Bridge damping blocking tenon device

Abstract

A bridge damping blocking tenon device can satisfy the horizontal lateral-pushing resisting rigidity of a bridge body under normal service condition of vertical direction, crosswise direction and longitudinal direction under normal impact load, and further can consume energy in the vertical direction, so as to effectively improve the earthquake resistance of a bridge. The bridge damping blocking tenon device comprises a sleeve, elastic steel plates and a damping blocking tenon; the damping blocking tenon comprises a lower conical column structure section and an upper rectangular structure section; the upper parts of the upper rectangular structure section and the lower conical column structure section are arranged in the rectangular inner cavity of the sleeve; the semi-lunar elastic steel plates are arranged on two sides of the upper part of the lower conical column structure section in the transverse direction of the bridge, the upper ends of the elastic steel plates are blocked in the intersection part of the upper rectangular structure section and the lower conical column structure section, and the lower ends of the elastic steel plates are blocked between the bottom surface of the rectangular inner cavity of the sleeve and the lower conical column structure section. The side wall of the sleeve is fixedly connected to a base plate and is connected with the transverse side wall of the bridge body by high-strength bolt assemblies. The lower end of the lower conical column structure section is fixedly connected with a mounting base and is fixedly connected with a pier stud by high-strength bolt assemblies.

Description

technical field [0001] The invention relates to bridges, in particular to a bridge shock-absorbing tenon device used to prevent falling beams caused by earthquakes. Background technique [0002] At present, there is no special energy-dissipating tenon device for shock absorption for simply supported T-beams in the seismic intensity area at home and abroad. It can dissipate energy, but it does not have energy dissipating capacity in the vertical direction, and it cannot prevent falling beams and realize the limit function. At the same time, the shock-absorbing and isolation bearing will prolong the period of the structure. For the long-period pulse near the fault, resonance phenomenon is prone to occur , but aggravate the structural earthquake damage. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a bridge damping tenon device, which can meet the horizontal anti-side thrust stiffness of the beam under normal imp...

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Problems solved by technology

[0002] At present, there is no special energy-dissipating tenon device for shock absorption for simply supported T-beams in the seismic intensity area at home and abroad. It can dissipate energy, but it does not have energy dissipating capacity in the vertical direction, and it cannot prevent falling beams and realize the limit function. At the same time, the shock-absorbing and isolation bearing will prolong the period of the structure. For the long-period pulse near the fault, resonance is prone to occur , but aggravate the structural earthquake damage

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