What are the types of bridges suitable for MS type comb plate expansion device
The MS type multi-directional displacement comb plate expansion device has the ability to adapt to longitudinal expansion, lateral displacement, vertical rotation, and beam end warping in multiple directions, especially suitable for bridge projects with skew, curve, and beam end rotation. The applicable bridge types are as follows:
The MS type multi-directional displacement comb plate expansion device has the ability to adapt to longitudinal expansion, lateral displacement, vertical rotation, and beam end warping in multiple directions, especially suitable for bridge projects with skew, curve, and beam end rotation. The applicable bridge types are as follows:
1、 Divided by structural form
1. Diagonal bridge: The end of the diagonal bridge will experience lateral displacement, and ordinary expansion joints are prone to jamming and damage. The MS multi-directional displacement comb teeth can adapt to oblique displacement and are an inclined bridge expansion device.
2. Curved bridge: In addition to longitudinal expansion and contraction, the curved beam bridge end is accompanied by radial and tangential displacement. The MS displacement support can release multi-directional deformation, avoiding tooth plate stagnation and tooth to tooth dead.
3. Continuous beam bridge: Multi span continuous beam, with corner and warping deformation at the beam end. The MS comb teeth can adapt to the vertical rotation of the beam end, reducing vehicle jumping and fatigue cracking at the root of the toothed plate.
4. Simply supported beam bridge: Ordinary simply supported beams can also be used, which are mostly used for small and medium expansion simply supported beam slabs, T-beams, and small box girder bridges.
5. Steel concrete composite beam bridge: The deformation of the steel concrete composite section beam end is complex, and there are multiple coupling displacements. The MS type can adapt to the rotation angle and expansion displacement of the steel concrete beam end.
6. Steel structure bridges: Steel box girders and steel truss bridges, with large temperature deformation and obvious beam end angles, are suitable for using MS multi-directional displacement comb plates.
2、 Divided by usage scenario/engineering attributes
1. Urban elevated bridges and urban interchange ramp bridges: a large number of curved and inclined ramps, high vehicle speeds, high requirements for driving smoothness and noise reduction, and a good driving experience with MS comb plates, widely used.
2. Municipal cross river and cross road bridges: Urban area bridges have high requirements for maintenance, waterproofing, and anti-seepage, and are suitable for MS comb devices.
3. Highway mainline bridges: National and provincial highway mainline bridges, suitable for small and medium expansion sections; Special verification is required for scenarios with large extension and contraction of heavy-duty high-speed main lines.
4. Old bridge renovation, maintenance and replacement project: The displacement state of the old bridge end is complex, and there are many defects in the original expansion joints. The MS comb plate has good adaptability to the groove, and is a commonly used selection for old bridge replacement.
5. Landscape bridges and pedestrian bridges: High requirements are placed on the aesthetic appearance of the bridge deck and smooth driving, and MS comb expansion devices can be used (pedestrian bridges need to be equipped with anti slip structures).
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