CN112878490A - Independent external prestress loading device applied to metal beam - Google Patents
Independent external prestress loading device applied to metal beam Download PDFInfo
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- CN112878490A CN112878490A CN202110169565.2A CN202110169565A CN112878490A CN 112878490 A CN112878490 A CN 112878490A CN 202110169565 A CN202110169565 A CN 202110169565A CN 112878490 A CN112878490 A CN 112878490A
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- prestress
- metal beam
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- 239000002184 metal Substances 0.000 title claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims 1
- 238000004873 anchoring Methods 0.000 description 9
- 230000007306 turnover Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Images
Classifications
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides an independent external prestress loading device applied to a metal beam, which comprises the metal beam arranged at the top of the prestress loading device, wherein two ends of the bottom of the metal beam are respectively connected with two ends of a prestress connecting device, and a prestress adjusting device is arranged on the prestress connecting device, so that the distance between the prestress connecting device and the bottom of the metal beam can be adjusted, prestress is applied to the metal beam, and the bearing capacity of the beam is improved under the condition that the section of the beam is not changed. According to the invention, through the design of the external prestress loading device, the external prestress loading of the metal beam is realized, and under the same section level, the bearing capacity of the metal beam can be improved, and the span of the metal beam is increased.
Description
Technical Field
The invention relates to the field of construction engineering, in particular to an independent external prestress loading device applied to a metal beam.
Background
The prestress technology is used for improving the service performance of the structural member, compressive stress is applied to the structural member in advance during construction, and the tensile stress caused by load can be completely or partially offset by the compressive stress during the service of the structure, so that the bearing capacity of the structure is improved.
At present, the prestress technology is widely applied to the field of buildings, but the application is mostly concentrated on the prestress in a reinforced concrete structure body, the loading mode is mostly the prestress in the body and is the permanent prestress loading, after the prestress loading is finished, the prestress cannot be adjusted and changed, and the turnover use and recycling capability is not realized. In the construction process, prestress is applied to the steel bars in the reinforced concrete member mainly by a pre-tensioning method and a post-tensioning method, so that the bearing capacity of the reinforced concrete member is improved, and the large span is realized. The external prestress mainly uses stress steel pull rod or steel brace rod to reinforce the structural member at present, and is characterized in that partial stress is added after the external prestress is forced by a prestress means, the internal force distribution of the original structure is changed, the stress level of the original structure is reduced, and the triple effects of reinforcing, unloading and changing the internal force of the structure are achieved, so that the external prestress is suitable for reinforcing a large-span structure and reinforcing a large-scale structure in a higher stress strain state. At present, the method is less applied in the field of steel structure and reinforced concrete construction.
Metal beams have wide application in both steel structures and reinforced concrete structures, and are generally used as structural members in steel structures or as revolving supports or reinforcements in reinforced concrete structures during construction. When the metal beam is used for turnover support or temporary reinforcement, the metal beam can be generally repeatedly assembled and disassembled, and the position of the metal beam can be continuously changed according to engineering requirements. However, the existing external prestress technology can obviously improve the bearing capacity of the metal beam and has no turnover capacity. The application of the external prestressed metal beam is seriously influenced by the lack of turnover capacity of the existing external prestressed technology.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a self-contained external prestress loading device applied to a metal beam. The invention specifically adopts the following technical scheme.
In order to achieve the above object, a free-standing external prestress loading device applied to a metal beam is provided, which includes: the metal beam is arranged at the top of the prestress loading device; the two ends of the prestress connecting device are respectively connected to the bottoms of the two ends of the metal beam; and the prestress adjusting device is arranged on the prestress connecting device and is used for adjusting the distance between the prestress connecting device and the bottom of the metal beam.
Optionally, the independent external prestress loading device applied to the metal beam is provided, wherein the prestress connecting device includes a first section connecting device, a second section connecting device and a connection adjusting device, and one end of the first section connecting device and one end of the second section connecting device are respectively connected to the connection adjusting device.
Optionally, the independent external prestress loading device applied to the metal beam is characterized in that the other end of the first section of connecting device and the other end of the second section of connecting device are respectively connected to two ends of the metal beam.
