CN203007856U - External prestressing reinforcement system for hollow slab girder bridge - Google Patents
External prestressing reinforcement system for hollow slab girder bridge Download PDFInfo
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- CN203007856U CN203007856U CN 201320011710 CN201320011710U CN203007856U CN 203007856 U CN203007856 U CN 203007856U CN 201320011710 CN201320011710 CN 201320011710 CN 201320011710 U CN201320011710 U CN 201320011710U CN 203007856 U CN203007856 U CN 203007856U
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- hollow slab
- external prestressing
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Abstract
The utility model relates to an external prestressing reinforcement system for a hollow slab girder bridge, which comprises anchor bolts (1), angle steel anchor plates (2), prestressing rebars (3), channel steel anchor plates (4), and a prestressing steel strand (5), wherein the channel steel anchor plates are fixed on side plates at the two ends of a girder bridge through the anchor bolts; the two ends of the prestressing steel strand are positioned under a base plate of the girder bridge in a stretch-draw manner and anchored on the channel steel anchor plates; the angle steel anchor plates are fixed on two sides of a top plate of the girder bridge through the anchor bolts; the two ends of each prestressing rebar are anchored to each angle steel anchor plate in a stretch-draw manner; and the angle steel anchor plates and the prestressing rebars are buried in a pavement layer of a bridge floor. The external prestressing reinforcement system, provided by the utility model, improves the stress state of the girder bridge, reduces hinge joints, and increases stiffness and deflection of the girder bridge structure, and is applicable to the technical field of bridge reinforcement.
Description
Technical field
The utility model relates to a kind of external prestressing strengthening system of Hollow Slab Beam Bridge, can be used for the technical field of bridge strengthening.
Background technology
Former thereby Major Diseases that cause usually occurs in the strand seam place between hollowcore slab due to external load increase, architecture quality defective, corrosion and damage etc. on the assembling Hollow Slab Beam Bridge.Main manifestations on bridge deck pavement is along hollowcore slab hinge seam longitudinal cracking, every hollowcore slab that its longitudinal cracking that degree of disease is serious spreads all over the view picture bridge floor cuts with scissors the side of sewing on, aggravate near runway automotive wheels trace, form local check crack, produce broken, the loose and collapse phenomenon of deck paving, cause at last the longitudinal groove of bridge deck pavement part.Main manifestations on base plate be between plate hinge seam concrete loose, peel off, the phenomenon such as infiltration.
For the reinforcing of bridge, Enlargement of Section, affixing steel plate method are arranged at present, paste fibrous composite reinforcing method, external prestressing strengthening method, the large class of change structure system reinforcing method five.The external prestressing strengthening method is by set up external prestressing tendon in the bottom of bridge board, existing beam body initiatively to be applied external force, with the reinforcement means of the force-bearing situation that improves original structure.External prestressing strengthening belongs to initiatively to be reinforced, by to after add supporting material and apply prestressing force, consist of the prestressed reinforcement system, thereby improve greatly supporting capacity and the rigidity of structure of structure, the effectively crack of control structure and amount of deflection, equipment needed thereby is simple, human input is few, construction period is short, and external prestressing tendon also is easy to adjust and change convenient construction.
Although there is above plurality of advantages in external prestress strengthening method, at present applies transverse prestress at assembling hollow slab beam base plate and reinforce the method for Hollow Slab Beam Bridge and have following potential risks:
(1) under Vehicle Load, hinge is sewed on edge and tensile stress may be occurred;
(2) only apply transverse prestress at base plate, base plate pre-applied force bias may make the horizontal tension of hinge seam cross section upper limb.
The stack of above-mentioned two kinds of effects may make the hinge seam be in disadvantageous stress.For this reason, the utility model proposes a kind of external prestressing strengthening system of improved Hollow Slab Beam Bridge, it has reduced the horizontal upper limb tensile stress that the wobbler action of Bottom Board Steel twisted wire produces, and has further improved the stress of hinge seam, has reduced the generation in crack.
The utility model content
The utility model provides a kind of external prestressing strengthening system of Hollow Slab Beam Bridge, can more effectively prevent the generation in crack, has improved supporting capacity and the rigidity of structure of structure.
External prestressing strengthening system according to Hollow Slab Beam Bridge of the present utility model, comprise anchor bolt, angle steel anchor plate, prestressed reinforcement, channel-section steel anchor plate and prestress wire, the channel-section steel anchor plate is fixed on by anchor bolt on the side plate at beam bridge two ends, the two ends of prestress wire below beam bridge base plate position stretch-draw anchor on the channel-section steel anchor plate; The angle steel anchor plate is fixed on the both sides of beam bridge top board by anchor bolt, the two ends stretch-draw anchor of prestressed reinforcement is on the angle steel anchor plate, and angle steel anchor plate and prestressed reinforcement all are embedded in the layer of mating formation of bridge floor.
Preferably, prestressed reinforcement is galvanizing steel, and prestress wire is high-strength underrelaxation steel strand or stranded galvanized steel.In addition, can also be provided with stiffening rib on angle steel anchor plate and channel-section steel anchor plate.
Preferably, the length range of prestressed reinforcement covers in the layer of mating formation the hinged seam along horizontal direction.Prestressed reinforcement can also be by on the fixing rectangular top board that is fixed on beam bridge.The two ends of prestressed reinforcement can be fixed on the angle steel anchor plate by anti-skidding fixture and lifting bolt successively.
Adopt the external prestressing strengthening system of Hollow Slab Beam Bridge of the present utility model, not only arrange external transverse prestress anchor cable on the base plate of beam, also arrange simultaneously external transverse prestress anchor cable on top board, improved the stress of beam bridge, reduce the generation of hinge seam, increased rigidity and the amount of deflection of beam bridge structure.
Description of drawings
Fig. 1 has shown the layout schematic diagram according to the external prestressing strengthening system of Hollow Slab Beam Bridge of the present utility model.
Fig. 2 has shown the sectional view in A-A cross section in Fig. 1.
Fig. 3 is the schematic diagram of angle steel anchor plate.
Fig. 4 is the schematic diagram of channel-section steel anchor plate.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, hereinafter in connection with accompanying drawing, embodiment of the present utility model is elaborated.Need to prove, in the situation that do not conflict, the embodiment in the application and the feature in embodiment be any combination mutually.
Referring to Fig. 1, wherein shown the layout schematic diagram according to the external prestressing strengthening system of Hollow Slab Beam Bridge of the present utility model.The external prestressing strengthening system comprises anchor bolt 1, angle steel anchor plate 2, prestressed reinforcement 3, channel-section steel anchor plate 4 and prestress wire 5, prestressed reinforcement 3 wherein can be galvanizing steel, and prestress wire 5 can be high-strength underrelaxation steel strand or stranded galvanized steel.Channel-section steel anchor plate 4 is fixed on by anchor bolt 1 on the side plate at beam bridge two ends, the two ends of prestress wire 5 below beam bridge base plate position stretch-draw anchor on channel-section steel anchor plate 4.Angle steel anchor plate 2 is fixed on the top board both sides of beam bridge by anchor bolt 1, the two ends stretch-draw anchor of prestressed reinforcement 3 is on angle steel anchor plate 2.Angle steel anchor plate 2 and prestressed reinforcement 3 all are embedded in the layer of mating formation of bridge floor.Preferably, can also be provided with stiffening rib on angle steel anchor plate 2 and channel-section steel anchor plate 4, to strengthen the local stability of anchor plate.More preferably, the length range of prestressed reinforcement 3 covers in the layer of mating formation the hinged seam along horizontal direction.
Referring to Fig. 2, wherein shown the sectional view in A-A cross section in Fig. 1.Preferably, prestressed reinforcement 3 can also be fixed on the top board of beam by fixing rectangular 6 at a certain distance, to reduce the strain relaxation of prestressed reinforcement 3.In addition, the two ends of prestressed reinforcement 3 can also be fixed on angle steel anchor plate 2 by anti-skidding fixture 7 and lifting bolt 8 successively, to strengthen the anchoring property of prestressed reinforcement 3.
Referring to Fig. 3 and Fig. 4, wherein shown respectively the schematic diagram of angle steel anchor plate 2 and channel-section steel anchor plate 4.
Adopt the external prestressing strengthening system of Hollow Slab Beam Bridge of the present utility model, at the bottom of wherein prestress wire is arranged beam, produce external prestressing to a certain degree, make the horizontal lower edge of hollowcore slab be in pressured state, the balanced transversal moment of flexure.Simultaneously, the arrangement prestress reinforcing bar has reduced the horizontal upper limb tensile stress that the wobbler action of Bottom Board Steel twisted wire produces on top board, has further improved the stress of hinge seam, has improved Load-bearing capacity of beam, has reduced the generation in crack.
Although the disclosed embodiment of the utility model as above, the embodiment that described content just adopts for the ease of understanding the utility model is not to limit the utility model.Technician under any the utility model in technical field; under the prerequisite that does not break away from the disclosed spirit and scope of the utility model; can do any modification and variation what implement in form and on details; but scope of patent protection of the present utility model still must be as the criterion with the scope that appending claims was defined.
Claims (7)
1. the external prestressing strengthening system of a Hollow Slab Beam Bridge, comprise anchor bolt (1), angle steel anchor plate (2), prestressed reinforcement (3), channel-section steel anchor plate (4) and prestress wire (5), it is characterized in that, channel-section steel anchor plate (4) is fixed on the side plate at beam bridge two ends by anchor bolt (1), the two ends of prestress wire (5) below beam bridge base plate position stretch-draw anchor on channel-section steel anchor plate (4); Angle steel anchor plate (2) is fixed on the both sides of beam bridge top board by anchor bolt (1), the two ends stretch-draw anchor of prestressed reinforcement (3) is on angle steel anchor plate (2), and described angle steel anchor plate (2) and described prestressed reinforcement (3) all are embedded in the layer of mating formation of bridge floor.
2. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, wherein said prestressed reinforcement (3) is galvanizing steel.
3. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, wherein said prestress wire (5) is high-strength underrelaxation steel strand or stranded galvanized steel.
4. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, also be provided with stiffening rib on wherein said angle steel anchor plate (2) and described channel-section steel anchor plate (4).
5. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, the length range of wherein said prestressed reinforcement (3) covers in the layer of mating formation the hinged seam along horizontal direction.
6. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, wherein said prestressed reinforcement (3) is fixed on the top board of beam bridge by fixing rectangular (6).
7. the external prestressing strengthening system of Hollow Slab Beam Bridge according to claim 1, the two ends of wherein said prestressed reinforcement (3) are fixed on angle steel anchor plate (2) by anti-skidding fixture (7) and lifting bolt (8) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011710 CN203007856U (en) | 2013-01-10 | 2013-01-10 | External prestressing reinforcement system for hollow slab girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011710 CN203007856U (en) | 2013-01-10 | 2013-01-10 | External prestressing reinforcement system for hollow slab girder bridge |
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| Publication Number | Publication Date |
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| CN203007856U true CN203007856U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320011710 Expired - Fee Related CN203007856U (en) | 2013-01-10 | 2013-01-10 | External prestressing reinforcement system for hollow slab girder bridge |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993753A (en) * | 2014-06-04 | 2014-08-20 | 郑州大学 | Angle hoop tie reinforcement system of traditional stone masonry house and construction technology |
