CN210195317U - Reinforced structure of rectangular cross-section axial pressurized reinforced concrete column - Google Patents
Reinforced structure of rectangular cross-section axial pressurized reinforced concrete column Download PDFInfo
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- CN210195317U CN210195317U CN201920092669.6U CN201920092669U CN210195317U CN 210195317 U CN210195317 U CN 210195317U CN 201920092669 U CN201920092669 U CN 201920092669U CN 210195317 U CN210195317 U CN 210195317U
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- reinforced concrete
- concrete column
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- reinforced
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 69
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 229910052602 gypsum Inorganic materials 0.000 claims description 11
- 239000010440 gypsum Substances 0.000 claims description 11
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 12
- 230000002787 reinforcement Effects 0.000 abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 description 3
- 235000011151 potassium sulphates Nutrition 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model discloses a reinforced structure of rectangular cross section axial pressurized reinforced concrete column mainly includes the preloading of reinforced concrete column, and the steel sheet arch camber, steel sheet exhibition flat three stage. Rectangular concrete columns are first preloaded. Secondly, a pair of angle steels are respectively arranged at the top and the foot of the column, a reinforcing steel bar is respectively arranged at two sides of the middle position of the column and positioned between the concrete and the steel plates, and then the two rectangular steel plates are fixed at two sides of the concrete column through stainless steel bolts, so that the steel plates arch. And finally, the bolts are symmetrically arranged along the column length and are screwed down according to a certain sequence, so that the steel plate is gradually flattened, and the steel plate and the reinforced concrete column form an effective assembly to bear force together. The utility model discloses stress lag problem between concrete and the steel sheet in the loaded reinforced concrete column that exists in can effectively solving the reinforcement of existing rectangle concrete column has also strengthened the reinforcement of concrete column bight simultaneously.
Description
Technical Field
The utility model relates to a building engineering field, concretely relates to reinforced structure of rectangular cross section axial pressurized reinforced concrete column.
Background
In recent decades, existing buildings, bridges and a large amount of infrastructure often cause great economic loss due to severe service environment and long-term overhaul. Since the pillars in the existing concrete structure are the main vertical bearing members, a large number of researchers at home and abroad develop tests and theoretical researches for reinforcing the reinforced concrete pillars by adopting steel plates since the end of the last century, and relatively mature reinforcing technical means are provided. However, the research on the steel plate reinforced concrete column usually focuses on the mechanical property of the reinforced concrete column after the steel plate is reinforced, and the reinforcing effect of the loaded reinforced concrete column is less considered. Meanwhile, the carbon fiber composite material is difficult to effectively reinforce the corner of the reinforced concrete column with the rectangular cross section. In addition, in the loaded reinforced concrete column, stress hysteresis effect exists between concrete and a steel plate, so that the problems of low reinforcing efficiency, unobvious reinforcing effect and the like are caused, and the problems are rarely reported in the previous research. Therefore, the technical difficulties of the series set great obstacles for the wide popularization and application of the steel plate reinforced rectangular section reinforced concrete column in the field of structural reinforcement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a construction is convenient, the steady quality, consolidate effectual reinforced structure of rectangle cross-section reinforced concrete column, be applicable to the reinforcement of rectangle cross-section reinforced concrete column (mound) in existing building, the bridge.
The utility model adopts the technical proposal that: a reinforcing structure of a rectangular-section axial compression reinforced concrete column comprises plain steel bars, a reinforced concrete column (or pier), steel plates, angle steel, bolts and sprayed gypsum;
a pair of angle steels are respectively arranged at the column top and the column base of the reinforced concrete column, and gaps between the angle steels at the column top and the column base and the reinforced concrete column are filled by adopting sprayed gypsum;
and two smooth round steel bars are respectively placed on two sides of the middle position of the reinforced concrete column, the two steel plates are fixed on two sides of the reinforced concrete column through bolts, and the smooth round steel bars are positioned between the reinforced concrete column and the steel plates.
Preferably, the steel plate is made of low-carbon steel.
Preferably, the section of the reinforced concrete column is rectangular.
Preferably, the bolt is a stainless steel anchor bolt.
Preferably, the mass mixing ratio of the sprayed gypsum material is gypsum: potassium sulfate: water-37.5: 1: 15.
