Epoxy asphalt concrete bridge deck pavement structure

Abstract

The utility model discloses an epoxy asphalt concrete bridge deck pavement structure which comprises a bridge deck steel plate, a three-dimensional drainage transition layer, an epoxy asphalt bonding layer and an epoxy asphalt concrete layer which are sequentially arranged from bottom to top. By means of the three-dimensional drainage transition layer formed by the transverse corrugated steel plates and the vertical permeable fiber columns, efficient drainage is achieved, accumulated water on the bridge deck is effectively prevented from permeating, and by means of a mechanical anchoring system formed by the inverted-T-shaped anchoring parts and the perforated steel plate net, interlayer connection strength is enhanced, stability of a pavement structure is improved, and the pavement structure is more stable. By adding the nano silicon dioxide modified transition layer, the interface bonding force is further improved, so that the pavement system is firmer and more durable, strong bearing capacity, good durability and excellent driving performance of the bridge deck are ensured, and the problems that the traditional bridge deck pavement waterproof depends on the compactness of the material, but water is easy to permeate to cause delamination and influence the performance, the steel screen welding and fixing efficiency is low, and the service life is short are solved. The corrosion is accelerated; and the service life is shortened.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to an epoxy asphalt concrete bridge deck pavement structure. Background Technology

[0002] Epoxy asphalt concrete bridge deck pavement is a crucial component of modern bridge construction, and its performance directly impacts the bridge's durability and safety. Traditional bridge deck pavement structures primarily rely on the material's density to achieve waterproofing; however, this method has significant limitations. Over long-term use, water easily accumulates on the bridge deck, and if this water penetrates the pavement layers, it can lead to delamination between layers, severely affecting the bridge's performance and lifespan.

[0003] In addition, there are problems with the connection method between steel mesh and bridge deck in traditional bridge deck pavement structures. Steel mesh is usually fixed to the bridge deck by welding. This connection method is not only inefficient, but also easily damages the anti-corrosion layer of the bridge deck. Damage to the anti-corrosion layer will accelerate the corrosion process of the bridge deck and further shorten the service life of the bridge deck. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current epoxy asphalt concrete bridge deck pavement structure, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an epoxy asphalt concrete bridge deck pavement structure, which is suitable for solving the problems of traditional bridge deck pavement waterproofing relying on the density of materials, but which is prone to water accumulation and penetration leading to delamination, affecting performance, and steel mesh welding fixing efficiency being low, damaging the anti-corrosion layer, accelerating corrosion, and shortening service life.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an epoxy asphalt concrete bridge deck pavement structure, comprising a bridge deck steel plate, a three-dimensional drainage transition layer, an epoxy asphalt bonding layer and an epoxy asphalt concrete layer arranged sequentially from bottom to top;

[0008] The three-dimensional drainage transition layer is composed of horizontal corrugated steel plates and vertical permeable fiber columns connected in an alternating manner;

[0009] The surface of the bridge deck steel plate is provided with inverted T-shaped anchors;

[0010] The epoxy asphalt bonding layer is embedded with steel mesh.

[0011] The anchors penetrate the perforated steel plate mesh holes embedded in the three-dimensional drainage transition layer and the epoxy asphalt bonding layer, forming a mechanical lock.

[0012] As a preferred embodiment of the epoxy asphalt concrete bridge deck pavement structure described in this utility model, the corrugation depth of the transverse corrugated steel plate is 5-8mm, the wave crest spacing is 20-30mm, and the elastic modulus is ≥200GPa.

[0013] As a preferred embodiment of the epoxy asphalt concrete bridge deck pavement structure described in this utility model, the permeable fiber column adopts a mixed structure of polyester fiber and basalt fiber, with a porosity of 30%-40% and a height of 15-20mm.

[0014] As a preferred embodiment of the epoxy asphalt concrete bridge deck pavement structure described in this utility model, the inverted T-shaped anchors are distributed in a 50cm×50cm matrix on the surface of the bridge deck steel plate, with an anchoring depth of 3-5mm.

