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Fabricated UHPC steel-concrete composite bridge deck slab and construction method thereof

A bridge deck, combined bridge technology, applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., can solve problems such as fatigue cracks, and achieve the effects of improving fatigue resistance, fast installation, and increasing bending stiffness.

Active Publication Date: 2020-11-03
NANJING UNIV OF TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Fabricated UHPC steel-concrete composite bridge deck slab and construction method thereof
  • Fabricated UHPC steel-concrete composite bridge deck slab and construction method thereof
  • Fabricated UHPC steel-concrete composite bridge deck slab and construction method thereof

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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 a fabricated UHPC steel-concrete combined bridge deck slab, and the bridge deck slab comprises a stepped steel plate formed through continuous film pressing; a prefabricated inverted-U-shaped UHPC bridge deck slab which is arranged above the stepped steel plate, wherein the inverted-U-shaped UHPC bridge deck slabis connected with the upper surface of the stepped steel plate through high-strength bolts; C40 concrete is poured between the inverted-U-shaped UHPC bridge decks, so the whole steel-concrete combined bridge decks form a whole, and an asphalt pavement layer is laid on the whole steel-concrete combined bridge decks. The inverted U-shaped UHPC bridge deck slab is connected with the stepped steel plates, so the bending rigidity of the bridge deck slab can be improved, and the fatigue resistance is improved; the inverted-U-shaped UHPC bridge deck slab is prefabricated and formed in a factory, sothe quality of components is easy to guarantee, and the on-site installation speed is high; the UHPC prefabricated plate is connected with the steel plate through the high-strength bolts, so maintenance and replacement are convenient. The invention further provides a construction method of the assembly type UHPC steel-concrete composite bridge deck slab.

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 Applications(China)
IPC IPC(8): E01D21/00E01D19/12E01D19/08E01D101/26E01D101/30
CPCE01D21/00E01D19/125E01D19/08E01D2101/24E01D2101/30
Inventor 刘朵张建东李昊赵佳军林毅郑新李虎
Owner NANJING UNIV OF TECH
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