Anti-erosion structure of in-service concrete bridge pier

Abstract

The utility model provides an in-service concrete bridge pier anti-erosion structure which comprises a bonding layer wrapped on a bridge pier body, the bonding layer is made of surface hydrophobic materials, an anti-corrosion layer is bonded on the bonding layer, the anti-corrosion layer abuts against a bearing platform, a reinforcing layer is wrapped on the surface of the anti-corrosion layer, and the reinforcing layer is made of carbon fiber cloth materials. According to the anti-erosion structure, the anti-erosion layer and the bridge pier body form an integral structure through cooperation of the bonding layer and the reinforcing layer, the anti-erosion layer and the bridge pier body are jointly stressed, and therefore the bridge pier body can be supported while the waterproof performance of the bridge pier body is improved, the bridge pier body can be subjected to good anti-erosion protection, and the service life of the bridge pier body is prolonged. And corrosion of sulfate and other corrosive ions in the salinized soil to the bridge pier body can be effectively reduced, and the service life of the bridge pier body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bridge pier protection technology, specifically to an anti-corrosion structure for in-service concrete bridge piers. Background Technology

[0002] Bridge piers, as a crucial component of bridges, bear the weight of the bridge superstructure and transfer that weight to the foundation. However, if bridge piers are eroded, it leads to material loss and performance degradation, thus shortening the bridge's lifespan. By improving the erosion resistance of bridge piers, the impact of erosion can be effectively reduced, extending the bridge's lifespan and reducing maintenance costs.

[0003] For example, Chinese utility model patent with patent number 201721692737.X provides a bridge pier with a pressure-reducing and anti-erosion device. The bridge pier is equipped with a separate and independent protective wall. The protective wall includes a foundation pile embedded in the bottom of the riverbed and a reinforced concrete core wall on top. The reinforced concrete core wall and the foundation pile are integrally cast from impermeable concrete. By setting a streamlined reinforced concrete core wall for isolation and diversion, the problem of bridge piers being impacted and eroded, and the foundation stone being easily carried away by turbulent flow, in the prior art is solved.

[0004] Since most current methods of erosion protection for bridge piers involve building protective structures on the outside of the piers, traditional overlapping protective structures cannot work together with the piers to share the load, and their support performance for the piers is lacking, resulting in the piers not receiving adequate support and protection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes an anti-corrosion structure for in-service concrete bridge piers. This addresses the technical problem mentioned in the background section: most current anti-corrosion methods for bridge piers involve constructing protective structures on the outside of the pier. However, traditional overlapping protective structures cannot work together with the pier to share the load, resulting in insufficient support performance for the pier and thus inadequate support and protection for the pier.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-corrosion structure for in-service concrete bridge piers, used for installation on the pier body for protection, wherein the pier body also has a foundation at its bottom, comprising:

[0007] An adhesive layer is wrapped around the main body of the bridge pier, and the adhesive layer is made of a hydrophobic material.

[0008] An anti-corrosion layer is disposed on and bonded to the surface of the adhesive layer, and the anti-corrosion layer abuts against the bearing platform; and

[0009] A reinforcing layer, which is wrapped around the surface of the corrosion-resistant layer, is made of carbon fiber cloth.

[0010] In a preferred embodiment, the adhesive layer is made of epoxy resin.

[0011] In a preferred embodiment, the corrosion-resistant layer is a prefabricated block splicing structure.

[0012] In a preferred embodiment, the anti-corrosion layer includes two sets of C-shaped first prefabricated anti-corrosion blocks, which are arranged opposite to each other and form a cavity to accommodate the main body of the bridge pier.

[0013] In a preferred embodiment, the first prefabricated anti-corrosion block is provided with a first snap-fit ​​protrusion and a first snap-fit ​​groove at both ends, and the first snap-fit ​​protrusion is snapped into the first snap-fit ​​groove on another set of the first prefabricated anti-corrosion blocks.

[0014] In a preferred embodiment, the anti-corrosion layer includes two sets of L-shaped second prefabricated anti-corrosion blocks, which are arranged opposite to each other and form a cavity to accommodate the main body of the bridge pier.

[0015] In a preferred embodiment, the two ends of the second prefabricated anti-corrosion block are respectively provided with a second snap-fit ​​protrusion and a second snap-fit ​​groove, and the second snap-fit ​​protrusion is snapped into the second snap-fit ​​groove on another set of the second prefabricated anti-corrosion blocks.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] During construction, the anti-corrosion structure involves wrapping an adhesive layer around the pier body for waterproofing, followed by the installation of an anti-corrosion layer on the outer surface of the adhesive layer for further protection. The anti-corrosion layer is then fixed by a reinforcing layer made of carbon fiber cloth, forming an integral structure with the pier body to share the load. This improves the waterproofing performance of the pier body while providing support, ensuring excellent anti-corrosion and support protection. Furthermore, it effectively reduces the corrosion of the pier body by corrosive ions such as sulfates in saline soil, thus extending the service life of the pier body.