A method for adopting the rectangular-section axial compression reinforced concrete column of the reinforcement structure comprises the following steps:
1) the method comprises the following steps of firstly, preloading the reinforced concrete column with the rectangular cross section, wherein the existing stressed reinforced concrete column does not need to be preloaded, and the reinforced concrete column is kept in a loaded state before being reinforced;
2) secondly, a pair of angle steels are respectively arranged at the top and the column base of the reinforced concrete column, smooth round steel bars are respectively placed on two sides of the middle position of the reinforced concrete column and positioned between the reinforced concrete column and the steel plates, and the two steel plates are fixed on two sides of the reinforced concrete column through bolts; the bolts are symmetrically arranged at the top, the middle and the foot of the column, and the other bolts are symmetrically arranged left and right and up and down;
3) the steel plate is arched due to the restraint of the middle steel bar of the reinforced concrete column, and the gaps between the angle steels at the column top and column base and the reinforced concrete column are filled by adopting sprayed gypsum;
4) and finally, taking out the steel bars, burying and screwing bolts in the middle of the reinforced concrete column, wherein the steel plate presents a high-order buckling mode, and then, symmetrically screwing the bolts except the middle of the column, the column base and the column top in sequence, so that the steel plate is flattened, then, unscrewing a small amount of each bolt, and screwing each bolt again, so that part of stress in the reinforced concrete column is transferred to the steel plate, and the reinforced concrete column is reinforced.
Preferably, all the bolts are arranged in an even number of rows along the column length direction.
Preferably, the steel plates should be reinforced on two sides of the rectangular reinforced concrete column with a large area, and four steel plates may be used to reinforce all four sides.
Preferably, the diameter of the plain steel bar can be selected according to the requirement of the required arching radian, but is not too large, so that the reinforced concrete column is prevented from being in a tension state after being reinforced.
The utility model discloses an arc (after the arch camber) steel sheet carries out axle center pressurized to receiving lotus rectangular cross section reinforced concrete column and consolidates, and this reinforcement method is simple and easy reliable, consolidates efficiently, has alleviated stress hysteresis between steel sheet and the concrete column that exists in the existing reinforced concrete column reinforcement of tradition effectively, has also solved the problem that rectangular cross section reinforced concrete column bight is difficult to effectively consolidate simultaneously. The construction efficiency is high, the square reinforced concrete column on site can be quickly repaired and reinforced, the bearing capacity of the column is greatly improved, the service lives of the existing building structure, the bridge structure and the infrastructure are prolonged, and the method has great economic and social benefits.
The utility model has the advantages that: 1. the steel plate can be prefabricated, the reinforcing efficiency is high, and the quality is stable;
2. compared with materials such as carbon fiber composite materials, the steel has low price and good economical efficiency;
3. angle steels are arranged on the top and the foot of the column, so that the weak area of the column corner can be effectively reinforced;
4. the reinforcing method can reduce the stress hysteresis between the concrete and the steel plate caused by the existing (pre-loaded) load, and improve the reinforcing efficiency of the steel plate;
5. the arching radian of the steel plate is improved by increasing the diameter of the steel bar, so that the bearing capacity of the reinforced concrete column is improved;
6. by increasing the thickness of the steel plate, the bearing capacity and the ductility of the reinforced concrete column are improved.
Drawings
FIG. 1a is a schematic diagram of steel plate reinforcement of a rectangular section reinforced concrete column of the present invention;
FIG. 1b is a side view of FIG. 1 a;
FIG. 2 is a schematic view of the arrangement of reinforcing bolts for a reinforced concrete column of the present invention;
FIG. 3 illustrates the arching method of the steel plate of the present invention;
FIG. 4 is a schematic view of the steel plate flattening measure of the present invention;
fig. 5 is a schematic view of the steel plate of the present invention after being flattened;
fig. 6 is a schematic view of the utility model after the bolt is loosened;
FIG. 7 is a schematic view of the steel plate flattening after the bolt is fastened again according to the present invention;
fig. 8a is a schematic view illustrating reinforcement of a steel plate of a reinforced concrete pier with a rectangular cross section according to the present invention;
FIG. 8b is a side view of FIG. 8 a;
fig. 9 is the reinforced concrete pier reinforcing bolt of the utility model discloses a schematic diagram of arranging.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Example 1:
a reinforcing method for a rectangular section reinforced concrete column of a civil building. Two smooth steel bars 1 are symmetrically arranged in the middle of a rectangular section loaded reinforced concrete column 2, two rectangular steel plates 3 are attached to two side faces of the rectangular reinforced concrete column 2 along the column length, a pair of angle steels 4 are respectively arranged at the column top and the column base, and the steel plates 3 are fastened at the column top and the column base by adopting double rows of stainless steel anchor bolts 5 (figure 2) to arch the steel plates (figure 3). And filling gaps between the angle steels 4 and the concrete at the top and the bottom of the column by using sprayed gypsum 6. Finally, the plain steel bar 1 is taken out, the stainless steel anchoring bolts 5 are embedded in the middle of the column and screwed, the steel plate is in a high-order buckling mode (figure 4), the bolts 5 except the middle of the column, the column base and the column top are sequentially and symmetrically screwed, so that the steel plate 3 is flattened (figure 5), then the bolts 5 are loosened a little (figure 6), and the bolts 5 are screwed again, so that part of stress in the reinforced concrete column 2 is transferred to the steel plate 3, and the reinforced concrete column 2 with the rectangular cross section is effectively reinforced (figure 7). The mass proportion of the sprayed gypsum 6 material is as follows: potassium sulfate: water-37.5: 1: 15. The steel plate 3 is made of low-carbon steel.
