CN114809693A - High-load self-restraint reinforcing device for existing reinforced concrete column - Google Patents
High-load self-restraint reinforcing device for existing reinforced concrete column Download PDFInfo
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- CN114809693A CN114809693A CN202210278369.3A CN202210278369A CN114809693A CN 114809693 A CN114809693 A CN 114809693A CN 202210278369 A CN202210278369 A CN 202210278369A CN 114809693 A CN114809693 A CN 114809693A
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- concrete
- shell layer
- pull rod
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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
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a high-load self-restraint reinforcing device of an existing reinforced concrete column, which comprises the following components: a shell layer disposed around the concrete column; the supporting structure is arranged between the shell layer and the concrete column; wherein, the supporting structure is provided with an arc-shaped pull rod; the arc-shaped pull rods are arranged along the outer circumference of the concrete column, and two ends of each arc-shaped pull rod penetrate through the outer shell layer respectively and are connected with the fixing structures; the fixed structure is abutted against the outer wall of the outer shell layer; a poured concrete layer is arranged between the outer shell layer and the concrete column. According to the invention, the arc-shaped pull rod is arranged and concrete is poured to form the concrete layer, so that the combination length of the supporting structure and the concrete is increased, the strength of the concrete layer is increased, the outer shell layer of the outer package is matched to wrap the concrete column in the middle part, the strength of the whole concrete bearing column is increased, the thickness is not required to be deepened, the construction is simple, and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a high-load self-restraint reinforcing device for an existing reinforced concrete column.
Background
With the rapid development of society, more and more building structures reach the design service life, or the building structures in some important sections need to be modified due to the demand of society, so that the load is increased; the bearing columns of such buildings need to be reinforced to meet the actual use requirements.
At present reinforced concrete column's reinforcement transformation mode mainly contains increase cross-section method, outsourcing shaped steel, glue technique such as carbon fiber weaving, to the great building structure of load change after reforming transform among these prior art, its increased cross sectional area is great, the thickness of pasting the outsourcing steel or the number of piles of carbon fiber cloth are thicker, the on-the-spot a large amount of wet work of needs simultaneously and processes such as pasting structural adhesive, the construction cost is high, construction cycle is longer, the efficiency of construction is low, how under the condition of guaranteeing the efficiency of construction, satisfy the reinforcement requirement, increase the efficiency of construction, reduce cost.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-load self-restraint reinforcing device of the existing reinforced concrete column, so that the construction efficiency is improved, the construction cost is reduced, and the strength of the reinforced concrete column is improved.
The invention provides a high-load self-restraint reinforcing device of an existing reinforced concrete column, which comprises the following components:
a shell layer disposed around the concrete column;
the supporting structure is arranged between the shell layer and the concrete column;
wherein, the supporting structure is provided with an arc-shaped pull rod; the arc-shaped pull rods are arranged along the outer circumference of the concrete column, and two ends of each arc-shaped pull rod penetrate through the outer shell layer respectively and are connected with the fixing structures; the fixed structure is abutted against the outer wall of the outer shell layer; a poured concrete layer is arranged between the outer shell layer and the concrete column.
Compared with the prior art, the invention has the following beneficial effects:
according to the technology, the arc-shaped pull rod is arranged and concrete is poured on the arc-shaped pull rod to form the concrete layer, so that the combination length of the supporting structure and the concrete is increased, the strength of the concrete layer is increased, the outer shell layer which is externally coated is matched to wrap the concrete column in the middle, the strength of the whole concrete bearing column is increased, the thickness is not required to be deepened, the construction is simple, and the efficiency is high.
Preferably, a plurality of tensile blocks are arranged on the arc-shaped pull rod along the length direction.
Preferably, a plurality of pegs are also included that are attached to the inner wall of the outer shell layer.
Preferably, a plurality of arc-shaped pull rods are arranged; the arc-shaped pull rods are in sequential rotating and staggered arrangement from bottom to top by taking the concrete column as a center.
Preferably, the shell layer comprises two interconnected semi-circular shells.
Preferably, the support structure comprises:
the upper splicing ring can be split, and the lower end surface of the upper splicing ring is provided with a plurality of threaded holes;
the lower splicing ring can be split, and the upper end surface of the lower splicing ring is provided with a plurality of threaded holes;
the two ends of the support rods are respectively in threaded connection with corresponding threaded holes in the upper splicing circular ring and the lower splicing circular ring;
wherein, each support rod is connected with a plurality of support blocks along the length direction.
