CN114541794A - Steel pipe confined reinforced concrete column reinforcing structure and reinforcing method - Google Patents
Steel pipe confined reinforced concrete column reinforcing structure and reinforcing method Download PDFInfo
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- CN114541794A CN114541794A CN202110982682.0A CN202110982682A CN114541794A CN 114541794 A CN114541794 A CN 114541794A CN 202110982682 A CN202110982682 A CN 202110982682A CN 114541794 A CN114541794 A CN 114541794A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 112
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000004567 concrete Substances 0.000 claims description 27
- 239000011440 grout Substances 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides a steel tube confined reinforced concrete column reinforcing structure and a reinforcing method, and belongs to the technical field of building structures. The reinforced concrete column comprises a reinforced concrete column and a horizontal reinforced concrete beam, wherein the horizontal reinforced concrete beam is arranged at one end of the reinforced concrete column in the radial direction, the outer side surface of the reinforced concrete column is coated with a constraint steel pipe, a grouting material layer is filled between the reinforced concrete column and the constraint steel pipe, end plates are arranged on the top end surface and the bottom end surface of the beam at the joint of the horizontal reinforced concrete beam and the reinforced concrete column, and four corners between two adjacent end plates are connected by adopting counter-pulling screws.
Description
Technical Field
The invention relates to a steel tube confined reinforced concrete column reinforcing structure and a reinforcing method, and belongs to the technical field of building structures.
Background
The existing reinforced concrete column reinforcing method mainly comprises a section increasing method, wire winding reinforcement and fiber compound nuclear material pasting reinforcement.
The cross section enlarging method increases the cross section area of the original concrete column and adds longitudinal stressed steel bars and stirrups to improve the bearing capacity and rigidity of the concrete column. The concrete method for reinforcing the concrete column by the cross section enlarging method comprises the following steps: chiseling off the building surface layer and the protective layer of the original concrete column, additionally arranging longitudinal stress steel bars and circumferential stirrups on the periphery of the original concrete column, and pouring concrete to form the reinforced concrete column taking the original concrete column as a core column. In order to improve the bonding integrity between new and old concrete, a certain number of structural joint bars can be added along the radial direction of the column section, and the joint bar method can adopt a bar planting method.
The main disadvantages of the method for reinforcing the concrete column by increasing the section are as follows: 1. occupies the indoor effective use space; 2. the integral rigidity and the integral dynamic characteristic of the structure are changed; 3. the construction period of wet operation is long.
The wire winding reinforcement is to wind the steel wire on the circumference of the column continuously perpendicular to the axis of the column, and the fiber pasting rechecking material is wound on the circumference of the column at intervals or continuously in the form of annular hoop perpendicular to the axis of the column.
The defects of wire winding reinforcement are as follows: 1. the method can only improve the constrained degree of the concrete of the circular concrete column, improve the compressive strength and the structural ductility of the concrete material or reinforce the oblique section of the concrete material without remarkable effect of improving the normal section bearing capacity of the circular concrete column; 2. the fiber pasting and rechecking material needs to be reinforced, and the outer surface of the fiber pasting and rechecking material needs to be provided with fireproof paint or fireproof mortar.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a steel tube-confined reinforced concrete column reinforced structure, which is used to solve the problems of large occupied space, low bearing capacity of a normal section and an oblique section, long construction period, and high construction cost of the existing reinforced concrete column reinforced structure in the prior art.
To achieve the above and other related objects, the present invention provides a steel pipe-reinforced concrete column reinforcing structure, comprising: the reinforced concrete column comprises a reinforced concrete column and a horizontal reinforced concrete beam, wherein the horizontal reinforced concrete beam is arranged at one end of the reinforced concrete column along the radial direction.
In an embodiment of the invention, the reinforced concrete column has a circular or rectangular cross section.
In an embodiment of the invention, the constraint steel pipe is made by welding two semicircular or arc-shaped steel plates.
In an embodiment of the invention, the end plate is connected with the horizontal reinforced concrete beam through an anchor bolt.
In an embodiment of the present invention, the grouting material layer is made of micro-expansion high-strength grouting material or micro-expansion fine aggregate concrete.
