Prefabricated box girder formwork and construction method applying formwork

Abstract

The invention relates to a prefabricated box girder formwork and a construction method applying the formwork. The prefabricated box girder formwork comprises a bottom form, two side forms, a fixed endform, a movable end form and an inner form arranged between the two side forms. A pedestal is arranged below the bottom form, and first supports are arranged on the sides, away from each other, of the two side forms. The inner form comprises a horizontally-arranged top formwork and two side formworks arranged on the two sides of the top formwork correspondingly, a supporting mechanism is arrangedin the inner form, and the supporting mechanism comprises a top frame fixedly connected to the lower portion of the top formwork, side frames fixedly connected to the opposite sides of the two side formworks and a horizontally-arranged supporting truss. The upper edges of the two side frames are hinged to the edges of the two sides of the top frame correspondingly, multiple top form jacks used for supporting the top frame are arranged at the top of the supporting truss, the supporting truss is hinged to multiple lateral hydraulic rods used for controlling the two side formworks to rotate, andthe supporting truss is provided with multiple tail end supporting jacks connected to the fixed end form, the movable end form or the ground in an abutting manner. By means of the prefabricated box girder formwork, formwork removal is convenient.

Description

technical field [0001] The present application relates to the field of building construction formwork, in particular to a prefabricated box girder formwork and a construction method using the formwork. Background technique [0002] A kind of beam in box girder bridge engineering. Its interior is hollow, with flanges on both sides of the upper part. Its structure is similar to that of a box, so it is named. The box girder of reinforced concrete structure is divided into prefabricated box girder and cast-in-place box girder. At present, bridge standardization and factoryization are being promoted continuously, and prefabricated components are more and more widely used. Prefabricated box girder also has greater rigidity, strong torsional performance and The advantages of simple structure are widely used in municipal, highway and railway bridges. In the process of concrete pouring, in order to reduce the inner formwork of the precast box girder, it will float up due to the extr...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that in actual use, the traditional internal formwork is composed of several formworks. After the internal formwork is connected and fixed as a whole by section steel, it is put in as a whole in segments and then adopted along the longitudinal direction of the box girder. Bolt connection, installation and form removal are relatively complicated

Images