Tension-isolated bearings without additional lateral stiffness

Abstract

The invention relates to a tensile shock insulation support without additional lateral stiffness. The tensile shock insulation support comprises an upper support plate and a lower support plate whichare oppositely arranged, and further comprises a laminated rubber support connected between the upper support plate and the lower support plate, an adjusting hole formed in the lower support plate, adrag cable penetrating through the adjusting hole and connecting the lower support plate with the upper support plate in a dragging mode, and a sliding plate corresponding to the adjusting hole; an adjusting gap is reserved between the drag cable and the hole wall of the adjusting hole; the sliding plate is sleeved with the drag cable and clamped between the lower support plate and a fastener at the corresponding end of the drag cable; and the sliding plate can slide relative to the lower support plate, and the drag cable can be moved and adjusted in the adjusting hole, so that the drag cablekeeps in a vertical state. During support shear deformation, the drag cable can be moved and adjusted to be in the vertical state, the additional lateral stiffness for the support is avoided, and shock insulation performance of the laminated rubber support is ensured.

Description

technical field [0001] The invention relates to the field of building structure engineering, in particular to a tensile shock-isolation bearing without additional lateral displacement stiffness. Background technique [0002] The traditional laminated rubber seismic isolation bearing is formed by laminating a layer of steel plate and a layer of rubber layer by layer, and the rubber and steel plate are firmly bonded together through a special process, and is widely used in the field of seismic isolation of engineering structures. However, the traditional laminated rubber shock-isolation bearing has the following defects: First, the tensile capacity of the support is insufficient: the axial compression stiffness of the laminated rubber shock-isolation bearing is relatively large, while the tensile stiffness is very small, which is only for the compression stiffness 1 / 5 to 1 / 10 of that, the tensile strength is very small, and the current code therefore limits the generation of s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, to provide a tensile shock-isolation bearing without additional lateral displacement stiffness, and to solve the problem of excessive horizontal additional stiffness provided by the prestressed cables in the existing prestressed rubber seismic-isolation bearings. The problem of weakening the seismic isolation performance

Images