Bridge steel girder shearing pressing bearing type anchoring plate structure

Abstract

The invention belongs to the technical field of bridge structures, and particularly relates to a bridge steel girder shearing pressing bearing type anchoring plate structure. The bridge steel girder shearing pressing bearing type anchoring plate structure comprises an anchoring plate. A notch with the upper end narrower than the lower end is formed in the upper portion of the anchoring plate. An anchoring pipe is embedded in the upper portion of the notch. An upper baffle is welded to the top of the anchoring pipe and an anchoring cushion plate is welded to the bottom of the anchoring pipe. An upper sleeve is arranged on the upper face of the upper baffle. The upper sleeve and the anchoring pipe are coaxial. The anchoring plate comprises two upper anchoring plate bodies and a lower anchoring plate body. A pressure bearing plate is welded to the outer surface of the lower portion of the anchoring pipe. The pressure bearing plate and the anchoring cushion plate are spaced by a certain distance and arranged in parallel. According to the bridge steel girder shearing pressing bearing type anchoring plate structure, the pressure bearing plate is arranged, so that a force transfer way of the structure is added, the structure is stressed safely, force is transferred reliably, anti-fatigue performance is excellent, the problems of stress concentration, local deformation and fatigue cracking of an anchoring structure can be well solved, and the stress safety and the service life of the structure are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, and in particular relates to a bridge steel girder shear compression load-bearing anchor-stayed plate structure. Background technique [0002] The cable-stayed cable-to-steel girder connection structure of a steel-girder cable-stayed bridge is the cable-beam anchorage structure. As a structure that directly bears and transmits the force of the cable-stayed cables, it is one of the most critical and complex stress-bearing areas of the cable-stayed bridge. [0003] At present, the schematic diagram of the cable-beam anchorage structure of the anchor-stayed plate is as follows: figure 1 As shown, it is mainly composed of anchor plate 1, anchor tube 4, anchor backing plate 5 and stiffening plates 9 on both sides. There are generally two methods for anchoring between it and the steel girder. One is to place the anchor The tie plate 1 is directly welded to the bridge deck 14 of the steel gir...

AI Technical Summary

Problems solved by technology

However, the cable force is directly transmitted from the anchor plate structure to the longitudinal web in a single force transmission mode, and the force on the longitudinal web and the anchor plate is relatively large, especially at the weld between the anchor plate and the bridge deck, and the anchor plate. Stress concentration, local deformation, fatigue cracks and other problems are prone to occur at the welds with the anchor tube and the upper fillet of the anchor plate opening

Images