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a bridge

A technology for bridges and concrete layers, which is applied to bridges, bridge parts, bridge construction, etc., and can solve problems such as missing edges and corners, expensive maintenance costs, and pockmarked surfaces

Active Publication Date: 2014-10-29
CHINA SHENHUA ENERGY CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary concrete bridges have problems such as pockmarks, exposed bars, honeycombs, hollow tubes, gaps and interlayers, missing edges and corners, cracks, and insufficient strength; steel structure bridges have corrosion problems, and Maintenance is difficult and expensive. In addition, steel structure bridges are afraid of fire, and fire prevention has become an increasingly serious problem today.

Method used

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Experimental program
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Embodiment approach

[0068] like figure 1 and Figure 19 As shown, according to an embodiment of the present invention, the thickness of the middle part of the first concrete layer 1 is greater than the thickness of both sides of the first concrete layer 1 . exist figure 1 In the shown embodiment, the width of the first concrete layer 1 is greater than the width of the second concrete layer 2, and the lower corners on both sides of the first concrete layer 1 have been chamfered, so that corners with less load can Parts reduce the amount of materials, so as to achieve the purpose of saving materials and reducing costs, and the production is simple and the demoulding is convenient. exist Figure 19 In the embodiment shown, the width of the first concrete layer 1 is greater than the width of the second concrete layer 2, and the lower corners on both sides of the first concrete layer 1 are set as arc transitions, so that the corners with smaller loads can Parts reduce the amount of materials, so a...

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Abstract

The invention provides a bridge, which comprises a first concrete layer (1) arranged at the top, a second concrete layer (2) arranged in the middle and a steel plate layer (3) arranged at the bottom, wherein the pressure resistance intensity of the first concrete layer (1) is greater than that of the second concrete layer (2), and a hollow pipe (4) is arranged in the first concrete layer (1) and / or the second concrete layer (2). The bridge has better bending resistance, shearing resistance, pressure resistance and anti-fatigue performance. In addition, compared with the bridge provided with holes, the bridge has the advantages that the hollow pipe is arranged in the bridge, and the construction work procedure of the demolding can be reduced, so the construction progress is accelerated.

Description

technical field [0001] The present invention relates to a bridge. Background technique [0002] At present, with the increasing number of means of transportation, roads and railways have begun to develop from the ground to the air, forming an increasing number of road bridge projects, but there are many problems in today's road bridge structures, for example: the bridge design load is "medium-live load ", if the live load factor is too large, the safety reserve of the bridge will be greatly reduced, and long-term operation will have a greater negative impact on the safety of the bridge; the long-term load of trains, large passenger and freight vehicles will aggravate the development of fatigue damage of the bridge structure, affecting The fatigue performance of the bridge shortens the service life of the bridge. [0003] Most of the current bridges are constructed of concrete or steel. However, ordinary concrete bridges have problems such as pockmarks, exposed bars, honeyc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D2/00E01D19/00
Inventor 薛继连余志武贾晋中宋力李进洲孟宪洪黄先国
Owner CHINA SHENHUA ENERGY CO LTD