Box girder internal template system for large-span ultra-high warping body

Abstract

The invention discloses a box girder internal template system for a large-span ultra-high warping body. The box girder internal template system for the large-span ultra-high warping body comprises an internal template frame with an overloading horizontal shifter, and an internal template installed on the internal template frame. The internal template comprises a roof, a top corner die, a middle flat die and a bottom corner die, the top corner die is connected above the middle flat die, the bottom corner die is connected below the middle flat die, the roof is connected to the upper end of the top corner die in an overlapping way, a steel truss used for supporting the internal template, and an internal template frame top frame are arranged on the internal template frame, an internal template hydraulic system used for adjusting the internal template is arranged on the steel truss, and an internal template threaded rod system used for slightly adjusting and fixing the internal template is also arranged between the internal template frame and the internal template. The box girder internal template system for the large-span ultra-high warping body can meet the requirement of various structure changes for precasting large segmental box girders, solves the difficulty of diverse changes of inner core templates of segmental box girders for ultra-high warping bodies, decreases the security risk of construction under the condition of guaranteeing the quality of box girders, shortens the processing and assembly man-hour, and effectively reduces the labor intensity of workers.

Description

technical field [0001] The invention relates to a box girder internal formwork system, which belongs to the technical field of bridge prefabricated box girder pouring, in particular to a novel box girder end formwork system which can fine-tune the transverse slope of the box girder and adapt to changes in height and web. Background technique [0002] For short-line matching segmental beam prefabrication, the formwork design and application of short-line prefabricated segmental beams on straight lines and equal heights are relatively mature at home and abroad. If the cross slope of the bridge deck is within the bridge length of 65m, the cross slope gradually changes from +2% to -2%. K6+666.779~K6+731.779 is the superelevation gradient section, 65m long, the cross slope of the left bridge is -2%, and the cross slope of the right bridge is +2%. The formwork system needs to prefabricate multiple groups of different types of end formwork systems according to different sections o...

AI Technical Summary

Problems solved by technology

The invention has the characteristics of easy operation and use, good box girder forming quality, fast demoulding speed, and high production efficiency; however, this invention is only suitable for use in the same type of box girder inner mold design, and cannot meet the requirements of large span and ultra-high twist The box girder of the body is made, and the inner mold support frame of the invention is not enough to support the box girder of the long-span and ultra-high twisted body

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