CN210712560U - Anchoring component for transversely bonding prestressed steel bars of bridge tower - Google Patents
Anchoring component for transversely bonding prestressed steel bars of bridge tower Download PDFInfo
- Publication number
- CN210712560U CN210712560U CN201921061693.XU CN201921061693U CN210712560U CN 210712560 U CN210712560 U CN 210712560U CN 201921061693 U CN201921061693 U CN 201921061693U CN 210712560 U CN210712560 U CN 210712560U
- Authority
- CN
- China
- Prior art keywords
- steel
- anchor
- backing plate
- steel bar
- anchor backing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a be used for bridge tower transversely to have bonding prestressed steel bar anchor subassembly, the structure is: the grouting holes in the anchor backing plate are communicated with the holes in the steel plate, the two positioning steel tubes are welded on the anchor backing plate, a spiral rib penetrates through each positioning steel tube, each spiral rib is fixed on the anchor backing plate through a screw, the bottom of the anchor backing plate is welded with the steel plate in a fitting manner, and the steel plate and the sealing cover are welded at the top of the square steel tube to form an anchor box. In the construction of the bridge tower, the anchoring assembly is pre-installed, the prestressed steel bar is accurately positioned, and the standard fine thread screwing locking anchoring is adopted, so that the anchoring performance of the bonded prestressed steel bar is greatly improved; the front end extension rod is tensioned, the high-strength rubber hose is connected in series for once grouting, the prestress construction process is simplified, and the construction flow period is effectively shortened. The utility model provides an anchor subassembly has convenient operation, construction precision height, and stretch-draw stress and extension uniformity advantage such as strong adopt the processing of high strength nut regularization, disposable accurate stretch-draw, double-deck guarantee.
Description
The technical field is as follows:
the utility model belongs to the bridge engineering field mainly relates to one kind and is used for the bridge tower transversely to have bonding prestressing steel bar anchor subassembly, is applicable to the horizontal prestressing force construction of bridge engineering cable tower.
Background art:
there are two main types of conventional prestressed products commonly used in bridge construction: steel strand clip anchors (long distance) and finish rolled deformed steel anchors (medium and short distance). The steel strand clamping piece anchor material has large retraction amount and large construction stress loss, and meanwhile, the cold-processed steel has low elongation rate and poor shock resistance and energy absorption; and the material relaxation rate of the finish-rolled deformed steel bar anchor is higher, so that larger prestress loss is easily caused. The steel bar has low strength, and steel can be wasted only by increasing the diameter of the steel bar to meet the bearing capacity requirement. The traditional finish rolling deformed steel bar anchor and the steel strand clamping piece anchor both have large construction stress loss, and the durability and the reliability of the bridge are influenced by the rigidity and the stability of the transverse connection of the traditional finish rolling deformed steel bar anchor and the steel strand clamping piece anchor.
The invention content is as follows:
the utility model discloses an overcome the problem and the shortcoming that above-mentioned prior art exists, provide one kind and be used for the bridge tower transversely to have bonding prestressing steel bar anchor subassembly, in the bridge tower construction, this anchor subassembly of pre-installation, accurate location prestressing steel bar, the utility model provides an anchor subassembly have convenient operation, construction accuracy height, and stretching stress and extension volume uniformity advantage such as strong adopts high strength nut regularization processing, and the accurate stretch-draw of disposable is double-deck guarantee, and it is great effectively to have solved the traditional clamping piece anchor volume of returning, and loss of stress is big, the loaded down with trivial details scheduling problem of stretch-draw construction. The standard fine thread is screwed, locked and anchored, so that the anchoring performance of the bonded prestressed steel bar is greatly improved; the front end extension rod is tensioned, the high-strength rubber hose is connected in series for once grouting, the prestress construction process is simplified, and the construction flow period is effectively shortened.
The utility model discloses the technical scheme who realizes is:
be used for bridge tower transversely to have bonding prestressed steel bar anchor subassembly, including two location steel pipes, two spiral muscle, anchor backing plate, square steel pipe, steel sheet, its characterized in that: the anchor backing plate is provided with two positioning holes and a grouting hole, the steel plate is provided with holes and communicated with the grouting hole, two positioning steel tubes are correspondingly welded on the two positioning holes of the anchor backing plate, a spiral rib penetrates through each positioning steel tube, each spiral rib is fixed on the anchor backing plate through a screw, each spiral rib is connected with the anchor backing plate through the positioning steel tube, the bottom of the anchor backing plate is welded with the steel plate in a laminating manner, and the steel plate and the sealing cover are welded on the top of the square steel tube to form an anchor box.
