An integral hoisting device and method of using variable curve cast-in-place beam bottom web reinforcement

Abstract

The invention discloses an integral hoisting device for the bottom web steel bars of variable curve cast-in-place beams and a method for using the same. Beam formwork, one side of the formwork is provided with support rods, the prefabricated tire frame of the bottom web steel bar is a simple tire frame, and the prefabricated tire frame of the bottom web steel bar includes channel steel, I-beam, smooth round steel bar, etc. , the bottom web reinforcing bar comprises base plate reinforcing bar, web reinforcing bar, steel strand and crossbeam reinforcing bar, both sides of the prefabricated tire frame bottom of bottom web reinforcing bar are all provided with support, by adopting numerical formwork bottom web reinforcing bar horizontal partition Measures such as the position of the beam, the hanger with high rigidity that can flexibly change the lifting point, the track and anchorage setting that is easy to install and disassemble and has a good limit effect, and the simple adjustment of the thickness of the protective layer of the steel skeleton can effectively solve the above problems and improve the operability of the construction. Sex, reduce process time, improve efficacy, and have certain value for similar engineering construction in the future.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a device for integrally hoisting steel bars at the bottom of a variable-curve cast-in-place beam and a method for using the same. Background technique [0002] The overall hoisting of the steel frame has obvious advantages in the construction period due to the staggering of the steel bar binding and other processes from the formwork construction and concrete construction, and can improve the utilization rate of equipment and reduce labor idleness. At present, the overall hoisting of reinforced skeletons has been widely used in the construction of prefabricated beams, cast-in-place beams, caps, and piers at home and abroad. The cast-in-place girder span is about 50m, and the bridge line is a small-radius "S"-shaped variable curve, with alternating transverse and longitudinal slopes. The maximum length of the beam section that needs to be integrally hoisted for the bot...

AI Technical Summary

Problems solved by technology

[0004] (1) There are horizontal and vertical curve changes in cast-in-place beams, changes in the position and angle of the pier top transverse beam, and the support has support bolts extending into the steel skeleton of the cast-in-place beam. If the prefabricated steel skeleton of the bottom web is not in place, It may cause problems such as failure to install, or even invalidation of the steel skeleton.

Images