Prefabricated small box girder adjustable template for curved bridge

Abstract

A prefabricated small box girder adjustable template for a curved bridge comprises a standard section outer mould, an adjustable section outer mould, a middle diaphragm template, an end diaphragm template, and an inner mould, wherein the adjustable section outer mould is formed by nesting two adjustable section outer moulds, the two outer moulds are in slidable connection through a slide way, the standard section outer mould is sheathed at the rear of the inner mould, the adjustable section outer mould is sheathed at the front of the inner mould, the end diaphragm template is sheathed at the middle of the inner mould, the middle diaphragm template is sheathed at the front of the inner module, and the standard section outer mould, the end diaphragm template, the adjustable section outer mould and the middle diaphragm template are sequentially connected. According to the prefabricated small box girder adjustable template, after the small box girder poured by the template is installed on a bridge, the diaphragm can be ensured to be aligned, the shape of wet joint can be a regular rhomboid, and the cement can be well maintained during demoulding.

Description

technical field [0001] The design of the invention relates to a prefabricated small box girder template, in particular to an adjustable prefabricated small box girder template for a curved bridge. Background technique [0002] With the development of urban roads and highway traffic, small box girder curved bridges have been widely used in urban viaducts and interchanges because they can well meet the needs of bridge positions and terrain constraints. Although the traditional small box girder formwork for curved bridges meets the different requirements of the inner and outer arc lengths of the curved bridge by making formwork of different lengths, the angle of the diaphragm cannot be unified, which often results in the installation of the poured small box girder on the bridge after the transverse diaphragm It cannot be aligned; the angle at the end of the formwork cannot be adjusted, and the shape of the wet joint cannot become a regular parallelogram; the corners of several ...

AI Technical Summary

Problems solved by technology

Although the traditional small box girder formwork for curved bridges meets the different requirements of the inner and outer arc lengths of the curved bridge by making formwork of different lengths, the angle of the diaphragm cannot be unified, which often results in the installation of the poured small box girder on the bridge after the transverse diaphragm Unable to align; the angle at the end of the formwork cannot be adjusted, and the shape of the wet joint cannot become a regular parallelogram; the corners of several adjacent surfaces of the formwork are acute angles, causing the concrete to peel off during demoulding

The problems existing in the production of these traditional small box girder formworks have led to unreasonable stress on the small box girder curved bridge during operation, which is very easy to further induce lateral displacement, twisting and deformation of the main girder of the curved bridge, loss of support, and bridge deck failure. Cracking and other diseases

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