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Steel hoop support system of jacking bridge

A support system and steel pipe support technology, which is applied to bridges, bridge maintenance, bridge reinforcement, etc., can solve the problems of large number of shoulder pole distribution beams, large impact of cover beams, and high cost of foundation disposal, so as to save reinforcement treatment and reduce construction Difficulty and safety risks, the effect of shortening the construction period

Inactive Publication Date: 2013-04-03
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

The main problems are: limited by the force of the bridge pier cover girder, the number of shoulder pole distribution beams is large, and the force of the cover beam is greatly affected during the jacking process; Additional support foundations need to be added, or the existing bridge foundations need to be transformed and used as support foundations, which is expensive, especially under weak ground conditions.

Method used

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  • Steel hoop support system of jacking bridge
  • Steel hoop support system of jacking bridge
  • Steel hoop support system of jacking bridge

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] refer to figure 1 with figure 2 , the jacking bridge steel hoop support system of the present invention comprises the upper end steel hoop 10a and the lower end steel hoop 10b which are fixed on the upper and lower ends of the original reinforced concrete pier column 40 of the bridge by applying pre-tightening force, and installed and fixed on the lower end For the steel pipe support 20 on the steel hoop 10b, a hydraulic jack system 30 is set between the upper steel hoop 10a and the upper end of the steel pipe support 20 . Utilize the upper end steel hoop 10a and the lower end steel hoop 10b to replace the traditional pole distribution beam to directly bear the lifting force of the hydraulic jack system 30, and the foundation of the bracket also adopts the steel pipe bracket 20 supported by the lower end steel hoop 10b, by applying preload The...

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Abstract

Disclosed is a steel hoop support system of a jacking bridge. By the steel hoop support system, the engineering cost for lifting the bridge is lowered, and the construction difficulty and safety risks are reduced. The steel hoop support system comprises an upper-end steel hoop (10a), a lower-end steel hoop (10b) and steel pipe supports (20), the upper-end steel hoop (10a) and the lower-end steel hoop (10b) are fixed to the upper end and the lower end of an original reinforced concrete pier stud (40) of the bridge in a hooped manner by means of exerting pre-tightening force, the steel pipe supports (20) are fixedly mounted on the lower-end steel hoop (10b), and a hydraulic jack system (30) is arranged between the upper-end steel hoop (10a) and the upper end of each steel pipe support (20).

Description

technical field [0001] The invention relates to bridges, in particular to a steel hoop support system for elevating bridges. Background technique [0002] Due to the needs of urban development, many existing bridges cannot meet the needs and need to be renovated. When the bridge only needs to be raised in height, for the bridge structure whose service life has not reached the service life and is in good operating condition, if it is demolished and rebuilt according to the traditional method, it will cause a huge waste of resources. The use of bridge jacking technology to realize the comprehensive utilization of bridges not only achieves the maximum saving of resources, but also saves investment, shortens the construction period, and reduces the impact of traffic. [0003] The traditional simply supported bridge jacking support system is composed of shoulder pole distribution beam, jack hydraulic system, steel pipe support and support foundation. The main problems are: limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
Inventor 庄卫林蒋劲松田波蒋建军林小军周霆黄庆伟卢小峰
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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