CN110805205A - Concrete structure plasticity hinge area is indulged muscle buckling restrained device - Google Patents
Concrete structure plasticity hinge area is indulged muscle buckling restrained device Download PDFInfo
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- CN110805205A CN110805205A CN201910979336.XA CN201910979336A CN110805205A CN 110805205 A CN110805205 A CN 110805205A CN 201910979336 A CN201910979336 A CN 201910979336A CN 110805205 A CN110805205 A CN 110805205A
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- tensioning
- concrete structure
- buckling restrained
- hinge area
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention relates to the technical field of constructional engineering, and discloses a concrete structure plastic hinge area longitudinal bar buckling prevention device, which comprises a plurality of longitudinal bars and is characterized in that: each longitudinal rib is provided with a U-shaped rib, the longitudinal ribs and the U-shaped ribs form inscribed butt, a tensioning mechanism is connected between every two adjacent U-shaped ribs, each longitudinal rib is provided with a jacking mechanism in a butt mode, and a steel wire rope is connected between the jacking mechanism and the tensioning mechanism. According to the invention, the U-shaped ribs are in a tensioned state by utilizing the tensioning mechanism to form primary tensioning, and the U-shaped ribs can provide a force for resisting the longitudinal ribs, so that the effect of preventing the longitudinal ribs from buckling is achieved preliminarily; then, the longitudinal ribs are supported through a jacking mechanism, so that buckling is further prevented; because the steel wire rope is connected between the jacking mechanism and the tensioning mechanism, secondary tensioning is formed through the steel wire rope, and the effect of preventing buckling of the longitudinal ribs in the region is achieved, so that the ductility of the structure is improved, and the anti-seismic performance of the structure is enhanced.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a concrete structure plastic hinge area longitudinal bar buckling prevention device.
Background
Currently, the field of structural seismic resistance mainly adopts the theory of ductile seismic design, which allows the formation of plastic hinges capable of dissipating seismic energy in specific areas when the structure is subjected to intense seismic action. According to a plurality of concrete structure earthquake damage phenomena and indoor experimental researches, the longitudinal steel bars in the plastic hinge area are easy to generate buckling instability, so that the structure is damaged early.
In order to solve the above problems, chinese patent (CN105587075A) discloses a buckling restrained structure of longitudinal steel bars in plastic hinge region of reinforced concrete member, which comprises common longitudinal steel bars, a restrained sleeve, a sealant, a fixing screw, a ring-shaped foam material, a gap and a fixed lantern ring. The common longitudinal steel bars are the longitudinal steel bars which play a main bearing or force transmission role in the reinforced concrete member. The restraint sleeve is a metal sleeve or a fiber reinforced composite material sleeve with the inner diameter larger than the outer diameter of the common longitudinal steel bar, and a gap is reserved between the inner wall of the restraint sleeve and the outer wall of the common longitudinal steel bar. This patent is through installing the sleeve pipe on the reinforcing bar and retraining the muscle of indulging, can improve concrete structure's ductility ability, prevents the too early bucking of the vertical reinforcing bar in plastics hinge district, nevertheless installs the sleeve pipe construction on every indulging the muscle comparatively difficult.
Disclosure of Invention
The invention aims to provide a concrete structure plastic hinge area longitudinal bar buckling-restrained device, which solves the problems in the background technology.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
concrete structure plasticity hinge district is indulged muscle buckling restrained device, including a plurality of muscle of indulging, every is indulged and is equipped with the U-shaped muscle on the muscle, indulges the muscle and forms the inscribe butt with the U-shaped muscle, is connected with straining device between the adjacent U-shaped muscle, and every is indulged muscle department homogeneous phase and is supported and be provided with roof pressure mechanism, is connected with wire rope between roof pressure mechanism and the straining device.
Compared with the prior art, the invention has the following principle and beneficial effects: the U-shaped ribs are in a tightened state by utilizing the tightening mechanism to form first tightening, the U-shaped ribs are used for resisting against the longitudinal ribs, and the effect of preventing the longitudinal ribs from buckling is achieved preliminarily; then, the longitudinal ribs are supported through a jacking mechanism, so that buckling is further prevented; because the steel wire rope is connected between the jacking mechanism and the tensioning mechanism, secondary tensioning is formed through the steel wire rope, and the effect of preventing buckling of the longitudinal ribs in the region is achieved, so that the ductility of the structure is improved, and the anti-seismic performance of the structure is enhanced.
