CN202989786U - Old bridge external prestressing reinforced structure - Google Patents
Old bridge external prestressing reinforced structure Download PDFInfo
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- CN202989786U CN202989786U CN 201220658271 CN201220658271U CN202989786U CN 202989786 U CN202989786 U CN 202989786U CN 201220658271 CN201220658271 CN 201220658271 CN 201220658271 U CN201220658271 U CN 201220658271U CN 202989786 U CN202989786 U CN 202989786U
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- prestressed
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Abstract
The utility model relates to an old bridge external prestressing reinforced structure. Problems that in the prior art anchor bearing plate force transmission way is undefined, is difficult to manufacture and install are solved. The old bridge external prestressing reinforced structure comprises an anchor bearing plate, a prestressing wire rope, a support slide block, a shock reduction device and a prestressed anchorage device. The prestressed anchorage device, the anchor bearing plate and the support slide block are mutually fixed. The anchor bearing plate comprises a fixing connecting plate, a mounting plate which is arranged at one end of the fixing connecting plate, a cylindrical first pressure-bearing steel tube which is arranged on the fixing connecting plate and is connected with the mounting plate, a rib plate which is arranged between the fixing connecting plate and the first pressure-bearing steel tube, a bolt hole which is formed on the connecting plate. The prestressing wire rope penetrates through the first pressure-bearing steel tube and is fixed on the support plate through an extrusion sleeve anchor. The old bridge external prestressing reinforced structure has the advantages of being reasonable in design, simple in structure and convenient to carry out construction. The stability of the bridge is greatly improved; the security is high after the reinforced structure is installed on the bridge. And the old bridge external prestressing reinforced structure is suitable for popularizing.
Description
Technical field
The utility model belongs to bridge and the Structural Engineering field of building subject, is specifically related to a kind of old pontic External prestressed ruggedized construction.
Background technology
At present, for reinforced concrete beam bridge beam superstructure, because of design, constructional deficiency, overload, material degradation, temperature, stress, corrosion all can bring damage to bridge, cause Lack of support.Anchor measure (anchor plate, support slipper) is set up prestressed draw-bar and original structure forms combining structure by arranging outside the bridge superstructure structure, collaborative work under the outer load effect, load redistributes between original structure and prestressed draw-bar, makes prestressed draw-bar bear part stress.Thereby reduce former stress beam level, improved structural-load-carrying capacity.Therefore the external prestressing strengthening technology is one of the most effective means of bridge strengthening maintenance.Just be widely used at present bridge strengthening.
But the prior art major defect is on anchor plate and support slipper.Anchor plate: force path is indefinite, makes, installs more difficult.Support slipper: force structure is unreasonable.
The utility model content
The purpose of this utility model is to provide a kind of old pontic External prestressed ruggedized construction, and in the solution prior art, the anchor plate force path is indefinite, makes, installs relatively hard problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Old pontic External prestressed ruggedized construction, comprise the anchor plate, prestressed cable, support slipper, damping device and the prestressed anchor that are arranged on pontic, described anchor plate is at least more than four, all be fixed on the web of pontic beam-ends, described support slipper is at least two, at the bottom of all being fixed in the pontic beam; Described prestressed cable comprises oblique cord and horizontal rope, wherein oblique cord one end is anchored on one of them anchor plate by extruded sleeve, the other end passes support slipper and is anchored on this support slipper by extruded sleeve, and horizontal rope two ends are anchored on two support slippers by extruded sleeve respectively, and described damping device is arranged on horizontal rope; Described prestressed anchor and anchor plate, support slipper fix, described anchor plate comprises the fixed connecting plate that is fixed on the pontic web plate, be arranged at the gripper shoe of fixed connecting plate one end, columned the first pressurized tube that is arranged on fixed connecting plate and is connected with gripper shoe, be arranged at the floor between fixed connecting plate and pressurized tube, and be arranged at the bolt hole on fixed connecting plate; Described oblique cord passes the first pressurized tube and is anchored in gripper shoe by extruded sleeve.
Further, described support slipper comprises the seamless steel pipe crossbeam, and runs through and be welded in the seamless steel pipe beam side wall and be used for fixedly the second pressurized tube of prestressed cable.
Again further, also be provided with the epimere that is complementary with seamless steel pipe crossbeam outer wall on described seamless steel pipe crossbeam, and this epimere two ends lay respectively on the outer wall at the second pressurized tube two ends.
