CN206052571U - A kind of prestress rope Shear Strengthening concrete box girder - Google Patents
A kind of prestress rope Shear Strengthening concrete box girder Download PDFInfo
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- CN206052571U CN206052571U CN201620546393.0U CN201620546393U CN206052571U CN 206052571 U CN206052571 U CN 206052571U CN 201620546393 U CN201620546393 U CN 201620546393U CN 206052571 U CN206052571 U CN 206052571U
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- box girder
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Abstract
The utility model discloses a kind of prestress rope Shear Strengthening concrete box girder, including the hardened system on concrete box girder, hardened system includes some steel plate strips, and each steel plate strip is oblique embedded and is anchored in box girder web both sides；Also include four angle steel, four angle steel is installed in box beam or so wing plate bottom and inner side top board bottom by respective wherein one side level respectively, a row bolt hole is offered on another side along its length respectively, some adjustable bolts are correspondingly locked in the bolt hole of each angle steel one by one；In the web outside of concrete box girder, there is tensioning around lintel bottom on steel wire rope and two ends are anchored through the annulus on adjustable bolt, form steel wire cable clamp.Prestressing force is applied to steel wire rope by adjustable bolt in reinforcing, special tensioning equipment need not be adopted, it is convenient to construct, and substantially increases efficiency of construction.
Description
Technical field
This utility model is related to reinforced beam reinforcement technique field, specifically a kind of prestress rope Shear Strengthening
Concrete box girder.
Background technology
Large span prestressed concrete box girder bridge is built in China's economy and the fast development of society, Daxing, because box-shaped is cut
Face torsional rigidity is big, has good stability, and adapts to the requirement of Modern Construction method, but due to design theory imperfection, construction matter
The reason for aspects such as amount defect, overload, the maintenance and reinforcement problem of old bridge becomes increasingly conspicuous.Existing reinforced beam resists
Cut reinforcement technique mainly have Enlargement of Section, reinforcement by sticking of sheets, paste fibrous composite method for strengthening, setting support method for strengthening,
Steel strand wires mesh sheet-polymer mortar method for strengthening etc..There is problems with existing reinforcement means：(1) reinforcement material and original component
Between there is Stress resort effect, cooperation ability is poor, largely effects on consolidation effect；(2) reinforcement material end anchorage length
Not enough, easily find the stripping damage of anchored end, it is impossible to give full play to the strength of materials；(3) increase the sectional dimension of original component,
Increase deadweight, affects sight and uses.This utility model people proposes that after further investigation a kind of new consolidation effect is excellent, resists
Superior performance is cut, strong applicability makes full use of the Shear Strengthening concrete box girder and its reinforcement means of box beam inner space.
Utility model content
Goal of the invention：In order to overcome the deficiencies in the prior art, this utility model to provide a kind of prestress rope
Shear Strengthening concrete box girder.
Technical scheme：To solve above-mentioned technical problem, a kind of prestress rope Shear Strengthening coagulation of the present utility model
Native box beam, including the hardened system on concrete box girder, hardened system includes some steel plate strips, and each steel plate strip is oblique embedding
Enter and be anchored in box girder web both sides；Also include four angle steel, four angle steel are fixedly mounted with by respective wherein level respectively
In box beam or so wing plate bottom and inner side top board bottom, row's bolt hole on another side, is respectively offered along its length, it is some
Bar adjustable bolt is correspondingly locked in the bolt hole of each angle steel one by one；In the web outside of concrete box girder, steel wire rope is had
It is tensioned around lintel bottom and two ends is anchored through the annulus on adjustable bolt, forms steel wire cable clamp.
Wherein, web outside opens up row's slant notch, length of the notch length for strengthening steel slab bar, and does not extend
To top board, the width and thickness of the width and depth respectively strengthening steel slab bar of the notch, strengthening steel slab bar are respectively arranged on each
In notch.
Wherein, a plurality of steel plate strip is pasted in notch respectively, and the upper and lower ends anchoring of each steel plate strip.
Wherein, four angle steel on respectively offer installing hole and be horizontally installed to treat the reinforcement wing by chemical bolt
Plate or so bottom and treat top board bottom on the inside of reinforcement.
Wherein, web and wing plate intersection or so respectively open up settingization in totally four row's chemical bolt installing hole, each installing hole
Bolt is learned, for fixing four steering rod irons.
Wherein, steel wire rope bypasses the steel plate washer of rod iron and bottom edge at the top of web, circle of the two ends through adjustable bolt
Ring, and pinned with extruding anchor head, the nut for then rotating adjustable bolt carries out tensioning to steel wire rope, forms " U " type hoop.
