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Cast-in-place box girder applied to bridge engineering

A bridge engineering, cast-in-place technology, applied in bridges, buildings, etc., can solve the problems of low strength, concrete does not have heat preservation and antifreeze effect, and anti-aging effect is not good. Good aging effect

Inactive Publication Date: 2018-06-05
王燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing cast-in-place box girder structure is not high in strength, and the concrete used does not have the effect of heat preservation and antifreeze, and the anti-aging effect is not good

Method used

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  • Cast-in-place box girder applied to bridge engineering
  • Cast-in-place box girder applied to bridge engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, a cast-in-place box girder applied to bridge engineering includes a body 1, a cavity 2 and a beam 3, the body 1 is arranged in a trapezoidal shape, the cavity 2 is arranged in the body 1, and the beam 3 is arranged In the middle part of the cavity 2, the crossbeam 3 is integrally formed with the body 1, the bottom of the cavity 2 protrudes upwards, and the middle part of the crossbeam 3 is horizontally arranged with a plurality of first steel pipes 4. The body 1 at both ends of the beam 3 is provided with a second steel pipe 5, the first steel pipe 4 and the second steel pipe 5 are fixedly connected by a steel bar 6, the first steel pipe 4 and the second steel pipe 5 are arranged in a U shape, and the The main body 1 and the beam 3 are made of concrete pouring.

[0017] The concrete is made of the following materials according to the ratio of parts by mass: 45 parts of pozzolan cement, 6 parts of calcium lignosulfonate, 3 parts of ceramic fib...

Embodiment 2

[0023] Such as figure 1 As shown, a cast-in-place box girder applied to bridge engineering includes a body 1, a cavity 2 and a beam 3, the body 1 is arranged in a trapezoidal shape, the cavity 2 is arranged in the body 1, and the beam 3 is arranged In the middle part of the cavity 2, the crossbeam 3 is integrally formed with the body 1, the bottom of the cavity 2 protrudes upwards, and the middle part of the crossbeam 3 is horizontally arranged with a plurality of first steel pipes 4. The body 1 at both ends of the beam 3 is provided with a second steel pipe 5, the first steel pipe 4 and the second steel pipe 5 are fixedly connected by a steel bar 6, the first steel pipe 4 and the second steel pipe 5 are arranged in a U shape, and the The main body 1 and the beam 3 are made of concrete pouring.

[0024] The concrete is made of the following materials according to the ratio of parts by mass: 47.5 parts of pozzolan cement, 7 parts of calcium lignosulfonate, 6 parts of ceramic f...

Embodiment 3

[0030] Such as figure 1 As shown, a cast-in-place box girder applied to bridge engineering includes a body 1, a cavity 2 and a beam 3, the body 1 is arranged in a trapezoidal shape, the cavity 2 is arranged in the body 1, and the beam 3 is arranged In the middle part of the cavity 2, the crossbeam 3 is integrally formed with the body 1, the bottom of the cavity 2 protrudes upwards, and the middle part of the crossbeam 3 is horizontally arranged with a plurality of first steel pipes 4. The body 1 at both ends of the beam 3 is provided with a second steel pipe 5, the first steel pipe 4 and the second steel pipe 5 are fixedly connected by a steel bar 6, the first steel pipe 4 and the second steel pipe 5 are arranged in a U shape, and the The main body 1 and the beam 3 are made of concrete pouring.

[0031] The concrete is made of the following materials according to the ratio of parts by mass: 50 parts of pozzolan cement, 8 parts of calcium lignosulfonate, 9 parts of ceramic fib...

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Abstract

The invention discloses a cast-in-place box girder applied to bridge engineering. The cast-in-place box girder is characterized by comprising a body, a cavity and a beam, the body is arranged in a trapezoidal shape, the cavity is disposed in the body, the beam is arranged at the middle of the cavity, the beam and the body are integrally formed, the bottom of the cavity is provided with an upward arc-shaped protrusion, a plurality of first steel pipes are horizontally arranged at the middle of the beam, second steel pipes are disposed in the body at the two ends of the beam, the first steel pipes and the second steel pipes are fixedly connected through steel bars and are in a U shape, and the body and the beam are formed by concrete placement. The cast-in-place box girder applied to bridgeengineering is high in structural strength, and adopted concrete has effects of heat preservation and anti-freezing, and the anti-aging effect is good.

Description

technical field [0001] The invention relates to a cast-in-place box girder used in bridge engineering. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology or meet other transportation needs to make traffic more convenient. A bridge is generally composed of a superstructure, a substructure, a support and ancillary structures. The superstructure is also called a bridge span structure, which is the main structure for crossing obstacles; the substructure includes abutments, piers and foundations; Or the force transmission device installed at the supporting place of the bridge abutment; the auxiliary structures refer to the bridge head board, conical slope protection, bank protection, diversion works, etc. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04C04B28/02
CPCE01D2/04C04B28/021C04B2201/20C04B2201/32C04B24/18C04B14/46C04B18/023C04B14/06C04B24/32C04B24/003C04B22/147C04B14/305C04B14/08C04B24/40C04B14/308C04B14/104C04B24/045C04B24/26
Inventor 王燕
Owner 王燕