CN210117943U - Active unloading prestressed steel pipe column - Google Patents
Active unloading prestressed steel pipe column Download PDFInfo
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- CN210117943U CN210117943U CN201920727680.5U CN201920727680U CN210117943U CN 210117943 U CN210117943 U CN 210117943U CN 201920727680 U CN201920727680 U CN 201920727680U CN 210117943 U CN210117943 U CN 210117943U
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- pipe column
- column body
- steel pipe
- unloading
- prestressed steel
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Abstract
The utility model discloses an active unloading prestressed steel pipe column, which comprises a pipe column body and steel strands; the pipe column body is a round steel pipe column, two ends of the pipe column body extend outwards along the radial direction to form support flanges, and the support flanges and the pipe column body are of an integral structure; a plurality of anchoring ends are uniformly arranged at the upper part of the peripheral wall of the tubular column body along the circumferential direction; a plurality of tensioning ends matched with the anchoring ends are uniformly arranged at the lower part of the outer peripheral wall of the tubular column body along the circumferential direction; the utility model has the advantages that firstly, the active unloading prestressed steel pipe column of the utility model is simple and convenient to manufacture, the required material is easy to obtain, the cost is lower, the local quick and effective support of the structure can be realized, and the local unloading in the reinforcing construction can be realized to reduce the adverse effect of the secondary stress on the reinforcing structure; secondly, the utility model discloses an initiative uninstallation prestressing force steel tubular column usage is extensive, and both visual concrete need regard as interim uninstallation measure, can regard as permanent support to use again behind the concreting protective layer.
Description
Technical Field
The utility model relates to a construction technical field especially relates to an initiative uninstallation prestressing force steel pipe post.
Background
In the prior art, the local unloading of the building structure is mostly realized by additionally arranging a support, a certain gap is reserved on the top surface of the support on the ground of a supported part due to the additionally arranged concrete support because of the construction requirement of pouring, and the concrete support is tightly combined with the supported part by expanding concrete or filling other gaskets with higher rigidity so as to unload the local load of the supported member; when the section steel is used as a support, a gap is still inevitably left between the support and the supported part, and the unloading function is effectively realized by filling the gasket. Concrete and section steel supports are tightly combined with a supported part by using a liner material, and the liner material is difficult to realize complete tight combination with the supported part and uniform stress.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
The utility model discloses the technical problem that needs to solve lies in, provides an initiative uninstallation prestressing force steel pipe post, solves the requirement that current reinforced concrete structure need unload unnecessary load under the particular case to engineering actual problem is solved to economy, simple and convenient method.
2. Technical scheme
In order to realize the purpose, the technical scheme of the utility model is that: an active unloading prestressed steel pipe column comprises a pipe column body and steel strands; the pipe column body is a round steel pipe column, two ends of the pipe column body extend outwards along the radial direction to form support flanges, and the support flanges and the pipe column body are of an integral structure; a plurality of anchoring ends are uniformly arranged at the upper part of the peripheral wall of the tubular column body along the circumferential direction; a plurality of tensioning ends matched with the anchoring ends are uniformly arranged at the lower part of the outer peripheral wall of the tubular column body along the circumferential direction; one end of the steel strand is fixed at the anchoring end, and the other end of the steel strand is fixed at the tensioning end, so that the steel strand is in a stretching state.
In the above prestressed steel pipe column for active unloading, the pipe column body is a pressed steel pipe column.
The prestressed steel pipe column for active unloading is characterized in that the number of the anchoring ends and the number of the tensioning ends are at least 4.
In the above prestressed steel pipe column for active unloading, the anchoring end is one of a clip type anchorage, a support type anchorage or a conical plug type anchorage, and is welded on the outer peripheral wall of the pipe column body.
In the active unloading prestressed steel pipe column, the tensioning end is a tensioning anchor and is welded to the outer peripheral wall of the pipe column body.
The prestressed steel pipe column for active unloading is characterized in that the steel strand is parallel to the axis of the pipe column body.
In the above prestressed steel pipe column for active unloading, the top surface of the pipe column body extends radially inward to form a reinforcing flange, and the reinforcing flange and the pipe column body are of an integral structure.
The active unloading prestressed steel pipe column is characterized in that the steel strand is in a specification including but not limited toThe steel strand of (1).
3. Advantageous effects
To sum up, the beneficial effects of the utility model reside in that:
(1) the prestressed steel pipe column for active unloading of the utility model is simple and convenient to manufacture, the required material is easy to obtain, the cost is low, the structure can be locally and quickly and effectively supported, and the local unloading in the reinforcing construction can be realized to reduce the adverse effect of the secondary stress on the reinforcing structure;
(2) the utility model discloses an initiative uninstallation prestressing force steel column usage is extensive, and both visual concrete need regard as interim uninstallation measure, can regard as permanent support to use again behind the concreting protective layer.