[0018] Furthermore, the anti-corrosion layer in this anti-corrosion structure can adopt a prefabricated splicing structure, in which two sets of first prefabricated anti-corrosion blocks arranged opposite each other are installed on the main body of the pier, and the first snap-fit ​​protrusion and the first snap-fit ​​groove are used to limit their position, so as to make the construction of the anti-corrosion structure more convenient and faster. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 A cross-sectional view of an anti-corrosion structure for an in-service concrete bridge pier provided by this utility model;

[0021] Figure 2 This is a top view of an anti-corrosion structure for an in-service concrete bridge pier according to the present invention;

[0022] Figure 3 This is a schematic diagram of a structural embodiment of the anti-corrosion layer in an anti-corrosion structure for in-service concrete bridge piers according to the present invention.

[0023] Figure 4 This is a schematic diagram of another embodiment of the anti-corrosion layer in the anti-corrosion structure of an in-service concrete bridge pier according to the present invention;

[0024] Figure label:

[0025] 1. Main pier; 2. Pier cap; 3. Bonding layer;

[0026] 4. Anti-corrosion layer; 41. First prefabricated anti-corrosion block; 411. First snap-fit ​​protrusion; 412. First snap-fit ​​groove; 42. Second prefabricated anti-corrosion block; 421. Second snap-fit ​​protrusion; 422. Second snap-fit ​​groove;

[0027] 5. Reinforcement layer. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0029] Example:

[0030] like Figure 1 , 2 As shown, this utility model provides an anti-corrosion structure for in-service concrete bridge piers, which is installed on the pier body 1 for protection. The bottom of the pier body 1 is also provided with a bearing platform 2, including an adhesive layer 3 wrapped on the pier body 1. The adhesive layer 3 is made of a hydrophobic material. In some preferred embodiments, the adhesive layer 3 is made of epoxy resin. Epoxy resin has good chemical stability, does not react with most chemical substances, has a hydrophobic surface, has a 100% wet strength retention rate, and will not be wetted by cement slurry, thus effectively waterproofing the pier body 1.

[0031] like Figure 1 , 2As shown, in this embodiment, an anti-corrosion layer 4 is bonded to the surface of the adhesive layer 3, and the anti-corrosion layer 4 abuts against the pier cap 2. In some embodiments, the anti-corrosion layer 4 includes the following components by weight: 360 parts silicate cement, 80 parts fly ash, 30 parts silica fume, 792 parts medium or white sand, 1051 parts crushed stone with a diameter of 5mm-22mm, and 140 parts water. The anti-corrosion layer 4 is prepared by mixing the above components by weight. In addition, 10% of the total weight of polycarboxylate high-performance water-reducing agent and 20 parts of concrete anti-corrosion inhibitor can be added when mixing the above materials to improve the adhesion and anti-corrosion strength between the materials. This can achieve good anti-corrosion and waterproof performance, effectively reduce the erosion of the pier body 1 by highly corrosive soils such as saline soil, and enhance the support performance of the pier body 1.

[0032] like Figure 2 , 3 As shown, in this embodiment, the anti-corrosion layer 4 is a prefabricated block splicing structure. It can be understood that, in some preferred embodiments, the anti-corrosion layer 4 includes two sets of C-shaped first prefabricated anti-corrosion blocks 41. The two sets of first prefabricated anti-corrosion blocks 41 are arranged opposite to each other and form a cavity to accommodate the pier body 1. The two ends of the first prefabricated anti-corrosion block 41 are respectively provided with a first snap-fit ​​protrusion 411 and a first snap-fit ​​groove 412. The first snap-fit ​​protrusion 411 is snapped into the first snap-fit ​​groove 412 on the other set of first prefabricated anti-corrosion blocks 41.

[0033] Prefabrication of the anti-corrosion layer 4 makes its construction more convenient and faster. Furthermore, the cooperation between the first snap-fit ​​protrusion 411 and the first snap-fit ​​groove 412 can prevent the two sets of first prefabricated anti-corrosion blocks 41 from misaligning and loosening after installation, thereby improving the stability and reliability of the anti-corrosion structure.