Preferably, the upper end face of the supporting block is provided with an open arc-shaped channel; the arc-shaped channel is used for supporting the arc-shaped pull rod.
Preferably, the fixing structure comprises:
the fixed block is provided with a abdicating hole, and one surface of the fixed block is attached to the outer wall of the shell layer;
the fixing nut is attached to one surface of the fixing block;
wherein, the tip of arc pull rod passes behind the hole of stepping down and is connected with fixation nut threaded connection.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a high-load self-restraining reinforcing device for an existing reinforced concrete column according to an embodiment of the present invention (in a top view, arc-shaped pull rods are arranged oppositely);
FIG. 2 is an AA-side cross-sectional view of the high load self-restraining reinforcement device of an existing reinforced concrete column of FIG. 1;
FIG. 3 is a top view of a high load self-restraining reinforcement of an existing steel concrete column of FIG. 1 (with studs);
fig. 4 is a schematic view of the connection of the semicircular shell of the high-load self-restraining reinforcing device of the existing reinforced concrete column in fig. 1.
Reference numerals:
1. an outer shell layer; 11. a stud; 12. a semicircular shell;
2. a support structure; 21. an arc-shaped pull rod; 22. a tensile block; 23. splicing the circular rings; 24. splicing the circular rings at the lower part; 25. a support bar; 26. a support block; 261. an arc-shaped channel;
3. a concrete column;
4. a concrete layer;
5. a fixed structure; 51. a fixed block; 52. and (5) fixing the nut.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 4, a high load self-restraint reinforcement device for existing reinforced concrete columns 3 comprises: a shell layer 1 arranged around the concrete column 3; the supporting structure 2 is arranged between the outer shell layer 1 and the concrete column 3; wherein, the supporting structure 2 is provided with an arc-shaped pull rod 21; the arc-shaped pull rods 21 are arranged along the periphery of the concrete column 3, and two ends of each arc-shaped pull rod penetrate through the outer shell layer 1 respectively and are connected with the fixing structures 5; the fixed structure 5 is abutted against the outer wall of the outer shell layer 1; a poured concrete layer 4 is arranged between the outer shell layer 1 and the concrete column 3.
The middle section of the arc-shaped pull rod 21 is arc-shaped, and the arc-shaped section of the tension rod is concentric with the cross section of the concrete column 3. The outer shell layer 1 is cylindrical when surrounding the concrete column 3, and is firstly subjected to scabbling treatment on the concrete column 3, wherein the scabbling depth is 10-30 mm; concrete is poured into the outer shell layer 1 to form a concrete layer 4, and the supporting structure 2 is wrapped inside the concrete layer 4; naturally, the arc-shaped pull rod 21 is wrapped, and the fixed structure 5 is connected with the two ends of the arc-shaped pull rod 21 to apply inward pulling force to the outer wall of the outer shell layer 1. The column 3 is loaded from above and has a tendency to expand outwards in its middle. The arcuate tension rods 21 apply a pulling force so that the casing layer 1 clamps the concrete layer 4 inwards against the expansion of the concrete column 3.
In addition, it should be noted that the internal supporting structure 2 of the reinforced concrete building is usually made of steel bars, the metal frame made of the steel bars is various cuboid frames, and the arc-shaped pull rod 21 is arranged through the arc-shaped section thereof, so that more steel bars are put into the concrete (in the concrete with the same unit length, the length of the bent steel bar is obviously longer than that of the straight steel bar), and the combination of the steel bars and more concrete can be realized by increasing the length of the steel bar in the unit concrete; thereby enhancing the strength of the concrete in the unit.
The concrete column 3 top atress and the middle part inflation, the strength to the arc pull rod 21 in the concrete layer 4 is equidirectional, stretch-draw the arc pull rod 21 promptly, and the segmental arc of arc pull rod 21 possesses more length that combines with the concrete than the linear type reinforcing bar, the atress inflation of concrete can be even distribute on each part concrete that combines with arc pull rod 21 promptly, what the inflation of concrete column 3 presented is that to begin from local inflation (stress concentration) destruction, and the setting of arc pull rod 21 can reduce stress concentration. The whole device increases the strength of the concrete layer 4, and has better protection effect on the concrete column 3.
Furthermore, a plurality of tensile blocks 22 are arranged on the arc-shaped pull rod 21 along the length direction.
