Anti-seismic prefabricated assembly bridge pier and construction method thereof

Abstract

The invention discloses an anti-seismic prefabricated assembly bridge pier and a construction method thereof. The bridge pier is formed by assembling a pier column upper section, a pier column lower section, prestressing tendons and a rubber elastic layer to form a bridge pier body, notches are reserved around the prefabricated bridge pier body, energy-consuming steel plates are anchored into thenotches, and it is ensured that the energy-consuming steel plates do not be bent to the inner side of a prefabricated pier column under the effect of loads; and split bolts are arranged between the oppositely-arranged energy-consuming steel plates, and it is ensured that the energy-consuming steel plates cannot be bent to the outer side of the pier column. By arranging the rubber elastic layer, onthe one hand, the anti-seismic energy dissipation capacity of the externally-mounted energy-consuming steel plates and the built-in rubber elastic layer is fully utilized, and the energy-consuming steel plates and the rubber elastic layer cooperate to jointly ensure the anti-seismic performance; on the other hand, collision between the upper and lower sections and caused by the earthquake can beprevented, and cracking and crushing of concrete are effectively prevented. By means of the construction method, the technical route of pre-prefabrication and on-site assembly is adopted, and the prefabricated energy-consuming steel plates, the pier column upper section and the pier column lower section can be connected together through an anchoring device and the prestressing tendons, and assembly is completed simply and efficiently.

Description

technical field [0001] The invention belongs to the technical field of road and bridge construction, and in particular relates to an anti-seismic prefabricated assembled bridge pier and a construction method thereof. Background technique [0002] Prefabricated assembly technology has the advantages of high construction efficiency, small impact on the environment and traffic, reliable engineering quality and strong self-resetting ability. Since the construction of the Choisy-le-Roi Bridge on the Seine River in France in 1962, it has gradually become a bridge superstructure construction. One of the commonly used construction methods, some engineering applications have also begun in earthquake areas. In 1971, segmental prefabricated piers were used for the first time in the John F. Kennedy Causeway Bridge in Texas, USA. [0003] In the patent document with the publication number CN105586828A, a pier energy dissipation and anti-crush structure with built-in energy-dissipating s...

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Problems solved by technology

[0006] To sum up, in the prior art, although both the energy-dissipating steel plate and the rubber elastic layer can be used to resist earthquakes and dissipate energy, their structures are relatively complex, the cost is high, and the construction period is relatively long

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