The positioning steel pipe is a round steel pipe with the diameter of 60mm and the thickness of 5 mm.
And the positioning steel pipe is fully welded with the top of the anchor backing plate.
The spiral rib is round steel with the diameter of 8 mm.
The anchor backing plate is matched with the binding prestressed steel bar.
The section parameters of the square steel pipe are 250 multiplied by 150 multiplied by 12mm, and the length is 150 mm.
The steel plate is 250 multiplied by 150mm, and the thickness is 12 mm.
The edges of the steel plates are connected with the square steel pipes by full welding.
The construction method for the bridge tower transversely provided with the bonded prestressed steel bar anchoring component is characterized by comprising the following steps of: the square steel pipe of each steel bar anchoring assembly is welded and fixed with the positioning ribs in the binding process of the tower column reinforcing steel bars, and then the metal corrugated pipes and the prestressed steel bars are installed; after the concrete is poured and matched, the tower column concrete is tensioned by a penetrating jack through a stretching rod after meeting the requirement; connecting all the steel bar anchoring components in series by using a high-strength rubber pipe, sucking slurry in vacuum for grouting, and finally sealing the anchor to finish transverse prestress construction; the method comprises the following specific steps:
(1) the steel bar anchoring assembly and the prestress positioning installation: the square steel pipe of each steel bar anchoring assembly is welded and fixed with the positioning ribs in the binding process of the tower column steel bars, two ends of the metal corrugated pipe are connected and sealed with the positioning steel pipes on two sides, then the binding prestressed steel bars and the gaskets are arranged on the anchor backing plate matched with the binding prestressed steel bars, and the anchoring nuts are screwed down;
(2) tensioning the prestressed steel bar: after the strength of the concrete reaches the design requirement, tensioning is started, a tensioning end is connected with a screw mouth of the end head of the prestressed steel bar through a stretching rod, a feed-through jack is installed, and an anchoring nut is locked; tensioning in a single-branch single-section tensioning mode;
(3) connecting prestressed pipelines: after tensioning is finished, connecting high-strength rubber pipes in series with a longitudinal single-row anchor backing plate to ensure the tightness of a grouting hole;
(4) vacuum grouting: connecting a vacuumizing tube with a grouting hole of an anchor backing plate at the top of the prestressed steel bar at the topmost layer of the tower column, and vacuumizing by using a vacuum pump; grouting holes of anchor bearing plates at the bottoms of the prestressed steel bars at the bottommost layers of the tower columns are connected with grouting pipes, and grouting is performed at the bottoms by adopting a grouting pump; when the slurry is discharged smoothly and stably and has consistent consistency, the grouting can be finished.
The utility model provides an anchor subassembly has convenient operation, construction precision height, and stretch-draw stress and extension uniformity advantage such as strong adopt the high strength nut regularization processing, have effectively solved that traditional clamping piece anchor returns volume of contracting great, loss of stress is big, the loaded down with trivial details scheduling problem of stretch-draw construction.
Description of the drawings:
FIG. 1 is a front view of the present apparatus;
FIG. 2 is a top view of the apparatus;
FIG. 3 is a schematic view of the apparatus in connection with a prestressed steel bar;
FIG. 4 is a schematic drawing of the tension construction of the device;
FIG. 5 is a schematic view of the grouting construction of the device.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1 and 2, the device of the present invention comprises two positioning steel pipes 1, two spiral ribs 3, an anchor backing plate 4, a square steel pipe 5, and a steel plate 6, and is characterized in that: two positioning holes and a grouting hole 7 are formed in the anchor backing plate 4, holes are formed in the steel plate 6 and communicated with the grouting hole 7, two positioning steel tubes 1 are correspondingly welded on the two positioning holes of the anchor backing plate 4, a spiral rib 3 penetrates through each positioning steel tube 1, each spiral rib 3 is fixed on the anchor backing plate 4 through an M6 screw 2, each spiral rib 3 is connected with the anchor backing plate 4 through the positioning steel tube 1, the bottom of the anchor backing plate 4 is welded with the steel plate 6 in an attaching mode, and the steel plate 6 is welded on the top of the square steel tube 5 in a sealing mode to form an anchor box; the positioning steel pipe 1 is a round steel pipe with the diameter of 60mm and the thickness of 5 mm. The positioning steel pipe 1 is fully welded with the top of the anchor backing plate 4, and a spiral rib 3 is penetrated in the positioning steel pipe. The spiral rib 3 is a round steel with the diameter of 8mm, and is fixed with the anchor backing plate 4 by an M6 screw 2. The anchor backing plate 4 is an anchor backing plate matched with a bonding prestressed steel bar. The section parameters of the square steel pipe 5 are 250 multiplied by 150 multiplied by 12mm, and the length is 150 mm. The steel plate 6 is 250 mm multiplied by 150mm and 12mm thick. The edge of the steel plate 6 is connected with the square steel pipe 5 by full welding.
