Anti-overturning support of curve beam bridge

Abstract

The invention provides an anti-overturning support of a curve beam bridge. The support comprises two support main bodies which are transversely arranged, wherein each of the support main bodies comprises a steel anchor plate connected to a beam body and an abutment wall, separately, a rotating bearing is welded to the bottom of the above steel anchor plate, a rotating sleeve sleeves the rotating bearing, a spiral sliding track is arranged on the peripheral inner side wall of the rotating sleeve, a rubber gasket is arranged between the bottom of the rotating bearing and a below steel anchor plate, vertical steel plates are transversely arranged along two sides of the bridge on the rubber gasket of the below steel anchor plate, a cylindrical tiger tooth is vertically welded to the upper end, close the inner wall side of the rotating sleeve, of the vertical steel plate, the end of the tiger tooth is embedded into the sliding tack on the inner side wall of the rotating sleeve, a connecting rod is fixed to the rotating sleeve, and the connecting rods on the two support main bodies are separately and relatively arranged on front and back sides of the two supports. By adopting a reasonable mechanical structure, an adverse torque generated by unbalance loading the bridge is effectively resisted, and the support plays a positive role of preventing common poor engineering accidents, for example, beam sideslip and overturning, of the curve beam bridge.

Description

technical field [0001] The invention belongs to the field of bridge bearings, in particular to an anti-overturning bearing of a curved girder bridge. Background technique [0002] Curved prestressed concrete continuous box girder bridges have good structural performance, and have the advantages of continuity, beautiful line shape and economy, and have appeared more and more in urban bridges. But the force of the curved girder bridge is more complicated. Under the action of vertical load and torque, the curved beam will generate bending moment and torque at the same time, and affect each other. At the same time, the inner and outer support reaction forces of the curve are not equal, and the difference between the inner and outer reaction forces causes a large torque, making the beam section in a state of "bending-torsion coupling". In curved beams, due to the large torque, the phenomenon of "overloading the outer girders and unloading the inner girders" usually occurs, and ...

AI Technical Summary

Problems solved by technology

In addition, because the reaction force of the inner and outer supports of the curved beam is sometimes very different, when the live load is offset, the inner support will even have a negative reaction force. If the support cannot bear the tensile force, the beam body will be separated from the support. In severe cases, the beam body will slip and overturn

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