge cover structure. In the traditional construction method, the sliding device used in the jacking of the steel box girder is a sliding bearing of a polytetrafluoroethylene rubber plate. Under the action of the jacking jack, the steel box girder is pushed forward. The following problems mainly exist in the construction of this sliding device: [0003] (1) There is a s...
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IPC IPC(8): E01D21/00
Inventor 杨国良寇志强刘双友刘喜旺张伟王茂杰孙安博潘国庆
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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