Optionally, the independent external prestress loading device applied to the metal beam is provided, wherein the connection adjusting device can shorten or lengthen a distance between one end of the first section of the connecting device and one end of the second section of the connecting device.
Optionally, the independent external prestress loading device applied to the metal beam is characterized in that the connection adjusting device is connected with one end of the first section of connecting device and one end of the second section of connecting device in a threaded manner.
Optionally, the independent external prestress loading device applied to the metal beam is characterized in that the prestress connecting device is made of a steel bar material.
Optionally, the independent external prestress loading device applied to the metal beam further comprises prestress anchoring devices which are respectively arranged at the two end parts of the prestress connecting device and are respectively fixed at the top of the adjustable steel supporting device arranged below the loading device.
Optionally, the independent external prestress loading device applied to the metal beam is provided, wherein the prestress adjusting device includes a mounting seat mounted on the prestress connecting device and a loading rod mounted on the mounting seat in a threaded connection manner, and a top end of the loading rod abuts against a bottom of the metal beam.
Advantageous effects
According to the invention, the metal beam is arranged at the top of the prestress loading device, two ends of the bottom of the metal beam are respectively connected with two ends of the prestress connecting device, and the prestress adjusting device is arranged on the prestress connecting device, so that the distance between the prestress connecting device and the bottom of the metal beam can be adjusted. The invention applies prestress to the metal beam by adjusting the distance between the prestress connecting device and the bottom of the metal beam so as to improve the bearing capacity of the beam under the condition that the section of the beam is not changed. According to the invention, through the design of the external prestress loading device, the external prestress loading of the metal beam is realized, and under the same section level, the bearing capacity of the metal beam can be improved, and the span of the metal beam is increased.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of a metal beam and a prestressing force loading device thereof according to the present invention;
FIG. 2 is a schematic view of a free standing extracorporeal pre-stress loading device of the present invention applied to a metal beam;
fig. 3 is a schematic view of the prestress loading unit of fig. 2 from another perspective.
In the drawings, 1 denotes a metal beam; 21 denotes a prestress adjusting device; 22 denotes a prestressed anchoring device; 23 denotes a connection adjusting device; 24 denotes a prestressed manual loading device; 25 denotes a prestressed attachment; and 3, an adjustable steel support device.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The term "connected" as used herein may mean either a direct connection between the components or an indirect connection between the components via other components.
The meaning of "up and down" in the present invention means that the direction from the prestress loading device to the metal beam is up when the user faces the metal beam, and vice versa is down, not the specific limitation of the mechanism of the device of the present invention.
Referring to fig. 1, the present invention provides an external prestress loading device applicable to a metal beam 1, which includes an independent adjustable steel supporting device 3, an independent prestress loading device, a prestress anchoring device and a matching metal beam 1. The prestress loading device and the prestress anchoring device are used for applying prestress on the metal beam 1, so that the bearing capacity of the beam is improved under the condition that the cross section of the beam is not changed. This patent realizes the external prestressing force loading of metal roof beam 1 through external prestressing force loading device design, under the same cross-section level, improves metal roof beam 1's bearing capacity, increases metal roof beam 1 span.
In a specific implementation manner, the independent external prestress loading device applied to the metal beam comprises:
the metal beam 1 is arranged at the top of the prestress loading device;
the adjustable steel supporting device 3 can be arranged at the bottom of the metal beam 1, and the height of the prestressed metal beam 1 can be adjusted according to different project requirements by the adjustable steel supporting device 3;
a prestress connecting device 25, both ends of which are connected to the bottoms of both ends of the metal beam 1, respectively;
and a prestress adjusting device 21 installed on the prestress connecting device 25 and adjusting a distance between the prestress connecting device 25 and the bottom of the metal beam 1.
This prestressing force adjusting device 21 chooses for use prestressing steel cooperation prestressing force manual loading device 24, realizes the manual quick loading of prestressing force, can be fast, simple through the regulation to the distance between prestressing force connecting device 25 and the metal beam 1 bottom exert prestressing force to the metal component, and the size of exerting prestressing force can be adjusted according to project concrete requirement, can also dismantle at any time when the unnecessary prestressing force simultaneously.