Further, also be provided with on described epimere for the supporting steel plate that fixes at the bottom of the pontic beam.
In addition, described prestressed cable is epoxy coating strand; At the bottom of described supporting steel plate is pasted on the pontic beam by the tetrafluoro plate rubber.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) be provided with floor on anchor plate of the present utility model, can effectively slow down because anchor plate is long-term and stressedly make its distortion, or the problem of infringement, improved its application life, and anchor plate of the present utility model is simple in structure, make, install all easier;
(2) support slipper of the present utility model is arranged to cylindricly, makes it stressed evenly, and also is provided with epimere thereon, when stressed, can guarantee still that support slipper is indeformable long-term, has improved its application life, thereby has also made the utility model more firm;
(3) the utility model is reasonable in design, and is simple in structure, easy construction, and after installation and bridge, can greatly improve the steadiness of bridge, and safe, be suitable for promoting.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is anchor plate structural representation of the present utility model.
Fig. 3 is support slipper structural representation of the present utility model.
In above-mentioned accompanying drawing, the corresponding name of Reference numeral is called: 1-anchor plate, 2-prestressed cable, the 3-support slipper, 4-damping device, 5-fixed connecting plate, the 6-gripper shoe, 7-the first pressurized tube, 8-floor, 9-bolt hole, 10-seamless steel pipe crossbeam, 11-the second pressurized tube, 12-epimere, 13-supporting steel plate.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Fig. 1～3, old pontic External prestressed ruggedized construction comprise the anchor plate 1, prestressed cable 2, support slipper 3, damping device 4 and the prestressed anchor that are arranged on pontic, and described old bridge is T-shaped beam bridge.Concrete is that described anchor plate is more than four, all be fixed on the web of T-shaped beam beam-ends, for fear of anchor plate due to long-term stressed the distortion, cause consolidation effect of the present utility model not good, so described anchor plate comprises the fixed connecting plate 5 that is fixed on T-shaped beam web plate, be arranged at the gripper shoe 6 of fixed connecting plate one end, columned the first pressurized tube 7 that is arranged on fixed connecting plate and is connected with gripper shoe, be arranged at the floor 8 between fixed connecting plate and the first pressurized tube, and be arranged at the bolt hole 9 on fixed connecting plate.Described support slipper is more than two, all be fixed in T-shaped beam beam at the bottom of, concrete is be pasted on T-shaped beam by the tetrafluoro plate rubber at the bottom of, in order to be that support slipper is stressed evenly, so described support slipper comprises columned seamless steel pipe crossbeam 10, and the second pressurized tube 11 that runs through the seamless steel pipe beam side wall, and also be provided with the epimere 12 that is complementary with seamless steel pipe crossbeam outer wall on described seamless steel pipe crossbeam, and this epimere two ends lay respectively on the outer wall at the second pressurized tube two ends, also are provided with supporting steel plate 13 on described epimere.Described prestressed cable comprises oblique cord and horizontal rope, and this prestressed cable is selected epoxy coating strand, described oblique cord one end uses extruded sleeve to be anchored on one of them anchor plate, the other end passes support slipper and uses extruded sleeve to be anchored on this support slipper, and horizontal rope two ends use respectively extruded sleeve to be anchored on two support slippers; In order to prevent that prestressed cable from when the course of work, slowing down its vibration and causing application life not long, so be provided with damping device on the prestressed cable between support slipper, above-mentioned module and anchor plate fix.
job practices based on above-mentioned old pontic External prestressed ruggedized construction, specifically first T-shaped beam is processed, the place uses the rig perforating of loosing core at the reinforced concrete T-beam web plate, with high-strength bolt, anchor plate is fixed on web, and use extruded sleeve to be anchored on anchor plate at prestressed cable one end, this prestressed cable is oblique cord, paste again corrosion resistant plate at the bottom of reinforced concrete T-beam, to paste tetrafluoro plate rubber bearing on the supporting steel plate of support slipper and be fixed on corrosion resistant plate, then the other end with oblique cord uses extruded sleeve to be anchored on support slipper, and use the extruded sleeve anchoring to decide horizontal rope between support slipper, at last with on the anchorage installation anchor plate, and employing hydraulic jack stretch-draw prestressing force cable wire, be used for adjusting the purpose of beam body stress, again at ground tackle place's installation protective jacket, and on the prestressed cable of level, damping device is installed.
