CN202227254U - Structure for reinforcing prestressed concrete box beam by horizontal reinforced steel frame - Google Patents
Structure for reinforcing prestressed concrete box beam by horizontal reinforced steel frame Download PDFInfo
- Publication number
- CN202227254U CN202227254U CN201120229228XU CN201120229228U CN202227254U CN 202227254 U CN202227254 U CN 202227254U CN 201120229228X U CN201120229228X U CN 201120229228XU CN 201120229228 U CN201120229228 U CN 201120229228U CN 202227254 U CN202227254 U CN 202227254U
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- prestressed concrete
- concrete box
- box beam
- reinforcing
- box girder
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Abstract
The utility model discloses a structure for reinforcing a prestressed concrete box beam by a horizontal reinforced steel frame, belonging to the field of bridge reinforce. The prestressed concrete box beam structure comprises an H beam, a stiffening rib, a vertical tension screw rod, an anchor screw rod and an anchor bolt. The technology can be used for reinforcing the prestressed concrete box beam, and the self-weight of the beam is hardly increased, so that the construction is relatively simpler and more convenient, and the reinforcement cost is lower; and by the analysis of structural stress, the structure is the safest method for reinforcing the prestressed concrete box beam.
Description
Technical field
The utility model relates to a kind of steelframe of laterally putting more energy into and reinforces PC Box Girder Structure, belongs to the bridge strengthening field.
Background technology
In the prestressed concrete box-beam bridge of being built at home at present, various cracks often occur, influence the durability of bridge use and the safety of operation.It is a kind of more effective reinforcing technique that the steelframe of laterally putting more energy into is reinforced PC Box Girder Structure.
What is called is laterally put more energy into, and to reinforce PC Box Girder Structure be whenever to increase the closed steelframe of putting more energy into one at a distance from 3 meters in that the girder case is indoor to steelframe; And apply vertical prestressing with vertical pulling force screw rod between anchor beam up and down at the steelframe of putting more energy into; To recover or to improve the bearing capacity of original structure, suppress a technology of crack development.
The utility model proposes a kind of steelframe of laterally putting more energy into and reinforces PC Box Girder Structure, has characteristics safe and reliable, easy construction.
The utility model content
The technical problem that the utility model will solve is the defective that overcomes existing reinforcing technique, provides a kind of novel steelframe of laterally putting more energy into to reinforce PC Box Girder Structure.The closed steelframe of putting more energy into can effectively improve the holistic resistant behavior of prestressed concrete box girder, improves the local pressure state of web and base plate.Anchor beam adopts epoxy mortar H shaped steel to stick on prestressed concrete box girder top, the end, the web; Apply vertical pulling force with screw rod between anchor beam up and down at the steelframe of putting more energy into; With the moment of flexure that the deadweight of balance base plate produces, owing to increased vertical pull bar and anchor beam, the stressed of base plate improves significantly.Adopt this method that prestressed concrete box girder is reinforced, deadweight increases little, and it is also relatively simple and convenient to construct, and the reinforcing expense is lower.From structure stress analysis is safest a kind of method of reinforcing prestressed concrete box girder.
The utility model is realized through following technical scheme: the steelframe of laterally putting more energy into is reinforced PC Box Girder Structure, comprises H shaped steel in the composition, stiffening rib, vertical pulling force screw rod, anchorage screw, anchor bolt.
The technological progress that the utility model is obtained is: structural safety is reliable after reinforcing, easy construction.
Description of drawings
Fig. 1, laterally the steelframe of putting more energy into is reinforced PC Box Girder Structure 1/2 cross-sectional drawing
Fig. 2, laterally the steelframe of putting more energy into is reinforced the PC Box Girder Structure skiagraph
Wherein: 1, vertical pulling force screw rod, 2, the top board anchorage screw, 3, the base plate anchorage screw, 4, anchor bolt, 5, stiffening rib, 6, H shaped steel, 7, weld seam, 8, former prestressed concrete box girder.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is explained further details:
To prestressed concrete box girder as shown in Figure 1, when adopting the steelframe of laterally putting more energy into to reinforce, H shaped steel 6 is sticked on the top, the end, web of former prestressed concrete box girder 8.With the anchor bolt 4 of heeling-in on former prestressed concrete box girder 8, top board anchorage screw 2, base plate anchorage screw 3 is anchored at 6 pressurizations of H shaped steel on the former prestressed concrete box girder 8.With weld seam 7 the H shaped steel 6 after the anchoring is linked to be integral body, stiffening rib 5 is welded on the H shaped steel 6 after the anchoring, form the integral body steelframe of laterally putting more energy into.Vertical pulling force screw rod 1 is installed on the H shaped steel 6 after the anchoring and applies vertical prestressing, fixing up to the back that meets design requirement to vertical pulling force screw rod 1.
As stated, just can realize the utility model.
Claims (1)
1. reinforce PC Box Girder Structure with the steelframe of laterally putting more energy into for one kind, it is characterized in that: paste H shaped steel on the former prestressed concrete box girder, stiffening rib is welded on the H shaped steel, and vertical pulling force screw rod is installed on the H shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229228XU CN202227254U (en) | 2011-06-30 | 2011-06-30 | Structure for reinforcing prestressed concrete box beam by horizontal reinforced steel frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120229228XU CN202227254U (en) | 2011-06-30 | 2011-06-30 | Structure for reinforcing prestressed concrete box beam by horizontal reinforced steel frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202227254U true CN202227254U (en) | 2012-05-23 |
Family
ID=46077847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120229228XU Expired - Fee Related CN202227254U (en) | 2011-06-30 | 2011-06-30 | Structure for reinforcing prestressed concrete box beam by horizontal reinforced steel frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202227254U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648930A (en) * | 2016-02-25 | 2016-06-08 | 成都迅德科技有限公司 | Compression-resistant strengthening structure of bridge |
| CN109610350A (en) * | 2018-12-29 | 2019-04-12 | 北京工业大学 | A kind of ruggedized construction of prestressed concrete box girder |
| CN110396945A (en) * | 2019-07-12 | 2019-11-01 | 长安大学 | The bracing means and reinforcement means of the external vertical prestressing of concrete bridge web |
-
2011
- 2011-06-30 CN CN201120229228XU patent/CN202227254U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648930A (en) * | 2016-02-25 | 2016-06-08 | 成都迅德科技有限公司 | Compression-resistant strengthening structure of bridge |
| CN105648930B (en) * | 2016-02-25 | 2017-05-10 | 潘亚杰 | Compression-resistant strengthening structure of bridge |
| CN109610350A (en) * | 2018-12-29 | 2019-04-12 | 北京工业大学 | A kind of ruggedized construction of prestressed concrete box girder |
| CN110396945A (en) * | 2019-07-12 | 2019-11-01 | 长安大学 | The bracing means and reinforcement means of the external vertical prestressing of concrete bridge web |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |