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Anti-cracking structure for hogging moment region of steel beam-concrete slab combined continuous beam bridge
The invention relates to an anti-cracking structure for a hogging moment region of a steel beam-concrete slab combined continuous beam bridge, and belongs to the field of bridge engineering. A steel beam and a concrete bridge deck slab of the steel beam-concrete slab combined continuous beam bridge are connected through shearing force nails, and the hogging moment region is at the top of a middle pier; a transverse bridge direction expansion joint is formed in the portion, in the hogging moment region at the top of the middle pier in the steel beam-concrete slab combined continuous beam bridge, of the concrete bridge deck slab, and an expansion type structural body is arranged in the transverse bridge direction expansion joint. By means of the transverse bridge direction expansion joint and the expansion type structural body, the deformation constrain of the concrete section in the expansion joint is reduced, the tensile stress of the concrete slab is reduced, and therefore the problem of cracking of the hogging moment region at the top of the middle pier in the steel beam-concrete slab combined continuous beam bridge is solved. The anti-cracking structure is concise in design and convenient to construct, the transverse bridge direction expansion joint can be formed in a hogging moment region of a newly built bridge, and the anti-cracking structure can be used for solving the problem of concrete cracking of the hogging moment region of the steel beam-concrete slab combined continuous beam bridge.
Anti-cracking structure for hogging moment region of steel beam-concrete slab combined continuous beam bridge
The invention relates to an anti-cracking structure for a hogging moment region of a steel beam-concrete slab combined continuous beam bridge, and belongs to the field of bridge engineering. A steel beam and a concrete bridge deck slab of the steel beam-concrete slab combined continuous beam bridge are connected through shearing force nails, and the hogging moment region is at the top of a middle pier; a transverse bridge direction expansion joint is formed in the portion, in the hogging moment region at the top of the middle pier in the steel beam-concrete slab combined continuous beam bridge, of the concrete bridge deck slab, and an expansion type structural body is arranged in the transverse bridge direction expansion joint. By means of the transverse bridge direction expansion joint and the expansion type structural body, the deformation constrain of the concrete section in the expansion joint is reduced, the tensile stress of the concrete slab is reduced, and therefore the problem of cracking of the hogging moment region at the top of the middle pier in the steel beam-concrete slab combined continuous beam bridge is solved. The anti-cracking structure is concise in design and convenient to construct, the transverse bridge direction expansion joint can be formed in a hogging moment region of a newly built bridge, and the anti-cracking structure can be used for solving the problem of concrete cracking of the hogging moment region of the steel beam-concrete slab combined continuous beam bridge.
Anti-cracking structure for hogging moment region of steel beam-concrete slab combined continuous beam bridge
CHEN LIJUN (author) / HU NING (author) / LIU LU (author) / WEN XIAOHE (author) / ZHANG MAOHUI (author)
2015-06-24
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
Brücken
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