[0015] As a preferred embodiment of the epoxy asphalt concrete bridge deck pavement structure described in this utility model, the perforated steel mesh has a hole diameter of 8-12mm, a mesh density of 15-20 holes / square meter, and a thickness of 2-3mm.

[0016] As a preferred embodiment of the epoxy asphalt concrete bridge deck pavement structure described in this utility model, a nano-silica modified transition layer with a thickness of 0.5-1mm and a Shore hardness of 60-70HA is added between the three-dimensional drainage transition layer and the epoxy asphalt bonding layer.

[0017] The beneficial effects of this utility model are as follows: The three-dimensional drainage transition layer, composed of transverse corrugated steel plates and vertical permeable fiber columns, achieves efficient drainage and effectively prevents water seepage into the bridge surface. The mechanical anchoring system formed by the inverted T-shaped anchors and perforated steel mesh enhances the interlayer connection strength and improves the stability of the pavement structure. Furthermore, the addition of a nano-silica modified transition layer further enhances the interfacial adhesion, making the pavement system more robust and durable. This ensures strong bridge deck load-bearing capacity, good durability, and excellent driving performance. It solves the problems of traditional bridge deck waterproofing relying on material density, which easily leads to water accumulation and seepage causing delamination and affecting performance; and the low welding and fixing efficiency of steel mesh, which damages the anti-corrosion layer, accelerates corrosion, and shortens lifespan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of an epoxy asphalt concrete bridge deck pavement structure proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of a three-dimensional drainage transition layer for an epoxy asphalt concrete bridge deck pavement structure proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the anchor and steel mesh connection of an epoxy asphalt concrete bridge deck pavement structure proposed in this utility model.

[0022] Attached drawings: 1. Bridge deck steel plate; 101. Anchor; 2. Three-dimensional drainage transition layer; 201. Corrugated steel plate; 202. Permeable fiber column; 3. Epoxy asphalt bonding layer; 301. Steel mesh; 4. Epoxy asphalt concrete layer. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Reference Figures 1-3 As one embodiment of this utility model, an epoxy asphalt concrete bridge deck pavement structure is provided.

[0028] It includes, from bottom to top, a bridge deck steel plate 1, a three-dimensional drainage transition layer 2, an epoxy asphalt bonding layer 3, and an epoxy asphalt concrete layer 4;

[0029] The three-dimensional drainage transition layer 2 is composed of horizontal corrugated steel plates 201 and vertical permeable fiber columns 202 connected in an alternating manner;

[0030] The surface of the bridge deck steel plate 1 is provided with inverted T-shaped anchors 101;

[0031] Epoxy asphalt bonding layer 3 is embedded with steel mesh 301;

[0032] Anchor 101 penetrates the perforated steel mesh 301 holes embedded in the three-dimensional drainage transition layer 2 and epoxy asphalt bonding layer 3, forming a mechanical lock. The bridge deck steel plate 1 serves as the base layer, providing good support and stability. The three-dimensional drainage transition layer 2 effectively drains rainwater from the bridge deck, preventing water accumulation from damaging the bridge deck structure. The epoxy asphalt bonding layer 3 tightly bonds all layers together, enhancing the overall structural adhesion. The epoxy asphalt concrete layer 4 serves as the surface layer, directly bearing vehicle loads and exhibiting excellent wear resistance and anti-skid properties.

[0033] The corrugated steel plate 201 has a corrugation depth of 5-8mm, a wave crest spacing of 20-30mm, and an elastic modulus ≥200GPa. The design of the corrugated steel plate 201 gives the three-dimensional drainage transition layer 2 a certain lateral elasticity, enabling it to adapt to the small deformation of the bridge deck.

[0034] The permeable fiber column 202 adopts a mixed structure of polyester fiber and basalt fiber with a porosity of 30%-40% and a height of 15-20mm. The vertical permeable fiber column 202 achieves rapid infiltration and discharge of rainwater through its unique fiber structure.

[0035] The inverted T-shaped anchors 101 are distributed in a 50cm×50cm matrix on the surface of the bridge deck steel plate 1, with an anchoring depth of 3-5mm. Through their special shape and distribution, the inverted T-shaped anchors 101 firmly connect the bridge deck steel plate to the epoxy asphalt bonding layer 3 and epoxy asphalt concrete layer 4 above, which not only enhances the overall stability of the pavement structure, but also prevents the separation of bridge deck layers caused by vehicle loads, thereby improving the durability and safety of the bridge deck pavement structure.

