What are the applications of ordinary noise reducing comb plate expansion device in the highway indu
1、 Application of New Highway Engineering
1. first-class highway, national and provincial trunk highway bridge
(1) Small and medium span continuous beam bridges and simply supported beam bridges: meet the requirements of temperature deformation, concrete shrinkage and creep displacement, reduce vehicle jumping noise, and improve driving comfort.
(2) Interchange ramp bridges, skew bridges, and c
1、 Application of New Highway Engineering
1. first-class highway, national and provincial trunk highway bridge
(1) Small and medium span continuous beam bridges and simply supported beam bridges: meet the requirements of temperature deformation, concrete shrinkage and creep displacement, reduce vehicle jumping noise, and improve driving comfort.
(2) Interchange ramp bridges, skew bridges, and curved bridges: can adapt to beam torsion displacement, and are less prone to jamming and failure compared to traditional modular expansion joints.
(3) Adjacent to residential areas and village sections of main bridges: good noise reduction effect, reducing traffic noise disturbance to residents.
2. Expressway ancillary bridges (non major bridge mainline large displacement conditions)
(1) Ramp bridges and overpass bridges in high-speed interchanges: with small to medium expansion and contraction, pursuing smooth driving; Prioritize the use of thickened toothed plates to resist truck impacts.
(2) Service area, connecting line bridges: mixed traffic flow, high demand for noise reduction and smoothness.
Ordinary noise reducing comb plates are generally not used for high-speed mainline super large bridges with an expansion capacity greater than 240mm, and modular expansion devices are preferred.
3. Rural roads and tourist roads
(1) Small and medium-sized vehicle bridges on county and township roads; Tourist landscape highway bridges, balancing smooth traffic and aesthetic effects.
(2) Mountainous highway curved bridges and sloping bridges are suitable for composite displacement of beams.
2、 Old highway bridge renovation, maintenance and repair project (with a large amount of usage)
(1) Replacement project of old expansion joints on national and provincial trunk lines: removal and replacement of existing rubber expansion joints and old-fashioned steel expansion joints due to defects; Shallow groove burial does not require extensive chiseling of the beam end pavement layer, reducing construction time and lowering renovation costs.
(2) Bridge deck renovation and widening project: The depth of the old bridge slot is insufficient to adapt to the original anchoring conditions.
(3) Improvement of noise reduction for existing bridges: Replace the complained section of jumping noise with a noise reducing comb plate expansion device directly.
(4) Partial disease repair: Modular structure allows for partial replacement of damaged tooth plates without the need to dismantle the entire device, reducing maintenance costs.
3、 Special highway working condition scenario
(1) Ice, snow, and melting salt usage areas: The gear plate is made of hot-dip galvanized or stainless steel to resist corrosion from melting agents; Provide weather resistant rubber waterstop to ensure waterproof sealing and protect the support and beam end concrete.
(2) Coastal highway bridges: In salt spray corrosion environments, anti-corrosion upgraded materials are selected to reduce the risk of corrosion.
(3) Highway pedestrian overpasses and vehicle landscape bridges: The bridge deck is flat, without protruding steel components, balancing traffic safety and landscape effects.
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