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Adhesive zigzag piece-based steel fiber concrete assembled steel bridge panel

A technology of steel fiber reinforced concrete and steel bridge deck, which is applied in the direction of bridges, bridge parts, bridge construction, etc., to achieve the effect of improving durability, good combination effect and controlling construction quality

Active Publication Date: 2017-09-26
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing engineering practice shows that the fatigue cracking problem of orthotropic steel bridge deck and the durability of the pavement on it have not been effectively solved, and more effective design and reinforcement methods for orthotropic steel bridge decks are still needed

Method used

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  • Adhesive zigzag piece-based steel fiber concrete assembled steel bridge panel
  • Adhesive zigzag piece-based steel fiber concrete assembled steel bridge panel
  • Adhesive zigzag piece-based steel fiber concrete assembled steel bridge panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] exist figure 1 , 2 Among them, the present invention is based on the steel fiber concrete composite steel bridge deck of bonded corrugated parts, which has the following steps:

[0046] S1. Use a high-pressure air gun to remove dust and clean the steel bridge deck cover plate 1;

[0047] S2. On the steel bridge deck cover plate 1, use epoxy resin to bond and install the twisted shear connector 2. The thickness of the epoxy resin in this embodiment is 2-4 mm. The selection conditions for the epoxy resin in this embodiment are: : (a) suitable for bonding steel plate and steel plate, steel plate and concrete; (b) suitable for bridge structural components; (c) compressive strength, shear strength, elastic modulus, and shear modulus must meet the structural force requirements ; (d) The hardening time should not be less than 10 hours to ensure sufficient construction time. In this embodiment, Sika epoxy resin is used for bonding. In terms of construction feasibility, the e...

Embodiment 2

[0066] by 1m 3 The ultra-high performance steel fiber reinforced concrete as an example, in 1m 3 The ultra-high performance steel fiber reinforced concrete is composed of the following mass ratio materials:

[0067]

[0068] The above cement is PO425 cement; the particle distribution range of silica fume is 0.1-0.15μm, and the surface area is 15-27m 2 / g; the maximum particle size of the standard sand is less than 0.5mm; the steel fiber is copper-plated steel fiber with a length of 13mm and a diameter of 0.16mm; the model of the water reducer is Sika water reducer, which contains 2 components , A component is Sika 3301c high-efficiency superplasticizer, B component is Sika microbead powder, and the combination of A and B can improve the effect of the superplasticizer; the water is tap water.

[0069] Its preparation method is the same as Example 1 as follows.

Embodiment 3

[0071] by 1m 3 The ultra-high performance steel fiber reinforced concrete as an example, in 1m 3 The ultra-high performance steel fiber reinforced concrete is composed of the following mass ratio materials:

[0072]

[0073]

[0074] The above cement is PO425 cement; the particle distribution range of silica fume is 0.1-0.15μm, and the surface area is 15-27m 2 / g; the maximum particle size of the standard sand is less than 0.5mm; the steel fiber is copper-plated steel fiber with a length of 13mm and a diameter of 0.16mm; the model of the water reducer is Sika water reducer, which contains 2 components , A component is Sika 3301c high-efficiency superplasticizer, B component is Sika microbead powder, and the combination of A and B can improve the effect of the superplasticizer; the water is tap water.

[0075] Its preparation method is identical with embodiment 1.

[0076] In order to verify the effectiveness of the design method proposed in the present invention, an e...

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Abstract

The invention discloses an adhesive zigzag piece-based steel fiber concrete assembled steel bridge panel. The following steps are provided: S1, dedusting and cleaning a steel bridge panel cover plate through a high pressure air gun; S2, adhering shear connection pieces to the steel bridge panel cover plate, wherein a longitudinal distance between every two adjacent shear connection pieces is 10 to 20 cm, and a transverse distance is 8 to 15 cm; S3, casting in situ ultrahigh-performance steel fiber concrete spreading layers on the steel bridge panel cover plate and the shear connection pieces. According to a design method disclosed by the invention, on the basis of considering the gravity of a structure, the local rigidity of the structure is enhanced, the fatigue stress level at a fatigue detail position is lowered, and the performance of the spreading layers is optimized; the design method is the most economic and effective design method in the field of design methods.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a steel fiber concrete composite steel bridge deck based on bonded corrugated parts. The invention adopts a new type of steel corrugated shear connector and bonded connection to realize the design of the combined steel bridge deck, which is mainly used to improve the fatigue performance of the steel bridge deck, improve the local stiffness of the steel bridge deck, improve the durability of the pavement layer of the steel bridge deck, Extend the service life of steel bridge deck pavement. Background technique [0002] Orthotropic steel decks are widely used in long-span bridge structures due to their light weight, large bearing capacity, and convenient construction. However, the complex structure of orthotropic steel decks introduces many fatigue details. With the rapid development of the transportation industry, the traffic volume, vehicle weight and vehi...

Claims

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Application Information

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IPC IPC(8): E01D19/12C04B28/02G01N3/08G01N3/24E01D101/24
CPCG01N3/08G01N3/24E01D19/125C04B28/02C04B2201/50G01N2203/0676G01N2203/0025E01D2101/262C04B18/146C04B14/06C04B14/48C04B2103/302Y02W30/91
Inventor 段兰王春生王茜徐有良张静雯崔冰奥利维王世超
Owner CHANGAN UNIV
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