Comb-tooth-type expansion joint with position capable of being transversely changed

Abstract

Disclosed is a comb-tooth-type expansion joint with the position capable of being transversely changed. The comb-tooth-type expansion joint comprises a movable comb plate capable of moving longitudinally, a bottom plate and a transverse position change control device arranged between the movable comb plate and the bottom plate. At least one groove is formed in the end, away from comb teeth, of the movable comb plate, and a circular through hole is formed in the bottom of the groove. The transverse position change control device is provided with a transverse kidney-shaped groove corresponding to the groove, and a transverse kidney-shaped through hole attached to the circular through hole is formed in the bottom of the transverse kidney-shaped groove. An anchor bolt penetrating through the through hole and the transverse kidney-shaped through hole can transversely move in the waist direction and is fixed through a nut. When a bridge body of a bridge deviates transversely under the earthquake state, the position of the movable comb plate can be transversely and correspondingly changed through the anchor bolt capable of moving transversely, the rigid damage of transverse clamping of an ordinary comb-tooth-type expansion joint to the whole bridge body of the bridge and a pier can be effectively avoided during earthquake displacement, and the anti-seismic ability of the bridge is improved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering components, and relates to an expansion joint, in particular to a comb-shaped expansion joint capable of lateral displacement. Background technique [0002] The bridge expansion joint refers to a structural joint set at an appropriate position along the construction joint direction of the bridge girder body in order to prevent the structure from cracking or being damaged due to climate temperature changes (thermal expansion, cold contraction). The expansion joint is to divide the building components above the foundation into two independent parts, so that the building or structure can be expanded horizontally along the long direction. [0003] As one of the expansion joints, the comb-tooth expansion joints can meet the expansion and contraction needs of the bridge girders. However, when an earthquake occurs, especially a major earthquake, there will be lateral displacement between the b...

AI Technical Summary

Problems solved by technology

[0003] As one of the expansion joints, the comb-tooth expansion joints can meet the expansion and contraction needs of the bridge girders. However, when an earthquake occurs, especially a major earthquake, there will be lateral displacement between the bridge girders. The existing Expansion joints cannot meet the displacement needs of this kind of dislocation movement. Under the action of lateral dislocation movement, the comb teeth are prone to breakage, and the bolts are easy to break off and fall off, resulting in damage to the entire expansion joint device. Constrained lateral movement between beams

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