Arc-shaped steel spring plate vibration isolation support of friction pendulum

Abstract

The invention relates to an arc-shaped steel spring plate vibration isolation support of a friction pendulum in the field of buildings, bridges and sluices engineering. The arc-shaped steel spring plate vibration isolation support comprises an upper support plate, a column upper sliding block, a column biconvex spherical lower sliding block and a lower support plate, wherein the lower part of the upper support plate is provided with a circular sealing plate, the outer wall of the lower part of the upper support plate is connected with the upper surface of the column upper sliding block, an arc-shaped steel spring plate elastic assembly connected with the column upper sliding block is arranged between the column upper sliding block on the outer wall of the lower part of the upper support plate and the circular sealing plate, a concave spherical surface of the column upper sliding block is connected with an upper convex spherical surface of the column biconvex spherical lower sliding block, and a lower convex spherical surface of the column biconvex spherical lower sliding block is positioned in a concave spherical surface of the lower support plate. The vibration isolation support has simple structure, large vertical loading capacity, good durability and remarkable vibration reduction and isolation effects, can freely rotate in various directions, and is suitable for buildings, bridges, sluices and other structures in a strong earthquake region.

Description

technical field [0001] The invention relates to shock-absorbing and isolating support devices for buildings, bridges, aqueducts and other structures, in particular to a friction swing bow type spring steel plate shock-isolating support. Background technique [0002] When building important structures such as bridges, aqueducts, and buildings in earthquake areas, in order to reduce the potential earthquake threat, it is necessary to carry out seismic design for such structures, and adopting seismic isolation design is one of the effective ways to reduce earthquake damage and damage of structures. Seismic isolation technology It is to reduce the basic frequency of the structure and prolong its vibration period by setting a seismic isolation layer with low stiffness between the bottom of the structure and the top surface of the foundation, so as to avoid the main energy frequency band of the earthquake and isolate the upper structure from the earthquake vibration. Come, reduce ...

AI Technical Summary

Problems solved by technology

[0004] Due to the low vertical bearing capacity and poor durability of various rubber bearings, they cannot be used alone in large structures with heavy superstructures and large horizontal displacement requirements.

[0005] The friction pendulum system has a good effect on small and medium-span bridges, but due to a single friction surface, its stiffness and damping characteristics cannot be changed during the movement of the support, and there is no self-adaptive performance

Under strong earthquakes, the amplitude of horizontal displacement is limited, and it is difficult to ensure the large displacement of upper and lower structures such as long-span bridges and aqueducts under strong earthquakes

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