Earthquake isolation and reduction structure and earthquake reduction method thereof

Abstract

The invention provides a shock-absorbing and isolating structure and a shock-absorbing method thereof, which belong to the technical field of bridge engineering and are used to solve the problems of unsatisfactory shock-absorbing effect or high cost in traditional shock-absorbing and isolating methods. The structure includes a number of spherical bearings and rubber bearings arranged at intervals between the upper structure and the lower structure of the bridge. The top and bottom of the body are respectively equipped with upper and lower support steel plates, and the upper and lower support steel plates and the corresponding upper and lower cushion blocks are respectively provided with upper and lower cushion steel plates, and the upper and lower cushion steel plates are embedded Inside the upper and lower pads. In this damping method, first, the spherical bearing and the rubber bearing are fixedly connected between the upper and lower structures of the bridge, and the spherical bearing and the rubber bearing are arranged side by side; then when an earthquake occurs, the spherical bearing is After shearing, the rubber bearing bears the horizontal force, so as to realize the control of the horizontal displacement of the bridge girder.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a shock absorbing and isolating structure and a shock absorbing method thereof. Background technique [0002] Continuous girder bridge refers to a continuous girder bridge with two or more spans, which belongs to the statically indeterminate system. Under the action of constant live load, the negative bending moment of the fulcrum generated by the continuous beam has an unloading effect on the positive bending moment of the mid-span, so that the internal force state is relatively uniform and reasonable, so the beam height can be reduced, thereby increasing the clearance under the bridge, saving materials, and improving rigidity. Large, good integrity, high overload capacity, high safety, less expansion joints on the bridge deck, and because the bending moment of the mid-span section is reduced, the bridge span can be increased. However, due to the weight of the supers...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of unsatisfactory shock-absorbing effect or high cost in the current shock-absorbing and isolation methods of long-span low-pier continuous girder bridges, the present invention provides a simple-structured, cost-saving shock-absorbing and isolating structure and a shock-absorbing method to reduce bridge Seismic force of the upper structure on the lower structure, and control the horizontal displacement of the beam

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