Drawings
Fig. 1 is a schematic structural view of an active unloading prestressed steel pipe column of the present invention;
FIG. 2 is an upper cross-sectional view of an active unloading prestressed steel pipe string according to the present invention;
FIG. 3 is a side cross-sectional view of an active unloading prestressed steel pipe string according to the present invention;
fig. 4 is a schematic structural view of the initial state of the pipe column body in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a pipe column body in a pin removal compressive stress state according to embodiment 1 of the present invention;
FIG. 6 is a schematic structural view of the pipe column body in the state of concrete pouring in the embodiment 1 of the present invention;
fig. 7 is a schematic structural view of the initial state of the pipe column body according to embodiment 2 of the present invention;
fig. 8 is a schematic structural view of the pipe string body under a state of compressive stress cancellation in embodiment 2 of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1 to 3, an active unloading prestressed steel pipe column includes a pipe column body 1 and steel strands 2; the pipe column body 1 is a round steel pipe column, two ends of the pipe column body 1 extend outwards along the radial direction to form supporting flanges 101, and the supporting flanges 101 and the pipe column body 1 are of an integral structure; a plurality of anchoring ends 3 are uniformly arranged at the upper part of the outer peripheral wall of the tubular column body 1 along the circumferential direction; a plurality of tensioning ends 4 matched with the anchoring ends 3 are uniformly arranged at the lower part of the outer peripheral wall of the tubular column body 1 along the circumferential direction; one end of the steel strand 2 is fixed at the anchoring end 3, and the other end of the steel strand is fixed at the tensioning end 4, so that the steel strand 2 is in a stretching state.
The pipe column body 1 is a pressed steel pipe column.
The number of the anchoring ends 3 and the tensioning ends 4 is at least 4.
The anchoring end 3 is one of a clamping piece type anchorage device, a supporting type anchorage device or a conical plug type anchorage device and is welded on the outer peripheral wall of the tubular column body 1.
The tension end 4 is a tension anchor and is welded on the outer peripheral wall of the tubular column body 1.
The steel strand 2 is parallel to the axis of the pipe column body 1.
The top surface of the pipe column body 1 extends radially inward to form a reinforcing flange 102, and the reinforcing flange 102 is an integral structure with the pipe column body 1.
The steel strand 2 adopts the specification including but not limited toThe steel strand of (1).
The using method comprises the following steps: firstly, respectively anchoring 4 steel strands 2 to the anchoring ends 3; secondly, simultaneously tensioning 4 steel strands 2 at the tensioning end 4 of the steel strand 2, and anchoring the steel strand 2 at the tensioning end 4 after tensioning the steel strand 2 according to the calculated tensioning force; then, the pipe column body 1 which is deformed and shortened in height under pressure is placed at the unloading position required by the structural member, and 4 steel strands 2 are simultaneously expanded; and finally, when the active unloading prestressed steel pipe column needs to be removed, tensioning the 4 steel strands 2 again, so that the pipe column body 1 is removed after the height of the pipe column body is compressed, deformed and shortened.
Example 1:
as shown in fig. 4-6. In the embodiment, because the load of the reinforced concrete frame beam is overlarge, a supporting point is additionally arranged to remove the load inside the bent member span, and the bent member span is reduced.
As shown in fig. 4, the net height of the frame beam is H, and the height H of the prestressed steel pipe column for active unloading is designed to be H. And simultaneously tensioning 4 steel strands 2 by using a feed-through jack, wherein the tensioning force of each steel strand 2 is P. The length of an L section between the anchoring end 3 of each group of prestressed steel strands and the tensioning end 4 of the prestressed steel strands close to the end side of the tubular column body 1 is L. The tension of the 4 steel strands 2 is 4P, and the pressure formed by the prestressed steel strand anchoring end 3 and the prestressed steel strand tensioning end 4 on the L-shaped short section of the tubular column body 1 enables the pressure stress of-4P/S to be generated in the L section. The compressive strain-4 PE is generated in the section by the compressive stress-4P/S in the section L according to Hooke' S laws(S) compressive strain to increase L segment length by △ L-4 PEsL/S, where the L section is L' in length, since no strain is generated in other height sections of the column body 1, an increase △ L of-4 PE is generated in the entire column body 1sl/S, the height H of the prestressed steel pipe column is H + △ l-H-4 PEsl/S. Reduce the heightThe active unloading prestress steel pipe column is stably arranged at the lower part of the position needing to be additionally provided with the supporting point, and 4 steel strands 2 are simultaneously released after the contact surface of the frame beam and the top surface of the active unloading prestress steel pipe column is leveled. As shown in fig. 5, the steel pipe column in the elastic stage is restored to the original state after the compressive stress is removed, and is tightly coupled to the frame beam to exert a supporting function. If the active unloading prestressed steel pipe column is used as a permanent or long-term supporting member, the outer side of the body of the pipe column body 1 is wrapped with a steel wire mesh and provided with a plurality of studs, and concrete is poured on the outer surface of the column body to be used as a protective layer, so that the active unloading prestressed steel pipe column is protected from being corroded to quit the pressure-bearing work, as shown in fig. 6.