| CN104612035A (en) * | 2015-01-21 | 2015-05-13 | 大连理工大学 | Hollow slab bridge structure enhancing transverse rigidity |
| CN105088973A (en) * | 2015-08-11 | 2015-11-25 | 交通运输部公路科学研究所 | Method for reinforcing hollow slab beam |
| CN105297641A (en) * | 2015-10-29 | 2016-02-03 | 北京中交铁建科技发展有限公司 | Highway T beam diaphragm plate prestress reinforcing structure and working method for reinforcement using reinforcing structure |
| CN105421813A (en) * | 2015-12-07 | 2016-03-23 | 中国建筑第八工程局有限公司 | External prestressing reinforcing method for concrete truss |
| CN105735148A (en) * | 2016-03-04 | 2016-07-06 | 中交路桥（北京）科技有限公司 | Strengthening method for treating hollow board bridge single board stress under bridge |
| CN107740353A (en) * | 2017-09-28 | 2018-02-27 | 浙江交工宏途交通建设有限公司 | The longitudinal spliced structure of highway hollow slab girder and joining method |
| CN108342996A (en) * | 2018-02-26 | 2018-07-31 | 陈建伟 | A kind of highway bridge prestress strengthening method |
| CN108755459A (en) * | 2018-08-10 | 2018-11-06 | 山东交通学院 | A kind of compound anti-bend reinforced construction of old Hollow Slab Beam Bridge steel wire rope MPC and construction method |
| CN109457630A (en) * | 2018-12-19 | 2019-03-12 | 贝正河北工程技术有限公司 | A kind of Hollow Slab Beam Bridge transverse prestress friction plate ruggedized construction |
| CN113215964A (en) * | 2021-06-15 | 2021-08-06 | 山西省交通科技研发有限公司 | Structure and method for reinforcing transverse connection of hollow slab bridge of highway |
-
2013
- 2013-01-10 CN CN 201320011710 patent/CN203007856U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993753B (en) * | 2014-06-04 | 2016-05-04 | 郑州大学 | Tradition stone-made house angle hoop drawknot hardened system and construction technology |
| CN103993753A (en) * | 2014-06-04 | 2014-08-20 | 郑州大学 | Angle hoop tie reinforcement system of traditional stone masonry house and construction technology |
| CN104612035A (en) * | 2015-01-21 | 2015-05-13 | 大连理工大学 | Hollow slab bridge structure enhancing transverse rigidity |
| CN105088973A (en) * | 2015-08-11 | 2015-11-25 | 交通运输部公路科学研究所 | Method for reinforcing hollow slab beam |
| CN105297641B (en) * | 2015-10-29 | 2016-08-24 | 北京中交铁建科技发展有限公司 | Highway T beam diaphragm plate prestressed reinforcement structure and carry out the engineering method reinforced with it |
| CN105297641A (en) * | 2015-10-29 | 2016-02-03 | 北京中交铁建科技发展有限公司 | Highway T beam diaphragm plate prestress reinforcing structure and working method for reinforcement using reinforcing structure |
| CN105421813A (en) * | 2015-12-07 | 2016-03-23 | 中国建筑第八工程局有限公司 | External prestressing reinforcing method for concrete truss |
| CN105735148A (en) * | 2016-03-04 | 2016-07-06 | 中交路桥（北京）科技有限公司 | Strengthening method for treating hollow board bridge single board stress under bridge |
| CN107740353A (en) * | 2017-09-28 | 2018-02-27 | 浙江交工宏途交通建设有限公司 | The longitudinal spliced structure of highway hollow slab girder and joining method |
| CN107740353B (en) * | 2017-09-28 | 2019-03-05 | 浙江交工宏途交通建设有限公司 | The longitudinal spliced structure of highway hollow slab girder and joining method |
| CN108342996A (en) * | 2018-02-26 | 2018-07-31 | 陈建伟 | A kind of highway bridge prestress strengthening method |
| CN108342996B (en) * | 2018-02-26 | 2019-05-21 | 陈建伟 | A kind of highway bridge prestress strengthening method |
| CN108755459A (en) * | 2018-08-10 | 2018-11-06 | 山东交通学院 | A kind of compound anti-bend reinforced construction of old Hollow Slab Beam Bridge steel wire rope MPC and construction method |
| CN109457630A (en) * | 2018-12-19 | 2019-03-12 | 贝正河北工程技术有限公司 | A kind of Hollow Slab Beam Bridge transverse prestress friction plate ruggedized construction |
| CN113215964A (en) * | 2021-06-15 | 2021-08-06 | 山西省交通科技研发有限公司 | Structure and method for reinforcing transverse connection of hollow slab bridge of highway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140110 |