Irregular shape shock insulation support having high bearing capacity

Abstract

The invention discloses an irregular shape shock insulation support having a high bearing capacity. The irregular shape shock insulation support consists of the alternately overlapped portions of an upper sealing plate, a lower sealing plate, an elastomer and a reinforcing plate. With respect to other shock insulation supports having rectangular vertical cross sections, when the irregular shape shock insulation support is in a horizontal ultimate deformation state, the effective bearing area of the shock insulation support under an ultimate shearing deformation state is increased by means of haunching on the top and at the bottom of the support, and the concentrated stress of the reinforcing plate is reduced, thereby greatly increasing the vertical bearing capacity of the shock insulation support; meanwhile, the upper sealing plate and the lower sealing plate are in the same size, accordingly providing convenience to the installation and the construction, and being able to meet the requirements of buildings and equipment to the shock insulation support having the high bearing capacity.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a special-shaped shock-isolation bearing with high bearing capacity for dissipating earthquake energy, which is arranged between the foundation and the superstructure of buildings, structures and equipment. Background technique [0002] Seismic isolation technology is an effective method to limit the seismic energy entering the upper structure by increasing the damping ratio of the building structure and reducing the structural period. Under the action of vertical load, the traditional columnar seismic isolation bearing has a large bearing capacity, but when the lateral displacement of the bearing continues to increase, the effective bearing area of ​​the seismic isolation bearing will decrease accordingly, and the stiffening plate inside the bearing Local stress concentration is gradually formed. When the seismic isolation bearing reaches the ultimate shear deformation, the inte...

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Problems solved by technology

However, since the shape of these two types of patents is cylindrical, when the seismic isolation bearing reaches the ultimate shear deformation, the internal interlayer stiffener will fail due to the stress concentration exceeding the material yield strength, and the material strength of the bearing body cannot be fully utilized.

Patent No. ZL102296703 A discloses a horizontal displacement seismic isolation bearing. The bearing body is in the shape of a truncated cone or a prism. The vertical section of the vibration isolation bearing is an isosceles trapezoid. However, it will increase the horizontal stiffness of the isolation support, which will inevitably affect the isolation effect of the isolation device. At the same time, the size of the top of the isolation support is large and the size of the bottom is small, so it is necessary to use different The size of the upper and lower connecting plates, and the size of the support members in the actual project should generally be the same, so as not to cause difficulties in the installation and construction of the support

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