Active pressure-bearing bearing

Abstract

The invention discloses an active pressure-bearing bearing comprising an upper anchor bolt steel plate and a lower anchor bolt steel plate, wherein the upper anchor bolt steel plate is arranged in parallel above the lower anchor bolt steel plate; a fixing bottom plate, a concave-convex plate, a concave spherical body, a convex spherical body, a stainless steel plate and a long bottom plate are sequentially arranged between the upper anchor bolt steel plate and the lower anchor bolt steel plate from top to bottom; the fixing bottom plate is connected with the concave-convex plate in an up-downsliding manner; a high-elasticity rubber ring sleeved on a first boss is clamped between the fixing bottom plate and the concave-convex plate; a rubber seat cushion is sandwiched between the concave-convex plate and the concave spherical body; one of silicone grease plates is sandwiched between the concave spherical body and the convex spherical body; another one of the silicone grease plates is sandwiched between the convex spherical body and the stainless steel plate; a lateral position-limiting device is fixedly arranged on the upper plate surface of the long bottom plate; the stainless steel plate is positioned in the lateral position-limiting device; and the lower anchor bolt steel plate is fixed to the long bottom plate through threaded fasteners. The active pressure-bearing bearingsolves the technical problem that parts in all layers of a bridge bearing can not be in close contact with each other in the case of no load on the bridge bearing.

Description

technical field [0001] The invention relates to a bridge bearing, in particular to an active pressure bearing bearing in which components of various layers can be in close contact under the action of no load. Background technique [0002] The main girder of the bridge is too long, and factors such as concrete shrinkage and creep, temperature difference changes, and earthquakes will cause large longitudinal displacements of the bridge. The form of the hinged structure (that is, the connecting hinge) is set on the upper branch, such as figure 1 Shown (P12-P37 refers to piers). The connecting hinge must not only meet the load-bearing capacity requirements under normal operation, but also have the ability to release the longitudinal relative displacement of the main girders on both sides of the mid-span, and restrain the vertical and lateral relative deformation and relative rotation of the two ends of the main girder. [0003] The bridge projects using connecting hinges at ho...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an active pressure-bearing bearing, which solves the problem that under the action of no l

Images