What are the advantages of modular single seam expansion device
The modular single seam expansion device has the following advantages:
Adapt to large expansion and contraction: Its structural design enables it to meet the demand for large expansion and contraction. It is generally composed of side beams, middle beams, crossbeams, displacement control systems, sealing rubber bands, and other components. By reasonably increasing the number of middle beam
The modular single seam expansion device has the following advantages:
Adapt to large expansion and contraction: Its structural design enables it to meet the demand for large expansion and contraction. It is generally composed of side beams, middle beams, crossbeams, displacement control systems, sealing rubber bands, and other components. By reasonably increasing the number of middle beam steel and sealing bodies, an expansion device can be formed to adapt to different large displacement amounts. The maximum expansion amount can reach about 2000 millimeters, which can well adapt to bridge expansion deformation caused by temperature changes, concrete shrinkage, live load effects, settlement and creep of bridge piers and abutments, and other factors
Good driving comfort: The surface has high flatness, and the components are well coordinated. There will be no obvious bumps or jumps during the vehicle's driving process, which can provide a relatively smooth transition for the vehicle, ensuring driving comfort. At the same time, it also reduces the impact load of the vehicle on the bridge expansion device, which is conducive to extending the service life of the device
Excellent waterproof performance: equipped with sealing rubber bands and other components, it can effectively prevent rainwater, dust, etc. from infiltrating into the expansion joints of the bridge, avoiding the erosion of the lower structure of the bridge by rainwater, protecting the durability and safety of the bridge structure, and having great significance for the long-term stable use of the bridge
Structural safety and reliability: The load-bearing structure and displacement control system are separated, and they do not interfere with each other when subjected to force. The division of labor is clear, which not only ensures safety when subjected to force, but also ensures uniform displacement. All middle beams are supported on the same vertical beam in a displacement control box, reducing the number of beams and reducing the volume of the displacement control box, saving steel. It also overcomes the strict requirements for processing and assembly accuracy of inclined support expansion joints, avoids the self-locking phenomenon that is prone to occur in four-bar linkage structures, and ensures the reliability and stability of the expansion device
Adapt to various types of bridges: Each connection adopts a structure that can rotate and slide, with strong adaptability to various types of bridges such as bends, slopes, slopes, and widths, which can meet the requirements of different bridge structures and has wide applicability
Easy installation: Typically designed in a modular manner, each unit can be quickly assembled on the construction site, and the installation accuracy is relatively easy to control. It can be flexibly adjusted according to the actual size and expansion requirements of the bridge, saving installation time and labor costs
Long service life: It is often made of high-quality steel and other materials, which have good corrosion resistance. In addition, its structural design is reasonable, with good waterproof and dustproof properties, reducing the erosion of internal components by external factors and thus extending the service life of the device
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