Furthermore, the tensioning mechanism comprises a tensioning plate, and a tensioning column for fixing the U-shaped rib is arranged on the tensioning plate. Fix the U-shaped muscle on taut post, tighten the U-shaped muscle through taut board, make the U-shaped muscle give and indulge muscle counterbalance force to reach the effect that prevents to indulge the muscle bucking.
Furthermore, a supporting strip is fixedly connected between the two adjacent tensioning plates. The supporting bars are utilized to support the tensioning plates, so that the stability of the tensioning plates is improved, and the anti-seismic performance of the device is indirectly improved.
Furthermore, a sliding groove for sliding the tensioning column is formed in the tensioning plate, and a positioning block for limiting is arranged on the tensioning column. The U-shaped ribs can be better tightened by the tensioning columns through sliding the tensioning columns in the sliding grooves and adjusting the positions of the tensioning columns, so that the buckling-preventing effect is achieved; after the position of the tensioning column is adjusted, the tensioning column is fixed by the positioning block, and the influence on stability caused by displacement in the sliding groove is avoided.
Furthermore, the positioning block is connected with the tensioning column through threads. This connected mode stability is good, and the dismouting of being convenient for.
Furthermore, the jacking mechanism comprises a jacking plate, and the jacking plate is connected with the two adjacent tensioning plates through a steel wire rope. The top pressing plate supports the longitudinal ribs to prevent the longitudinal ribs from buckling.
Further, still include the restraint sleeve, indulge the muscle and distribute in the restraint sleeve and with restraint sleeve inscribe, restraint sleeve outer wall and roof pressure board butt. Compare with installing the restraint sleeve pipe on every muscle of indulging among the prior art, utilize the restraint sleeve to overlap all muscle of indulging, its operation is more simple and convenient, and will indulge the muscle hoop through the restraint sleeve, can reach the effect of preliminary buckling-restrained, borrow the roof pressure board again to indulge the muscle and support, strengthen the effect of buckling-restrained.
Furthermore, the face of the top pressure plate, which is abutted against the restraint sleeve, is arc-shaped, and the radius of the arc is equal to that of the restraint sleeve. Make roof pressure board and restraint sleeve can cooperate better, improve the effect that prevents to indulge the muscle and take place the bucking.
Further, the center of the top pressure plate is aligned with the longitudinal rib. When supporting, the top pressure plate can be stressed evenly, so that the top pressure plate can be more stable in the supporting process.
Further, the thickness of the top pressing plate is gradually reduced from the center to two ends. The center of the top pressure plate is used as a main support, the thicknesses of two ends are reduced, the material consumption can be saved, and meanwhile, the space can be saved.
Drawings
Fig. 1 is a schematic top view of a first embodiment of the present invention;
FIG. 2 is a schematic top view of a second embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the steel wire rope tensioning device comprises longitudinal ribs 1, a restraining sleeve 2, U-shaped ribs 3, tensioning plates 4, tensioning columns 5, a jacking plate 6, a steel wire rope 7, supporting strips 8, sliding grooves 9 and positioning blocks 10.
An embodiment substantially as shown in figure 1:
concrete structure plasticity hinge district is indulged muscle buckling restrained device, includes a plurality of muscle 1 and restraint sleeve 2 of indulging, and in this embodiment, indulges the quantity of muscle 1 and be twelve, indulges muscle 1 and evenly distributes in restraint sleeve 2 and with 2 inscribes of restraint sleeve. Every is indulged and is provided with U-shaped muscle 3 on the muscle 1, indulges muscle 1 and forms interior butt with U-shaped muscle 3.