When the arc-shaped pull rod 21 is wrapped by the poured concrete, the tensile blocks 22 arranged on the arc-shaped pull rod 21 are also wrapped in the concrete, and when the arc-shaped pull rod 21 has an expansion tendency due to the load borne by the concrete column 3, the structural degree of the arc-shaped pull rod 21 and the concrete layer 4 is enhanced by the presence of the tensile blocks 22, that is, the expansion force of the concrete can be completely borne by the arc-shaped pull rod 21 and is restrained by the arc-shaped pull rod 21. It can be known that the arc pull rod 21 that this device illustrates is the U type, actually also can be the C type, and the tip of the segmental arc of arc pull rod 21 can be located concrete column 3 diameter, then passes shell layer 1 and is connected with fixed knot constructs 5, can audio-visually understand like this, outwards promotes the both ends of arc pull rod 21 when concrete column 3 inflation, and the restriction of arc pull rod 21 length can't be elongated, so concrete column 3 is restricted.
Further, a plurality of pegs 11 are included that are attached to the inner wall of the outer shell 1.
The peg 11 is the T type, in order to confront the outside inflation of 3 and the local atress of concrete column 4, the peg 11 of T type is lived by 4 wraps up of concrete layer, local outer shell 1 is by the concrete inflation and when pushing up, can drive 1 rest of outer shell and move outward, and then stimulate the peg 11 in different places, so the setting of a plurality of pegs 11 can the effectual strength that the local inflation of dispersion concrete brought, gather whole outer shell 1 promptly and the inflation of part to confront, intensity has increased.
Furthermore, a plurality of arc-shaped pull rods 21 are arranged; the arc-shaped pull rods 21 are sequentially arranged in a rotating and staggered manner from bottom to top by taking the concrete column 3 as the center.
The plurality of arc-shaped pull rods 21 are arranged from bottom to top and are rotated by 30 degrees or 40 and 50 degrees respectively. The smaller the angle of rotation, the higher the intensity. Further, the higher the density of the arc-shaped tie rods 21 arranged up and down, the higher the strength. A plurality of arcuate tension rods 21 each surround the column 3.
Further, the outer shell layer 1 comprises two interconnected semicircular shells 12.
The cross sections of the two semicircular shells 12 are arc-shaped strips, and the cross section of each shell is a circular ring. The two ends of the two semicircular shells 12 are spliced together and connected through bolts. The bolts are numerous and vertically arranged. The concrete in the shell body formed by splicing the semicircular shells 12 is bound, and the arc-shaped pull rod 21 is matched to resist expansion, wherein the arc-shaped pull rod 21 resists expansion by tensile strength after being combined with the concrete.
Further, the support structure 2 further comprises: the upper splicing ring 23 can be split, and the lower end surface of the upper splicing ring is provided with a plurality of threaded holes; the lower splicing ring 24 can be disassembled, and the upper end surface of the lower splicing ring is provided with a plurality of threaded holes. The two ends of the support rods 25 are respectively in threaded connection with corresponding threaded holes on the upper splicing ring 23 and the lower splicing ring 24; wherein, each support rod 25 is connected with a plurality of support blocks 26 along the length direction.
On the plurality of support rods 25, the support blocks 26 positioned at the same height form a support group together to support an arc-shaped pull rod 21; the number of the supporting blocks 26 on each supporting rod 25 determines the number of the supportable arc-shaped pull rods 21, and further influences the strength of the concrete layer 4 after subsequent reinforcement. More importantly, the installation of the whole device has certain difficulty, the main structure of the device is the outer shell layer 1, the arc-shaped pull rod 21 and the concrete layer 4 poured at the position of the arc-shaped pull rod 21, however, the arc-shaped pull rod 21 is inconvenient to put after the outer shell layer 1 is built, and particularly under the condition that the outer shell layer 1 is high enough; therefore, the device firstly builds the support rod 25, firstly splits the upper splicing ring 23 and the lower splicing ring 24, then respectively connects half of the upper splicing ring 23 and half of the lower splicing ring 24 with the support rod 25, then splices the upper splicing ring 23 and the lower splicing ring 24 around the concrete column 3, connects the two rings into a whole splicing ring by bolts, then places the arc-shaped pull rods 21 at different heights, then opens holes on the semi-circular shells 12 at two sides, folds the two rings together, and the ends of the arc-shaped pull rods 21 pass through the semi-circular shells 12 and then are fixedly connected with the two rings; the device is convenient and quick to build.
Further, an open arc-shaped channel 261 is formed in the upper end face of the supporting block 26; the arc channel 261 is used for supporting the arc pull rod 21.