[0034] like Figure 2 , 4 As shown, it is also understood that in some preferred embodiments, the anti-corrosion layer 4 includes two sets of L-shaped second prefabricated anti-corrosion blocks 42, which are arranged opposite to each other and form a cavity to accommodate the pier body 1. Each end of the second prefabricated anti-corrosion block 42 is provided with a second snap-fit ​​protrusion 421 and a second snap-fit ​​groove 422, respectively. The second snap-fit ​​protrusion 421 snaps into the second snap-fit ​​groove 422 on the other set of second prefabricated anti-corrosion blocks 42. The second snap-fit ​​protrusion 421 and the second snap-fit ​​groove 422 provide auxiliary connection between the two sets of L-shaped second prefabricated anti-corrosion blocks 42, achieving a good supporting effect.

[0035] like Figure 1 , 2As shown, in this embodiment, the surface of the anti-corrosion layer 4 is further wrapped with a reinforcing layer 5, which is made of carbon fiber cloth. Carbon fiber cloth is high-strength and lightweight, effectively enhancing the load-bearing capacity and stiffness of the structure. It also has good adhesion properties, allowing it to be firmly bonded to the surface of the structure, thus providing stable fixation to the anti-corrosion layer 4. This enables the anti-corrosion layer 4 and the pier body 1 to form a unified whole and share the load, improving the support effect on the pier body 1.

[0036] The specific usage and beneficial effects of this utility model are as follows:

[0037] During construction, the anti-corrosion structure involves wrapping the adhesive layer 3 around the pier body 1 for waterproofing, and then installing the anti-corrosion layer 4 on the outer surface of the adhesive layer 3 for further protection. The anti-corrosion layer 4 is fixed by a reinforcing layer 5 made of carbon fiber cloth, forming an integral structure with the pier body 1 to share the load. This improves the waterproofing performance of the pier body 1 while providing support, ensuring that the pier body 1 receives good anti-corrosion and support protection. It also effectively reduces the corrosion of the pier body by corrosive ions such as sulfates in saline soil, thus extending the service life of the pier body 1.

[0038] Furthermore, the anti-corrosion layer 4 in the anti-corrosion structure can adopt a prefabricated splicing structure, with two sets of oppositely arranged first prefabricated anti-corrosion blocks 41 installed on the pier body 1, and limited by the cooperation of the first snap-fit ​​protrusion 411 and the first snap-fit ​​groove 412, so that the construction of the anti-corrosion structure is more convenient and faster.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. An anti-corrosion structure for an in-service concrete bridge pier, used for being installed on a pier body (1) to protect it, wherein a cap (2) is also provided at the bottom of the pier body (1), characterized in that: Included are: An adhesive layer (3) wrapped on the pier body (1), the adhesive layer (3) being made of a surface hydrophobic material; An anti-corrosion layer (4) is disposed on the surface of the bonding layer (3) and bonded thereto, and the anti-corrosion layer (4) abuts against the support platform (2); and A reinforcing layer (5) is wrapped around the surface of the anti-corrosion layer (4), and the reinforcing layer (5) is made of carbon fiber cloth.

2. The anti-corrosion structure of an in-service concrete bridge pier according to claim 1, characterized in that: The bonding layer (3) is made of epoxy adhesive.

3. The anti-corrosion structure of an in-service concrete bridge pier according to claim 1, characterized in that: The anti-corrosion layer (4) is a prefabricated block splicing structure.

4. The anti-corrosion structure of an in-service concrete bridge pier according to claim 3, characterized in that: The anti-corrosion layer (4) comprises two groups of C-shaped first prefabricated anti-corrosion blocks (41), and the two groups of the first prefabricated anti-corrosion blocks (41) are arranged opposite to each other and enclose a cavity for accommodating the bridge pier body (1).

5. The anti-corrosion structure of an in-service concrete bridge pier according to claim 4, characterized in that: The first prefabricated anti-corrosion block (41) is provided with a first clamping ridge (411) and a first clamping groove (412) at both ends thereof, and the first clamping ridge (411) is clamped in the first clamping groove (412) on another group of the first prefabricated anti-corrosion blocks (41).

6. The anti-corrosion structure of an in-service concrete bridge pier according to claim 3, characterized in that: The anti-corrosion layer (4) comprises two groups of L-shaped second prefabricated anti-corrosion blocks (42), and the two groups of the second prefabricated anti-corrosion blocks (42) are arranged opposite to each other and enclose a cavity for accommodating the bridge pier body (1).

7. The anti-corrosion structure of an in-service concrete bridge pier according to claim 6, characterized in that: The two ends of the second prefabricated anti-corrosion block (42) are respectively provided with a second clamping ridge (421) and a second clamping groove (422); the second clamping ridge (421) is clamped in the second clamping groove (422) on another group of the second prefabricated anti-corrosion blocks (42).

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