CN103911959A - Bridge hinge joint reinforcing method through transverse anchoring steel plates - Google Patents
Bridge hinge joint reinforcing method through transverse anchoring steel plates Download PDFInfo
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- CN103911959A CN103911959A CN201410156524.XA CN201410156524A CN103911959A CN 103911959 A CN103911959 A CN 103911959A CN 201410156524 A CN201410156524 A CN 201410156524A CN 103911959 A CN103911959 A CN 103911959A
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Abstract
The invention relates to a bridge hinge joint reinforcing method through transverse anchoring steel plates, and aims to improve loading resistance of bridge plates effectively and construct without interrupting traffic. The method has the advantages that construction is facilitated and rapid, and construction quality is easy to guarantee. According to the technical scheme, the bridge hinge joint reinforcing method through the transverse anchoring steel plates sequentially includes 1, cleaning the beam bottom edge portion; 2, adopting bolts to fix a plurality of sets of combined steel plates which cross hinge joints to connect two plate beams integrally on the two plate beams. Each set of combined steel plates comprises a strip steel plate and two backing plates respectively clamped between the plate beams and the strip steel plate.
Description
Technical field
The present invention relates to a kind of construction techniques, especially the reinforcement means of bridge hinge seam.
Background technology
Bridge hinge seam refers to the rear pouring concrete between prefabricated plate-girder (cementation of fissures) in bridge engineering, and it connects two boards beam, after plate-girder installs, before Surfacing Construction, carries out.The hinge seam bridge of existing prefabricated installation, ubiquity transverse splicing insufficient rigidity and is occurred monolithic main beam stress situation, has aggravated the impaired destruction of bridge; On the other hand, in order to meet growing load requirement, need carry out reasonably reinforcement and strengthening of necessity to bridge, to adapt to the demand of modernization construction.
Conventional reinforcing is mainly the concrete method of shotcrete, combines closely by newly increasing concrete and steel bar stress and original structure, and the Integral combined structure of composition sprayed mortar (including reinforcing bar net)---anchor pole---original structure.Together with original structure tight bond, both stop original structure to continue deformation displacement and cracking by shotcrete back-up coat, given full play to again the effect of original structure, jointly born external load effect.But this kind of method construction is comparatively complicated, and technical requirements is higher, and it is longer to expend time in, and between curing time, also normal traffic is impacted.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned background technology, a kind of improvement of bridge hinge seam reinforcement means is provided, and the method should be able to be imitated the anti-weight bearing power that improves bridge board, and can the in the situation that of uninterrupted traffic, construct, there is easy construction, quick, the feature that construction quality easily guarantees.
Technical scheme provided by the invention is:
Adopt horizontal steel plate anchor to paste reinforcement bridge hinge seam method, comprise the following steps successively:
One, cleaning beam base is along position;
Two, adopt respectively bolt fixing many secondary combined steel plates that after hinge seam, two plate-girders are connected as a single entity of laterally crossing on two plate-girders; Every secondary combined steel plate comprises a bar steel plate and two backing plates that sandwich respectively between plate-girder and bar steel plate.
Bolt hole on described plate-girder is at least greater than 5 times of bolt aperture to the distance between hinge seam.
Described bar steel plate is huge shape.
Described bolt is chemical bolt.
Described cleaning, be remove that plate-girder bottom is peeled off, loosened, the top layer of honeycomb or corrosion.
The invention has the beneficial effects as follows: the one, under the same terms, can uninterrupted traffic, allow load transmission, can not produce veneer stressed, grouting quality is guaranteed; The 2nd, adopt anchor sticking steel plate to reinforce the shear-carrying capacity that more can effectively improve plate-girder, improve the rate of utilization of strength of steel plate; The 3rd, the destruction that anchor sticking steel plate is reinforced plate-girder belongs to ductile fracture, illustrates that anchor steel reinforcing side, in improving plate-girder bearing capacity, has improved the ductility of plate-girder, has improved the RELIABILITY INDEX of member and total; The 4th, the easy construction of anchor sticking steel plate reinforcing method, construction quality is more easily guaranteed; The 5th, anchor sticking steel plate is reinforced owing to producing certain pre-tensile stress in steel plate in work progress, is conducive to improve the ability of reinforced structure opposing reloading.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present invention.
Fig. 2 is that the master of single secondary combined steel plate in Fig. 1 looks structure for amplifying schematic diagram.
Fig. 3 is the structure for amplifying schematic diagram that axle casing hinge seam cross section of the present invention is installed.
The specific embodiment
Further illustrate below in conjunction with embodiment shown in the drawings.
Combined steel plate shown in Fig. 2, comprises the backing plate 2 of a bar steel plate 1 and two steel; The one side of backing plate is directly fitted in the bottom surface of plate-girder 5, and bar steel plate covers on backing plate again, then uses respectively the preferred chemical bolt of bolt 3() bar steel plate and backing plate are fastened on plate-girder one by one.Owing to having adopted chemical bolt (outsourcing), thereby this bolt has bolt action.
