Anti-overturning reinforcing and supporting device of single-column pier girder bridge

Abstract

The invention discloses an anti-overturning reinforcing and supporting device of a single-column pier girder bridge. According to the anti-overturning reinforcing and supporting device of the single-column pier girder bridge, one side of a pier (2) is provided with a pier bearing steel plate (4) in the transverse direction of the bridge, the bottom of a girder (1) on the same side is provided with a girder arc bearing steel plate (9), an H-shaped steel supporting structure (7) is hinged to the pier bearing steel plate (4) through a hinge steel plate (5), hinge balls (8) are hinged to the H-shaped steel supporting structure (7) and embedded into the girder arc bearing steel plate (9), the hinge balls (8) and the girder arc bearing steel plate (9) are in sliding / rolling contact, and thus a steel structure supporting system for connecting one side of the pier (2) in the transverse direction of the bridge with a bottom plate of the girder (1) on the same side is formed; the same reinforcing and supporting structure is established on the other side symmetrical to the pier (2), finally a single-point supporting system of the single-column pier girder bridge is reinforced and supplemented, a three-fulcrum multi-point supporting system including an original supporting seat is formed, and the purpose of anti-overturning reinforcing of the single-column pier girder bridge is achieved.

Description

technical field [0001] The invention relates to an anti-overturning reinforcing support device for a single-column pier beam bridge. Specifically, by setting hinged I-beams between the pier and the main girder, the auxiliary support system of the main girder is added in addition to the single fulcrum of the original single-column pier, and the sliding between the main girder arc supporting steel plate and the hinged sphere is adopted. / Rolling to meet the needs of the longitudinal displacement of the main girder during the operation phase, thus forming a single-column pier girder bridge anti-overturning reinforcement support device. The anti-overturning reinforcing support device for a single-pillar pier beam bridge is suitable for structural reinforcement by adding a support system to a single-pillar pier beam bridge that already has a hidden danger of overturning, thereby preventing catastrophic collapse of the bridge and avoiding casualties. Background technique [0002]...

AI Technical Summary

Problems solved by technology

However, it is very difficult to install the support of this type of method. The limited installation space and the need to lift the main girder during installation will greatly limit the effectiveness and practicability of this method; Set support members (such as steel structures) between them to increase the support stiffness. Since the connection between the support members and the pier and the main girder is generally a rigid connection, this rigid connection will greatly limit the longitudinal direction of the main girder under the effects of temperature, shrinkage and creep Bridgewise displacement and angular displacement, once the displacement occurs but is limited, under the action of secondary internal force, it will destroy the reinforced support device in turn, greatly reducing its anti-overturning effect

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