Wherein, steel wire rope bypasses the rod iron at the top of web, and one end passes through the annulus of adjustable bolt and pinned with extruding anchor head,
The other end passes through the anchorage of web bottom and is latched with extruding anchor head, and the nut for then rotating adjustable bolt carries out opening to steel wire rope
Draw, form " I " type hoop.
Wherein, two panels web inside bottom, anchors a steel plate strip with chemical bolt respectively, and rope ground tackle is fixed on
In steel plate strip.
Wherein, protection mortar is also set up on the outside of hardened system.
Beneficial effect：A kind of prestress rope Shear Strengthening concrete box girder of the present utility model, with following beneficial
Effect：
1st, prestressing force is applied to steel wire rope by adjustable bolt in reinforcing, special tensioning equipment need not be adopted, it is convenient to construct,
Substantially increase efficiency of construction；
2nd, prestressing force is applied with to steel wire rope, Stress resort effect can be prevented effectively from, improve consolidation effect；
3rd, using steel plate strip and the common reinforced concrete member of prestress rope collaborative work, substantially increase and wait to reinforce
The shear-carrying capacity of beam；
4th, the anchored end of steel wire rope is placed in into wing plate bottom and steering rod iron is set, anchored when deck-molding can be avoided less
The drawbacks of length is inadequate, improves the suitability of the reinforcement means；
While arrangement prestress steel wire rope, the anti-of reinforcement is treated in effectively utilizes box beam inner space, raising inside box beam
Cut bearing capacity；
5th, construction cost is relatively low, and resistance to corrosion is strong, while the shear behavior of concrete component is effectively improved, to knot
Structure deadweight is little, with excellent structural behaviour and economic benefit.
Description of the drawings
Fig. 1 is front view of the present utility model；
Fig. 2 is A-A in Fig. 1 to sectional view；
Fig. 3 is B-B direction sectional view in Fig. 2.
In figure, 1- angle steel, 2- adjustable bolts, 21- annulus, 3- steering rod irons, 4- steel wire ropes, 5- extruding anchor heads, 6-ization
Learn bolt, 61- screw rods, 7- nuts, 9- steel plate washers, 91- chamferings, the oblique reinforcing steel plate strips of 10-, 111- anchor plates, 121-
Anchorage, L- concrete box girders.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.
As shown in Figure 1 to Figure 3, a kind of prestress rope Shear Strengthening concrete box girder, including hardened system, reinforces
System includes some steel plate strips, and each steel plate strip is oblique embedded and is anchored in box girder web both sides；Also including four angle steel 1, four
Bar angle steel 1 is installed in box beam or so wing plate bottom and inner side top board bottom, another side by respective wherein one side level respectively
On respectively open up along its length and be equipped with row's bolt hole, correspondingly lock is arranged on each angle steel 1 to some adjustable bolts 2 one by one
In bolt hole；In the web outside of concrete box girder, steel wire rope 4 there is into tensioning around lintel bottom and two ends are disposed through adjustable spiral shell
Annulus 21 on bolt 2 is anchored, and is formed steel wire rope 4 and is bound round.Web outside opens row's slant notch, and the notch length is reinforcing steel
The length of lath, and top board is not extended to, the width and depth of the notch are respectively equal to the width and thickness of strengthening steel slab bar,
Strengthening steel slab bar is respectively and fixedly installed in each notch.A plurality of steel plate strip is pasted in notch respectively, and each steel plate
The upper and lower ends anchoring of bar.Respectively open up on one side of four angle steel 1 and be equipped with installing hole and be horizontally installed to treat by chemical bolt 6
Reinforcement wing plate or so bottom and treat top board bottom on the inside of reinforcement.Web and wing plate intersection or so are respectively opened up puts totally four rowization
Learn, for fixing four steering rod irons 3.Steel wire rope 4 bypasses abdomen
The steel plate washer of the rod iron and bottom edge in top of the plate portion, annulus 21 of the two ends through adjustable bolt 2, and pinned with extruding anchor head 5, so
The nut for rotating adjustable bolt 2 afterwards carries out tensioning to steel wire rope 4, forms " U " type hoop.Steel wire rope 4 bypasses the rod iron at the top of web,
One end passes through the annulus 21 of adjustable bolt 2 and is pinned with extruding anchor head 5, and the other end passes through the anchorage of web bottom and uses extruding anchor
5 locks, the nut for then rotating adjustable bolt 2 carry out tensioning to steel wire rope 4, form " I " type hoop.Bottom on the inside of two panels web
Portion, anchors a steel plate strip with chemical bolt 6 respectively, and 4 anchorage of steel wire rope is fixed in steel plate strip.Go back on the outside of hardened system
Protection mortar is set.
