CN103953202A - Reinforcing device and reinforcing method of prestressed steel wire rope of reinforced concrete girder - Google Patents
Reinforcing device and reinforcing method of prestressed steel wire rope of reinforced concrete girder Download PDFInfo
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- CN103953202A CN103953202A CN201410066292.9A CN201410066292A CN103953202A CN 103953202 A CN103953202 A CN 103953202A CN 201410066292 A CN201410066292 A CN 201410066292A CN 103953202 A CN103953202 A CN 103953202A
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Abstract
The invention discloses a reinforcing device and a reinforcing method of a prestressed steel wire rope of a reinforced concrete girder. The reinforcing device is fixedly arranged on the reinforced concrete girder and mainly comprises two angle irons, the steel wire rope and a plurality of adjustable bolts, wherein the two angle irons are horizontally and fixedly arranged on the left girder side and the right girder side of the concrete girder through the corresponding sides of the two angle irons, and a row of bolt holes are respectively formed in the other side of each of the two angle irons along the length direction of the two angle irons; rings are all arranged on the adjustable bolts, the adjustable bolts are respectively and correspondingly locked in the bolt holes of the two angle irons one to one in an adjustable manner, the steel wire rope is coiled between the rings of the adjustable bolts of the two angle irons in an overstep zigzag manner so as to form a plurality of groups of transverse [-shaped reinforcing ribs, which are tensed to bypass the bottom of the concrete girder and are arranged in parallel in sequence, and the two free ends of the steel wire rope are respectively tensed and anchored by an aluminum fastener and the adjacent transverse [-shaped reinforcing ribs. In comparison with the prior art, the reinforcing device has the advantages of convenience for construction, excellent reinforcing effect, excellent shear behavior and high applicability.
Description
Technical field
The present invention relates to reinforced concrete beam reinforcing technique field, be specifically related to a kind of reinforced concrete beam bracing means and method thereof, adopt prestress rope to reinforce to promote native beam shear behavior.
Background technology
Existing Shearing Reinforcement of Steel Concrete Beam technology mainly contains increasing section reinforcing method, outer sticky reinforcement method of steel shapes, stickup fibrous composite reinforcing method, affixing steel plate reinforcement method, setting support reinforcing method and steel wire mesh sheet-polymer mortar reinforcing method etc.There is following problem in existing reinforcement means: between (1) reinforcement material and original member, have stress hysteresis effect, co-operation ability is poor, greatly affects consolidation effect; (2) reinforcement material end anchorage length is inadequate, and the stripping damage of anchored end easily occurs; (3) increase the sectional dimension of original member, impact sight and use.The problems referred to above that exist for current Shearing Reinforcement of Steel Concrete Beam method, the inventor furthers investigate a kind of new easy construction of rear proposition, consolidation effect excellence, superior reinforced concrete beam prestress rope bracing means and the method thereof of shear behavior.
Summary of the invention
The object of the present invention is to provide a kind of reinforced concrete beam prestress rope bracing means, there is compared to existing technology the advantages such as construction is convenient, consolidation effect is excellent, shear behavior is superior and applicability is strong.
Another object of the present invention is to provide a kind of reinforced concrete beam prestress rope reinforcement means, in like manner there is the advantages such as construction is convenient, consolidation effect is excellent, shear behavior is superior and applicability is strong.
In order to reach above-mentioned purpose, solution of the present invention is:
A reinforced concrete beam prestress rope bracing means, is fixedly mounted on concrete beam, mainly comprises two angle steel, a wire rope and some adjustable bolts; Described two angle steel are packed in the left and right beam side of described concrete beam by its one side level respectively, respectively offer along its length row's bolt hole on the another side of these two angle steel; On described some adjustable bolts, be equipped with annulus, these some adjustable bolts respectively correspondingly adjustable lock be located in the bolt hole of described two angle steel, described wire rope is wound around by the cranky mode of lattice more some groups of " Qian " type rinforcement bars that are arranged in parallel successively that form at the bottom of having tensioning to walk around described concrete beam beam between the annulus of described adjustable bolt separately at described two angle steel, and two free ends of described wire rope adopt respectively " Qian " type rinforcement bar described in aluminium fastener and adjoining to carry out tensioning anchoring.
