Dry connection method of concrete slab and steel beam of steel-concrete composite beam

Abstract

A dry connection method for a concrete slab of a steel-concrete composite beam and a steel beam, the steps of which are: A, making a positioning template; B, making a steel plate connector: welding the lower end of the shear connector to the connecting plate surface; insert the connecting rod into the positioning hole of the positioning template, temporarily fix the connecting rod and the positioning template, and then fix the connecting rod with the lower surface of the connecting plate, then remove the temporary fixation, and remove the positioning template; C, steel plate connection The connection between the device and the concrete slab: pre-embed the shear connector in the concrete slab; and expose the connecting rod and the connecting slab; D. The connection between the concrete slab and the steel beam: clamp the positioning formwork on the upper flange of the steel beam, and The position of the positioning hole of the positioning template is drilled to connect the through hole; the positioning template is removed; the connecting rod is inserted into the connecting through hole, and finally the connecting rod is fixed on the lower surface of the upper flange plate of the steel beam to form a steel-concrete composite beam. The method can reduce the site construction amount and environmental pollution, and accelerate the construction speed.

Description

technical field [0001] The invention belongs to a method for connecting a concrete slab and a steel beam of a steel-concrete composite beam. Background technique [0002] Steel-concrete composite beam is a new type of structure developed on the basis of steel structure and concrete structure. It resists the lifting and relative sliding of the two at the interface by setting shear connectors (bolts, channel steel, bending bars, etc.) between the lower steel beam and the upper concrete flange (concrete slab) , so that the steel beam and the concrete slab work together as a beam that works as a whole. In the steel-concrete composite beam, the existing connection method between the steel beam and the concrete slab is: one end of the shear connector is welded to the steel beam on site, and the rest of the shear connector is poured into the concrete slab, so that the steel beam Connected to the concrete slab as a whole. This connection method requires on-site pouring of concret...

AI Technical Summary

Problems solved by technology

This connection method requires on-site pouring of concrete. There are a lot of steel bar binding, connection work and concrete pouring work. The construction period is long and environmental pollution cannot be avoided. Once the concrete slab and steel beam are connected as a whole, they cannot be disassembled and it is difficult to reuse

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