This utility model also provides a kind of prestress rope Shear Strengthening concrete boxlike beam, using following methods plus
Gu：
A, in concrete box girder L box beams to be reinforced or so wing plate bottom and inner side top board bottom level to fixing two pairs of angle steel
1；Respectively opened up on the another side of angle steel along its length and be equipped with row's bolt hole, some adjustable bolts 2 for being provided with annulus
Correspondingly lock is arranged in the bolt hole of angle steel one by one；
B, treating reinforcement two panels web inside bottom, anchor an anchor slab 111 with chemical bolt 6 respectively, and by steel wire rope
Anchorage 121 is fixed on anchor slab 111；
C, steering rod iron 3 is horizontally mounted respectively in web to be reinforced and wing plate intersection or so；
D, on the outside of box girder web to be reinforced, by it is some steel plate strips 10 oblique it is embedded be pasted on box girder web both sides, on
It is lower to be anchored with bolt 6 and steel plate washer 9 respectively；
E, according to Len req intercept steel wire rope 4, steel wire rope 4 is bypassed the steel of the rod iron 3 and bottom edge at the top of web
Pad 9, annulus 21 of the two ends through adjustable bolt, and pinned with extruding anchor head 5, the nut 7 of adjustable bolt is then rotated to steel
Cord 4 carries out tensioning, forms " U " type hoop；
F, on the inside of spar-box web to be reinforced, also according to Len req intercept steel wire rope 4, steel wire rope 4 is bypassed into abdomen
The rod iron 3 in top of the plate portion, one end pass through the annulus 21 of adjustable bolt and are pinned with extruding anchor head 5, and the other end is through web bottom
Anchorage 121 is simultaneously latched with extruding anchor head 5, then carry out tensioning in the same way, forms " I " type hoop；
In hardened system outer side covers hardened system.
As shown in Fig. 2 in step A, respectively open up row's bolt hole on two pairs of angle steel 1 along its length, and
By two pairs of angle steel 1, by its another side, level is packed near the both sides top board bottom of web respectively；By 2 points of some adjustable bolts
Yi Yiduiying not be locked on four row's bolts hole of two pairs of angle steel, one end with annulus 21 of each adjustable bolt 2 is arranged down, and
A nut 7 is set in 1 top spiral shell of angle steel, can be by twisting the nut 7 on adjustable bolt 2 upwards to steel wire rope 4 in reinforcing process
Apply prestressing force.
In step B, using chemical bolt method anchor portion anchorage 121, specifically, in concrete box girder L webs to be reinforced
The embedding two rows chemical bolt 6 of inside bottom interval, anchors a steel plate 111 by chemical bolt 6, then by anchorage 121
It is fixed on anchor plate 111, wherein, on anchorage 121, interval opens up multiple rows of trapezoidal groove, for buckle steel cord ends anchor head
5 so as to anchoring to steel wire rope 4.
As shown in Fig. 2 in step C, fixing steering rod iron 3 using chemical bolt method, specifically, opening up on rod iron 3
The moderate installing hole of one trestle column, opens up corresponding chemical bolt installing hole in web to be reinforced and wing plate intersection, will tree
Fat pierces screw rod 61 after inserting installing hole, then 3 level of rod iron is fixed at the top of web with nut 7, and leaves certain space
Steel wire rope 4 is allowed to pass through.
In step D, treat that the web outside of reinforced concrete beam L opens up row's slant notch, the notch length is reinforcing steel
The length of lath 10, does not extend to top board, and the width and depth of the notch are respectively the width and thickness of strengthening steel slab bar, notch
Depth is not passed through web concrete protective layer.Preferably, oblique reinforcing steel plate strip 10 is bonded in notch, is used respectively up and down
Chemical bolt 6 and steel plate washer 9 are anchored by chemical bolt 6.Preferably, there is smooth chamfering 91 in the bending place of steel plate washer 9, keep away
Exempt from the abrasion to steel wire rope 4, and concrete is played a protective role.
In step D, the oblique steel plate strip 10 for being embedded in box beam L web to be reinforced also can be replaced with screw rod, when oblique using screw rod
When embedded reinforcing, first tilting screw rod is welded to steel plate press strip and steel plate washer 9 with level up and down respectively, then in coagulation to be reinforced
The corresponding position of web outside screw rod of native beam L opens up slant notch, length of the notch length for screw rod, does not extend to top
Plate, width of rebate and depth are screw diameter size, and depth of rebate is not passed through web concrete protective layer, will finally be welded on one
The steel plate press strip that rises, screw rod, steel plate washer 9 are directly installed on and treat reinforcement L web outsides, and steel plate press strip is anchored with chemical bolt,
Bottom steel plate washer 9 borrows the pre-tensioning of steel wire rope 4 and is tightly attached on base plate.
