Novel anti-corrosion, noise-reducing, vibration-reducing and anti-seismic steel reinforced concrete diaphragm beam

Abstract

The invention discloses a novel anti-corrosion, noise-reducing, vibration-reducing and anti-seismic steel reinforced concrete diaphragm which structurally comprises a steel cross beam, shear nails and a concrete block, the steel cross beam comprises an upper flange, a lower flange and a web, the steel cross beam is wrapped in the concrete block, and the steel cross beam and the concrete block are combined into a whole through the shear nails to form a steel-reinforced concrete structure. The diaphragm beam is suitable for connection of the steel main beams of the composite beams with any bridge span and any bridge width, construction is easy and convenient, and the problem that the beam ends of existing steel beams are corroded due to water leakage is solved through a concrete wrapping method; and meanwhile, the balance weight at the fulcrum of the steel beam is increased, the rigidity of the bridge is improved, the obvious noise reduction and vibration reduction effects are achieved on driving impact at the expansion joint of the bridge, and in addition, the anti-seismic property of the whole bridge is greatly improved.

Description

technical field [0001] The invention relates to the technical field of bridge design, in particular to a novel anti-corrosion, noise-reduction, vibration-reduction and shock-resistance steel-reinforced concrete diaphragm beam. Background technique [0002] The steel-concrete composite girder bridge is a structural form different from traditional girder bridges developed on the basis of steel girders and reinforced concrete girders by combining the respective advantages of the two materials. It can realize standardized design, industrialized manufacturing, and assembly to the greatest extent. In recent years, it has been widely used in the field of bridge engineering; in order to ensure the lateral rigidity of the steel girder, a transverse beam is usually installed at the end of the beam. Currently, the transverse beams used in composite beams are all made of steel structures Light weight. [0003] Based on the inventor's discovery above, the existing novel anti-corrosion, ...

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Problems solved by technology

[0003] Based on the inventor's discovery above, the existing novel anti-corrosion, noise-reduction, vibration-reduction and earthquake-resistance steel-reinforced concrete diaphragm beams mainly have the following deficiencies. The driving impact at the expansion joints continues to increase, causing greater noise and vibration at the beam end. In addition, due to the long-term open-air working environment, the corrosion of steel beams also occurs frequently, which further creates conditions for the initiation and development of diseases. The overall stiffness and dynamic performance will change greatly, seriously endangering the safety and normal use of the bridge.

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