A Prefabricated Double Dovetail Steel-Concrete Composite Beam Connected by Studs

Abstract

Provided is a precast constructional double-dovetailed steel-concrete combined beam in adoption of stud connection. The combined beam comprises precast concrete plates, wherein the precast concrete plates and a steel beam are in assembly connection through embedded shearing-resistant studs; the section, under flanges, of the steel beam is tightly connected with the steel beam through bolts; the precast concrete plates positioned at the left and right side are connected by inserting double-dovetailed plug connectors into prepared holes of wedged steel components; prepared holes of a precast thin-wall steel plate stay in accordance with the ones of the steel beam; the shearing-resistant studs penetrate through the prepared holes of the precast thin-wall steel plate in a mode of spot welding to further reinforce the connection between the shearing-resistant studs and the prepared holes of the precast thin-wall steel plate, and constitute a connector. All components of the precast constructional double-dovetailed steel-concrete combined beam adopt on-site assembly connection to reduce welding and template engineering, thereby shortening working periods, increasing efficiency of modern constructional industrialization assembly, achieving procedures of detachable installation of fabricated beams and slabs, and embodying novel construction ideas of energy-saving environmental-friendly construction nowadays.

Description

technical field [0001] The invention belongs to the technical field of building structure engineering, in particular to a prefabricated double dovetail steel-concrete composite beam connected by studs. Background technique [0002] With the vigorous promotion and development of construction industrialization, the development of prefabricated buildings is becoming more and more important. At present, prefabricated concrete buildings have been adopted by some enterprises due to the advantages of fast construction speed and high quality level. However, due to factors such as high cost and difficult construction, the development of prefabricated concrete buildings has been hindered to a large extent. my country's steel output has ranked first in the world since 2014. In recent years, the development of steel structures has the characteristics of fast construction and easy disassembly. However, due to economic and technical reasons, most projects still use cast-in-place or The st...

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Problems solved by technology

[0005] In most traditional multi-story residential buildings, cast-in-place reinforced concrete structures are usually used. However, in order to avoid stress concentration at the joints of steel bars and cause concrete damage, more complex structural measures need to be added around it to ensure reasonable stress. It leads to large amount of materials, complex structure, difficult design, difficult construction and bulky structure, which affects the beauty and use of the building

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