Described aluminium fastener respectively tensioning is anchored at position at the bottom of the beam of described concrete beam.
Described in each, on adjustable bolt, all spiral shell is provided with a nut of being convenient to regulate this adjustable bolt, and this nut and described annulus lay respectively at two side positions of the another side of described angle steel.
Described two angle steel row's bolt hole separately is all equidistant arrangement, and this two rows bolt hole is left and right just corresponding setting one by one.
A reinforced concrete beam prestress rope reinforcement means, comprises following step:
1) angle steel is processed and is installed: prepare two angle steel, respectively offer along its length row's bolt hole on one side of these two angle steel, these two angle steel are packed in the left and right beam side of concrete beam by its another side level;
2) adjustable bolt is installed: prepare the adjustable bolt of some band annulus, by these some adjustable bolts, respectively correspondingly on the adjustable two row's bolts hole that are arranged in described two angle steel, described in each, one end with annulus of adjustable bolt arranges down;
3) wire cable strengthening is wound around: prepare a wire rope and two groups of aluminium fasteners, first one end of described wire rope is adopted to the anchoring of one group of aluminium fastener after the annulus through an end adjustable bolt on angle steel described in, afterwards described wire rope is wound to described angle steel the other end by the cranky mode of lattice more between the annulus of adjustable bolt separately at described two angle steel, form and have some groups of " Qian " type rinforcement bars that are arranged in parallel successively at the bottom of described concrete beam beam is walked around in preliminary tensioning, the other end of described wire rope is by another group aluminium fastener anchoring;
4) wire rope prestressed stretch-draw: adjustablely up turn adjustable bolt described in each on described two angle steel described wire rope is implemented to prestressed stretch-draw, complete concrete beam prestress rope and reinforce and implement.
Described 1) in step, described two angle steel row's bolt hole separately is all equidistant arrangement, and this two rows bolt hole is left and right just corresponding setting one by one.
Described 1) in step, respectively offer installing hole on the another side of two angle steel, on two curb girders of corresponding concrete beam, respectively offer suitable boring, described two angle steel are realized Matching installation by chemical anchor bolts to installing hole and borehole anchorage.
Described 1) before step, reinforced concrete beam is implemented to top layer and process: the position reinforcing at need is implemented rendering layer and peeled off and carry out snap the line location, implements chamfered afterwards in the relevant position, beam bight of lower end.
Described 2) in step, described in each, on adjustable bolt, all spiral shell is provided with a nut of being convenient to regulate this adjustable bolt, and this nut and described annulus lay respectively at two side positions of the another side of described angle steel.
Described 3), in step, described two groups of aluminium fasteners respectively tensioning are anchored at position at the bottom of the beam of described concrete beam.
Adopt after such scheme, a kind of reinforced concrete beam bracing means of the present invention and method thereof, be with respect to the beneficial effect of prior art:
One, in reinforcing, only adopt single wire rope to get over lattice and be wound around, and by adjustable bolt, wire rope is applied to prestressed stretch-draw, without adopting special stretch-draw equipment, construct convenient, greatly improved efficiency of construction; And adopted prestressing technique, and can effectively avoid stress hysteresis effect, anchoring is reliable, improves consolidation effect;
Two, in reinforcing, only need the both ends of single wire rope to implement anchorings by two groups of aluminium fasteners, avoided in existing construction method, many wire rope being implemented the loaded down with trivial details step of anchorings, greatly improved efficiency of construction;
Three, the two ends of wire rope preferably can be at the bottom of beam position implement anchoring, overcome and existingly can only when beam side anchor is solid, may have been cut the drawback of inefficacy;
Four, in processing the position of two angle steel be preferably arranged in beam side by tip position, wire rope is pressed close to beam body, adjustable bolt moderate length, and consolidation effect is obvious, applicable to the Shear Strengthening with floor bar concrete beam, the while is applicable to the reinforcing of the less reinforced concrete beam of deck-molding.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the rear elevation of Fig. 1;
Fig. 4 be in Fig. 2 A-A to cut-away view.