Specifically, referring to the prestress loading device shown in fig. 2 and 3, in one implementation, the prestress connecting device 25 in the above structure includes a first segment connecting device, a second segment connecting device and a connection adjusting device 23, and one end of the first segment connecting device and one end of the second segment connecting device are respectively connected to the connection adjusting device 23. The other end of the first section of connecting device and the other end of the second section of connecting device are respectively connected to two ends of the metal beam 1. The connection adjustment means 23 can shorten or lengthen the distance between one end of the first length of connection means and one end of the second length of connection means to provide a prestress of the metal beam 1.
In an implementation manner, the connection adjusting device 23 may be connected to one end of the first section of connecting device and one end of the second section of connecting device by a thread manner, so as to adjust a distance between the one end of the first section of connecting device and the one end of the second section of connecting device.
The steel bar material used for the prestressed connecting device 25 can be selected as prestressed steel bars. The prestressed reinforcement has certain bearing capacity and rigidity, and the prestressed reinforcement is adopted to enable the prestressed loading device to have certain rigidity, so that the prestressed loading device is further convenient to mount and dismount.
Further, in an implementation manner, referring to fig. 2, the independent external prestress loading device applied to the metal beam may further include a prestress anchoring device 22. The prestressed anchorage devices 22 are respectively arranged at the end parts of the two ends of the prestressed connecting device 25 and are respectively fixed at the top of the adjustable steel supporting device arranged below the loading device. In this way, the top of the adjustable steel support 3 can thus be provided with the prestressed anchorage means 22 independently. The independently arranged prestressed anchoring device 22 component is connected with the metal beam 1 and the adjustable steel supporting device 3 through bolts, loading points can be arranged according to different specific requirements, and the prestress loading points are arranged at the weak stress position of the metal beam 1, so that more effective external prestress loading is realized.
The loading of the prestress can be achieved by a manual loading assembly. The method is characterized in that loading points are set according to different specific requirements, for example, as shown in fig. 2, the prestress loading points are correspondingly arranged at the weak stress positions of the metal beam 1, the metal beam is fixed through a prestress anchoring device 22, and the external prestress loading is realized through manually loading a bottom jacking device. The prestress adjusting device 21 used for manual loading may specifically include a mounting seat mounted on the prestress connecting device 25 and a loading rod mounted on the mounting seat in a threaded connection manner, a top end of the loading rod abuts against a bottom of the metal beam 1, and a prestress is provided by manually adjusting a distance between the prestress connecting device 25 and the bottom of the metal beam 1.
In the present invention, after the metal beam 1 is used, the turnaround can be performed as follows. In the turnover process, the prestress manual loading device 24 firstly releases prestress loading manually, and then sequentially detaches the prestress connecting device 25, the prestress anchoring device 22 and the adjustable steel supporting device 3 so as to turnover the prestress manual loading device to other positions for recycling.
Therefore, the external prestress loading device suitable for the metal beam is designed through the independent adjustable steel supporting device 3, the independent manual prestress loading device 24 and the prestress anchoring device 22, the external prestress loading device is miniaturized, can be detached at any time for turnover, can adjust the prestress loading size according to requirements, and can meet the use of turnover type supporting or temporary building reinforcement in the construction process.
The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.
Claims (8)
1. A free-standing external prestressing force loading device for metal beams is characterized by comprising:
the metal beam (1) is arranged at the top of the prestress loading device;
the two ends of the prestress connecting device (25) are respectively connected to the bottoms of the two ends of the metal beam (1);
and the prestress adjusting device (21) is arranged on the prestress connecting device (25) and is used for adjusting the distance between the prestress connecting device (25) and the bottom of the metal beam (1).
2. A freestanding extracorporeal prestress loading device applied to a metal beam as recited in claim 1, wherein the prestress connection device (25) comprises a first section connection device, a second section connection device and a connection adjustment device (23), and one end of the first section connection device and one end of the second section connection device are respectively connected to the connection adjustment device (23).
3. A freestanding external prestressing device for application to a metal beam according to claim 2, wherein the other ends of the first and second lengths of connecting means are connected to the ends of the metal beam (1), respectively.
