CN220100395U - Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates - Google Patents
Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates Download PDFInfo
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- CN220100395U CN220100395U CN202320579175.7U CN202320579175U CN220100395U CN 220100395 U CN220100395 U CN 220100395U CN 202320579175 U CN202320579175 U CN 202320579175U CN 220100395 U CN220100395 U CN 220100395U
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- steel bar
- upsetting
- pretensioned
- bolt
- plate
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- 239000004567 concrete Substances 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims description 77
- 239000010959 steel Substances 0.000 title claims description 77
- 238000004873 anchoring Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 abstract description 13
- 238000005452 bending Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Abstract
The utility model relates to a concrete bent frame column, which aims to realize mechanical anchoring of prestressed reinforcement at the end part of a column foot, so that the reinforcement stress of the column foot is equal to the reinforcement stress of the middle part, and the bending bearing capacity of the column foot is improved.
Description
Technical Field
The utility model relates to a concrete frame column, in particular to a pretensioned prefabricated prestressed steel bar concrete frame column with end anchor plates.
Background
At present, the building industry modernization is greatly promoted, and the most important content is to use assembled building, namely building like automobile building. The method is mainly characterized by comprising the steps of standardized design, industrial production, assembly construction, integrated decoration, informatization management and intelligent application. The single-layer industrial factory building is simple in form, few in component types, particularly suitable for the application of prefabricated components and combined with prestressed high-strength steel bars, and the pretensioned method for prefabricating the prestressed concrete row frame column can more embody the advantages of the prefabricated components. This is not practical in both conventional prefabrication and current cast in place approaches.
The conventional pretensioning method is used for prefabricating the prestressed component, namely pretensioning prestressed steel bars, pouring concrete, shearing the prestressed steel bars at the beam ends after the concrete reaches the strength, releasing the prestressed steel bars, pre-stressing the prestressed steel bars in the concrete component by means of resilience force of the concrete, wherein the stress at the prestressed steel bar beam ends is 0, and gradually increasing the stress to the midspan by means of bond strength of the concrete. For a general simply supported beam plate, after a concrete member is subjected to load bending, the end bending moment is 0, and the midspan bending moment is the largest, which is just matched with the stress of a prestressed reinforcement, so that the pretensioned prefabricated prestressed member is particularly suitable for the simply supported beam plate.
For the row frame column, the stressed bending moment is generally small at the upper part and large at the lower part, the top part is 0, and the maximum bending moment is at the column foot, so that the traditional pretensioning method is obviously unsuitable for the component.
In summary, the problem to be solved in the prior art is to make the prestressed reinforcement realize mechanical anchoring at the end of the column base, so that the reinforcement stress of the column base is equal to the reinforcement stress of the middle part.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to realize mechanical anchoring of the prestressed reinforcement at the end part of the column base, the reinforcement stress of the column base is equal to the reinforcement stress of the middle part, so that the bending bearing capacity of the column base is improved, and the pretensioned prefabricated prestressed steel bar concrete row frame column with the end anchor plate is provided.
The technical scheme adopted for solving the technical problems is as follows: the pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plate includes main body, several spiral groove steel bars arranged at intervals in the circumference of the main body, free anchor end on the top of the spiral groove steel bar, end upsetting in the bottom of the spiral groove steel bar, upsetting end plate on the end upsetting,
the circumference of the upsetting end plate is provided with a steel bar anchoring hole matched with the end upsetting and the spiral groove steel bar, the side surface of the steel bar anchoring hole is provided with a bolt stretching hole, and the stretching bolt is arranged in the bolt stretching hole.
Further, the number of the bolt tensioning holes is equal to that of the steel bar anchoring holes.
Further, the bolts Zhang Lakong are arranged on the side surfaces of the steel bar anchoring holes and are communicated with the steel bar anchoring holes.
Further, the aperture of the bolt Zhang Lakong is larger than that of the steel bar anchoring hole; the steel bar anchoring hole is boss-shaped in the wall thickness direction of the upsetting end plate, and the aperture near the upper side of the wall thickness of the upsetting end plate is smaller than the aperture near the lower side of the wall thickness of the upsetting end plate.
Further, the upsetting end plate is a rectangular frame plate and is provided with a length side and a width side, steel bar anchoring holes are formed in the outer side surfaces of two ends of the length side, and bolts Zhang Lakong are arranged on the side edges of the steel bar anchoring holes.
Further, the inner wall of the bolt Zhang Lakong is provided with internal threads which are matched with external threads on the tensioning bolt.
The pre-tensioning method for prefabricating the prestressed steel bar concrete bent column with the end anchor plate has the advantages that the pre-tensioning method for prefabricating the prestressed steel bar concrete bent column with the end anchor plate can be used as a column in a single-layer industrial factory building, the prefabricated prestressed concrete bent column adopts high-strength steel bars and high-strength concrete, the tensile strength of the prestressed steel bar concrete bent column is 1000MPa, the tensile strength is far greater than 360MPa of common hot-rolled three-stage steel HRB400, the steel consumption of main steel bars is saved by 50%, and the prestressed concrete bent column is not easy to crack. The utility model adopts a mechanical anchoring mode at the root of the column, and the prestressed reinforcement is a spiral groove steel bar, so that the prestressed reinforcement can realize mechanical anchoring at the end part of the column base, and the reinforcement stress of the column base is equal to that of the middle part.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a block diagram of the tightening structure of the upper column stirrup in fig. 1.
Fig. 3 is a block diagram of the stirrup of the lower column of fig. 1.
Fig. 4 is a schematic view of the structure of the upset end plate of the present utility model in cooperation with a helical channel bar.
Figure 5 is a top view of the upset end plate of the present utility model.
