CN113431262A - Super-high performance concrete column with T-shaped cross section stiffening rib square sleeve round steel pipe - Google Patents
Super-high performance concrete column with T-shaped cross section stiffening rib square sleeve round steel pipe Download PDFInfo
- Publication number
- CN113431262A CN113431262A CN202110904618.0A CN202110904618A CN113431262A CN 113431262 A CN113431262 A CN 113431262A CN 202110904618 A CN202110904618 A CN 202110904618A CN 113431262 A CN113431262 A CN 113431262A
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- Prior art keywords
- steel pipe
- high performance
- stiffening rib
- performance concrete
- ultra
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 239000004574 high-performance concrete Substances 0.000 title claims description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 30
- 239000011229 interlayer Substances 0.000 claims abstract description 3
- 239000004568 cement Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 21
- 238000010276 construction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 239000011372 high-strength concrete Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses an ultra-high performance concrete column with a T-shaped section stiffening rib square sleeve round steel pipe, which is characterized by comprising the following components in percentage by weight: 1. inner steel pipe 2, outer steel pipe 3, T type stiffening rib 4, ultra high performance concrete. The inner steel pipe and the outer steel pipe are square and round thin-walled steel pipes which are concentrically arranged, the interlayer is added with ultra-high performance concrete, and T-shaped ribs are welded on the inner steel pipe to enable the inner steel pipe and the outer steel pipe to be arranged in the concrete. Although the high-strength concrete has high strength, the brittleness is higher, and the T-shaped ribs are arranged to assist the square outer steel pipe to better provide a constraint effect for the concrete. The component improves the bending resistance bearing capacity of the steel pipe concrete column under the bias pressure condition, increases the ductility of the component, has the advantages of reasonable stress, clear force transfer, high construction speed and the like, and is more suitable for being used in actual engineering.
Description
Technical Field
The invention relates to a concrete column, in particular to a steel pipe concrete rib with a stiffening rib with a T-shaped section.
Background
The concrete filled steel tube column is a structural member which is filled with concrete in an inner cavity of a steel tube and bears the external load together with the core concrete of the steel tube, the compressive capacity of the concrete is strong, and the sandwich concrete is in a three-dimensional compression state under the constraint of the steel tube so as to further improve the compressive effect of the sandwich concrete. The axle center compression resistant effect of the integral component can be greatly improved by adding the ultra-high performance concrete into the steel tube concrete column, and the integral component can be easily subjected to brittle failure or low ductility due to the fact that the brittleness of the ultra-high performance concrete is large, and the constraint effect of the thin-wall steel tube or the square-section outer steel tube on the ultra-high performance concrete is insufficient. In order to solve the problem, a T-shaped section stiffening rib is added on the outer wall of the inner pipe to assist the outer steel pipe to provide a constraint effect on the ultra-high performance concrete, so that the ductility of the column is improved, and the bending resistance is enhanced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a square sleeve round steel tube ultrahigh-performance concrete column with a T-shaped cross section stiffening rib in order to improve the bending resistance and the ductility of a steel tube concrete column with built-in ultrahigh-performance concrete.
The technical scheme of the invention is as follows: the utility model provides a take T shape cross-section stiffening rib square sleeve circular steel tube ultra high performance concrete column, includes the outer steel pipe of square, takes T shape cross-section stiffening rib circle inner tube, ultra high performance concrete, and the stiffening rib direction is on a parallel with inner tube length direction, and the inner tube is striden the centre and is the symmetric point, and upper and lower symmetric distribution is on the inner tube.
The cross section of the outer steel pipe of the square sleeve round hollow interlayer is square, and the cross section of the inner steel pipe is round.
The cross section of the stiffening rib is T-shaped, and the bottom of the web plate is welded on the stiffening rib along the length direction of the inner steel pipe.
The average strength of the ultra-high performance concrete is 100Mpa, and the mixing ratio is as follows: and (3) cementing materials: quartz sand =1:0.16: 1. The cement material comprises cement, rice hull ash and tile powder (the dosage is 15% and 20% of the cement material). The dosage of the water reducing agent is 1.5 percent of the gelled material, and P.O52.5 grade common silica gel cement is used as the cement.
The length of the web plate of the stiffening rib with the T-shaped section is equal to the radius of the inner pipe, and the width of the flange is equal to the radius of the 4/3 inner pipe.
