| Customization: | Available |
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| After-sales Service: | 3 Years |
| Warranty: | Installation Guide |
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Product Name
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Modular expansion device |
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Working Principle
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The working principle of the modular expansion device is mainly based on its structural design and the synergistic effect of elastic elements to adapt to the deformation requirements of the bridge. Modular expansion devices typically consist of a center beam, side beams, rubber sealing strips, and displacement control systems. When the bridge deforms due to factors such as temperature changes, concrete shrinkage and creep, and vehicle loads, these components can work together to cause the expansion device to expand and contract accordingly. Specifically, the middle and side beams are mostly made of steel materials, which have high strength and stiffness, and can withstand the stress generated by vehicle loads and bridge deformations. Rubber sealing strips play a role in waterproof, dustproof, and buffering, protecting the internal structure of expansion joints while reducing noise and vibration when vehicles pass through. Displacement control systems, such as polyurethane control springs, can adapt to structural deformation, balance the forces between beams, ensure equal spacing between intermediate beams, and effectively absorb vehicle impact loads. In addition, the scalability of modular expansion devices is one of their core functions. By filling the gaps between modules and adjusting the linkage mechanism, expansion joints can effectively expand and contract when the bridge undergoes expansion deformation, thereby reducing the stress impact on the bridge structure. The filling materials for these gaps, such as rubber sealing strips, can also provide further waterproof, dustproof, and soundproofing effects. |
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Product Structure
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The modular expansion device mainly consists of a middle beam, side beams, rubber sealing strips, and displacement control system. Mid beam: It is usually made of special I-beams or other high-strength steel materials, which have high strength and stiffness, and can withstand the stress caused by vehicle loads and bridge deformation. Edge beam: Steel materials are often used, such as RG steel structures, set on both sides of the center beam, with the opening side pointing towards the center beam, to enhance the stability and load-bearing capacity of the device. Rubber sealing strip: It plays a role in waterproof, dustproof, and buffering, protecting the internal structure of expansion joints while reducing noise and vibration when vehicles pass through. Displacement control system: including supporting beams, sliding parts, anchoring components, etc., used to ensure that expansion joints can smoothly expand and contract during bridge deformation, avoiding jamming or damage. In addition, modular expansion devices may also include other components such as beams, expansion control boxes, sliding bearings, and anchoring steel bars, which work together to enable the device to adapt to various deformation requirements of the bridge. |
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Applications
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Modular expansion devices are mainly used in bridge engineering, especially in highway bridges and urban bridges. In bridge engineering, modular expansion devices are used to adapt to the deformation of bridges caused by temperature changes, concrete shrinkage and creep, vehicle loads, and other factors, playing a role in reducing temperature deformation and stress accumulation of bridges, thereby improving the reliability and stability of bridges, and reducing usage and maintenance costs. Specifically, the modular expansion device is applicable to various levels of highway bridges, including expressways, first-class highway, second-class highway, as well as beam bridges, arch bridges, cable-stayed bridges and other different types of bridges3. In addition, modular expansion devices are widely used on bridges in urban roads. Due to the large traffic flow and frequent vehicle loads that urban bridges usually bear, the high load-bearing capacity and good sealing performance of modular expansion devices can ensure the safety and comfort of bridges. |
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Product parameter adjustment
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Production can be carried out according to the drawings, or customized processing can be carried out according to customer needs |
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Program Design
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Design separately according to different usage projects |
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