A steel tube confined reinforced concrete column reinforcing method comprises the following steps:
s1, sleeving a restraining steel pipe on the outer side surface of the reinforced concrete column;
s2, arranging a grouting pipe at the bottom of the restraint steel pipe, arranging a grout outlet pipe at the top of the restraint steel pipe, and pouring micro-expansion high-strength grouting material or micro-expansion fine aggregate concrete between the restraint steel pipe and the reinforced concrete by adopting a jacking method;
s3, arranging end plates on two end faces of the top and bottom of the beam at the joint of the horizontal reinforced concrete beam and the reinforced concrete column;
s4, connecting four corners between two end plates by adopting counter-pulling screws, and connecting the end plates with the horizontal reinforced concrete beam by adopting anchor bolts;
s5, arranging an additional stirrup which penetrates through the concrete beam in the horizontal reinforced concrete beam between the two end plates;
s6, filling reinforced concrete in the area where the opposite-pulling screw rod is arranged between the two end plates to form the column end rectangular expansion head.
As mentioned above, the steel tube confined reinforced concrete column reinforcing structure provided by the invention has the following beneficial effects:
according to the invention, the circular or square reinforced concrete column is reinforced and reinforced by adopting the restraint steel pipe, the end plate, the anchor bolt, the counter-pull screw rod, the column end rectangular expansion head and the like, compared with the existing reinforcement technology, the cross section is not increased, the occupied space is reduced, the structural strength is high, the construction operation is simple and convenient, and the construction period is short.
Drawings
Fig. 1 is a schematic front view of a steel pipe-confined reinforced concrete column reinforcement structure according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1-1 of a steel pipe-reinforced concrete column reinforcement structure according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of fig. 1 taken along line 2-2, showing a reinforced structure of a steel pipe-reinforced concrete column according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of fig. 1 showing a reinforced structure of a steel pipe-reinforced concrete column according to an embodiment of the present invention.
Fig. 5 is a schematic front view of a steel pipe-confined reinforced concrete column reinforcement structure according to a second embodiment of the present invention.
Fig. 6 is a schematic sectional view of fig. 5 showing a structure of the steel pipe-reinforced concrete column reinforcement structure according to a second embodiment of the present invention, taken along line 1-1.
Fig. 7 is a schematic cross-sectional view of fig. 5 taken along line 2-2, showing a reinforced structure of a steel pipe-reinforced concrete column according to a second embodiment of the present invention.
Fig. 8 is a schematic cross-sectional view of fig. 5 taken along line 3-3, showing a reinforced structure of a steel pipe-reinforced concrete column according to a second embodiment of the present invention.
Wherein, 1, a reinforced concrete column; 2. a horizontal reinforced concrete beam; 3. restraining the steel pipe; 4. grouting a slurry layer; 5. a grouting pipe; 6. a pulp outlet pipe; 7. an end plate; 8. oppositely pulling the screw rod; 9. an anchor bolt; 10. a rectangular expanding head; 11. and (5) attaching a stirrup.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The first embodiment is as follows:
referring to fig. 1 to 4, the present invention provides a steel pipe-reinforced concrete column reinforcement structure, including: a circular reinforced concrete column 1 and a horizontal reinforced concrete beam 2, the horizontal reinforced concrete beam 2 is arranged at one end of the circular reinforced concrete column 1 along the radial direction, the outer side surface of the circular reinforced concrete column 1 is coated with a restraint steel tube 3, the restraint steel tube 3 is welded by two semi-circular or arc steel plates, a grouting material layer 4 is filled between the circular reinforced concrete column 1 and the restraint steel tube 3, the grouting material layer 4 adopts micro-expansion high-strength grouting material or micro-expansion fine stone concrete, end plates 7 are arranged at the two end surfaces of the beam top and the beam bottom at the joint of the horizontal reinforced concrete beam 2 and the circular reinforced concrete column 1, four corners between two adjacent end plates 7 are connected by counter-pulling screw rods 8, the end plates 7 are connected with the horizontal reinforced concrete beam 2 by anchor bolts 9, and the area of the counter-pulling screw rods 8 between the two end plates 7 is filled with reinforced concrete to form a column end rectangular expansion head 10, an additional stirrup 11 which traverses the horizontal reinforced concrete beam 2 is arranged in the column-end rectangular expansion head 10.