Example 2:
as shown in fig. 8a and 8b, a reinforcing method for a rectangular-section reinforced concrete pier of a large bridge. Two smooth steel bars 1 are symmetrically arranged in the middle of a rectangular section loaded reinforced concrete column 2 (pier), two rectangular steel plates 3 are attached to two side edges of the rectangular reinforced concrete column 2 along the column length, a pair of angle steels 4 are respectively arranged at the column top and the column base, and the steel plates 3 are fastened at the column top and the column base by adopting four rows of stainless steel anchor bolts 5 (figure 9) to arch the steel plates (figure 3). And filling gaps between the angle steels 4 and the concrete at the top and the bottom of the column by using sprayed gypsum 6. And finally, taking out the plain steel bar 1, burying the stainless steel anchoring bolts 5 in the middle of the column and screwing, wherein the steel plate is in a high-order buckling mode (figure 4), and then, symmetrically screwing the bolts 5 except the middle of the column, the column base and the column top in sequence, so that the steel plate 3 is flattened (figure 5), then, unscrewing the bolts 5 a little (figure 6), and screwing the bolts 5 again, so that the rectangular-section reinforced concrete column 2 is effectively reinforced (figure 7). The mass proportion of the sprayed gypsum 6 material is as follows: potassium sulfate: water-37.5: 1: 15. The steel plate 3 is made of low-carbon steel.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. To those skilled in the art, many changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a reinforced structure of rectangular cross section axial pressurized reinforced concrete column which characterized in that: the steel plate comprises plain round steel bars, reinforced concrete columns, steel plates, angle steel, bolts and sprayed gypsum;
a pair of angle steels are respectively arranged at the column top and the column base of the reinforced concrete column, and gaps between the angle steels at the column top and the column base and the reinforced concrete column are filled by adopting sprayed gypsum;
and two smooth round steel bars are respectively placed on two sides of the middle position of the reinforced concrete column, the two steel plates are fixed on two sides of the reinforced concrete column through bolts, and the smooth round steel bars are positioned between the reinforced concrete column and the steel plates.
2. A reinforcing structure for a rectangular cross-section axially compressed reinforced concrete column according to claim 1, characterized in that: the steel plate is made of low-carbon steel.
3. A reinforcing structure for a rectangular cross-section axially compressed reinforced concrete column according to claim 1, characterized in that: the section of the reinforced concrete column is rectangular.
4. A reinforcing structure for a rectangular cross-section axially compressed reinforced concrete column according to claim 1, characterized in that: the bolts are stainless steel anchoring bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092669.6U CN210195317U (en) | 2019-01-20 | 2019-01-20 | Reinforced structure of rectangular cross-section axial pressurized reinforced concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092669.6U CN210195317U (en) | 2019-01-20 | 2019-01-20 | Reinforced structure of rectangular cross-section axial pressurized reinforced concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195317U true CN210195317U (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920092669.6U Expired - Fee Related CN210195317U (en) | 2019-01-20 | 2019-01-20 | Reinforced structure of rectangular cross-section axial pressurized reinforced concrete column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629847A (en) * | 2019-01-20 | 2019-04-16 | 南京工业大学 | Reinforcing structure and method for rectangular-section axial compression reinforced concrete column |
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2019
- 2019-01-20 CN CN201920092669.6U patent/CN210195317U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629847A (en) * | 2019-01-20 | 2019-04-16 | 南京工业大学 | Reinforcing structure and method for rectangular-section axial compression reinforced concrete column |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 Termination date: 20220120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |