Metal damp seismic reduction and absorption support

Abstract

The invention belongs to the technical field of ball-shaped steel supports, and particularly discloses a metal damp seismic reduction and absorption support. According to the technical scheme, vertical constant strength dual-curve cylindrical steel bars parallel to a lower baffle are fixed on the outer side of the lower baffle of a bottom plate, an upper fixing plate is arranged on the outer side of an upper support plate, clamping grooves are formed in the lower end of the upper fixing plate, the top ends of the constant strength dual-curve cylindrical steel bars are inserted into the clamping grooves, and a certain distance is reserved between the inner side face of the lower baffle and the outer side face of a base. When a seism occurs or a beam body is collided, a shearing force pin mechanism is broken off, relative movement is generated between the upper fixing plate and the bottom plate, force borne by the constant strength dual-curve cylindrical steel bars is even, total cross-section yield occurs when the constant strength dual-curve cylindrical steel bars are deformed, energy consumption capacity is strong, and therefore the influence of the seism on a bridge structure can be reduced or isolated when the seism occurs.

Description

technical field [0001] The invention belongs to the technical field of bridge supports, and in particular relates to a metal damping shock-absorbing and isolation support with high damping performance. Background technique [0002] At present, the seismic bridge spherical bearings used mainly rely on the strength of the structure itself to resist the earthquake force. Once the earthquake force exceeds the design capacity, it will cause damage and failure of the bridge bearing limit device. At this time, the bridge structure will be damaged, which will not only cause huge Economic losses, but also may cause huge casualties. [0003] Chinese patent application Nos. 200910075146.1 and 201120391261.2 respectively disclose an elastic-plastic anti-drop beam spherical steel bearing and a large rigidity shock-absorbing and isolating bearing. Among them, the elastic-plastic column used in the "elastic-plastic anti-fall beam spherical steel bearing" is structurally "elastic-plastic...

AI Technical Summary

Problems solved by technology

Among them, the elastic-plastic column used in the "elastic-plastic anti-fall beam spherical steel bearing" is structurally "elastic-plastic anti-fall beam spherical steel bearing" mainly produces elastic-plastic deformation of the elastic-plastic column in the limit direction to play a role. The effect of shock absorption and isolation, in the direction of displacement, the elastic-plastic column can move freely back and forth along the folded edge, but it cannot play a good role in shock absorption and isolation; The structure fixed together can improve its rigidity to a certain extent, but the plate shape determines the great difference in mechanical properties such as stiffness in all directions. The uncertainty of the direction of the earthquake can be well dealt with, thus affecting the effect of shock absorption and isolation; and the structure composed of multiple "X"-shaped veneers will suffer from mechanical properties such as the overall stiffness of each group of multiple "X"-shaped veneers. The position difference between the plates is large, which affects the performance, and the product quality is not easy to control, thus affecting the overall shock absorption and isolation performance of the support

That is to say, the shock-absorbing and isolating spherical steel bearings currently used have the defects of large displacement and low rigidity after the earthquake

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