According to above-described embodiment, just can realize well the utility model.
Claims (6)
1. old pontic External prestressed ruggedized construction, comprise the anchor plate (1), prestressed cable (2), support slipper (3), damping device (4) and the prestressed anchor that are arranged on pontic, it is characterized in that, described anchor plate (1) is at least more than four, all be fixed on the web of pontic beam-ends, described support slipper (3) is at least two, at the bottom of all being fixed in the pontic beam; Described prestressed cable (2) comprises oblique cord and horizontal rope, wherein oblique cord one end is anchored on one of them anchor plate (1) by extruded sleeve, the other end passes support slipper (3) and is anchored on this support slipper (3) by extruded sleeve, and horizontal rope two ends are anchored on two support slippers (3) by extruded sleeve respectively, and described damping device (4) is arranged on horizontal rope; Described prestressed anchor and anchor plate (1), support slipper (3) fix, described anchor plate (1) comprises the fixed connecting plate (5) that is fixed on the pontic web plate, be arranged at the gripper shoe (6) of fixed connecting plate (5) one ends, be arranged at columned the first pressurized tube (7) that fixed connecting plate (5) is upper and be connected with gripper shoe (6), be arranged at the floor (8) between fixed connecting plate (5) and pressurized tube (7), and be arranged at the bolt hole (9) on fixed connecting plate (5); Described oblique cord passes the first pressurized tube (7) and is anchored in gripper shoe (6) by extruded sleeve.
2. old pontic External prestressed ruggedized construction according to claim 1, it is characterized in that, described support slipper (3) comprises seamless steel pipe crossbeam (10), and runs through and be welded in seamless steel pipe crossbeam (10) sidewall and be used for fixedly second pressurized tube (11) of prestressed cable (2).
3. old pontic External prestressed ruggedized construction according to claim 2, it is characterized in that, also be provided with the epimere (12) that is complementary with seamless steel pipe crossbeam (10) outer wall on described seamless steel pipe crossbeam (10), and this epimere (12) two ends lay respectively on the outer wall at the second pressurized tube (11) two ends.
4. old pontic External prestressed ruggedized construction according to claim 3, is characterized in that, also is provided with on described epimere (12) and the supporting steel plate (13) that fixes at the bottom of the pontic beam.
5. old pontic External prestressed ruggedized construction according to claim 4, is characterized in that, described prestressed cable (2) is epoxy coating strand.
6. old pontic External prestressed ruggedized construction according to claim 5, is characterized in that, at the bottom of described supporting steel plate (13) is pasted on the pontic beam by the tetrafluoro plate rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658271 CN202989786U (en) | 2012-12-04 | 2012-12-04 | Old bridge external prestressing reinforced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658271 CN202989786U (en) | 2012-12-04 | 2012-12-04 | Old bridge external prestressing reinforced structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202989786U true CN202989786U (en) | 2013-06-12 |
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ID=48560980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220658271 Withdrawn - After Issue CN202989786U (en) | 2012-12-04 | 2012-12-04 | Old bridge external prestressing reinforced structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202989786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926333A (en) * | 2012-12-04 | 2013-02-13 | 成都博睿基桥梁技术有限责任公司 | External prestressed reinforcement structure for old bridge and construction method thereof |
| CN112591599A (en) * | 2021-03-04 | 2021-04-02 | 中冶建筑研究总院有限公司 | Anti-fatigue prestressed variable-section steel crane beam and manufacturing method thereof |
-
2012
- 2012-12-04 CN CN 201220658271 patent/CN202989786U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926333A (en) * | 2012-12-04 | 2013-02-13 | 成都博睿基桥梁技术有限责任公司 | External prestressed reinforcement structure for old bridge and construction method thereof |
| CN102926333B (en) * | 2012-12-04 | 2014-12-03 | 成都博睿基桥梁技术有限责任公司 | External prestressed reinforcement structure for old bridge and construction method thereof |
| CN112591599A (en) * | 2021-03-04 | 2021-04-02 | 中冶建筑研究总院有限公司 | Anti-fatigue prestressed variable-section steel crane beam and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20141203 |
|
| RGAV | Abandon patent right to avoid regrant |