Prefabricated assembled steel-concrete composite beam connected by adopting high-strength bolt

Abstract

The invention discloses a prefabricated assembled steel-concrete composite beam connected by adopting a high-strength bolt. The composite beam main comprises a steel beam, a prefabricated reinforced concrete slab and a shearing resistant bolt connection pair, wherein reasonable structural measures are reserved on the steel beam and the prefabricated concrete slab, and the shearing resistant bolt connection pair is adopted to connect the steel beam with the prefabricated concrete slab, so that compared with a situation that the beam-slab connection part is in rigid connection and the shear capacity is not substantially reduced, strong ductility and deformability can be obtained. When a prefabricated slab needs to be replaced, by detaching the nut of the shearing resistant bolt, the prefabricated slab is separated from the steel beam, so as to realize detaching and replacement of the prefabricated slab. All components adopted in the invention are assembled and connected on site, so that field welding work and template engineering can be reduced, the industrial assembly efficiency of buildings is improved, the function of detaching, separating and replacement of the beam-slab main body structure of the assembled composite structure can be achieved, and the novel architectural concept of capability of detachment and energy conservation and environment protection of building components can be embodied.

Description

technical field [0001] The invention belongs to the technical field of engineering structures, and is specifically applicable to multi-high-rise assembled steel-concrete composite structure beam-slab floor structure systems and bridge structure systems. Background technique [0002] The "Twelfth Five-Year Plan" of the construction industry proposes to actively promote the industrialization of construction, and the development of prefabricated buildings is a major way to realize the industrialization of construction. At present, domestic prefabricated concrete buildings are adopted by some engineering projects due to their advantages of fast construction speed and high quality level. However, due to their disadvantages such as high production cost, difficult construction and non-removable modification, they cannot meet the design or construction requirements in many building forms. , To a large extent, it limits the development of prefabricated concrete buildings. At the sam...

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Problems solved by technology

[0005] In most traditional multi-high-rise residential buildings, cast-in-place reinforced concrete structures are generally used. In order to avoid the stress concentration phenomenon in the connection parts of the steel bars, more complicated structural measures need to be set up to ensure that the stress is reasonable, resulting in a large amount of materials and poor structure. Complicated, difficult to design, difficult to construct and bulky in structure, affecting the beauty and use of the building

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