Small-span steel-concrete composite bridge slab and its construction technology
A construction technology and bridge slab technology, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems of open ribs that are prone to fatigue and cracking, and achieve the effects of light weight, light weight reduction, and improved structural stability
Active Publication Date: 2017-01-11
邢台路桥千山桥梁构件有限责任公司
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a small-span steel-concrete composite bridge slab and its construction technology. The ribs and roof slabs are set independently of each other, and the vertical fasteners are used to combine the two into one body at the construction site. It solves the problem of fatigue cracking of open ribs that has plagued bridge operations for many years. It is a major breakthrough in technology, and its structure is simple and easy to construct.
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[0024] The invention relates to a small-span steel-concrete composite bridge slab, which is composed of a steel composite skeleton and concrete. For details, see figure 1 , the steel-concrete composite bridge slab includes two parts: a composite top slab and a rib-attached beam 4, and forms an integrated structure by means of vertical fasteners 2. The composite roof includes a roof 3 processed with parallel ribs 3-1 and a reinforcement mesh 1 positioned above the roof 3 and vertically to the free end of the fastener, and cement concrete is poured into the grid structure of the reinforcement mesh 1. The vertical fasteners are 2-10cm higher than the steel top plate, and the ends are welded with the steel mesh 1. On the one hand, the vertical fasteners have the functions of connecting and fastening, and on the other hand, they also have the functions of positioning the steel mesh 1 and holding the cement concrete, which is beneficial to forming a stable pavement structure.
[00...
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The invention discloses a small-span steel mixed composite bridge plate and a construction technology thereof. The small-span steel mixed composite bridge plate is formed by composition of a steel combined framework and concrete and comprises a composite top plate and a rib reinforcing auxiliary beam, and an integral structure is formed through vertical fastening parts. According to the technical scheme, the top plate and the rib reinforcing auxiliary beam are arranged independently creatively, the advantages of steel and the advantages of concrete are effectively utilized, and the problems of fatigue cracking and deformation of open ribs in the prior art are solved.
Description
technical field [0001] The invention belongs to the field of bridge structure design, in particular to a small-span steel-concrete composite bridge slab and its construction technology. Background technique [0002] Steel bridges have the advantages of high strength and high rigidity, and compared with concrete bridges, the beam height and self-weight can be reduced. In manufacturing, steel bridges are generally manufactured in factories and spliced on site, which has the advantages of short construction period, convenient processing and not affected by seasons. However, its construction is difficult, and the amount of steel used is large, and the unit price of pavement materials is high, resulting in high overall cost and it is difficult to achieve the expected effect in actual use. Therefore, it is one of the ideal ways to have a steel-concrete composite bridge deck with light weight, less steel consumption and low overall engineering cost, and this structure can give f...
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IPC IPC(8): E01D2/00E01D21/00
CPCE01D19/125E01D21/00
Inventor 李来宾郭红军
Owner 邢台路桥千山桥梁构件有限责任公司