Label declaration
Angle steel 1 installing hole 11
Bolt hole 12 adjustable bolts 2
Annulus 21 wire rope 3
Aluminium fastener 4 chemical anchor bolts 5
Nut 6 concrete beam L
The specific embodiment
Below in conjunction with the drawings and specific embodiments, this case is described in further detail.
The present invention relates to a kind of reinforced concrete beam prestress rope bracing means, be fixedly mounted on concrete beam L upper, as Figure 1-4, bracing means mainly comprises two angle steel 1, wire rope 3 and some adjustable bolts 2.
Described two angle steel 1 respectively by its on one side level be packed in the left and right beam side of concrete beam L, be preferably packed in beam side by apical position (referring to Fig. 1).The mode that is fixedly mounted with of angle steel 1 has various ways, specifically provide an embodiment, article two, on one side of angle steel 1, respectively offer several installing holes 11, on two curb girders of corresponding concrete beam L, offer several suitable boring (not shown)s, article two, angle steel 1 mates anchoring by 5 pairs of installing holes 11 of chemical anchor bolts and boring, realizes the location and installation on concrete beam L.
Article two, on the another side of angle steel 1, respectively offer along its length row's bolt hole 12, it is adjustable up and down that the interior spiral shell of every bolt hole 12 is provided with the relative bolt hole 12 of an adjustable bolt 2(with annulus 21), the annulus 21 of each adjustable bolt 2 arranges down for wire rope 3 and runs through.On adjustable bolt 2, spiral shell is provided with a nut 6 that is positioned at angle steel 1 top, and this nut 6 and annulus 21 lay respectively at two side positions of the another side of angle steel 1, and the tightness by the 6 pairs of wire rope 3 of nut on adjustable bolt 2 in reinforcing process regulates.Provide in embodiment, on adjustable bolt 2, be positioned at angle steel 1 lower position and be provided with equally nut 6.Have again, preferably, described two angle steel 1 in beam side, be left and right be oppositely arranged, on two angle steel 1 separately one row bolt hole be all equidistant arrangement, like this two row bolts hole is left and right just corresponding setting one by one.
Wire rope 3 two angle steel 1 separately 21 of the annulus of adjustable bolt 2 by the cranky mode of lattice more, be wound around.Specifically as shown in Figure 1, the annulus 21 of the adjustable bolt 2 on one angle steel 1 is used A1, B1, C1 successively ... order indicates, the annulus 21 of the adjustable bolt 2 on another angle steel 1 is used A4, B4, C4 successively ... order indicates, and two Liang Jiao at the bottom of the beam of concrete beam L are to application A2, B2, C2 ... with A3, B3, C3 ... order indicates.Wire rope 3 more lattice are cranky be wound up as (A1-A2-A3-A4)-(B4-B3-B2-B1)-(C1-C2-C3-C4)-(...), so form and have some groups of " Qian " type rinforcement bars that are arranged in parallel successively at the bottom of concrete beam L beam is walked around in tensioning.
Two free ends of described wire rope 3 adopt respectively one group of aluminium fastener 4 to carry out tensioning anchoring, and 4 pairs of wire rope 3 free ends of aluminium fastener and adjoining one above-mentioned " Qian " type rinforcement bar fasten side by side and realize tensioning anchoring particularly.Preferably, two groups of aluminium fasteners 4 respectively tensioning be anchored at position at the bottom of the beam of concrete beam L.
