A Large Deformation Rubber Bearing with Combination Sections to Reduce Shear Stiffness

Abstract

The invention discloses a large-deformation rubber bearing with reduced shear stiffness in combined section, which comprises an upper top plate, a lower roof and a plate-type rubber bearing arranged between them. The inside of the plate-type rubber bearing is hollowed out, and the hollowed out A multi-layer sliding rubber bearing is provided, the shape of the multi-layer sliding rubber bearing is adapted to the shape of the hollowed out part, and the multi-layer sliding rubber bearing includes sliding plates, rubber sheets and thin steel plates arranged in layers. The present invention forms a combined cross-section by placing a multi-layer sliding rubber bearing on the hollow plate rubber bearing, so that the bearing has multi-layer sliding ability, and sliding occurs as much as possible without instability. By adjusting the multi-layer sliding The stiffness of the support can be controlled by adjusting the area ratio of the support and the reserved plate rubber support and adjusting the number of layers of the sliding surface of the multi-layer sliding support.

Description

technical field [0001] The invention relates to bridge engineering and anti-seismic fields, in particular to a plate type rubber bearing capable of multi-layer constrained sliding in earthquakes, which can reduce stiffness and increase deformation and energy dissipation capacity, and in particular to a composite section Large deflection rubber bearings for reduced shear stiffness. Background technique [0002] With the development of my country's economy and technology, the demand for seismic resistance of bridges is getting higher and higher. Although ordinary plate rubber bearings are simple in structure and easy to manufacture and install, their shear stiffness is too large, and their horizontal deformation capacity and energy dissipation capacity are too low. Although the sliding plate bearing can have a large horizontal displacement, its horizontal stiffness is too low, which is easy to cause instability, so it needs to be used with a fixed bearing, and the fixed pier mu...

AI Technical Summary

Problems solved by technology

However, lead is a poisonous substance to the human body, and it is easy to cause pollution to the environment during the process of manufacture, use, and maintenance. The disposal of waste lead cores after the replacement of the support is also an environmental problem that cannot be underestimated.

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