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A bridge beam lifting system mounted on a pier

A technology for bridge piers and bridges, which is applied in the field of bridge beam lifting equipment to achieve good synchronous lifting, improving effect, fixing effect and good stability.

Inactive Publication Date: 2018-12-18
YANGTZE NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide a simple structure, which can avoid excessive local stress at the jacking position, improve jacking synchronism, and improve fixing reliability and device stability. Bridge girder lifting system on bridge piers

Method used

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  • A bridge beam lifting system mounted on a pier
  • A bridge beam lifting system mounted on a pier
  • A bridge beam lifting system mounted on a pier

Examples

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0037] The best embodiment: as Figure 1 to Figure 3As shown, a bridge girder body lifting system installed on a bridge pier includes a bridge pier fixing device and a lifting assembly. The bridge pier fixing device includes two oppositely arranged fixing pieces 1, and the fixing piece 1 is vertically arranged and has an arc shape in the horizontal direction. The fixed piece 1 is fitted and fixed along the circumferential surface of the bridge pier 2, and there is a gap for deformation between the two fixed pieces 1. Solid deformation fastening bolts 3, a horizontal support platform is formed on the upper surface of the pier fixing device, and the lifting assembly includes an upward jack 4 arranged on the support platform along the circumferential direction of the pier, wherein the lifting assembly also includes an overall horizontal ring....

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Abstract

The invention discloses a bridge beam lifting system installed on a bridge pier, includes pier fixtures and lifting assemblies, An upper surface of that pier fix device is formed with a horizontal support platform, the lifting assembly includes an upward jack disposed on the support platform in the circumferential direction of the pier, characterized in that the lifting assembly further comprisesa horizontal annular force equalizing ring, wherein the force equalizing ring is sleeved outside the bearing at the upper end of the pier, the upper surface of the force equalizing ring is a jacking force applying surface which is connected with the bridge, and the lower surface of the force equalizing ring is a jacking force receiving surface which is connected with the upper end of the jack. Theintegral lifting system of the beam body of the bridge without the cover beam of the lower structure is simple in structure, good in fixing effect and stability, convenient in construction, capable of better realizing synchronous jacking and protecting the safety of construction.

Description

technical field [0001] The invention relates to the field of highway bridge engineering, in particular to a bridge girder lifting device installed on the top of a pier. Background technique [0002] At present, most of the bridges in service in my country (especially curved continuous box girder bridges) will experience different degrees of expansion joint failure after several years of use, such as: shear failure, bulging on both sides, etc.; in addition, a large number of bridges Certain longitudinal and lateral displacements will occur under various dynamic effects (such as earthquakes, vehicle and ship collisions, etc.), and also under some static effects (such as: expansion joints are stuck, temperature effects, eccentricity of static and dynamic loads, etc.) Displacement in any direction is generated and gradually accumulated over time. These bridges with beam deflection have seriously threatened the safety of road operation. In addition, it is very necessary to lift th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 赵成功王小冬黄谦任伟王超游强杨德厚翟磊
Owner YANGTZE NORMAL UNIVERSITY
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