Unloading steel support node structure and construction method of a stiff cantilever structure

Abstract

The invention discloses an unloading steel supporting node constitution of a stiffened cantilevered structure. The unloading steel supporting node constitution comprises at least two section steel supporting beams which are arranged on a concrete constitution column or a steel structure supporting frame and are fixed by embedded parts; a supporting steel plate is arranged at the top ends of the section steel supporting beams, and a screw rod hole allowing a connecting screw rod to penetrate is formed in the supporting steel plate; and an upper nut is arranged at the upper end of the connecting screw rod, and a lower nut is arranged at the lower end of the connecting screw rod. The invention further provides a construction method of the unloading steel supporting node constitution of the stiffened cantilevered structure. The unloading steel supporting node constitution of the stiffened cantilevered structure provided by the invention is compact in structural design and easy to disassemble and assemble; the upper length and the lower length of the connecting screw rod are adjusted, so that accurate positioning of the bottom surface elevation of a steel beam is realized; and therefore, the bottom surface elevation of a section steel beam can be conveniently adjusted.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an unloading steel support node structure of a stiff cantilever structure and a construction method thereof. Background technique [0002] In the construction of building structures, the unloading process of large-span cantilevered transition structures is often encountered. That is to support the steel structure on the temporary steel support first, unload and remove the temporary steel support after the concrete strength of the cantilevered transfer structure meets the design requirements, and the load of the temporary support frame is converted to the load of the structure itself. [0003] The construction method of common unloading temporary steel support joints is simple. Set steel support on the support frame, adjust the elevation of the steel beam, and weld it; set the formwork at the bottom of the beam, and after the pouring and molding reach the design stre...

AI Technical Summary

Problems solved by technology

During the construction process, due to the error of the construction elevation of the structural columns or support frames, the length of the steel support needs to be shortened or supplemented to finally determine and fix the bottom elevation of the beam; due to the existence of the steel support, the bottom support of the rigid beam The mold is difficult, the seams are not strict, and the slurry is easy to leak; the steel cushion box or the steel gasket is not fixed to the structure, and the jack is eccentrically tightened, and it is easy to slide; Corrosion of steel beams affects concrete durability

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