Spherical steel damping support

Abstract

The invention belongs to the technical field of bridge support machines and discloses a spherical steel damping support. The spherical steel damping support is characterized by comprising an upper support plate, a first plane abrasion-resistant plate, a spherical crown liner plate, a middle steel plate, a second plane stainless steel plate and a lower support plate, wherein check blocks (11) for limiting the direction are arranged on the four peripheral edges in a rectangle of the upper seat plate; a plurality of connected double-curved-surface steel sticks are arranged on the periphery of the middle steel plate and the periphery of the lower support seat; pulling preventing blocks are arranged at the bottoms of the check blocks of the corresponding two peripheral edges of the upper support plate; pulling resisting blocks are arranged on the two sides, corresponding to the check blocks with the pulling preventing blocks, of the middle steel plate. By means of the steel damping spherical support, damage, caused by seismic force caused by longitudinal waves, to a bridge body can be avoided, and meanwhile the seismic mitigation and absorption functions are achieved on damage caused by transverse waves; the steel damping spherical support has the advantages of being simple in structure and stable in performance.

Description

technical field [0001] The invention belongs to the technical field of bridge bearings, and in particular relates to an elastic-plastic steel damping spherical bearing for P-wave protection. Background technique [0002] At present, the designed shock-absorbing and isolating spherical bearings are mainly aimed at the seismic force and energy generated by seismic shear waves (S waves), that is, shear waves. The shock-absorbing and isolating devices are used to separate the structure from the movement of the bearings, reducing the impact on However, when an actual earthquake occurs, the longitudinal wave (P wave) is a propulsive wave with a propagation speed of 5.5-7 km / s in the crust and reaches the epicenter first, which makes the beam jump. For some Although important bridges did not collapse in the earthquake, traffic had to be stopped due to severe damage, resulting in serious economic losses. Contents of the invention [0003] The object of the present invention is to...

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Problems solved by technology

[0002]At present, the designed shock-absorbing and isolating spherical bearings are mainly aimed at the seismic force and energy generated by seismic shear The seismic isolation device is used to separate the structure from the movement of the support to reduce damage to the superstructure. However, when an actual earthquake occurs, the longitudinal wave (P wave) is a propulsion wave, and the propagation speed in the crust is 5.5-7 km / s , the first to reach the epicenter, it makes the beam body jump, for some important bridges, although no collapse occurred in the earthquake, but due to severe damage, traffic had to be terminated, resulting in serious economic losses

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