[0036] The perforated steel mesh 301 has a mesh size of 8-12mm, a mesh density of 15-20 meshes / square meter, and a thickness of 2-3mm. The design of the perforated steel mesh 301 allows the epoxy asphalt bonding layer 3 to better penetrate into the holes of the steel mesh 301, forming a stronger connection with the underlying three-dimensional drainage transition layer 2. This not only enhances the adhesion of the epoxy asphalt bonding layer 4, but also improves the overall shear strength and tensile strength of the pavement structure, making the bridge deck pavement structure more robust and durable. Epoxy resin fills the gap between the anchor 101 and the holes.

[0037] A nano-silica modified transition layer with a thickness of 0.5-1mm and a Shore hardness of 60-70HA is added between the three-dimensional drainage transition layer 2 and the epoxy asphalt bonding layer 3. This improves the overall performance of the pavement structure, enhances the durability and anti-aging ability of the bridge deck pavement structure, and makes the bridge deck more beautiful and durable.

[0038] In the drainage transition layer 2, the transverse corrugated steel plate 201 and the vertical permeable fiber column 202 intertwine to form an efficient drainage network, which quickly guides rainwater away from the bridge deck and effectively prevents water infiltration. At the same time, the inverted T-shaped anchor 101 and the perforated steel mesh 301 work closely together to form a mechanical anchoring system, which firmly locks the bridge deck steel plate 1 to the upper layer, significantly enhancing the interlayer connection strength. The addition of the nano-silica modified transition layer further improves the interfacial adhesion, making the pavement structure more stable and durable. These three elements complement each other and jointly ensure the efficient drainage, strong connection and long-term durability of the bridge deck pavement structure, providing a solid guarantee for safe and comfortable vehicle travel.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An epoxy asphalt concrete bridge deck pavement structure, characterized by, The bridge deck steel plate (1), the three-dimensional drainage transition layer (2), the epoxy asphalt bonding layer (3) and the epoxy asphalt concrete layer (4) are sequentially arranged from bottom to top. The three-dimensional drainage transition layer (2) is composed of transverse corrugated steel plates (201) and vertical water-permeable fiber columns (202) which are staggered and connected. The bridge deck steel plate (1) is provided with inverted T-shaped anchoring members (101) on the surface. The epoxy asphalt bonding layer (3) is provided with embedded steel plate mesh (301). The anchoring members (101) penetrate the holes of the embedded steel plate mesh (301) in the three-dimensional drainage transition layer (2) and the epoxy asphalt bonding layer (3), forming mechanical locking.

2. An epoxy asphalt concrete bridge deck pavement structure according to claim 1, characterized in that: The corrugated depth of the transverse corrugated steel plate (201) is 5-8mm, the peak distance is 20-30mm, and the elastic modulus is greater than or equal to 200GPa.

3. An epoxy asphalt concrete bridge deck pavement structure according to claim 1, characterized in that: The water-permeable fiber column (202) adopts a mixed weaving structure of polyester fiber and basalt fiber, the porosity is 30%-40%, and the height is 15-20mm.

4. An epoxy asphalt concrete bridge deck pavement structure according to claim 1, characterized in that: The inverted T-shaped anchoring members (101) are distributed in a 50cm×50cm matrix on the surface of the bridge deck steel plate (1), and the anchoring depth is 3-5mm.

5. An epoxy asphalt concrete bridge deck pavement structure as defined in claim 1, wherein: The aperture of the steel plate mesh (301) is 8-12mm, the mesh density is 15-20 / m2, and the thickness is 2-3mm.

6. An epoxy asphalt concrete bridge deck pavement structure as defined in claim 1, wherein: A nano-silica modified transition layer is additionally arranged between the three-dimensional drainage transition layer (2) and the epoxy asphalt bonding layer (3), the thickness is 0.5-1mm, and the Shore hardness is 60-70HA.

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