Reinforcement means corresponding to above-mentioned reinforced concrete beam prestress rope bracing means, mainly comprises following step:
1) angle steel is processed and is installed: prepare two angle steel 1, respectively offer along its length row's bolt hole 12 on one side of these two angle steel 1, these two angle steel 1 are packed in the left and right beam side of concrete beam L by its another side level;
2) adjustable bolt is installed: the adjustable bolt 2 of preparing some band annulus 21, by these some adjustable bolts 2 respectively one by one on the corresponding two row's bolts hole 12 that are arranged in two angle steel 1, one end with annulus 21 of each adjustable bolt 2 arranges down, and the relative bolt hole 12 of this each adjustable bolt 2 is adjustable up and down; Annulus 21 and the angle steel 1 of each adjustable bolt 2 should not too be pressed close to, to guarantee that adjustable bolt 2 has enough stretch-draw travel distances;
3) wire cable strengthening is wound around: prepare a wire rope 3 and two groups of aluminium fasteners 4, first one end of wire rope 1 is passed after the annulus 21 of angle steel 1 one end adjustable bolts 2, adopt one group of aluminium fastener 4 anchoring, afterwards wire rope 3 is wound to angle steel 1 the other end at 21 of the annulus of the adjustable bolt separately 2 of two angle steel 1 by getting over the cranky mode of lattice, form and have some groups of " Qian " type rinforcement bars (referring to Fig. 4) that are arranged in parallel successively at the bottom of concrete beam L beam is walked around in preliminary tensioning, the other end of wire rope 3 is by another group aluminium fastener 4 anchorings;
4) wire rope prestressed stretch-draw: adjustable each adjustable bolt 2 up turning on two angle steel 1, so that wire rope 3 is implemented to prestressed stretch-draw, completes concrete beam L prestress rope and reinforce enforcement.
Preferably, described 1) in step, article two, angle steel 1 row's bolt hole separately is all equidistant arrangement, and this two rows bolt hole is left and right just corresponding setting one by one, and its vertical portion, left and right of " Qian " type rinforcement bar that some groups of being wound around formation with this are arranged in parallel successively is just and is oppositely arranged.
After above-mentioned stretch-draw completes, by relevant regulations, carry out the setting of polymer mortar surface layer, in construction, need to adopt the good two-component polymer mortar of adhesive property to wipe one's face, after having constructed, should carry out surface layer maintenance in strict accordance with operation instruction.
Preferably, described 1) in step, article two, on the another side of angle steel 1, adopt chemical anchor bolts and concrete beam L fixed installation, particularly, on the another side of two angle steel 1, respectively offer installing hole 11, on two curb girders of corresponding concrete beam L, respectively offer suitable boring (not shown), two angle steel 1 are realized and being installed by 5 pairs of installing holes of chemical anchor bolts 11 and the anchoring of boring coupling.
Preferably, described 1) before step, concrete beam L is implemented to top layer and process: the position reinforcing at need is implemented rendering layer and peeled off and carry out snap the line location, implements chamfered (being fillet after processing) afterwards in the relevant position at curb girder angle, the left and right of lower end.Preferably, after chamfering and boring complete, employing air compressor blows down the dust of duct and chamfering Liang Bi, has cleared up rear employing acetone and has cleaned duct inwall and chamfering position;
Preferably, described 2) in step, described in each, on adjustable bolt 2, all spiral shell is provided with a nut 6, and this nut 6 and annulus 21 lay respectively at two side positions of the another side of angle steel 1.In step 4), by nut 6 realizations that screw on adjustable bolt 2, wire rope 3 is carried out to prestressed stretch-draw, be convenient to the adjustable effect of adjustable bolt 2, work the tensioning location of strengthening adjustable bolt 2 simultaneously.Provide in embodiment, on adjustable bolt 2, be positioned at angle steel 1 lower position and be provided with equally nut 6.
Preferably, described 3) in step, described two groups of aluminium fasteners 4 respectively tensioning are anchored at position at the bottom of the beam of concrete beam L, can overcome existingly can only when beam side anchor is solid, may be cut the drawback of inefficacy.
The foregoing is only the preferred embodiments of the present invention, all equalizations of doing with the claims in the present invention scope change and modify, and all should belong to the scope of the claims in the present invention.
Claims (10)
1. a reinforced concrete beam prestress rope bracing means, is fixedly mounted on concrete beam, it is characterized in that: mainly comprise two angle steel, a wire rope and some adjustable bolts; Described two angle steel are packed in the left and right beam side of described concrete beam by its one side level respectively, respectively offer along its length row's bolt hole on the another side of these two angle steel; On described some adjustable bolts, be equipped with annulus, these some adjustable bolts respectively correspondingly adjustable lock be located in the bolt hole of described two angle steel, described wire rope is wound around by the cranky mode of lattice more some groups of " Qian " type rinforcement bars that are arranged in parallel successively that form at the bottom of having tensioning to walk around described concrete beam beam between the annulus of described adjustable bolt separately at described two angle steel, and two free ends of described wire rope adopt respectively " Qian " type rinforcement bar described in aluminium fastener and adjoining to carry out tensioning anchoring.
