The installation method of the formwork of the solid section of the pier top of the hollow column and slab pier with curved superelevation

Abstract

The invention discloses a method for mounting a curve ultrahigh hollow column plate type pier top solid section template. The method comprises the following steps of erecting an operation platform on each of the two sides of a pier outer platform below a solid section of a pier top, wherein the bottom of the pier outer platform is connected with the outer side of a vertical steel framework in the pier through a steel structure; fixedly connecting a bracket supporting system to the inner side of the vertical steel framework close to the pier outer platform; fixedly connecting a steel frame supporting structure to the upside of the bracket supporting system, lifting and mounting a prefabricated steel truss to the steel frame supporting structure, and connecting a concrete cover plate to the upside of the steel truss to form a mounting platform of the pier top solid section template; finally, erecting the pier top solid section template on the mounting platform, connecting the pier top solid section template to a horizontal steel framework and the vertical steel framework in the pier through split bolts, and forming a whole. The mounting method provided by the invention is not limited by a construction field and is safe, economic and practical, the transition from a hollow section to the solid section of the pier top can be realized, and the stress integrity is better.

Description

Technical field [0001] The invention belongs to the technical field of bridge pier construction, and in particular relates to a method for installing a solid section formwork on the top of a bridge pier. Background technique [0002] For most bridges with a height of less than 50m, the piers are mostly solid piers. The solid piers are generally used to support, distribute and transmit the load of the superstructure by setting up cover beams; for most hollow piers, the solid section of the pier top is generally installed through the formwork Set up scaffolding to solve the problem of vertical load-bearing. [0003] In the construction of bridges spanning deep valleys, sometimes it is necessary to build high bridge piers over 100 meters. In order to reduce the load of the pier's own weight on the foundation, the piers are in the form of thin-walled hollow column slabs, compared with parabolic thin-walled hollow column slab piers The solid bridge pier has the characteristics of small...

AI Technical Summary

Problems solved by technology

However, in the construction of the solid section of the pier top of this type of pier, if the traditional construction method is used, it will bring a lot of construction inconvenience, such as: (1) the inner space of the solid section of the pier top is narrow when the curved pier is used; (2) Since the height of this type of bridge pier exceeds 100 meters, the concrete volume of the solid section and the box girder on the top of the pier is relatively large, so there is a higher requirement for the strength of the support

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