4. A freestanding extracorporeal prestress loading device applied to a metal beam as recited in claim 2, wherein said connection adjustment means (23) is capable of shortening or lengthening the distance between one end of the first length of connection means and one end of the second length of connection means.
5. A freestanding extracorporeal prestress loading device applied to a metal beam as recited in claim 4, wherein said connection adjustment device (23) is threadedly connected to one end of the first section of connection device and one end of the second section of connection device, respectively.
6. A free-standing extracorporeal prestress loading device applied to a metal beam according to claim 1, wherein the prestress connecting means (25) is made of steel bar material.
7. A free-standing external prestressing force loading device for metal beams according to claim 6, further comprising prestressing anchorage means (22) respectively provided at both end ends of the prestressing connection means (25) and respectively fixed on top of the adjustable steel support means provided below the loading means.
8. A freestanding extracorporeal prestress loading device applied to a metal beam as recited in claim 1, wherein the prestress adjusting device (21) comprises a mounting seat mounted on the prestress connecting device (25) and a loading rod mounted on the mounting seat in a threaded manner, and the top end of the loading rod abuts against the bottom of the metal beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110169565.2A CN112878490A (en) | 2021-02-07 | 2021-02-07 | Independent external prestress loading device applied to metal beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110169565.2A CN112878490A (en) | 2021-02-07 | 2021-02-07 | Independent external prestress loading device applied to metal beam |
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| CN112878490A true CN112878490A (en) | 2021-06-01 |
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| CN202110169565.2A Pending CN112878490A (en) | 2021-02-07 | 2021-02-07 | Independent external prestress loading device applied to metal beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922098A (en) * | 2022-05-07 | 2022-08-19 | 山东交通学院 | Stone arch bridge reinforcing device and method |
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| KR101198960B1 (en) * | 2011-06-30 | 2012-11-07 | (주)신흥이앤지 | Bridge girde with the function of adjusting pre-stress |
| CN106869520A (en) * | 2017-04-12 | 2017-06-20 | 福州大学 | A kind of reinforced beam bracing means and its installation method |
| CN107178214A (en) * | 2017-05-16 | 2017-09-19 | 清华大学 | The Large Trussed Beam in Utility Boiler structure and its reinforcement means of a kind of external prestressing integral reinforcing |
| CN209779991U (en) * | 2019-02-27 | 2019-12-13 | 青岛杰地建筑设计有限公司 | Ring radial string structure top |
| CN210562978U (en) * | 2019-08-06 | 2020-05-19 | 内蒙古志信建筑工程有限公司 | External prestressing force structure of building roof beam |
| CN214738755U (en) * | 2021-02-07 | 2021-11-16 | 东南大学建筑设计研究院有限公司 | Independent external prestress loading device applied to metal beam |
-
2021
- 2021-02-07 CN CN202110169565.2A patent/CN112878490A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101198960B1 (en) * | 2011-06-30 | 2012-11-07 | (주)신흥이앤지 | Bridge girde with the function of adjusting pre-stress |
| CN106869520A (en) * | 2017-04-12 | 2017-06-20 | 福州大学 | A kind of reinforced beam bracing means and its installation method |
| CN107178214A (en) * | 2017-05-16 | 2017-09-19 | 清华大学 | The Large Trussed Beam in Utility Boiler structure and its reinforcement means of a kind of external prestressing integral reinforcing |
| CN209779991U (en) * | 2019-02-27 | 2019-12-13 | 青岛杰地建筑设计有限公司 | Ring radial string structure top |
| CN210562978U (en) * | 2019-08-06 | 2020-05-19 | 内蒙古志信建筑工程有限公司 | External prestressing force structure of building roof beam |
| CN214738755U (en) * | 2021-02-07 | 2021-11-16 | 东南大学建筑设计研究院有限公司 | Independent external prestress loading device applied to metal beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922098A (en) * | 2022-05-07 | 2022-08-19 | 山东交通学院 | Stone arch bridge reinforcing device and method |
| CN114922098B (en) * | 2022-05-07 | 2023-08-22 | 山东交通学院 | Stone arch bridge reinforcing device and method |
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