As shown in fig. 3, 4 and 5, a construction method of a transverse bonded prestressed steel bar anchoring assembly for a bridge tower is characterized by comprising the following steps: the square steel pipe 5 of each steel bar anchoring assembly is welded and fixed with the positioning bars in the binding process of the tower column reinforcing steel bars, and then the metal corrugated pipes and the prestressed steel bars are installed; after the concrete is poured and matched, the tower column concrete reaches the design requirement and is tensioned by a penetrating jack through a stretching rod; connecting all the steel bar anchoring components in series by using a high-strength rubber pipe, sucking slurry in vacuum for grouting, and finally sealing the anchor to finish transverse prestress construction; the method comprises the following specific steps:
(1) the steel bar anchoring assembly and the prestress positioning installation: as shown in fig. 3, the square steel tube 5 of the steel bar anchoring assembly is welded and fixed with the positioning bars in the binding process of the tower column steel bars, two ends of the metal corrugated tube 8 are connected and sealed with the positioning steel tubes 1 at two sides, then the anchoring base plate matched with the binding prestressed steel bars is provided with the binding prestressed steel bars 9 and the gaskets 10, and the anchoring nuts 11 are screwed down;
(2) tensioning the prestressed steel bar: as shown in fig. 4, after the concrete strength reaches the design requirement, tensioning is started, the tensioning end is connected with a screw hole at the end of a prestressed steel bar 9 through a stretching rod 12, a feed-through jack 13 is installed, and an anchoring nut 11 is locked; tensioning in a single-branch single-section tensioning mode;
(3) connecting prestressed pipelines: as shown in fig. 5, after tensioning is finished, a high-strength rubber tube 14 is used for connecting the longitudinal single-row anchor backing plate 4 in series, so that the sealing property of a grouting hole is ensured;
(4) vacuum grouting: as shown in fig. 5, an evacuation tube 20 is used to connect with the top anchor pad grouting hole 7 of the topmost prestressed steel bar 9 of the tower column 19, and a vacuum pump 18 is used to evacuate slurry; a grouting pipe 15 is connected with a grouting hole 7 of an anchor backing plate at the bottom of the bottom prestressed steel bar 9 of the tower column 19, and a grouting pump 15 is adopted to carry out grouting at the bottom; when the slurry is discharged smoothly and stably and has consistent consistency, the grouting can be finished.
The utility model discloses an overcome above-mentioned problem and the shortcoming that current traditional prestressing force technique exists, adopt the processing of high strength nut regularization, disposable accurate stretch-draw takes connecting plate welding and the artifical locking mode of prestressing steel bar anchor nut simultaneously, double-deck guarantee, increase factor of safety. The clamping piece anchor has the advantages of being convenient to operate, high in construction precision, strong in consistency of stretching stress and elongation and the like, effectively solves the problems that a traditional clamping piece anchor is large in retraction amount, large in stress loss, complex in stretching construction and the like, and greatly prolongs the service life of a bridge structure.
Claims (8)
1. Be used for bridge tower transversely to have bonding prestressed steel bar anchor subassembly, including two location steel pipes, two spiral muscle, anchor backing plate, square steel pipe, steel sheet, its characterized in that: the anchor backing plate is provided with two positioning holes and a grouting hole, the steel plate is provided with holes and communicated with the grouting hole, two positioning steel tubes are correspondingly welded on the two positioning holes of the anchor backing plate, a spiral rib penetrates through each positioning steel tube, each spiral rib is fixed on the anchor backing plate through a screw, each spiral rib is connected with the anchor backing plate through the positioning steel tube, the bottom of the anchor backing plate is welded with the steel plate in a laminating manner, and the steel plate and the sealing cover are welded on the top of the square steel tube to form an anchor box.
2. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the positioning steel pipe is a round steel pipe with the diameter of 60mm and the thickness of 5 mm.
3. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: and the positioning steel pipe is fully welded with the top of the anchor backing plate.
4. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the spiral rib is round steel with the diameter of 8 mm.
5. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the anchor backing plate is matched with the binding prestressed steel bar.
6. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the section parameters of the square steel pipe are 250 multiplied by 150 multiplied by 12mm, and the length is 150 mm.
7. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the steel plate is 250 multiplied by 150mm, and the thickness is 12 mm.
8. The transverse cementitious prestressed steel bar anchoring assembly for pylons as recited in claim 1, wherein: the edges of the steel plates are connected with the square steel pipes by full welding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061693.XU CN210712560U (en) | 2019-07-08 | 2019-07-08 | Anchoring component for transversely bonding prestressed steel bars of bridge tower |
| PCT/CN2020/100314 WO2021004417A1 (en) | 2019-07-08 | 2020-07-05 | Anchoring assembly for transversely bonded prestressed steel rod for bridge tower and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061693.XU CN210712560U (en) | 2019-07-08 | 2019-07-08 | Anchoring component for transversely bonding prestressed steel bars of bridge tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210712560U true CN210712560U (en) | 2020-06-09 |
Family
ID=70933316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921061693.XU Active CN210712560U (en) | 2019-07-08 | 2019-07-08 | Anchoring component for transversely bonding prestressed steel bars of bridge tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210712560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396927A (en) * | 2019-07-08 | 2019-11-01 | 中建三局第二建设工程有限责任公司 | For bridge tower transverse direction bonded prestress rod iron anchoring assembly and construction method |
| WO2021004417A1 (en) * | 2019-07-08 | 2021-01-14 | 中建三局第二建设工程有限责任公司 | Anchoring assembly for transversely bonded prestressed steel rod for bridge tower and construction method |
-
2019
- 2019-07-08 CN CN201921061693.XU patent/CN210712560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396927A (en) * | 2019-07-08 | 2019-11-01 | 中建三局第二建设工程有限责任公司 | For bridge tower transverse direction bonded prestress rod iron anchoring assembly and construction method |
| WO2021004417A1 (en) * | 2019-07-08 | 2021-01-14 | 中建三局第二建设工程有限责任公司 | Anchoring assembly for transversely bonded prestressed steel rod for bridge tower and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021004417A1 (en) | Anchoring assembly for transversely bonded prestressed steel rod for bridge tower and construction method | |
| CN210712560U (en) | Anchoring component for transversely bonding prestressed steel bars of bridge tower | |
| CN204546759U (en) | Prestressed concrete mortar leakage prevention device | |
| CN201661009U (en) | Concrete-filled square steel tubular column | |
| CN107817162B (en) | Rapid drawing test method for nonmetal anti-floating anchor rod with enlarged head | |
| WO2019149271A1 (en) | Assembled concrete pier system having mixed configuration of frp ribs and regular steel ribs | |
| CN107621412B (en) | Quick drawing test device for nonmetal anti-floating anchor rod with enlarged head | |
| CN2739290Y (en) | Steel strand vertical prestress anchoring system | |
| CN202809633U (en) | Connecting structure of pre-stressed high-strength concrete (PHC) pipe pile and bearing platform | |
| CN107905103A (en) | A kind of prestress anchorage system and its construction method with compression spring | |
| CN109838038B (en) | Prestressed composite bar composite anchorage and forming method thereof | |
| CN102912987B (en) | Stress applying method and tool thereof for low retraction pre-stress concrete member | |
| CN207525618U (en) | A kind of prestress anchorage system with compression spring | |
| CN105735666A (en) | Method for reinforcing concrete column rapidly | |
| CN102251533A (en) | Spiral ribbed steel pipe concrete pre-pressed composite oblique pile foundation and construction method | |
| CN111350271B (en) | Concrete slab steel-concrete connection interface anti-cracking structure and preparation method thereof | |
| CN212153110U (en) | Vertical stretch-draw construction structure | |
| CN110396927A (en) | For bridge tower transverse direction bonded prestress rod iron anchoring assembly and construction method | |
| CN111945721A (en) | Prestress tension-compression composite anti-floating anchor rod and construction method thereof | |
| CN107794914B (en) | Prestressed concrete pipe pile combining post-grouting and diameter-expanding technology and manufacturing method thereof | |
| CN105672688A (en) | Splicing wood structure pre-stress reinforcing device and construction method thereof | |
| CN106930437B (en) | Reinforced concrete shear wall with built-in horizontal diagonal braces | |
| CN111021255A (en) | Continuous steel box girder pier and girder consolidation vertical prestress construction method | |
| CN220013432U (en) | Steel structure anchoring block for external prestress reinforcement | |
| CN220249303U (en) | Nonmetal pipeline plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |