What are the advantages of the MS series multi-directional displacement comb plate expansion device
The MS series multi-directional displacement comb plate expansion device relies on a displacement box, spherical pair, and modular comb structure, which can simultaneously adapt to longitudinal, transverse, and vertical turning angles as well as torsional deformation of bridges. It is widely used in urban overpasses, large-span bridges, curved bridges, and rail transit bridges.
The MS series multi-directional displacement comb plate expansion device relies on a displacement box, spherical pair, and modular comb structure, which can simultaneously adapt to longitudinal, transverse, and vertical turning angles as well as torsional deformation of bridges. It is widely used in urban overpasses, large-span bridges, curved bridges, and rail transit bridges.
1. Excellent multi-directional displacement performance
Built in multi-directional displacement box and spherical rotating structure, in addition to longitudinal expansion and contraction, it can simultaneously adapt to lateral displacement, vertical rotation, and torsional displacement, solving the problem of traditional expansion devices only being able to expand and contract unidirectionally and being prone to jamming and failure under twisting conditions; Suitable for curved bridges, cable-stayed bridges, and complex bridges with uneven foundation settlement.
2. Smooth driving and low noise
The comb teeth are interlocked, the bridge deck is continuous and flat, and there is no obvious jumping impact when vehicles pass through; Configuring polymer damping cushion layer to weaken the rigid impact between steel plate and concrete, the traffic noise is much lower than that of modular expansion joints, suitable for urban bridges and elevated rail transit.
3. High load-bearing capacity and good fatigue resistance
The comb plate is made of high-strength alloy steel, with an overall rigid anchoring system that can withstand repeated impact loads from heavy-duty vehicles and has strong fatigue resistance; The tooth end is subjected to stress dispersion treatment, which is suitable for high-frequency dynamic load conditions in heavy-duty and rail transportation.
4. Modular structure, friendly to installation and modification
Modular unit assembly, small slot installation depth, strong adaptability for old bridge renovation; The anchoring components can be welded first, and then the comb plate can be leveled after base note. The construction leveling is simple, and the on-site installation efficiency can be improved.
5. Easy to maintain and can be partially replaced
Modular independent unit, which can be disassembled and replaced with local modules separately in case of damage, without the need for overall disassembly, reducing maintenance costs and road closure time.
6. Waterproof and dustproof, with good durability
The waterproof rubber strip is arranged under the comb plate, not directly exposing the road surface, and is not easily aged or damaged; Can prevent rainwater, sand and gravel debris from entering the gaps at the end of the beam, avoiding corrosion of the steel bars at the end of the beam; Components can be hot-dip galvanized for corrosion resistance, adapting to salt spray and humid outdoor environments, and extending their overall lifespan.
7. Wide range of scalability and adaptability
Comb tooth meshing structure, capable of achieving significant expansion and contraction; Each module distributes torsional deformation and has stronger displacement capability, adapting to the temperature deformation requirements of long-span bridges.
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