Continuous beam bridge with separation support with self-resetting function

Abstract

The invention discloses a self-resetting function separation support continuous beam bridge, and the beam bridge comprises a main beam, a pier and a self-resetting function separation support; the self-resetting function separation support comprises a sliding support and a self-resetting energy consumption connecting device, and the self-resetting energy consumption connecting device is divided into a sliding type self-resetting energy consumption connecting device and a locking type self-resetting energy consumption connecting device; after the state locking mechanism is removed, the locking type self-resetting energy consumption connecting device forms the sliding type self-resetting energy consumption connecting device. The beam bridge has a grading response mechanism for frequent earthquakes, accidental earthquakes and rare or extremely rare earthquakes; and when the earthquake force is large enough, the locking type self-resetting energy dissipation connecting device is changed into a sliding type self-resetting energy dissipation connecting device. The self-resetting function separation support continuous beam bridge can utilize the anti-seismic potential of the movable piers, all the piers share seismic energy together, and finally the structure returns to the initial position under the combined action of the seismic complementary energy and the restoring force springs.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a continuous girder bridge with self-resetting functional separation supports. Background technique [0002] In order to improve the seismic performance of continuous girder bridges, the ductile anti-seismic design concept and seismic isolation technology are widely used, but the residual deformation of the traditional ductile anti-seismic design is too large after the earthquake, which is not easy to repair, which is not conducive to post-disaster rescue. Under the action of strong earthquakes, the bearings are often damaged due to excessive horizontal relative displacement, not only losing the horizontal energy consumption and shock absorption function, but also the vertical bearing capacity cannot meet the requirements, and due to the large vertical bearing tonnage and complex structure, replacement is very difficult difficulty. At the same time, in the above-ment...

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Problems solved by technology

[0002] In order to improve the seismic performance of continuous girder bridges, the ductile anti-seismic design concept and seismic isolation technology are widely used, but the residual deformation of the traditional ductile anti-seismic design is too large after the earthquake, which is not easy to repair, which is not conducive to post-disaster rescue. Under the action of strong earthquakes, the bearings are often damaged due to excessive horizontal relative displacement, not only losing the horizontal energy consumption and shock absorption function, but also the vertical bearing capacity cannot meet the requirements, and due to the large vertical bearing tonnage and complex structure, replacement is very difficult difficulty

At the same time, in the above-mentioned seismic design method, the components that undertake normal service functions and the components that undertake earthquake action are mostly the same component, and are combined in a "series" manner, which lacks graded response characteristics and dynamic protection capabilities, and it is difficult to achieve strong earthquake protection. Rear self-resetting, easy-to-repair seismic fortification target

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