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Prefabricated double-energy-dissipative repositionable circular steel pipe concrete composite column and its installation method

A round steel tube and prefabricated technology, which is applied to columns, piers, pillars, etc., can solve the problems of small construction space of composite columns and insufficient integrity of composite steel tube concrete columns, so as to simplify the construction process and ensure the connection performance and integrity. , to ensure the overall effect

Active Publication Date: 2020-02-11
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a prefabricated double-energy-consuming and resettable circular concrete-filled steel tube composite column and its installation method, which are used to solve the problem of insufficient integrity of the steel-filled steel tube concrete composite column and the construction space of the composite column during relatively large earthquakes in the prior art. Small, to achieve double energy consumption and improve post-earthquake recovery ability

Method used

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  • Prefabricated double-energy-dissipative repositionable circular steel pipe concrete composite column and its installation method
  • Prefabricated double-energy-dissipative repositionable circular steel pipe concrete composite column and its installation method
  • Prefabricated double-energy-dissipative repositionable circular steel pipe concrete composite column and its installation method

Examples

Experimental program
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Embodiment 1

[0050] Such asfigure 1 , 2 As shown in and 3, a prefabricated double-energy-dissipating circular concrete-filled steel tubular composite column of the present invention includes an independent foundation 1, a class I column 2 (fabricated constrained concrete-filled steel tubular column), and a class II column 3 (fabricated resettable Circular concrete-filled steel tube columns) and energy-dissipating hinged steel plates 4, fixedly installed on the independent foundation 1 at the bottom are Type I columns 2, Type II columns 3 and energy-dissipating hinged steel plates 4. Type I columns are spliced ​​by 2 circular stiffened steel pipes 8 and restraint supports 6. The two ends of the circular stiffened steel pipes 8 and the restraint supports 6 are provided with corresponding restraint plates 10 and eight bolt holes are reserved. The circular stiffened steel pipes 8 and the constraint support 6 are fixed by high-strength bolts; the circular stiffened steel pipe 8 is provided with...

Embodiment 2

[0063] In the above-mentioned embodiment 1, one type I column 2 and four type II columns 3 are combined by using energy-dissipating hinged steel plates 4 . It should be noted in this embodiment 2 that the combination of the type I column 2 and the type II column 3 is various, and is not limited to the combination mentioned in this embodiment.

[0064] Such as Figure 13 and 14 As shown, one type I column 2 and three type II columns 3 are combined with energy-dissipating hinged steel plates 4 to form a side column composite column structure.

[0065] Such as Figure 15 and 16 As shown, one type I column 2 and two type II columns 3 are combined with energy-dissipating hinged steel plates 4 to form a corner column composite column structure.

Embodiment 3

[0067] The installation method of the prefabricated double energy-consuming and resettable circular steel pipe concrete composite column of the present invention comprises the following steps:

[0068] The first step: connect the circular stiffened steel pipe 8 and the constraint support 6 through high-strength bolts;

[0069] The second step: fix the splicing support 5 and the lower steel bar through fasteners;

[0070] Step 3: connect the upper round steel pipe 18 with the upper sleeve connector 14, and connect the lower round steel pipe 20 with the lower sleeve connector 15;

[0071] Step 4: The prestressed steel bar 21 passes through the steel bar fixing plate at the upper end of the upper round steel pipe 18, the round steel pipe 13 column and the steel bar fixing plate at the lower end of the lower round steel pipe 20 in sequence;

[0072] Step 5: The energy-dissipating hinged steel plate 4 is connected to the type II column 3 through the hinge shaft 22 outside the plan...

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Abstract

The invention relates to a fabricated double energy-consumption repositionable concrete-filled circular steel tube combination column and an installation method thereof, and belongs to the technical field of structural engineering. The fabricated double energy-consumption repositionable concrete-filled circular steel tube combination column solves the problems that in prior art, when larger earthquake happens, the concrete-filled circular steel tube combination column is insufficient in integrality, the construction space of the combination column is small, double energy-consumption needs to be realized, and the recovery capability after the earthquake needs to be improved. The fabricated double energy-consumption repositionable concrete-filled circular steel tube combination column includes a type-I column, type-II columns, and energy-consumption hinged steel plates. Circular stiffened steel pipes and restraint supports are spliced to form the type-I column, the two ends of each circular stiffened steel pipe and the two ends of each restraint support are provided with corresponding restraint plates and eight bolt holes are reserved in each restraint plate, and the circular stiffened steel pipes and the restraint supports are fixed by high-strength bolts. All components of the fabricated double energy-consumption repositionable concrete-filled circular steel tube combination column can be machined in a factory and are connected by the high-strength bolts on site, complete assembly construction is achieved, the quality problem of on-site welding is avoided, the constructionprogress is accelerated, labor productivity is improved, and any destroyed component can be accurately disassembled and quickly replaced after an earthquake.

Description

technical field [0001] The invention relates to an assembled double-energy-consuming and resettable circular steel pipe concrete composite column and an installation method thereof, belonging to the technical field of structural engineering. Background technique [0002] With the development of technology, the height and span of building structures continue to increase. In tall and long-span buildings, the columns bear high axial force. The key to the work, which requires the column not only to have sufficient strength but also to have good ductility. When a large load is encountered, the bearing capacity of a column is far below the force requirements, and when the cross-section of the column is large, the building space will be wasted, while the steel tube concrete composite column has a higher bearing capacity and good Ductility, due to the continuous restraint of steel pipes on concrete, significantly improves the poor ductility of concrete, especially high-strength con...

Claims

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Application Information

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IPC IPC(8): E04C3/36E04G21/14E04B1/98E04H9/02
CPCE04C3/36E04G21/14E04H9/021
Inventor 牟犇王君昌崔瑶王清华管晓明张伟星
Owner QINGDAO TECHNOLOGICAL UNIVERSITY