A new type of waterproof sealing belt for bridge modular expansion joint

Abstract

The utility model discloses a novel waterproof sealing tape of bridge modulus type telescopic device relates to bridge engineering component technical field, including the band body made of stainless steel, the band body whole body has elasticity, still include: telescopic portion, the telescopic portion section is arc and sets up at the center place of band body, the telescopic portion protrudes below the band body to form the flow channel for water flow, and the embedded fixed part is arc and sets up at the two side edges of band body, the embedded fixed part is curved towards the band body upper inside, the embedded fixed part can embed in the cavity of section steel, the utility model discloses through the stainless steel material quality gives sealing tape very high tensile strength, impact toughness and corrosion resistance (resistant to oil dirt, resistant to acid and alkali), fundamentally solves the problem of easy ageing, tearing of rubber material, utilizes the elasticity of stainless steel band, makes it and section steel cavity more closely, and the sealing effect is more superior, and it is not easy to fall off.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering component technology, specifically a novel waterproof sealing strip for a modular expansion joint of a bridge. Background Technology

[0002] Bridge expansion joints are a key component of highway bridge pavements. Their function is to accommodate bridge displacement caused by temperature changes, concrete shrinkage and creep, and vehicle loads, ensuring driving safety and comfort. Modular expansion joints, by installing sealing components between the center beam and the side beams, decompose the overall displacement into several modules, and are currently the most widely used type of expansion joint.

[0003] As the core waterproof component of modular expansion joints, waterproof sealing strips are typically installed inside the cavities between steel sections. This allows the expansion joint surface to both expand and contract normally while forming a sealing plane, thus sealing the bridge deck, collecting and draining accumulated water and dirt, and protecting the underlying beams, supports, and other structures from corrosion.

[0004] Currently, common waterproof sealing strips are mostly made of materials such as EPDM rubber, neoprene rubber, or natural rubber through microwave vulcanization. These rubber products have drawbacks such as easy aging, tearing, poor corrosion resistance, and insufficient impact resistance. They are especially prone to damage under long-term conditions of vehicle pressure, sun and rain exposure, and de-icing agent corrosion. Once the sealing strip is damaged, water and pollutants will seep in, seriously jeopardizing the durability and safety of the bridge structure. Utility Model Content

[0005] The present invention aims to overcome the above-mentioned defects of existing rubber sealing tapes and provide a new type of waterproof sealing tape with high strength, good toughness, aging resistance, corrosion resistance, long service life and easy installation and replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel waterproof sealing strip for a modular expansion joint on bridges, comprising a strip body made of stainless steel, wherein the strip body is elastic as a whole, and further comprising: The telescopic part has an arc-shaped cross-section and is located at the center of the belt body. The telescopic part protrudes downward from the belt body and forms a flow channel for water supply. The embedding part has an arc-shaped cross-section and is located at both sides of the strip body. The embedding part is bent towards the upper inner side of the strip body and can be embedded into the cavity of the steel profile. The upper end of the embedding part has a folded edge.

[0007] Preferably, the belt body is integrally formed by pressing stainless steel belt.

[0008] Preferably, the strip body is integrally formed by rolling stainless steel strip.

[0009] This utility model provides a novel waterproof sealing strip for a modular expansion joint device for bridges, which has the following beneficial effects: 1. The stainless steel material gives the sealing strip extremely high tensile strength, impact toughness and corrosion resistance (resistant to oil, acid and alkali), fundamentally solving the problems of easy aging and tearing of rubber materials; 2. Utilizing the elasticity of the stainless steel strip, it can be more tightly bonded to the steel profile cavity, resulting in a better sealing effect and making it less prone to falling off; 3. Drainage and pollution prevention: The optimized downward-protruding arc of the telescopic part makes the flow channel wider and the drainage smoother, which can effectively prevent the accumulation of dirt and reduce the corrosion of the device and the lower structure. 4. Its service life far exceeds that of rubber sealing strips, reducing the frequency of maintenance and replacement, resulting in lower overall costs. At the same time, it is easy to install and highly efficient. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the belt assembly. Figure 2 This is a cross-sectional view of the belt.

[0011] In the diagram: 1. Belt body; 1-1. Telescopic part; 1-2. Embedding part; 1-3. Folded edge; 2. Section steel. Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0013] Please see Figures 1-2 This utility model provides a technical solution: a novel waterproof sealing strip for a modular expansion joint of a bridge, comprising a strip body 1 made of stainless steel, wherein the strip body 1 is elastic as a whole, and further comprising: The telescopic part 1-1 has an arc-shaped cross-section and is located at the center of the belt body 1. The telescopic part 1-1 protrudes downward from the belt body 1 and forms a flow channel for water supply. The embedding part 1-2 has an arc-shaped cross-section and is located at both sides of the belt body 1. The embedding part 1-2 is bent towards the upper inner side of the belt body 1. The embedding part 1-2 can be embedded into the cavity of the profile 2. The upper end of the embedding part 1-2 has a folded edge 1-3, which increases the contact area between the embedding part 1-2 and the cavity, and also increases the strength of the embedding part 1-2.

[0014] As an embodiment of this utility model, the belt body 1 is integrally formed by pressing stainless steel belt.

[0015] As an embodiment of this utility model, the belt body 1 is integrally formed by rolling stainless steel strip.

[0016] Example: According to the appendix of the instruction manual Figure 1-2 It is known that the belt body 1 is made of thin stainless steel. The belt body 1 has embedding parts 1-2 at both edges, identical to the cavities of the structural steel 2 (side beam steel and middle beam steel). The belt body 1 has a downward-protruding telescopic part 1-1 at its center. The telescopic part 1-1 is arc-shaped; its curvature changes when the belt body 1 is stretched or contracted, ensuring that the embedding parts 1-2 at the edges can move away from or closer to each other. Due to the elasticity of the stainless steel strip, it is tightly sealed within the cavities, preventing leakage and detachment. The belt body 1 is tightly embedded in the cavities of the side beam steel and middle beam steel. Based on the concept of a modular telescopic device, the waterproof sealing strip is sequentially embedded in the cavities of the telescopic device structural steel 2, achieving a waterproof and sealing effect. The downward-protruding arc shape of the expansion joint 1-1 of the belt body forms a flow channel. This flow channel is wider and the drainage is smoother. The smooth drainage effect prevents dirt from being retained in the expansion device after rain or snow. Therefore, the timely discharge of dirt will prevent it from corroding the expansion device and other bridge structures below the expansion device, which plays a crucial role in extending the life of the bridge.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel waterproof sealing strip for a modular expansion joint of a bridge, characterized in that, Includes a belt (1) made of stainless steel, the belt (1) being elastic in its entirety, and further includes: The telescopic part (1-1) has an arc-shaped cross-section and is located at the center of the belt body (1). The telescopic part (1-1) protrudes downward from the belt body (1) and forms a flow channel for water supply. The embedding part (1-2) has an arc-shaped cross section and is located at both sides of the belt body (1). The embedding part (1-2) is bent towards the upper inner side of the belt body (1). The embedding part (1-2) can be embedded into the cavity of the profile steel (2). The upper end of the embedding part (1-2) has a folded edge (1-3).

2. A novel waterproof sealing strip for a modular expansion joint of a bridge according to claim 1, characterized in that, The belt body (1) is integrally formed by pressing stainless steel belt.

3. A novel waterproof sealing strip for a modular expansion joint of a bridge according to claim 1, characterized in that, The strip (1) is integrally formed by rolling stainless steel strip.

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