2. a kind of reinforced concrete beam prestress rope bracing means as claimed in claim 1, is characterized in that: described aluminium fastener respectively tensioning is anchored at position at the bottom of the beam of described concrete beam.
3. a kind of reinforced concrete beam prestress rope bracing means as claimed in claim 1, it is characterized in that: described in each, on adjustable bolt, all spiral shell is provided with a nut of being convenient to regulate this adjustable bolt, and this nut and described annulus lay respectively at two side positions of the another side of described angle steel.
4. a kind of reinforced concrete beam prestress rope bracing means as claimed in claim 1, is characterized in that: described two angle steel row's bolt hole separately is all equidistant arrangement, and this two rows bolt hole is left and right just corresponding setting one by one.
5. a reinforced concrete beam prestress rope reinforcement means, is characterized in that, comprises following step:
1) angle steel is processed and is installed: prepare two angle steel, respectively offer along its length row's bolt hole on one side of these two angle steel, these two angle steel are packed in the left and right beam side of concrete beam by its another side level;
2) adjustable bolt is installed: prepare the adjustable bolt of some band annulus, by these some adjustable bolts, respectively correspondingly on the adjustable two row's bolts hole that are arranged in described two angle steel, described in each, one end with annulus of adjustable bolt arranges down;
3) wire cable strengthening is wound around: prepare a wire rope and two groups of aluminium fasteners, first one end of described wire rope is adopted to the anchoring of one group of aluminium fastener after the annulus through an end adjustable bolt on angle steel described in, afterwards described wire rope is wound to described angle steel the other end by the cranky mode of lattice more between the annulus of adjustable bolt separately at described two angle steel, form and have some groups of " Qian " type rinforcement bars that are arranged in parallel successively at the bottom of described concrete beam beam is walked around in preliminary tensioning, the other end of described wire rope is by another group aluminium fastener anchoring;
4) wire rope prestressed stretch-draw: adjustablely up turn adjustable bolt described in each on described two angle steel described wire rope is implemented to prestressed stretch-draw, complete concrete beam prestress rope and reinforce and implement.
6. a kind of reinforced concrete beam prestress rope reinforcement means as claimed in claim 5, it is characterized in that: described 1) in step, described two angle steel row's bolt hole separately is all equidistant arrangement, and this two rows bolt hole is left and right just corresponding setting one by one.
7. a kind of reinforced concrete beam prestress rope reinforcement means as claimed in claim 5, it is characterized in that: described 1) in step, article two, on the another side of angle steel, respectively offer installing hole, on two curb girders of corresponding concrete beam, respectively offer suitable boring, described two angle steel are realized Matching installation by chemical anchor bolts to installing hole and borehole anchorage.
8. a kind of reinforced concrete beam prestress rope reinforcement means as claimed in claim 5, it is characterized in that: described 1) before step, reinforced concrete beam is implemented to top layer to be processed: the position reinforcing at need is implemented rendering layer and peeled off and carry out snap the line location, implements chamfered afterwards in the relevant position, beam bight of lower end.
9. a kind of reinforced concrete beam prestress rope reinforcement means as claimed in claim 5, it is characterized in that: described 2) in step, described in each, on adjustable bolt, all spiral shell is provided with a nut of being convenient to regulate this adjustable bolt, and this nut and described annulus lay respectively at two side positions of the another side of described angle steel.
10. a kind of reinforced concrete beam prestress rope reinforcement means as claimed in claim 5, is characterized in that: described 3) in step, described two groups of aluminium fasteners respectively tensioning are anchored at position at the bottom of the beam of described concrete beam.
