Steel structure for uninterrupted traffic column pier bridge jacking

Abstract

The invention discloses a steel structure for uninterrupted traffic column pier bridge jacking, which comprises a column pier, a steel hoop and a beam body, wherein a high-strength anchor bolt is connected between the steel hoop and the column pier, a chemical embedded steel bar glue layer is arranged on the outer surface of the high-strength anchor bolt, a steel gasket is fixedly connected between the high-strength anchor bolt and the steel hoop, and a grouting layer is arranged between the steel hoop and the column pier. Through the effects of the steel hoops, the steel corbels, the high-strength anchor bolts, the grouting layers, the chemical embedded steel bar glue layers and the steel gaskets, the problems that a column-type pier adopted by an existing bridge is high in height, once a support is damaged, the beam needs to be jacked up for support replacement, a reinforced concrete box beam is large in weight and is more than five hundred tons, the area of a column top is generally small, a jack is unable to be placed, if a large support is arranged on the ground, the height of the support is very high, the overturning danger exists, the construction period is long, and the occupied space is large can be solved.

Description

technical field [0001] The invention relates to the technical field of strengthening and reconstruction of bridge structures, in particular to a steel structure for jacking up bridges without interrupting traffic. Background technique [0002] Column type pier refers to a pier whose body is composed of one or several columns. In order to save space and aesthetic needs, many bridge piers, especially road and urban bridges, use column piers, and basin rubber bearings are directly placed on the top of the columns to support the beams above. The beams are generally prestressed concrete box girders or steel beams. For box girders, for prestressed concrete box girders, the weight of the beam body is 500 tons or more. [0003] The applicant found that there are at least the following technical problems in the prior art: 1. At present, the bridge adopts column piers, which are very high. Once the support is damaged, the beam needs to be lifted up to replace the support; 2. The top ...

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Problems solved by technology

[0003] The applicant found that there are at least the following technical problems in the prior art: 1. At present, the bridge adopts column piers, which are very high. Once the support is damaged, the beam needs to be lifted up to replace the support; 2. The top area of ​​the column pier is generally very small. 3. If the support is erected from the ground, the height of the support is very high, there is a danger of overturning, and the construction period is long, occupying a large space; 4. The existing steel hoop plus corbel technology has small bearing capacity, Poor reliability; 5. Due to the existence of risks, the traffic must be interrupted during the construction period. However, due to the characteristics of urban roads, it is almost impossible to interrupt the traffic construction, and the interruption of traffic will have a great impact on regional traffic. Therefore, we propose a A steel structure for jacking up bridges with columns and piers without interrupting traffic

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