Prefabricated steel-concrete combined beam structure and its implementation method

Abstract

The invention discloses a fabricated steel and concrete composite beam structure and an implementation method thereof. The fabricated steel and concrete composite beam structure disclosed by the invention is formed by a concrete beam, steel and concrete combined sections and short steel beams; the concrete beam consists of concrete, reinforcements, drilling devices and prestressed cables; each short steel beam consists of section steel, stiffening ribs and end plates; each steel and concrete combined section is formed by shear keys, concrete, stiffening ribs, an anchorage system, reinforcements, end plates, an upper steel flange plate and a lower steel flange plate; the steel and concrete combined sections are transition sections between the concrete beam and the short steel beams; the concrete and steel flanges of the steel and concrete combined sections are connected by the shear keys to bear an external force together. The prestressed cables are arranged in the concrete beam and the steel and concrete combined sections; the corresponding end plates are arranged at both ends of the short steel beams; the short steel beams are connected with a steel and concrete combined column in a bolt or welding mode. According to the fabricated steel and concrete composite beam structure and the implementation method thereof, which are disclosed by the invention, rapid fabricating construction is adopted, so that cost is reduced; full-factory prefabrication is adopted, so that component quality is ensured; excellent properties of two materials of steel and the concrete are sufficiently played, so that mechanical performance of the structure is improved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an assembled steel-concrete combined beam structure and an implementation method thereof. Background technique [0002] In the current construction projects, the structural forms of beams mainly include: reinforced concrete beams, steel beams and steel concrete beams. The construction mode of concrete beams mainly adopts traditional on-site pouring construction, which is difficult for industrialized large-scale production. This construction mode has problems such as high energy consumption, high pollution, low efficiency, and extensive construction, which is incompatible with the current development requirements of new urbanization, industrialization, and informationization. Not compatible. Although steel beams can be connected to steel nodes by bolts or welding for assembly construction to speed up construction, the construction cost of steel struct...

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Problems solved by technology

The construction mode of concrete beams mainly adopts traditional on-site pouring construction, which is difficult for industrialized large-scale production. This construction mode has problems such as high energy consumption, high pollution, low efficiency, and extensive construction, which is incompatible with the current development requirements of new urbanization, industrialization, and informationization. not compatible

Although steel beams can be connected to steel nodes by bolts or welding for assembly construction to speed up construction, the construction cost of steel structures is high, anti-corrosion and fire prevention technology is difficult, and maintenance costs are high after delivery; Solve the problem of anti-corrosion and fire prevention of steel, but it is more difficult to pour concrete outsourcing, the amount of steel used is higher than that of reinforced concrete beams, and the connection with concrete columns is also more difficult, generally only used in special positions of building structures

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