Example 2:
as shown in fig. 7 and 8. In the embodiment, the reinforced concrete column does not meet the capability of bearing vertical load any more due to design, construction defects or load increase exceeding the design, and the like, so that the section needs to be increased to strengthen the compressive bearing capacity of the reinforced concrete column. If the reinforcement is directly carried out, adverse effects caused by secondary stress can be generated in subsequent use, and the reinforced concrete column needs to be reinforced after being unloaded to the maximum extent.
As shown in fig. 7, the active unloading prestressed steel pipe column is placed at the ends of two beams which are connected with the column to be reinforced and transmit load to the column according to the method shown in fig. 4 in the embodiment 1. as shown in fig. 8, the pipe column body 1 in the elastic stage is restored to the original state after the compressive stress is removed, and then is tightly combined with the beam bottom to actively unload the load transmitted by the beam to the reinforced concrete column to be reinforced, after the reinforced concrete column is reinforced and reaches the designed strength, 4 steel strands 2 are simultaneously tensioned by a tensioning force P, so that the active unloading prestressed steel pipe column can be removed after the length of the pipe column body 1 is shortened by △ l.
What just go up be the preferred embodiment of the utility model, do not therefore restrict the patent scope of the utility model, all utilize the equivalent structure transform of the content of the specification of the utility model, or direct or indirect application is affiliated in the technical field of other relevant products, all the same reason is included in the patent protection scope of the utility model.
Claims (8)
1. The utility model provides an active uninstallation prestressing force steel tubular column which characterized in that: comprises a pipe column body (1) and a steel strand (2); the pipe column body (1) is a round steel pipe column, two ends of the pipe column body (1) extend outwards along the radial direction to form supporting flanges (101), and the supporting flanges (101) and the pipe column body (1) are of an integrated structure; a plurality of anchoring ends (3) are uniformly arranged on the upper part of the outer peripheral wall of the tubular column body (1) along the circumferential direction; a plurality of tension ends (4) matched with the anchoring ends (3) are uniformly arranged at the lower part of the outer peripheral wall of the tubular column body (1) along the circumferential direction; one end of the steel strand (2) is fixed to the anchoring end (3), and the other end of the steel strand is fixed to the tensioning end (4), so that the steel strand (2) is in a stretching state.
2. The active unloading prestressed steel pipe string of claim 1, wherein: the pipe column body (1) is a pressed steel pipe column.
3. The active unloading prestressed steel pipe string of claim 1, wherein: the number of the anchoring ends (3) and the tensioning ends (4) is at least 4.
4. The active unloading prestressed steel pipe string of claim 1, wherein: the anchoring end (3) is one of a clamping piece type anchorage device, a supporting type anchorage device or a conical plug type anchorage device and is welded on the outer peripheral wall of the tubular column body (1).
5. The active unloading prestressed steel pipe string of claim 1, wherein: the tension end (4) is a tension anchor and is welded on the outer peripheral wall of the tubular column body (1).
6. The active unloading prestressed steel pipe string of claim 1, wherein: the steel strand (2) is parallel to the axis of the pipe column body (1).
7. The active unloading prestressed steel pipe string of claim 1, wherein: the top surface of the pipe column body (1) extends inwards in the radial direction to form a reinforcing flange (102), and the reinforcing flange (102) and the pipe column body (1) are of an integral structure.
8. The active unloading prestressed steel pipe string of claim 1, wherein: the steel strand (2) adopts the specification including but not limited to
The steel strand of (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920727680.5U CN210117943U (en) | 2019-05-21 | 2019-05-21 | Active unloading prestressed steel pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920727680.5U CN210117943U (en) | 2019-05-21 | 2019-05-21 | Active unloading prestressed steel pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210117943U true CN210117943U (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920727680.5U Expired - Fee Related CN210117943U (en) | 2019-05-21 | 2019-05-21 | Active unloading prestressed steel pipe column |
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| CN (1) | CN210117943U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056206A (en) * | 2019-05-21 | 2019-07-26 | 哈尔滨工业大学 | It is a kind of actively to unload prestress steel tubing string |
| CN113281184A (en) * | 2021-06-15 | 2021-08-20 | 王永泉 | Reliability test method for reinforced concrete frame column active unloading scheme |
-
2019
- 2019-05-21 CN CN201920727680.5U patent/CN210117943U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056206A (en) * | 2019-05-21 | 2019-07-26 | 哈尔滨工业大学 | It is a kind of actively to unload prestress steel tubing string |
| CN110056206B (en) * | 2019-05-21 | 2024-05-24 | 哈尔滨工业大学 | Initiative unloading prestress steel pipe column |
| CN113281184A (en) * | 2021-06-15 | 2021-08-20 | 王永泉 | Reliability test method for reinforced concrete frame column active unloading scheme |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 Termination date: 20210521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |