A closing section formwork system without removing the outer formwork

Abstract

The invention discloses a closure segment formwork system without dismantling an outer formwork. The closure segment formwork system without dismantling the outer formwork comprises a bottom formwork, the outer side formwork and an inner side formwork; embedded parts are embedded in the ends of cantilever segments of a poured bridge, the bottom formwork and the outer side formwork are fixed on the embedded parts through outer side formwork frameworks, and the inner side formwork is supported in the inner side of a web plate and a base plate of the ends of the cantilever segments of the bridge through inner formwork supports; the bottom formwork, the outer side formwork and the outer side formwork frameworks are within the design contour line of the bridge. After the construction is completed, the bottom formwork, the outer side formwork and the outer side formwork frameworks become one part of a permanent structure of the bridge. A pull rod is not arranged between the inner side formwork and the outer side formwork. The bridge closure segment construction can be achieved on the condition that the safe distance between a proposed bridge and existing buildings such as high-voltage cables under the proposed bridge are limited.

Description

technical field [0001] The invention relates to a formwork system for closing section of bridge construction, in particular to a formwork system for closing section without removing the outer mold. Background technique [0002] In the field of civil engineering technology, especially in the field of bridge engineering construction technology, the cantilever pouring construction method, swivel construction method or cast-in-place construction method of prestressed concrete continuous girder bridge and continuous rigid frame bridge, the cantilever pouring construction method of main girder of cable-stayed bridge or In various construction methods such as the swivel construction method and the prestressed concrete arch bridge swivel construction method, there is the problem that the closing section needs to be cast-in-place. [0003] The usual method of cast-in-place construction of the Helong section is to set formwork, skeleton and support system outside the design outline of...

AI Technical Summary

Problems solved by technology

[0004] Due to the continuous intensification of the construction of the national expressway network, ordinary railway network and high-speed railway network, and the continuous construction of national water conservancy and hydropower facilities and the national grid, it is inevitable to cross existing buildings when building new lines. The safe distance between the lower edge of the building and the existing buildings such as high-voltage lines is limited. If the closing section of the bridge is constructed according to the usual construction method, the clearance can no longer meet the requirements, and the traditional construction method is not feasible.

Under the above-mentioned conditions of insufficient space distance, there is currently no feasible construction method

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