Single-column pier beam bridge and reinforcing and reconstructing method thereof

Abstract

The invention relates to a single-column pier beam bridge and a reinforcement and transformation method of the single-column pier beam bridge, and belongs to the technical field of bridge reinforcement and transformation. The method comprises the following steps: (1) measuring an inclination angle between a main beam side part and a pier side part; (2) prefabricating an anti-overturning device, wherein the anti-overturning device comprises a wedge-shaped mother plate, a pull rod clamping groove and a pull rod; (3) driving anchor bolts into the preset positions of the side surface parts, and fixing the upper wedge-shaped mother board and the lower wedge-shaped mother board on the corresponding side surface parts by using nuts; (4) the two expansion ends of each pull rod are clamped into thegroove cavities of the upper pull rod clamping groove and the lower pull rod clamping groove from the open ends of the clamping grooves, and movable gaps can be reserved between the two expansion ends of each pull rod and the cavity walls of the corresponding clamping groove cavity; and (5) filling a groove cavity of the pull rod clamping groove with a non-hydrophilic lubricant, and sealing the groove cavity of the pull rod clamping groove to form a sealed cavity. The reinforcement and transformation method is convenient to construct, low in cost and convenient to replace in the subsequent maintenance process, and can be widely applied to the field of bridge reinforcement and transformation.

Description

technical field [0001] The invention relates to the technical field of bridge reconstruction and reinforcement, in particular to a single-column pier-beam bridge with an anti-overturning device and a method for reinforcing and reconstructing the existing single-column pier-beam bridge. Background technique [0002] The single-column pier-beam bridge is more commonly used in the erection of viaducts because it uses a single-column pier to support the main girder slab, which occupies a small area and is low in cost. [0003] In order to make full use of the small footprint of the single-column pier and facilitate its use in urban viaducts with a small area of ​​land, and to overcome the defect that it is easy to overturn when one side is overloaded, a patent document with the notification number CN203096599U discloses a The anti-overturning device of tension-and-tension bar steel and concrete composite girder bridge includes a web, a support, a cover beam and a pier column, th...

AI Technical Summary

Problems solved by technology

The anti-overturning device improves the anti-overturning performance of the main girder by setting tension and compression bars, but this structure is difficult to improve the anti-overturning performance of a large number of single-column pier-beam bridges that have been built in existing roads

[0004] In order to solve the technical problems in the technical solutions of the above patent documents, a patent document with the notification number CN203160116U discloses an anti-overturning bridge pier mechanism, which includes pier columns, carbon fiber cloth, steel hoop components, six support columns and Multiple connectors; the steel hoop assembly includes two horizontal support plates, two semicircular cylinders, four connecting plates, multiple semicircular rib plates, multiple support rib plates and multiple rectangular rib plates; two A semi-circular cylinder is formed into a circular cylinder through four connecting plates. The horizontal support plate is provided with a support column, and the horizontal support plate is arranged on the upper surface of the circular cylinder. The upper end of each support rib is corresponding to The lower surface of the horizontal support plate is connected, the carbon fiber cloth is wound on the top of the pier column, and the circular cylinder is set on the carbon fiber cloth outside the pier column; the pier mechanism designed based on this structure can be well adapted to the existing single-column pier Retrofit, but it has the following problems, not only because of the need to improve the anti-overturning support of the main girder, it cannot be retrofitted quickly, the cost is high, and it is not easy to retrofit when problems occur

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