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An assembled uhpc steel-concrete composite bridge deck and its construction method

A bridge deck and composite bridge technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge materials, etc., can solve problems such as fatigue cracks, and achieve the effects of improving fatigue resistance, fast installation speed, and good durability

Active Publication Date: 2021-06-25
NANJING TECH UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an assembled UHPC steel-concrete composite bridge deck and its construction method, which can overcome the fatigue crack problem existing in the traditional steel bridge deck and U-rib welding position, and improve the performance of the orthotropic steel bridge deck. Structural strength

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  • An assembled uhpc steel-concrete composite bridge deck and its construction method
  • An assembled uhpc steel-concrete composite bridge deck and its construction method
  • An assembled uhpc steel-concrete composite bridge deck and its construction method

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0040] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordi...

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Abstract

The invention relates to the technical field of bridge construction, in particular to an assembled UHPC steel-concrete composite bridge deck, comprising: stepped steel plates formed by continuous membrane pressure; The upper surface of the U-shaped UHPC bridge deck and the stepped steel plate are connected by high-strength bolts; and by pouring C40 concrete between the inverted U-shaped UHPC bridge decks, the entire steel-concrete composite bridge deck is formed as a whole, and asphalt is laid on top of it pavement layer. The invention connects the inverted U-shaped UHPC bridge deck with the stepped steel plate, which can increase the bending rigidity of the bridge deck and improve the fatigue resistance performance; the inverted U-shaped UHPC bridge deck is prefabricated by the factory, the quality of the components is easy to guarantee, and the on-site installation speed is fast ; UHPC prefabricated panels and steel plates are connected by high-strength bolts, which is convenient for maintenance and replacement. The present invention also claims protection of a construction method for an assembled UHPC steel-concrete composite bridge deck.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to an assembled UHPC steel-concrete composite bridge deck and a construction method thereof. Background technique [0002] The orthotropic steel bridge deck is a structure composed of U-ribs perpendicular to each other vertically and horizontally together with the bridge deck cover to jointly bear the wheel load. At present, the traditional composite structure of orthotropic steel bridge deck in China is mainly to lay concrete pavement directly on the orthotropic steel plate, and U-rib and steel bridge deck are usually completed by welding process. [0003] However, in the prior art, when U ribs are welded, various defects such as inclusions, pores, and lack of fusion usually occur at the weld position; To reinforce; [0004] However, due to the long-term vehicle load of the steel bridge deck, fatigue cracks are easily formed at the welded part of the longitudinal U-ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/12E01D19/08E01D101/26E01D101/30
CPCE01D19/08E01D19/125E01D21/00E01D2101/24E01D2101/30
Inventor 刘朵张建东李昊赵佳军林毅郑新李虎
Owner NANJING TECH UNIV
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