Steel bridge with inverted ribs and orthotropic composite bridge deck

An orthotropic, steel bridge technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of long-term maintenance of railway steel decks, stress concentration of highway steel decks, and fragile pavement, etc., to avoid Effects of stress concentration and fatigue cracks, good durability, and firm bonding

Pending Publication Date: 2020-02-28
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a steel bridge with an inverted rib orthotropic composite deck, which can effectively solve the problems of complicated construction, fatigue cracks, Problems such as poor durability and stress concentration, as well as problems such as the pavement layer on the road steel bridge deck is vulnerable, and the long-term maintenance of the railway steel bridge deck is difficult

Method used

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  • Steel bridge with inverted ribs and orthotropic composite bridge deck
  • Steel bridge with inverted ribs and orthotropic composite bridge deck
  • Steel bridge with inverted ribs and orthotropic composite bridge deck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] refer to figure 1 , an inverted rib orthotropic composite deck steel bridge, characterized in that it includes: a steel-concrete composite deck 1 and a support beam 2 for supporting the steel-concrete composite deck 1, the support beam 2 is a separate double box Main beam;

[0041] refer to figure 1 , image 3 and Figure 4 , the steel-concrete composite deck 1 comprises: a steel bridge deck 11, a plurality of perforated steel plates 12, an upper reinforcement mesh 13, a lower reinforcement mesh 14 and a concrete layer 15, and the perforated steel plates 12 are arranged on the steel bridge along the longitudinal intervals of the steel bridge decks. panel and arranged over the full width of the steel bridge deck, refer to Figure 5 , a plurality of through holes 121 are provided on the perforated steel plate 12, a plurality of rectangular notches 122 are provided on the top of the perforated steel plate 12, and multiple columns of shear-resistant nails 111 are arrang...

Embodiment 2

[0045] refer to Figure 6 , an inverted rib orthotropic composite deck steel bridge, characterized in that it comprises: a steel-concrete composite deck 1 and a supporting beam 2 for supporting the steel-concrete composite deck 1, the supporting beam 2 is a steel truss beam;

[0046] refer to Figure 6 and Figure 7 , the steel-concrete composite deck 1 comprises: a steel bridge deck 11, a plurality of perforated steel plates 12, an upper reinforcement mesh 13, a lower reinforcement mesh 14 and a concrete layer 15, and the perforated steel plates 12 are arranged on the steel bridge along the longitudinal intervals of the steel bridge decks. panel and arranged over the full width of the steel bridge deck, refer to Figure 8 , a plurality of through holes 121 are provided on the perforated steel plate 12, a plurality of semicircular notches 122 are provided on the top of the perforated steel plate 12, and multiple columns of shear force nails 111 are arranged between adjacent ...

Embodiment 3

[0050] refer to Figure 9 , an inverted rib orthotropic composite deck steel bridge, characterized in that it includes: a steel-concrete composite deck 1 and a support beam 2 for supporting the steel-concrete composite deck 1, the support beam 2 is a separate double box Main beam;

[0051] refer to Figure 9 and Figure 10 The steel bridge deck 1 includes: a steel-concrete composite bridge deck 11, a plurality of perforated steel plates 12, an upper reinforcement mesh 13, a lower reinforcement mesh 14 and a concrete layer 15, and the perforated steel plates 12 are arranged on the steel bridge deck at intervals along the longitudinal interval of the steel bridge deck. and arranged over the full width of the steel bridge deck, refer to Figure 11 , a plurality of through holes 121 are provided on the perforated steel plate 12, a plurality of V-shaped notches 122 are provided on the top of the perforated steel plate 12, and multiple rows of shear force nails 111 are arranged b...

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Abstract

The invention discloses a steel bridge with inverted ribs and an orthotropic composite bridge deck, and belongs to the technical field of bridge engineering. The steel bridge with the inverted ribs and the orthotropic composite bridge deck comprises the steel-concrete composite bridge deck and support beams arranged under the steel-concrete composite bridge deck and used for supporting the steel bridge deck; the steel-concrete composite bridge deck comprises a steel bridge deck slab, multiple steel plates with holes, an upper reinforcing mesh, a lower reinforcing mesh and a concrete layer; themultiple steel plates with the holes are arranged on the steel bridge deck slab at intervals; multiple through holes are formed in the steel plates with the holes; multiple rabbets are arranged at the top ends of the steel plates with the holes; multiple columns of shearing-resistant nails are arranged between the adjacent steel plates with the holes; the lower reinforcing mesh penetrates throughthe through holes so as to be arranged in the steel plates with the holes; the upper reinforcing mesh is arranged above the steel plates with the holes; and the concrete layer is arranged on the steel bridge deck slab and is higher than the upper reinforcing mesh. The steel bridge with the inverted ribs and the orthotropic composite bridge deck provided by the invention can effectively solve theproblems such as complexity in construction, fatigue cracks, poor durability and stress concentration commonly existed on a current orthotropic composite bridge deck structure, and the problems such as rapid wear of a pavement layer on a road steel bridge deck and difficulty in maintaining the steel bridge deck of a railway.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an inverted rib orthotropic composite deck steel bridge. Background technique [0002] In the development process of bridge construction at home and abroad, orthotropic steel deck has become the preferred deck structure of long-span bridges for a relatively long period of time due to its outstanding advantages such as light weight, high bearing capacity, and wide application range. Practice has also shown that the traditional U-shaped closed stiffener orthotropic steel bridge deck structure has prominent problems such as large differences in longitudinal and transverse stiffness, complex structural details, numerous welds, complex force transmission paths, and stress concentration on the deck, and fatigue cracks. Disease problems are constant and difficult to maintain. Contents of the invention [0003] The object of the present invention is to provide a steel bridg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01D19/00
CPCE01D19/00E01D19/125
Inventor 施洲姜兴洪刘振标印涛
Owner SOUTHWEST JIAOTONG UNIV
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