The hollow rate of the section of the steel pipe is respectively 0.3, 0.4 and 0.5.
The longitudinal length of the stiffening rib is 1/2 of the length of the steel pipe, and the stiffening rib is welded on the middle point of the outer surface of the inner pipe and is extended at equal distance from top to bottom.
The invention has the advantages that the T-shaped section stiffening ribs are added on the inner steel pipe, and the constraint effect of the ultra-high performance concrete is further enhanced by matching with the steel pipe, because most bearing columns are in an eccentric compression state in the actual engineering, although the ultra-high performance concrete is used, the ultimate axial compression bearing capacity can be greatly improved, the defects of larger brittleness, shorter ductility, insufficient bending bearing capacity and the like can be realized, and the concrete engineering design requirements are difficult to meet without further improvement. The T-shaped section ribs are welded in four directions of the outer wall of the inner pipe respectively, so that concrete can be effectively restrained and the steel pipe can supplement each other, the bending resistance bearing capacity of the member is improved under the condition that the ultimate axial center compression resistance bearing capacity is not changed, the descending section of a load-displacement curve tends to be gentle, and the ductility of the member is improved. In the aspect of construction, the ribbed inner pipe and the outer steel pipe are prefabricated in advance, so that the construction mode is simple and convenient, the speed is high, the combination of the ultra-high performance concrete, the good flowability and the like is realized, the construction efficiency is greatly improved, and the construction requirement of the modern building is met.
Drawings
FIG. 1 is a cross-sectional schematic view of a square sleeve round steel pipe ultra-high performance concrete column with T-shaped cross-section stiffening ribs.
FIG. 2 is a cross-sectional view of a square sleeve round steel pipe ultra-high performance concrete column with T-shaped cross-section stiffening ribs.
Description of reference numerals: the concrete-reinforced composite pipe comprises an inner steel pipe 1, an outer steel pipe 2, ultrahigh-performance concrete 3 and a T-shaped section stiffening rib 4.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
A steel tube concrete column is shown in attached figures 1-2 and comprises an inner steel tube 1, the diameter and the length of the outer steel tube 2 are selected according to construction requirements, the inner steel tube 1 is arranged at the axis of the outer steel tube 2, a T-shaped section stiffening rib 4 is welded on the inner steel tube 1, and ultrahigh-performance concrete is filled in a space between the inner steel tube 1 and the outer steel tube 2.
During construction, the steel pipe structure is inserted into a pit at the construction position and fixed, and then concrete is poured into a gap between the outer steel pipe 2 and the inner steel pipe 1 from the port at the upper end.
Preferably, the hollow sandwich steel pipe concrete column has a hollow rate of 0.3-0.5.
Preferably, the longitudinal length of the T-shaped rib of the hollow sandwich steel tube concrete column with the T-shaped stiffening rib is 1/2 the height of the steel tube column.
Preferably, the height of the T-shaped rib web of the hollow sandwich steel tube concrete column with the T-shaped stiffening rib is equal to the radius length of the inner tube.
Preferably, the length of the wing edge of the T-shaped rib of the hollow sandwich steel tube concrete column with the T-shaped stiffening rib is 4/3 radius of the inner tube.
The T-shaped stiffening ribs are welded on the outer surface of the inner pipe, and the welding seams are full penetration groove welding, so that the phenomenon of premature cracking of the welding seams is avoided.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The utility model provides a take T shape cross-section rib square sleeve circular steel tube ultra high performance concrete which characterized in that: the concrete-reinforced composite pipe comprises a square-section outer steel pipe, a round-section inner steel pipe, ultrahigh-performance concrete and a T-shaped section stiffening rib.
2. The ultra-high performance concrete with the T-shaped section stiffening rib square sleeve round steel pipe as claimed in claim 1, wherein the square section outer steel pipe and the circular section inner steel pipe are concentrically arranged.
3. The ultra-high performance concrete with the T-shaped section stiffening rib square sleeve round steel pipe as claimed in claim 1, wherein the ultra-high performance concrete is poured in the steel pipe interlayer, and the average strength of the ultra-high performance concrete is 100 MPa.
4. The ultra-high performance concrete with the T-shaped section stiffening rib square sleeve round steel pipe as claimed in claim 1, wherein the bottom of the web plate is welded in the middle of the length direction of the inner steel pipe in the extension direction of the T-shaped section stiffening rib, and four surfaces of the inner steel pipe with the round section are respectively welded.