Fig. 6 is a bent moment diagram of a bent column.
Fig. 7 is a prestress diagram of a spiral groove steel bar.
In the figure: 1. spiral groove steel bar, 2, free anchor end, 3, end upsetting, 4, tensioning bolt, 5, bolt Zhang Lakong, 6, steel bar anchor hole, 7, upset end plate.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and a preferred embodiment. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
The pretensioned pre-stressed steel bar concrete frame column with the end anchor plates shown in the figures 1 to 7 comprises a main body, twelve spiral groove steel bars 1 are circumferentially arranged in the main body at intervals, the top ends of the spiral groove steel bars 1 are free anchoring ends 2, the bottom ends of the spiral groove steel bars 1 are processed into end upsets 3, the end upsets 3 of the spiral groove steel bars 1 pass through bolts Zhang Lakong and then translate into steel bar anchoring holes 6, the parts with smaller diameters of the end upsets 3 enter small-bore holes on the upper sides of the steel bar anchoring holes 6, the parts with larger diameters of the end upsets 3 enter large-bore holes on the lower sides of the steel bar anchoring holes 6, and prestress is transferred by extrusion of the end upsets 3 to the walls of the steel bar anchoring holes 6.
The upsetting end plate 7 is a rectangular frame plate and is provided with a length side and a width side, steel bar anchoring holes 6 are formed in the outer side surfaces of two ends of the length side, bolts Zhang Lakong are formed on the side edges of the steel bar anchoring holes 6, the number of the bolts Zhang Lakong is equal to that of the steel bar anchoring holes 6, and adjacent bolts Zhang Lakong and the steel bar anchoring holes 6 are communicated with each other, and are like a hoist as shown in the figure; the aperture of the bolt Zhang Lakong is larger than that of the steel bar anchoring hole 6, the aperture of the bolt tensioning hole 5 is also larger than that of the thickest section of the end upsetting 3, the tensioning bolt 4 is arranged in the bolt Zhang Lakong, and the outer wall of the tensioning bolt 4 is provided with external threads which are mutually matched with internal threads in the bolt Zhang Lakong.
After the spiral groove steel bar 1 is fed, one end of the spiral groove steel bar, which is used for the root of the column foot, is upset. The upsetting end plate 7 is provided with a bolt tensioning hole 5 and is threaded for being screwed into the tensioning bolt 4; the bolt Zhang Lakong is provided with a steel rod anchoring hole 6 for anchoring the spiral groove steel rod 1.
During actual operation, a steel mould of the concrete row frame column can be used as a pedestal, the upsetting end plate 7 is transmitted from the bolt tensioning hole 5, and horizontally slides into the steel bar anchoring hole 6, the tensioning bolt 4 is screwed into the bolt Zhang Lakong to be fixed at one end of the steel mould, the other end of the prestressed steel bar is fixed by adopting a tool type steel bar clamp, the hydraulic jack is used for tensioning, concrete is poured, and after the concrete reaches the strength, the concrete is put into tension and is demoulded.
The foregoing description is merely illustrative of specific embodiments of the utility model, and the utility model is not limited to the details shown, since modifications and variations of the foregoing embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a pretensioned method prefabricated prestressing steel bar concrete row frame post of area end anchor slab, includes main part, its characterized in that: the inner circumference of the main body is provided with a plurality of spiral groove steel bars which are arranged at intervals, the top end of each spiral groove steel bar is a free anchoring end, the bottom end of each spiral groove steel bar is provided with a head upsetting, and the head upsetting is provided with an upsetting end plate;
the circumference of the upsetting end plate is provided with a steel bar anchoring hole matched with the end upsetting and the spiral groove steel bar, the side surface of the steel bar anchoring hole is provided with a bolt stretching hole, and the stretching bolt is arranged in the bolt stretching hole.
2. The pretensioned pre-stressed steel bar concrete grid column with end anchor plate of claim 1, wherein: the number of the bolt tensioning holes is equal to that of the steel bar anchoring holes.
3. Pretensioned pre-stressed steel bar concrete grid column with end anchor plate according to claim 1 or 2, characterized in that: the bolts Zhang Lakong are arranged on the side surfaces of the steel bar anchoring holes and are communicated with the steel bar anchoring holes.
4. The pretensioned pre-stressed steel bar concrete grid column with end anchor plate of claim 1, wherein: the aperture of the bolt Zhang Lakong is larger than that of the steel bar anchoring hole; the steel bar anchoring hole is boss-shaped in the wall thickness direction of the upsetting end plate, and the aperture near the upper side of the wall thickness of the upsetting end plate is smaller than the aperture near the lower side of the wall thickness of the upsetting end plate.
5. The pretensioned pre-stressed steel bar concrete grid column with end anchor plate of claim 1, wherein: the upsetting end plate is a rectangular frame plate and is provided with a length side and a width side, steel bar anchoring holes are formed in the outer side surfaces of the two ends of the length side, and bolts Zhang Lakong are arranged on the side edges of the steel bar anchoring holes.
6. The pretensioned pre-stressed steel bar concrete grid column with end anchor plate of claim 1, wherein: the inner wall of the bolt Zhang Lakong is provided with internal threads which are matched with external threads on the tensioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320579175.7U CN220100395U (en) | 2023-03-22 | 2023-03-22 | Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320579175.7U CN220100395U (en) | 2023-03-22 | 2023-03-22 | Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220100395U true CN220100395U (en) | 2023-11-28 |
Family
ID=88870369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320579175.7U Active CN220100395U (en) | 2023-03-22 | 2023-03-22 | Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220100395U (en) |
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2023
- 2023-03-22 CN CN202320579175.7U patent/CN220100395U/en active Active
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