The arcuate tie rod 21 is positioned within the arcuate channel 261. After concrete is poured at the position of the supporting structure 2, when the arc-shaped pull rod 21 is pulled due to the expansion of the concrete, the supporting block 26 forms a reaction force on the arc-shaped pull rod 21 to help the arc-shaped pull rod 21 to resist deformation, so that the strength is further improved; furthermore, the vertical support bar 25 pulls on the support block 26, which means that the vertical support bar 25 also helps the curved draw bar 21 to resist deformation. The two sides of each supporting block 26 are jointed with a tensile block 22; that is, when the arc-shaped draw bar 21 is placed on the supporting blocks 26, the tensile blocks 22 on both sides of each supporting block 26 hold the supporting blocks 26. The supporting blocks 26 are used for supporting the arc-shaped pull rods 21 and increasing the structural degree of the supporting rods 25 and the concrete like the tensile blocks 22; the strength is improved.
Further, the fixing structure 5 includes:
a fixed block 51, which is provided with a abdicating hole and one side of which is attached to the outer wall of the shell layer 1;
a fixing nut 52 attached to one surface of the fixing block 51;
wherein, the end of the arc-shaped pull rod 21 passes through the abdicating hole and then is in threaded connection with the fixed nut 52.
The fixing block 51 is attached to the outer shell layer 1, so that the area of the outer shell layer 1, which is applied by the arc-shaped pull rod 21, is increased, the stress of the outer shell layer 1 is uniform, and the stress is balanced with the expansion force of concrete; the local stress damage of the shell layer 1 is avoided.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. The utility model provides a high load self-restraint reinforcing apparatus of existing reinforced concrete post which characterized in that includes:
a shell layer disposed around the concrete column;
the supporting structure is arranged between the shell layer and the concrete column;
wherein, the supporting structure is provided with an arc-shaped pull rod; the arc-shaped pull rods are arranged along the outer circumference of the concrete column, and two ends of each arc-shaped pull rod penetrate through the outer shell layer respectively and are connected with the fixing structures; the fixed structure is abutted against the outer wall of the outer shell layer; a poured concrete layer is arranged between the outer shell layer and the concrete column.
2. A high load self-restraining reinforcement for an existing reinforced concrete column according to claim 1, wherein the arcuate tie bar is provided with a plurality of tension blocks along its length.
3. A high load self-restraining reinforcement for existing reinforced concrete columns according to claim 2 further including a plurality of pegs attached to the inner wall of the outer shell.
4. A high load self-restraining reinforcement for existing reinforced concrete columns according to claim 3, characterized in that there are a plurality of curved tie rods; the arc-shaped pull rods are in staggered rotary arrangement from bottom to top in sequence by taking the concrete column as a center.
5. A high load self-restraining reinforcement for existing reinforced concrete columns according to any one of claims 1 to 4 wherein the outer shell comprises two interconnected semi-circular shells.
6. A high load self-restraining reinforcement for an existing reinforced concrete column according to claim 5, wherein the support structure further comprises:
the upper splicing ring can be split, and a plurality of threaded holes are formed in the lower end face of the upper splicing ring;
the lower splicing ring can be split, and the upper end surface of the lower splicing ring is provided with a plurality of threaded holes;
the two ends of the support rods are respectively in threaded connection with corresponding threaded holes in the upper splicing circular ring and the lower splicing circular ring;
wherein, each support rod is connected with a plurality of support blocks along the length direction.
7. The high-load self-restraining reinforcing device for the existing reinforced concrete column according to claim 6, wherein the upper end face of the supporting block is provided with an open arc-shaped channel; the arc-shaped channel is used for supporting the arc-shaped pull rod.
8. A high load self-restraining reinforcement for an existing reinforced concrete column according to claim 7, wherein the securing structure comprises:
the fixed block is provided with a abdicating hole, and one surface of the fixed block is attached to the outer wall of the shell layer;
the fixing nut is attached to one surface of the fixing block;
wherein, the tip of arc pull rod passes behind the hole of stepping down and is connected with fixation nut threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210278369.3A CN114809693B (en) | 2022-03-21 | 2022-03-21 | High-load self-restraint reinforcing device for existing reinforced concrete column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210278369.3A CN114809693B (en) | 2022-03-21 | 2022-03-21 | High-load self-restraint reinforcing device for existing reinforced concrete column |
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| CN114809693A true CN114809693A (en) | 2022-07-29 |
| CN114809693B CN114809693B (en) | 2023-05-02 |
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| Publication number | Publication date |
|---|---|
| CN114809693B (en) | 2023-05-02 |
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