5. The ultra-high performance concrete with the T-shaped section and the stiffening rib square sleeve round steel pipe as claimed in claim 1, wherein the hollow rate of the section of the steel pipe is 0.3, 0.4 and 0.5 respectively.
6. The ultra-high performance concrete with the T-shaped section stiffening rib square sleeve round steel pipe as claimed in claim 3, wherein the mixing ratio of the high performance concrete is cementing material: quartz sand =1:0.16: 1.
7. The cement material comprises cement, rice hull ash and tile powder (the dosage is 15% and 20% of the cement material).
8. The dosage of the water reducing agent is 1.5 percent of the gelled material.
9. The ultra-high performance concrete with the T-section stiffening rib square sleeve round steel pipe as claimed in claim 4, wherein the length of the web of the T-section stiffening rib is equal to the radius of the inner pipe, and the width of the flange is equal to 4/3 radius of the inner pipe.
10. The ultra-high performance concrete with the stiffening rib square sleeve round steel pipe with the T-shaped section as claimed in claim 4, wherein the longitudinal length of the stiffening rib is 1/2 of the length of the steel pipe, and the stiffening rib is welded on the middle point of the outer surface of the inner pipe and is extended at equal distance from the middle point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110904618.0A CN113431262A (en) | 2021-08-07 | 2021-08-07 | Super-high performance concrete column with T-shaped cross section stiffening rib square sleeve round steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110904618.0A CN113431262A (en) | 2021-08-07 | 2021-08-07 | Super-high performance concrete column with T-shaped cross section stiffening rib square sleeve round steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113431262A true CN113431262A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110904618.0A Pending CN113431262A (en) | 2021-08-07 | 2021-08-07 | Super-high performance concrete column with T-shaped cross section stiffening rib square sleeve round steel pipe |
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| Country | Link |
|---|---|
| CN (1) | CN113431262A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100127902A (en) * | 2009-05-27 | 2010-12-07 | 주식회사 한구조엔지니어링 | Concrete filled tubular column |
| CN201785751U (en) * | 2010-07-15 | 2011-04-06 | 南京工业大学 | Double-tube reinforced composite material combined pile |
| CN203795721U (en) * | 2014-04-24 | 2014-08-27 | 安徽城建检测科技有限公司 | Concrete column with built-in square steel tube |
| KR101715143B1 (en) * | 2016-07-15 | 2017-03-13 | 한국건설기술연구원 | Concrete filled tube of non-welding using built-in straight type bolt connection slot and wave punching steel plate and construction method threrfor |
| CN207672865U (en) * | 2017-10-30 | 2018-07-31 | 华侨大学 | The concrete filled steel tube coupled column of segment work stone is filled out in a kind of |
| CN210002698U (en) * | 2019-04-18 | 2020-01-31 | 中国华西工程设计建设有限公司 | composite section steel pipe concrete composite column |
| CN213014999U (en) * | 2020-08-07 | 2021-04-20 | 西安建筑科技大学 | Hollow section steel concrete column |
-
2021
- 2021-08-07 CN CN202110904618.0A patent/CN113431262A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100127902A (en) * | 2009-05-27 | 2010-12-07 | 주식회사 한구조엔지니어링 | Concrete filled tubular column |
| CN201785751U (en) * | 2010-07-15 | 2011-04-06 | 南京工业大学 | Double-tube reinforced composite material combined pile |
| CN203795721U (en) * | 2014-04-24 | 2014-08-27 | 安徽城建检测科技有限公司 | Concrete column with built-in square steel tube |
| KR101715143B1 (en) * | 2016-07-15 | 2017-03-13 | 한국건설기술연구원 | Concrete filled tube of non-welding using built-in straight type bolt connection slot and wave punching steel plate and construction method threrfor |
| CN207672865U (en) * | 2017-10-30 | 2018-07-31 | 华侨大学 | The concrete filled steel tube coupled column of segment work stone is filled out in a kind of |
| CN210002698U (en) * | 2019-04-18 | 2020-01-31 | 中国华西工程设计建设有限公司 | composite section steel pipe concrete composite column |
| CN213014999U (en) * | 2020-08-07 | 2021-04-20 | 西安建筑科技大学 | Hollow section steel concrete column |
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Application publication date: 20210924 |
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