For guaranteeing bonding strength, bolt fixed position need have certain distance with plate-girder edge; For this reason, bolt hole is at least greater than 5 times of bolt aperture to the distance between hinge seam.Therefore, bar steel plate is laterally crossed over after hinge seam, and its every one end extends transversely into the distance A of plate-girder, should guarantee that bolt hole has enough distances between hinge seam.In addition, for guard shield soffit, reduce stress, the width of described backing plate should be greater than the width of bar steel plate; When installation, a side of the length direction of backing plate should extend in (formation step shape) outside bar steel plate.
Thickness, length and the width of the above bar steel plate and backing plate, determine according to designing requirement respectively.Steel plate material is also selected as requested, recommend adoption Q235.
Obviously when, anchor of the present invention pastes reinforcement bridge hinge seam: need comprise the following steps successively:
One, remove that plate-girder bottom is peeled off, loosened, the top layer of honeycomb or corrosion;
Two, hole on two plate-girders according to designing requirement (bolt hole); In cleaning hole, after floating ash, adopt chemical bolt that bar steel plate and two backing plates are separately fixed to (bar steel plate is wherein crossed over the hinge seam between two bridge boards) on two bridge boards; The distance keeping between combination of two steel plate is determined (distance between combination of two steel plate can equate or be unequal) as requested.
Described bar steel plate is normally: length direction is width two-to-one more than; Can be huge shape, or the arbitrary shape of strip.
Claims (5)
1. adopt horizontal steel plate anchor to paste reinforcement bridge hinge seam method, comprise the following steps successively:
One, cleaning beam base is along position;
Two, adopt respectively bolt at the upper fixing many secondary combined steel plates that after hinge seam, two plate-girders are connected as a single entity of laterally crossing over of two plate-girders (5); Every secondary combined steel plate comprises a bar steel plate (2) and two backing plates (3) that sandwich respectively between plate-girder and bar steel plate.
2. the horizontal steel plate anchor of employing according to claim 1 pastes reinforcement bridge hinge seam method, it is characterized in that: the bolt hole on described plate-girder is at least greater than 5 times of bolt aperture to the distance between hinge seam.
3. the horizontal steel plate anchor of employing according to claim 2 pastes reinforcement bridge hinge seam method, it is characterized in that: described bar steel plate is huge shape.
4. the horizontal steel plate anchor of employing according to claim 3 pastes reinforcement bridge hinge seam method, it is characterized in that: described bolt is chemical bolt.
5. the horizontal steel plate anchor of employing according to claim 4 pastes reinforcement bridge hinge seam method, it is characterized in that: described cleaning, be remove that plate-girder bottom is peeled off, loosened, the top layer of honeycomb or corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156524.XA CN103911959A (en) | 2014-04-18 | 2014-04-18 | Bridge hinge joint reinforcing method through transverse anchoring steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156524.XA CN103911959A (en) | 2014-04-18 | 2014-04-18 | Bridge hinge joint reinforcing method through transverse anchoring steel plates |
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| Publication Number | Publication Date |
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| CN103911959A true CN103911959A (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410156524.XA Pending CN103911959A (en) | 2014-04-18 | 2014-04-18 | Bridge hinge joint reinforcing method through transverse anchoring steel plates |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714696A (en) * | 2016-03-14 | 2016-06-29 | 岩土科技股份有限公司 | Concrete bridge plate reinforcing method |
| CN111206498A (en) * | 2020-01-16 | 2020-05-29 | 姜江 | Road bridge construction prefabricated plate connection structure |
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| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Strengthening and pulling device of hinge gap of compositional plate girder bridge |
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| JP2012207513A (en) * | 2011-03-15 | 2012-10-25 | Juichi Yamauchi | Water stop device for road bridge seam part, and construction method and repair method thereof |
| CN102296546A (en) * | 2011-06-02 | 2011-12-28 | 河南省交通工程加固有限责任公司 | Treatment scheme of hollow slab bridge hinge joint defects and construction process thereof |
| CN202194081U (en) * | 2011-06-02 | 2012-04-18 | 河南省交通工程加固有限责任公司 | Hinge joint disease treatment structure of hollow slab bridge |
| CN202450441U (en) * | 2012-02-29 | 2012-09-26 | 郑州大学 | Stiffness matching system for broadening and transforming hollow slab bridges |
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| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Strengthening and pulling device of hinge gap of compositional plate girder bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714696A (en) * | 2016-03-14 | 2016-06-29 | 岩土科技股份有限公司 | Concrete bridge plate reinforcing method |
| CN105714696B (en) * | 2016-03-14 | 2017-08-15 | 岩土科技股份有限公司 | Concrete bridge beam slab reinforcement means |
| CN111206498A (en) * | 2020-01-16 | 2020-05-29 | 姜江 | Road bridge construction prefabricated plate connection structure |
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Application publication date: 20140709 |