Fabricated bridge integrated construction platform and construction method

Abstract

The invention provides an assembly type bridge integrated construction platform and a construction method, and relates to the technical field of bridge erecting equipment, the assembly type bridge integrated construction platform comprises a main beam and a front supporting leg, the front supporting leg is arranged on the main beam and suitable for moving in the length direction of the main beam, and the front supporting leg comprises a first stand column, a second stand column and a first cross beam; the first cross beam comprises a first cross beam body and a first groove structure, the first groove structure is arranged on the first cross beam body, a notch of the first groove structure faces the pier body, and the first stand column is connected with the part, located on one side of the first groove structure, of the first cross beam body; the second stand column is connected with the part, located on the other side of the first groove structure, of the first beam body. The first stand column and the second stand column are suitable for being supported on a bearing platform. The front supporting legs can meet the requirement for the pier body installation space, the additional bending moment applied to the bearing platform is reduced, and construction of the integrated construction platform is safer under the condition that pier body assembling is not affected.

Description

technical field [0001] The invention relates to the technical field of bridge erection equipment, in particular, to an integrated construction platform and construction method of a prefabricated bridge. Background technique [0002] The construction of the bridge can be divided into two parts: the construction of the lower support structure and the construction of the upper deck structure. The lower supporting structures of bridges, such as piers, are mostly constructed by cast-in-place construction. The construction period is relatively long, the quality is not easy to control without prefabrication, and it is easily limited by the influence of construction access roads, and it is easy to cause damage to the environment. Therefore, prefabricated bridges Prefabricated construction has become a development trend. [0003] Since the prefabricated bridge components such as the pier body, the pier top block and the segmental box girder are assembled at the construction site, th...

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Problems solved by technology

[0004] In the existing integrated construction platform, the front outriggers are usually supported on the caps of the pier body to be assembled. In order not to hinder the subsequent assembly of the pier body on the caps, this requires the support of the front outriggers on the caps. There is a sufficient distance between the support position and the center of the cap in the vertical bridge direction, so as to avoid the installation space of the pier body. Usually, the cap is supported by a number of evenly distributed pile foundations, and the upper end surface of the cap is The area of ​​the pier is larger than the bottom area of ​​the pier body, and the pier body is assembled at the center of the cap. In order to save construction costs, the size of the cap above the longitudinal bridge and the distribution range of the pile foundation mostly only need to meet the stress requirements of the bridge itself. In this way, not only is there not enough extra dimension to open the distance between the front outrigger and the pier body to be assembled, but also the edge of the cap is not capable of bearing the excessive additional bending moment brought by the construction load. Therefore, once the construction load brings If the additional bending moment is too large, it will easily cause the edge of the platform to break, and even cause the construction platform to collapse in severe cases, posing a risk of safety accidents

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