A method for reinforcing a steel pipe confined reinforced concrete column comprises the following steps: sleeving a restraining steel pipe on the surface of the outer side of the circular reinforced concrete column; the bottom of the restraint steel pipe is provided with a grouting pipe, the top of the restraint steel pipe is provided with a grout outlet pipe, and micro-expansion high-strength grouting material or micro-expansion fine stone concrete is poured between the restraint steel pipe and the circular reinforced concrete by adopting a jacking method; end plates are arranged on two end faces of the top and the bottom of the beam at the joint of the horizontal reinforced concrete beam and the circular reinforced concrete column; connecting four corners between the two end plates by adopting counter-pulling screws, and connecting the end plates with the horizontal reinforced concrete beam by adopting anchor bolts; an additional stirrup which penetrates through the concrete beam is arranged in the horizontal reinforced concrete beam between the two end plates; and a region of the oppositely-pulling screw rod between the two end plates is filled with reinforced concrete to form a column end rectangular expansion head.
Example two:
referring to fig. 5 to 8, the present invention provides a steel pipe-reinforced concrete column reinforcement structure, including: a square reinforced concrete column 1 and a horizontal reinforced concrete beam 2, the horizontal reinforced concrete beam 2 is arranged at one end of the square reinforced concrete column 1 along the radial direction, the outer surface of the square reinforced concrete column 1 is coated with a restraint steel pipe 3, the restraint steel pipe 3 is welded by two semicircular or arc-shaped steel plates, a grouting material layer 4 is filled between the square reinforced concrete column 1 and the restraint steel pipe 3, the grouting material layer 4 adopts micro-expansion high-strength grouting material or micro-expansion fine stone concrete, end plates 7 are arranged at the two end surfaces of the beam top and the beam bottom at the joint of the horizontal reinforced concrete beam 2 and the square reinforced concrete column 1, four corners between two adjacent end plates 7 are connected by counter-pulling screw rods 8, the end plates 7 are connected with the horizontal reinforced concrete beam 2 by anchor bolts 9, and a rectangular column end expanded head 10 is formed by filling reinforced concrete in the region of the counter-pulling screw rods 8 between the two end plates 7, an additional stirrup 11 which traverses the horizontal reinforced concrete beam 2 is arranged in the column-end rectangular expansion head 10.
A method for reinforcing a steel pipe confined reinforced concrete column comprises the following steps: a constraint steel pipe is sleeved on the outer side surface of the square reinforced concrete column; the bottom of the restraint steel pipe is provided with a grouting pipe, the top of the restraint steel pipe is provided with a grout outlet pipe, and micro-expansion high-strength grouting material or micro-expansion fine stone concrete is poured between the restraint steel pipe and the square reinforced concrete by adopting a jacking method; end plates are arranged on two end faces of the beam top and the beam bottom at the joint of the horizontal reinforced concrete beam and the square reinforced concrete column; connecting four corners between the two end plates by adopting counter-pulling screws, and connecting the end plates with the horizontal reinforced concrete beam by adopting anchor bolts; an additional stirrup which transversely penetrates through the concrete beam is arranged in the horizontal reinforced concrete beam between the two end plates; and a region of the oppositely-pulling screw rod between the two end plates is filled with reinforced concrete to form a column end rectangular expansion head.
In conclusion, the circular or square reinforced concrete column is reinforced and reinforced by adopting the constraint steel pipe, the end plate, the anchor bolt, the counter-pull screw rod, the column end rectangular expansion head and the like, and compared with the existing reinforcement technology, the reinforcement technology has the advantages that the increase of the section is avoided, the occupied space is reduced, the structural strength is high, the construction operation is simple and convenient, and the construction period is short. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A steel pipe confined reinforced concrete column reinforced structure comprising: the reinforced concrete column comprises a reinforced concrete column (1) and a horizontal reinforced concrete beam (2), wherein the horizontal reinforced concrete beam (2) is arranged at one end of the reinforced concrete column (1) along the radial direction, and is characterized in that a restraint steel pipe (3) is wrapped on the surface of the outer side of the reinforced concrete column (1), a grouting material layer (4) is filled between the reinforced concrete column (1) and the restraint steel pipe (3), end plates (7) are arranged on the beam top and the beam bottom two end faces of the joint of the horizontal reinforced concrete column (1) and the horizontal reinforced concrete column (2), four corners between two adjacent end plates (7) are connected through split screws (8), a column end rectangular expansion head (10) is formed by filling reinforced concrete in a split screw (8) setting area, and an additional stirrup (11) which penetrates through the horizontal reinforced concrete beam (2) is arranged in the column end rectangular expansion head (10).
2. A steel tube confined reinforced concrete column reinforced structure according to claim 1, characterized in that: the section of the reinforced concrete column (1) is circular or rectangular.
