Concave rib weathering resistant steel-concrete combination bridge deck

A technology for concrete slabs and composite bridges, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of high welding process requirements and large amount of steel coating, so as to ensure industrialized construction, save steel consumption, and reduce the weight of the structure. Effect

Active Publication Date: 2016-07-20
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

The steel-concrete composite bridge deck has light weight, high bearing capacity and good durability, but it has high requirements

Method used

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  • Concave rib weathering resistant steel-concrete combination bridge deck
  • Concave rib weathering resistant steel-concrete combination bridge deck
  • Concave rib weathering resistant steel-concrete combination bridge deck

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[0019] The present invention will be further described below in conjunction with the drawings and embodiments.

[0020] figure 1 , figure 2 The components shown in and the corresponding target are the existing steel-concrete composite bridge deck structure, which specifically includes the bottom steel plate 1 and the cast-in-place concrete slab 3 cast on it, and the bottom steel plate 1 and the cast-in-situ concrete slab 3 are connected as a whole Shear key. The shear key includes a steel plate with holes 2 welded on the bottom steel plate 1 and a steel bar shear key welded and fixed on the surface of the bottom steel plate 1. The cast-in-place concrete slab 3 is formed by pouring concrete on the slab surface of the bottom steel plate 1 and embedding steel shear keys in it. The steel bar shear key includes a longitudinal steel bar 4 inside a hole of a steel plate with a hole, a longitudinal steel bar 5 outside the hole, and a transverse steel bar 6. The connecting position of ...

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Abstract

The invention discloses a concave rib weathering resistant steel-concrete combination bridge deck, to effectively reduce the use amount of steel for a bridge deck system, let the construction quality of the bridge deck easily meet the requirements, simplify the construction process and effectively save the engineering cost. The combination bridge deck comprises at least one combination bridge deck unit, wherein each combination bridge deck unit comprises a bottom steel plate and a cast-in-place concrete plate poured on the bottom steel plate, as well as a shear connector for integrally connecting the bottom steel plate with the cast-in-place concrete plate, and is characterized in that the bottom steel plate is a concave rib-shaped bottom steel plate, the surface of which is provided with concave wave crest parts along the length direction in a spacing manner; two ends of the bottom steel plate are connected with closed perforated steel plates in a welding manner along the width direction; the shear connector comprises the wave crest parts concavely formed on the concave rib-shaped bottom steel plate, and reinforcing bar shear connectors fixedly welded on the surface of the concave rib-shaped bottom steel plate; the cast-in-place concrete plate is formed by pouring concrete on the surface of the concave rib-shaped bottom steel plate, and the reinforcing bar shear connectors are buried in the cast-in-place concrete plate.

Description

technical field [0001] The invention relates to composite structure bridges, in particular to a weather-resistant steel-concrete composite bridge deck with concave ribs. Background technique [0002] In the design process of concrete bridges, in order to reduce the self-weight, the bridge deck must be made light. In order to realize industrialized manufacturing and installation, the construction process should be simple. At present, the bridge decks used in bridge engineering mostly use ordinary reinforced concrete decks, steel decks, laminated beam decks or steel-concrete composite decks. [0003] The self-weight of ordinary reinforced concrete bridge deck accounts for a large proportion of the total load of the bridge, and it is not economical when the span is large. The steel bridge deck is light in weight, but requires a large amount of steel, high cost, low bending stiffness, and is prone to large local deformation. The pavement layer has poor high temperature stabilit...

Claims

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Application Information

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IPC IPC(8): E01D19/12
CPCE01D19/125
Inventor 牟廷敏范碧琨王潇碧郑旭峰王戈易志宏康玲周孝军罗云杰孙才志
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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