Be connected with straining device between two adjacent U-shaped muscle 3, straining device is including being curved take- up plate 4, and 4 both ends integrated into one piece of take-up plate have the taut post 5 that is used for fixed U-shaped muscle 3. Every 1 department of indulging the muscle all is provided with roof pressure mechanism, and roof pressure mechanism includes roof pressure plate 6, and the center alignment of roof pressure plate 6 indulges muscle 1, and the thickness of roof pressure plate 6 reduces from middle part to both ends gradually, and 2 outer walls of restraint sleeve and 6 butts of roof pressure plate, the roof pressure plate 6 is the arc with the one side of 2 butts of restraint sleeve, and curved radius equals with restraint sleeve 2. And a steel wire rope 7 is fixedly connected between the top pressure plate 6 and the two adjacent tensioning plates 4.
During the concrete implementation, will indulge the one end of muscle 1 and fix on the workplace, then will restrain sleeve 2 and cup joint outside indulging muscle 1, make and indulge muscle 1 and restraint sleeve 2 and form interior contact butt. The U-shaped rib 3 is sleeved on the longitudinal rib 1, and two free ends of the U-shaped rib 3 are fixed on the tensioning column 5 of the tensioning plate 4, so that the U-shaped rib 3 is tensioned. And then, installing a top pressure plate 6 at the position of the longitudinal rib 1 corresponding to the outer wall of the constraint sleeve 2, and during installation, aligning the center of the top pressure plate 6 with the longitudinal rib 1 and enabling the top pressure plate 6 to be tightly abutted against the outer wall of the constraint sleeve 2. And then the steel wire rope 7 is fixedly connected to the two adjacent tensioning plates 4 and the top pressure plate 6. And after the installation is finished, the concrete can be installed, constructed and poured.
When taking precautions against earthquakes, utilize straining device to make U-shaped muscle 3 be the state of tightening, form for the first time taut, U-shaped muscle 3 will be given and indulge muscle 1 counterbalance force, has tentatively reached the effect that prevents to indulge muscle 1 bucking. Then, the longitudinal ribs 1 are supported through a jacking mechanism, so that buckling is further prevented; because the steel wire rope 7 is connected between the jacking mechanism and the tensioning mechanism, secondary tensioning is formed through the steel wire rope 7, and the effect of preventing buckling of the longitudinal ribs 1 in the region is achieved, so that the ductility of the structure is improved, and the anti-seismic performance of the structure is enhanced.
The second embodiment is basically as shown in the attached figures 2 and 3:
the difference between this embodiment and the first embodiment is: fixedly connected with support bar 8 between two adjacent straining plates 4, welding, screw connection etc. can be chooseed for use to fixed connection's mode. The tensioning plate 4 is provided with a sliding chute 9 for the tensioning column 5 to slide, and the tensioning column 5 is connected with a positioning block 10 for limiting through threads.
The supporting bars 8 are used for supporting the tensioning plates 4, so that the stability of the tensioning plates 4 is improved, and the anti-seismic performance of the device is indirectly improved. During the installation, slide in spout 9 through taut post 5, adjust the position of taut post 5, make taut post 5 can tighten U-shaped muscle 3 better to reach the effect of buckling restrained. After the position of tensioning post 5 has been adjusted, utilize locating piece 10 to fix tensioning post 5, the specific operation is: the positioning block 10 is rotated to approach the tension plate 4 and finally abut against the tension plate 4, so that the tension column 5 is locked at a specific position, and the situation that the tension column 5 displaces in the sliding groove 9 to influence the stability of the whole device is avoided.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that variations and modifications can be made by those skilled in the art without departing from the structure of the present invention. These should also be construed as the scope of the present invention, and they should not be construed as affecting the effectiveness of the practice of the present invention or the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. Concrete structure plasticity hinge district is indulged muscle buckling restrained device, including a plurality of muscle of indulging, its characterized in that: each longitudinal rib is provided with a U-shaped rib, the longitudinal ribs and the U-shaped ribs form inscribed butt, a tensioning mechanism is connected between every two adjacent U-shaped ribs, each longitudinal rib is provided with a jacking mechanism in a butt mode, and a steel wire rope is connected between the jacking mechanism and the tensioning mechanism.
2. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 1, characterized in that: the tensioning mechanism comprises a tensioning plate, and a tensioning column for fixing the U-shaped rib is arranged on the tensioning plate.
3. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 2, characterized in that: and a supporting strip is fixedly connected between every two adjacent tensioning plates.
4. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 2 or 3, characterized in that: the tensioning plate is provided with a sliding groove for sliding the tensioning column, and the tensioning column is provided with a positioning block for limiting.
5. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 4, characterized in that: the positioning block is connected with the tensioning column through threads.
6. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 5, characterized in that: the jacking mechanism comprises a jacking plate, and the jacking plate is connected with the two adjacent tensioning plates through a steel wire rope.
7. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 6, characterized in that: the vertical ribs are distributed in the constraint sleeve and internally tangent to the constraint sleeve, and the outer wall of the constraint sleeve is abutted to the top pressure plate.
8. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 7, characterized in that: the top pressure plate is arc-shaped on one surface abutted to the restraint sleeve, and the radius of the arc is equal to that of the restraint sleeve.
9. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 8, characterized in that: the center of the top pressure plate is aligned with the longitudinal rib.
10. The concrete structure plastic hinge area longitudinal bar buckling restrained device according to claim 9, characterized in that: the thickness of the top pressing plate is gradually reduced from the center to two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979336.XA CN110805205B (en) | 2019-10-15 | 2019-10-15 | Concrete structure plasticity hinge area is indulged muscle buckling restrained device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979336.XA CN110805205B (en) | 2019-10-15 | 2019-10-15 | Concrete structure plasticity hinge area is indulged muscle buckling restrained device |
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| CN110805205A true CN110805205A (en) | 2020-02-18 |
| CN110805205B CN110805205B (en) | 2021-07-06 |
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| CN201910979336.XA Active CN110805205B (en) | 2019-10-15 | 2019-10-15 | Concrete structure plasticity hinge area is indulged muscle buckling restrained device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960948A (en) * | 2022-06-29 | 2022-08-30 | 西安建筑科技大学 | Steel bar constraint circular steel tube component with slidable end sleeve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203066356U (en) * | 2013-03-07 | 2013-07-17 | 重庆大学 | Reinforced concrete column with local buckling constraint of longitudinal bars |
| CN105587075A (en) * | 2016-02-29 | 2016-05-18 | 北京工业大学 | Buckling constraint structure for longitudinal steel bar in plastic-hinge region of reinforced concrete member |
| CN105781115A (en) * | 2014-03-24 | 2016-07-20 | Gl技术株式会社 | Fixing structure of internal tie bars for reinforced concrete component |
| KR20180033751A (en) * | 2016-09-26 | 2018-04-04 | 지엘기술주식회사 | Structure for reinforcing column using V-shaped ties and construction method thereof |
| KR102004419B1 (en) * | 2017-11-08 | 2019-07-26 | 포엠 주식회사 | Structure for reinforcing column using V-shaped ties |
-
2019
- 2019-10-15 CN CN201910979336.XA patent/CN110805205B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203066356U (en) * | 2013-03-07 | 2013-07-17 | 重庆大学 | Reinforced concrete column with local buckling constraint of longitudinal bars |
| CN105781115A (en) * | 2014-03-24 | 2016-07-20 | Gl技术株式会社 | Fixing structure of internal tie bars for reinforced concrete component |
| CN105587075A (en) * | 2016-02-29 | 2016-05-18 | 北京工业大学 | Buckling constraint structure for longitudinal steel bar in plastic-hinge region of reinforced concrete member |
| KR20180033751A (en) * | 2016-09-26 | 2018-04-04 | 지엘기술주식회사 | Structure for reinforcing column using V-shaped ties and construction method thereof |
| KR102004419B1 (en) * | 2017-11-08 | 2019-07-26 | 포엠 주식회사 | Structure for reinforcing column using V-shaped ties |
Non-Patent Citations (1)
| Title |
|---|
| 薛伟辰等: "六层两跨现浇柱预制梁框架抗震性能试验研究 ", 《建筑结构学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960948A (en) * | 2022-06-29 | 2022-08-30 | 西安建筑科技大学 | Steel bar constraint circular steel tube component with slidable end sleeve |
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| CN110805205B (en) | 2021-07-06 |
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