A New System of Lateral Seismic Structures of Rib Arch Bridges with Buckling Constrained Braces
A buckling-constrained, seismic-resistant structure technology, applied in the field of bridge structures, can solve problems such as stiffness and bearing capacity reduction, safety hazards, and economic losses
Inactive Publication Date: 2015-10-28
DALIAN MARITIME UNIVERSITY
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Problems solved by technology
[0002] Under the action of strong transverse earthquake, the traditional rib arch system is prone to cracking and buckling failure due to the high stiffness of local components (horizontal braces), and the transverse connection system is damaged, which weakens the transverse stiffness of the arch ring. The overall structure of the arch bridge is damaged, and the repair is difficult, resulting in great safety hazards and economic losses.
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[0015] like figure 1 A new transverse seismic structural system of rib arch bridges with buckling restraint bracing is shown, which is characterized in that it includes main girder 1, pier 2, arch rib 3 for connecting main girder 1 and pier 2 and connecting adjacent arches The buckling restraint support 4 of the rib 3; the main girder 1 is fixed above the pier 2 through the arch rib 3; the main girder 1 and the arch rib 3 are connected by a suspender 6; The bridge deck of the beam 1 is distributed laterally; the buckling restraint support 5 is fixed between every two adjacent arch ribs 3, and is fixed laterally relative to the bridge deck;
[0016] The present invention adopting the above-mentioned technical solution first installs buckling restraint support 5 between the two arch ribs 1 of the rib arch bridge (including three types of reinforced concrete rib arch bridge, steel rib arch bridge and steel tube concrete rib arch bridge) to replace the traditional steel bar Concr...
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The invention discloses a novel ribbed arch bridge transverse earthquake resistant structure system with buckling restrained brace, which comprises a main beam, a pier, arch ribs used for connecting the main beam and the pier and a conventional cross arm and buckling restrained brace used for connecting the adjacent arch ribs, wherein the main beam is fixed above the pier through the arch ribs; the main beam is connected with the arch ribs through a hanger rod, no fewer than 2 arch ribs are transversely distributed corresponding to the bridge surface of the main beam; the buckling restrained brace is fixed between every two adjacent arch ribs, and is transversely fixed corresponding to the bridge surface; the system adopting the technical scheme has the advantages that the characteristics of high strength, large stiffness and excellent hysteretic energy performance are utilized through the transverse earthquake resistant structure novel system for the ribbed arch bridge with the buckling restrained brace, the problem that a conventional system is easy to buckle and is unstable, so that strength is wasted is solved, and therefore the earthquake resistance specification requirement is satisfied.
Description
technical field [0001] The invention relates to a bridge structure, in particular to a new lateral seismic structure system of rib arch bridges with buckling restraint supports. Background technique [0002] Under the action of strong transverse earthquake, the traditional rib arch system is prone to cracking and buckling failure due to the high stiffness of local components (horizontal braces), and the transverse connection system is damaged, which weakens the transverse stiffness of the arch ring. The overall structure of the arch bridge is damaged, and the repair is difficult, resulting in great safety hazards and economic losses. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a new lateral seismic structure system of rib arch bridges with buckling constrained supports. [0004] In order to achieve the above purpose, the following technical solutions are adopted: [0005] A new transverse seismic structural...
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IPC IPC(8): E01D4/00E01D19/00
Inventor 李晓莉王东升孙治国石岩
Owner DALIAN MARITIME UNIVERSITY