Assembled steel pipe concrete laminated column-beam structure system with multiple built-in steel pipes

Abstract

The invention discloses an assembled steel pipe concrete laminated column-beam structure system with multiple built-in steel pipes. The structure system comprises a prefabricated inner steel pipe which comprises a central large-diameter steel pipe and periphery small-diameter inner steel pipes which are connected through low-yield point steel, and the multiple prefabricated built-in steel pipes are provided with a slurry flowing hole, and the multiple prefabricated built-in steel pipes are connected through single-side bolts by using inner pipe sleeves at the height of 1 / 2-2 / 3 of the column height. An outer steel pipe is connected with an outer pipe connecting pipe through a flange plate at the beam column node by using high strength bolts, while the outer pipe connecting pipe is connectedwith the outer steel pipe, the outer pipe connecting pipe is prefabricated with the height of the beam according to the size of the beam, and is provided with an overhanging beam end so as to be conveniently connected with the beam through a web connecting plate and a flange connecting plate. According to the invention, the multiple prefabricated built-in steel pipes are arranged in the outer steel pipe, so that the bearing capacity of the structure is increased, and the energy consumption performance is improved through the low yield point steel connecting element and the slurry flowing hole, the connection of the multiple prefabricated built-in steel pipes, the connection of the outer steel pipe and the connection of the beam column are carried out through assembled bolts, so that the construction efficiency is improved and the construction period is shortened.

Description

Technical field [0001] The invention relates to a fabricated steel tube concrete laminated column-beam structure system with built-in multiple steel tubes, belonging to the fabricated technical field of civil engineering. Background technique [0002] Modern construction projects have higher and higher requirements for building materials and building structures. Conventional structural forms can no longer meet the requirements of structural design. More and more combined structural forms are applied to actual projects, which inherit steel structures and reinforced concrete structures. The advantages of each, also overcome the shortcomings of the two to produce a new type of system structure, can make full use of the characteristics of steel and concrete, according to the best geometric size, to form the best composite components. It has the advantages of light weight, good ductility, reduced cross-sectional area, and shortened construction period. In the composite structure, con...

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Problems solved by technology

[0005] It can be seen that the assembly of CFST system still lacks new forms. In order to determine the form of column-column connection and column-beam connection, and to investigate the safety, reliability and feasibility of large-diameter CFST columns, a new method was invented. It is easy to assemble and connect, save materials, so as to achieve the best prefabricated structure. The prefabricated concrete-filled steel tube column connection node system with multiple round steel pipes is an improvement for the current prefabricated steel tube concrete system in the industry.

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