Large-span stiff beam screw-free structure and construction method thereof

Abstract

The invention discloses a large-span stiff beam screw-free structure which comprises a beam steel framework, a beam outer frame and connecting plates. The beam outer frame is in a U shape and formed by connecting two side plates and a bottom plate. The beam steel framework is fixed in the beam outer frame. The connecting plates are fixed between the beam steel framework and the two side plates of the beam outer frame as well as between the bottom of the beam steel framework and the bottom plate of the beam outer frame. The invention further discloses a construction method of the large-span stiff beam screw-free structure. The method comprises the following steps that 1, the beam steel framework is formed by splicing; 2, hoops and longitudinal bars are bound to the periphery of the beam steel framework; 3, the bottom plate of the beam outer frame is placed, the beam steel framework is hoisted to the position above the bottom plate, the connecting plates are welded between the bottom of the beam steel framework and the bottom plate, the two side plates of the beam outer frame are welded to the two sides of the bottom plate of the beam outer frame, and the connecting plates are welded between the beam steel framework and the two side plates; 4, the beam steel framework and the beam outer frame which are welded into a whole are hoisted to the position needing fixation and fixedly connected with a building floor; and 5, concrete is poured into the beam outer frame.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a screw-free structure of a large-span stiff beam and a construction method thereof. Background technique [0002] At present, the construction of stiffened concrete beams needs to set up floor-standing support frames and operating frames, and traditional wooden formwork is required to seal and remove the formwork, and the wooden formwork needs to be reinforced with tensioning screws. Components, so it is difficult to set the pull screw. At the present stage, one is to use a double-turning anti-tension screw, and two anti-tension screws are arranged on the edge of the steel section, but this method is not suitable for large-section steel beams; The pulling screw is welded on the profiled steel flange and is cut off after the formwork is removed, but this method is very wasteful and troublesome in construction. Contents of the invention [0003] The technical pro...

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Problems solved by technology

[0002] At present, the construction of stiffened concrete beams needs to set up floor-standing support frames and operating frames, and traditional wooden formwork is required to seal and remove the formwork, and the wooden formwork needs to be reinforced with tensioning screws. components, so it is difficult to set the pull screw

At the present stage, one is to use a double-turning anti-tension screw, and two anti-tension screws are arranged on the edge of the steel section, but this method is not suitable for large-section steel beams; The pull screw is welded on the flange of the profile steel and cut off after the formwork is removed, but this method is very wasteful and the construction is troublesome

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