Prefabricated concrete-filled steel tube composite column and building thereof

A technology of steel pipe concrete and prefabrication, which is applied in the direction of construction, building components, building structures, etc., can solve the problems of difficult to guarantee the quality of concrete pouring, high labor intensity, and a lot of construction waste, and achieve good application prospects, wide application range, Good mechanical performance

Pending Publication Date: 2021-08-06
中铁房地产集团北方有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Concrete-filled steel tube composite columns have many advantages, but there are also disadvantages and deficiencies such as large workload and high labor intensity for on-site steel bar binding and formwork erection; wet concrete pouring operations, a lot of construction waste; diffic

Method used

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  • Prefabricated concrete-filled steel tube composite column and building thereof
  • Prefabricated concrete-filled steel tube composite column and building thereof
  • Prefabricated concrete-filled steel tube composite column and building thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] like figure 1 As shown, a prefabricated concrete-filled steel tube composite column 100 provided in this embodiment includes: a steel tube 110, a concrete column 120 filled in the tube, a concrete layer 130 outside the tube, and a steel skeleton; Concrete columns 120 are filled inside the pipe; the outer concrete layer 130 is wrapped on the outside of the steel pipe 110; the steel skeleton is buried in the outer concrete layer 130; the two ends of the steel pipe 110 are respectively provided with connecting structures for connecting with foundations, steel beams or columns .

[0068] The concrete column 120 filled in the pipe is formed by pouring self-compacting concrete; the concrete layer 130 outside the pipe is made of ordinary strength concrete, and the concrete grade is from C35 to C50. The steel pipe 110 is a circular steel pipe, a rectangular steel pipe or a polygonal steel pipe.

[0069] The reinforcement skeleton includes: column longitudinal bars 140 and sti...

Embodiment 2

[0091] This embodiment is basically the same as Embodiment 1, the difference is:

[0092] like Figure 9 As shown, the column longitudinal reinforcement 140 is an angle steel 141 inside the column. More preferably, the angle steel 141 in the column is an equilateral angle steel. To facilitate the vertical splicing of the upper and lower section superimposed columns 100. like Figure 10 As shown, the concrete layer 130 outside the pipe is provided with a post-cast section 131 at one or both ends of the steel pipe 110 in the column (that is, the laminated column 100); the angle steel 141 in the column is reserved with a connection hole on the exposed part of the post-cast section; When two adjacent stacked columns 100 are docked, the steel pipe 110 is fixedly connected through the connecting flange 112; after the upper and lower column inner angle steels 141 are butted, the upper and lower butted column inner angle steels 141 are fixedly connected by using the connecting angl...

Embodiment 3

[0095] This embodiment discloses a building using the above-mentioned prefabricated steel pipe concrete composite column, refer to Figure 7 and 11 As shown, it includes a steel beam 20 and a floor 10 ; both ends of the steel beam 20 are connected to the steel pipe 110 through the outstretched corbels 160 , and the steel beam 20 is hidden within the height range of the floor 10 .

[0096] The floor 10 includes a concrete precast slab 11 and an existing structural layer; the steel beam 20 includes an upper flange 22, a lower flange 21, and a web 23; Connected to the lower flange 21; the existing structural layer is laid above the concrete prefabricated slab 11, and the upper flange 22 is embedded in the existing structural layer. The web 23 is provided with reinforcement holes 23a and pipeline holes 23b at intervals, which are respectively used for piercing the perforated steel bars and the pipelines of the floor heating layer 14, and makes the concrete on both sides of the we...

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Abstract

The invention provides a prefabricated concrete-filled steel tube composite column and a building thereof. The composite column comprises a steel tube, a tube filled concrete column, a tube outside concrete layer and a steel reinforcement framework, wherein the tube filled concrete column which is formed by filling and pouring during prefabrication is arranged in the steel tube; the tube outside concrete layer wraps the steel tube; the steel reinforcement framework is embedded in the tube outside concrete layer; and connecting structures are respectively arranged on both ends of the steel tube. The prefabricated concrete-filled steel tube composite column has the advantages of good stress performance, good quality of factory prefabricated parts, high construction efficiency, simplicity and convenience in connection, good corrosion resistance and fireproof performance, high durability, wide application range, good economy and the like and has good application prospects in steel structure engineering.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a prefabricated assembled steel tube concrete composite column and its construction. Background technique [0002] Concrete-filled steel tube composite column is a composite member in which concrete-filled steel tube is set in the middle of the cross-section of the reinforced concrete column. It has formed a structural system developed independently in my country. Compared with reinforced concrete and steel-reinforced concrete (also known as steel concrete) columns, it has better compressive and seismic performance. Concrete-filled steel tube composite columns have the following features: high-strength concrete is poured inside the steel tube, and the confinement of the steel tube greatly increases the compressive strength of the concrete inside the steel tube without brittle failure; the concrete-filled steel tube is located in the middle of the section, which can fully exe...

Claims

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Application Information

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IPC IPC(8): E04C3/34E04B1/00E04B5/17E04C3/04E04B1/90F24D13/02
CPCE04B1/00E04B1/90E04B5/17E04C3/04E04C3/34F24D13/024
Inventor 王晓飞於立雄赵灿代春利王旭刘厂宋大祝周同朱书梅郭忠凯王蔚李晓龙姜宇成江岳珺孙艺芳尹智鑫徐博
Owner 中铁房地产集团北方有限公司
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