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| CN201410066292.9A CN103953202B (en) | 2014-02-26 | 2014-02-26 | A kind of reinforced concrete beam prestress rope bracing means and method thereof |
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| CN201410066292.9A CN103953202B (en) | 2014-02-26 | 2014-02-26 | A kind of reinforced concrete beam prestress rope bracing means and method thereof |
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| 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 |
| CN105937304A (en) * | 2016-05-27 | 2016-09-14 | 上海二十冶建设有限公司 | Reinforcing device for industrial factory building column hoisting and application method thereof |
| CN107165060A (en) * | 2017-04-07 | 2017-09-15 | 华侨大学 | A kind of anti-bend reinforced device of bridge prestress high-strength steel cord |
| WO2017211107A1 (en) * | 2016-06-07 | 2017-12-14 | 东南大学 | Pre-stressed steel wire rope-based flexure- and shear-strengthening concrete t beam, and strengthening method thereof |
| CN108678408A (en) * | 2018-06-02 | 2018-10-19 | 孙语遥 | Reinforced concrete roof beam prestressing force wire rope reinforcing apparatus |
| CN108894123A (en) * | 2018-09-04 | 2018-11-27 | 南京林业大学 | A kind of quick Shear Strengthening box-beam structure of Prestressed U type muscle and method |
| CN109763668A (en) * | 2019-01-24 | 2019-05-17 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | A kind of roof boarding aperture and reperforating method |
| CN111576910A (en) * | 2020-05-13 | 2020-08-25 | 武汉大学 | Self-locking ECC (error correction code) coating reinforced concrete column reinforcing method |
| CN113802474A (en) * | 2021-08-31 | 2021-12-17 | 中国建筑土木建设有限公司 | Half-width bridge beam-slab stabilizing device and construction method for keeping bridge open in half width |
| CN115446977A (en) * | 2022-09-15 | 2022-12-09 | 河南省城乡规划设计研究总院股份有限公司 | Production device and method for reinforcing steel strand net reinforced ECC (error correction code) prefabricated slab for reinforcement and reinforcing method |
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| CN105937304A (en) * | 2016-05-27 | 2016-09-14 | 上海二十冶建设有限公司 | Reinforcing device for industrial factory building column hoisting and application method thereof |
| WO2017211107A1 (en) * | 2016-06-07 | 2017-12-14 | 东南大学 | Pre-stressed steel wire rope-based flexure- and shear-strengthening concrete t beam, and strengthening method thereof |
| 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 |
| CN107165060A (en) * | 2017-04-07 | 2017-09-15 | 华侨大学 | A kind of anti-bend reinforced device of bridge prestress high-strength steel cord |
| CN107165060B (en) * | 2017-04-07 | 2023-03-07 | 华侨大学 | Bridge prestressing force high strength wire rope bending resistance reinforcing apparatus |
| CN108678408B (en) * | 2018-06-02 | 2020-12-08 | 日照市德衡信息技术有限公司 | Reinforced concrete roof beam prestressing force wire rope reinforcing apparatus |
| CN108678408A (en) * | 2018-06-02 | 2018-10-19 | 孙语遥 | Reinforced concrete roof beam prestressing force wire rope reinforcing apparatus |
| CN108894123A (en) * | 2018-09-04 | 2018-11-27 | 南京林业大学 | A kind of quick Shear Strengthening box-beam structure of Prestressed U type muscle and method |
| CN109763668A (en) * | 2019-01-24 | 2019-05-17 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | A kind of roof boarding aperture and reperforating method |
| CN111576910A (en) * | 2020-05-13 | 2020-08-25 | 武汉大学 | Self-locking ECC (error correction code) coating reinforced concrete column reinforcing method |
| CN113802474A (en) * | 2021-08-31 | 2021-12-17 | 中国建筑土木建设有限公司 | Half-width bridge beam-slab stabilizing device and construction method for keeping bridge open in half width |
| CN115446977A (en) * | 2022-09-15 | 2022-12-09 | 河南省城乡规划设计研究总院股份有限公司 | Production device and method for reinforcing steel strand net reinforced ECC (error correction code) prefabricated slab for reinforcement and reinforcing method |
| CN115446977B (en) * | 2022-09-15 | 2023-08-15 | 河南省城乡规划设计研究总院股份有限公司 | Device and method for producing reinforced ECC precast slab by reinforcing steel strand wire mesh and reinforcing method |
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