Before step A, treatment is implemented to beams of concrete L, implement to fall in the relevant position at the left and right beam angle of lower end
Angle is processed.In reinforcing process, need to blow down the dust of duct or notch inwall, cleaning after the completion of the operation such as chamfering, drilling and fluting
After the completion of using acetone clean.
In step F, guard system adopt common protection mortar, and constructed using spurt method.
These are only preferred embodiment of the present utility model, all impartial changes done with this utility model right
Change and modify, the scope of this utility model claim all should be belonged to.
The above is only preferred implementation of the present utility model, it should be pointed out that：For the ordinary skill people of the art
For member, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and moisten
Decorations also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of prestress rope Shear Strengthening concrete box girder, it is characterised in that：Including adding on concrete box girder
Gu system, hardened system include some steel plate strips, each steel plate strip is oblique embedded and is anchored in box girder web both sides；Also include four
Bar angle steel, four angle steel are installed in box beam or so wing plate bottom and inner side top board bottom by respective wherein level respectively
Portion, respectively offers row's bolt hole along its length on another side, some adjustable bolts are correspondingly locked in each angle one by one
In the bolt hole of steel；In the web outside of concrete box girder, there is tensioning around lintel bottom on steel wire rope and two ends are through located at adjustable
Annulus on bolt is anchored, and forms steel wire cable clamp.
2. a kind of prestress rope Shear Strengthening concrete box girder according to claim 1, it is characterised in that：Wherein,
Web outside opens up row's slant notch, length of the notch length for strengthening steel slab bar, and does not extend to top board, the notch
Width and depth be respectively the width and thickness of strengthening steel slab bar, strengthening steel slab bar is respectively arranged in each notch.
3. a kind of prestress rope Shear Strengthening concrete box girder according to claim 2, it is characterised in that：Wherein,
A plurality of steel plate strip is pasted in notch respectively, and the upper and lower ends anchoring of each steel plate strip.
4. a kind of prestress rope Shear Strengthening concrete box girder according to claim 1, it is characterised in that：Wherein,
Respectively offer on one side of four angle steel installing hole and by chemical bolt be horizontally installed to treat reinforcement wing plate or so bottom and
Treat top board bottom on the inside of reinforcement.
5. a kind of prestress rope Shear Strengthening concrete box girder according to claim 1, it is characterised in that：Wherein,
Web and wing plate intersection or so are respectively opened up, for solid
Fixed four steering rod irons.
6. a kind of prestress rope Shear Strengthening concrete box girder according to claim 5, it is characterised in that：Wherein,
Steel wire rope bypasses the steel plate washer of rod iron and bottom edge at the top of web, annulus of the two ends through adjustable bolt, and uses extruding anchor
Head is pinned, and the nut for then rotating adjustable bolt carries out tensioning to steel wire rope, forms " U " type hoop.
7. a kind of prestress rope Shear Strengthening concrete box girder according to claim 5, it is characterised in that：Wherein,
Steel wire rope bypasses the rod iron at the top of web, and one end passes through the annulus of adjustable bolt and pinned with extruding anchor head, and the other end passes through abdomen
The anchorage of plate bottom is simultaneously latched with extruding anchor head, and the nut for then rotating adjustable bolt carries out tensioning to steel wire rope, forms " I " type
Hoop.
8. a kind of prestress rope Shear Strengthening concrete box girder according to claim 1, it is characterised in that：Wherein,
Two panels web inside bottom, anchors a steel plate strip with chemical bolt respectively, and rope ground tackle is fixed in steel plate strip.
9. a kind of prestress rope Shear Strengthening concrete box girder according to claim 1, it is characterised in that：Wherein,
Protection mortar is also set up on the outside of hardened system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546393.0U CN206052571U (en) | 2016-06-07 | 2016-06-07 | A kind of prestress rope Shear Strengthening concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546393.0U CN206052571U (en) | 2016-06-07 | 2016-06-07 | A kind of prestress rope Shear Strengthening concrete box girder |
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| Publication Number | Publication Date |
|---|---|
| CN206052571U true CN206052571U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620546393.0U Withdrawn - After Issue CN206052571U (en) | 2016-06-07 | 2016-06-07 | A kind of prestress rope Shear Strengthening concrete box girder |
Country Status (1)
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| CN (1) | CN206052571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887704A (en) * | 2016-06-07 | 2016-08-24 | 东南大学 | Prestressed steel wire rope anti-shearing reinforced concrete box girder and reinforcing method thereof |
-
2016
- 2016-06-07 CN CN201620546393.0U patent/CN206052571U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887704A (en) * | 2016-06-07 | 2016-08-24 | 东南大学 | Prestressed steel wire rope anti-shearing reinforced concrete box girder and reinforcing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20180717 |