3. A steel tube confined reinforced concrete column reinforced structure according to claim 1, characterized in that: the restraint steel pipe (3) is made by welding two semicircular or arc-shaped steel plates.
4. A steel tube confined reinforced concrete column reinforced structure according to claim 1, characterized in that: the end plate (7) is connected with the horizontal reinforced concrete beam (2) through an anchor bolt (9).
5. A steel tube confined reinforced concrete column reinforced structure according to claim 1, characterized in that: the grouting material layer (4) is made of micro-expansion high-strength grouting material or micro-expansion fine aggregate concrete.
6. A steel tube confined reinforced concrete column reinforcing method comprises the following steps:
s1, sleeving a restraining steel pipe on the outer side surface of the reinforced concrete column;
s2, arranging a grouting pipe at the bottom of the restraint steel pipe, arranging a grout outlet pipe at the top of the restraint steel pipe, and pouring micro-expansion high-strength grouting material or micro-expansion fine aggregate concrete between the restraint steel pipe and the reinforced concrete by adopting a jacking method;
s3, arranging end plates on two end faces of the top and bottom of the beam at the joint of the horizontal reinforced concrete beam and the reinforced concrete column;
s4, connecting four corners between two end plates by adopting counter-pulling screws, and connecting the end plates with the horizontal reinforced concrete beam by adopting anchor bolts;
s5, arranging an additional stirrup which penetrates through the concrete beam in the horizontal reinforced concrete beam between the two end plates;
s6, filling reinforced concrete in the region where the opposite-pulling screw rod is arranged between the two end plates to form the column end rectangular expansion head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982682.0A CN114541794A (en) | 2021-08-25 | 2021-08-25 | Steel pipe confined reinforced concrete column reinforcing structure and reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982682.0A CN114541794A (en) | 2021-08-25 | 2021-08-25 | Steel pipe confined reinforced concrete column reinforcing structure and reinforcing method |
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| Publication Number | Publication Date |
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| CN114541794A true CN114541794A (en) | 2022-05-27 |
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| CN202110982682.0A Withdrawn CN114541794A (en) | 2021-08-25 | 2021-08-25 | Steel pipe confined reinforced concrete column reinforcing structure and reinforcing method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265005A (en) * | 2014-10-22 | 2015-01-07 | 天颂建设集团有限公司 | Steel plate and steel bar combined beam top reinforced structure |
| CN106978909A (en) * | 2017-05-17 | 2017-07-25 | 李碧卿 | A kind of method that beams of concrete is connected with profile steel concrete column joint reinforcing bar |
| CN109488039A (en) * | 2019-01-04 | 2019-03-19 | 烟台大学 | Adjustable diameter and screw adjusting jack reinforced column substitution reinforcement structure and its reinforcement means built in a kind of |
| JP2019143422A (en) * | 2018-02-23 | 2019-08-29 | 株式会社フジタ | Reinforcement structure of column-beam connection portion |
| CN110219474A (en) * | 2019-05-28 | 2019-09-10 | 湖南大学 | A kind of structural column increasing section reinforcement means using steel tube confinement |
| CN210797873U (en) * | 2019-08-15 | 2020-06-19 | 廖永红 | Assembled reinforced concrete column connecting system |
-
2021
- 2021-08-25 CN CN202110982682.0A patent/CN114541794A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265005A (en) * | 2014-10-22 | 2015-01-07 | 天颂建设集团有限公司 | Steel plate and steel bar combined beam top reinforced structure |
| CN106978909A (en) * | 2017-05-17 | 2017-07-25 | 李碧卿 | A kind of method that beams of concrete is connected with profile steel concrete column joint reinforcing bar |
| JP2019143422A (en) * | 2018-02-23 | 2019-08-29 | 株式会社フジタ | Reinforcement structure of column-beam connection portion |
| CN109488039A (en) * | 2019-01-04 | 2019-03-19 | 烟台大学 | Adjustable diameter and screw adjusting jack reinforced column substitution reinforcement structure and its reinforcement means built in a kind of |
| CN110219474A (en) * | 2019-05-28 | 2019-09-10 | 湖南大学 | A kind of structural column increasing section reinforcement means using steel tube confinement |
| CN210797873U (en) * | 2019-08-15 | 2020-06-19 | 廖永红 | Assembled reinforced concrete column connecting system |
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Application publication date: 20220527 |
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