CN104863379A - Strengthening member for special reinforced concrete beam, effective strengthening method and application thereof - Google Patents
Strengthening member for special reinforced concrete beam, effective strengthening method and application thereof Download PDFInfo
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- CN104863379A CN104863379A CN201510235693.7A CN201510235693A CN104863379A CN 104863379 A CN104863379 A CN 104863379A CN 201510235693 A CN201510235693 A CN 201510235693A CN 104863379 A CN104863379 A CN 104863379A
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Abstract
The invention discloses a strengthening member for a special reinforced concrete beam, an effective strengthening method and application thereof. The strengthening method for the special reinforced concrete beam comprises following steps: step 1, determining the position of reinforcement; step 2, measuring the geometric profile of the beam; step 3, producing a groove-profile steel beam; step 4, making bolted connection; S5, making beam and column connection; step 6, making grouting connection.The reinforced concrete beam is effectively strengthened in working conditions featuring lack of strengthening space below the beam and continuous oscillation.
Description
Technical field
The present invention relates to reinforced concrete beam reinforcing technique field, disclose a kind of special reinforced concrete beam strengthening member and effectively reinforcement means and application thereof especially.
Background technology
The beam that reinforced concrete beam Reinforced Concrete Materials is made.Reinforced concrete beam form is varied, and be supporting member the most basic in the engineering structures such as building construction, bridge construction, range of application is extremely wide.Reinforced concrete beam both can be made isolated beam, also can form overall beam-board-like superstructure with armored concrete slab, or form overall single or multiple lift framework with reinforced concrete post.Reinforced concrete beam, by its section form, can be divided into rectangular beam, tee girder, i beam, channel beam and box-girder.By its construction method, Cast-in-situ Beam, precast beam and prefabrication cast-in-place superposed beam can be divided into.By its arrangement of reinforcement type, reinforced concrete beam and prestressed concrete beam can be divided into.By its structure diagram, simply supported beam, continuous beam, semi girder, girder and secondary beam etc. can be divided into.
Reinforced concrete beam due to design mistake, working vessels, material are defective, structure overload damages, construction-contingent reason is damaged and function change etc. all needs reinforcement.For general reinforced concrete beam, existing Scheme of Strengthening mainly contains: the method such as section-increased method, dead burning plate method, sticky carbon fiber method, sticky glass fiber processes.Such as, Chinese patent CN102979316A discloses a kind of method of pasting bamboo clappers reinforcement of rc beam, (top is pressurized edge to its force modes according to freely-supported reinforced concrete beam, bottom is tension edge), improve its supporting capacity at reinforced concrete beam tension edge by pasting bamboo clappers.Patent CN103603509A discloses and a kind ofly adopts carbon cloth reinforced reinforced concrete beam and reinforcement means, comprise reinforced concrete beam, the bottom tension face of described reinforced concrete beam is provided with the carbon cloth evenly pasted with it and be integrated, described carbon cloth two ends are connected with steel plate, steel plate is provided with steel plate connecting hole, and described steel plate is connected with the two ends of reinforced concrete beam by steel plate connecting hole, nut and chemical bolt.Handan, Handan City three construction work Co., Ltd discloses a kind of reinforced concrete beam bonded steel structure reinforced construction method, it is by dead burning plate, sticky U-shaped hoop plate, plants hogging moment reinforcing rib, plants integrated application that bolt measure such as to fix and solve the mass defect that beam support place hogging moment Lack of support causes well.Patent CN202187571U discloses a kind of external transverse prestressed steel reinforced concrete beam, comprise reinforced concrete beam, the upper surface of described reinforced concrete beam is provided with arm-tie, the soffit of described reinforced concrete beam is provided with U-shaped plate, and described arm-tie and U-shaped plate are strained by bolt and be connected thus fastening steel Concrete Beam Reinforced.Patent CN102251683A discloses a kind of reinforced concrete beam strengthening member, comprises inverted U screw rod, angle steel, billet I and locking nut; Angle steel is two, is pasted onto the base angle of beam respectively; Inverted U screw rod is passed down through floor, and its two ends are fixed on by locking nut on billet I at the base angle of beam; Billet I is positioned at the below of angle steel and is pressed on angle steel.
Special steel Concrete Beam Reinforced, refers to and is often hit by block stone the reinforced concrete beam pounded in process of production, lacks and reinforce space under its beam, beam be provided with important can not out-of-work power-producing equipment.Above-mentioned existing reinforcement means all cannot reinforce special steel Concrete Beam Reinforced.As section-increased method, due under beam without reinforcing space, and beam is ceaselessly vibrating (because power-equipment can not interrupt run), and new and old part can not be linked together, so this method is inapplicable.Dead burning plate method is false, and beam is ceaselessly vibration cannot affixing steel plate, and this method is also inapplicable.As a same reason, sticky carbon fiber method, sticky glass fiber processes all cannot be applied.Under this operating mode of special steel Concrete Beam Reinforced, the reinforcement means of prior art cannot complete the reinforcing of special steel Concrete Beam Reinforced, is badly in need of a kind of effective reinforcement means of new special steel Concrete Beam Reinforced.
Summary of the invention
The object of the present invention is to provide a kind of strenthening member of special steel Concrete Beam Reinforced, can be applicable to the reinforcing of reinforced concrete beam under coal conveyor belt, it adopts, and the reinforced concrete post at grooved girder steel and special steel Concrete Beam Reinforced and two ends thereof is special to be connected, and achieves effective reinforcing of special steel Concrete Beam Reinforced.
Another object of the present invention is the effective reinforcement means providing a kind of special steel Concrete Beam Reinforced, it is connected with special steel reinforced concrete beam bolt by grooved girder steel of special construction and slip casting is solidified and connected, overcome the defect that prior art is difficult under the vibrative operating mode of power-equipment continuous firing reinforce on beam, under realizing beam, lack the effective reinforcing under reinforcing space, sustained vibration operating mode.
Another object of the present invention be the strenthening member that a kind of special steel Concrete Beam Reinforced is provided under coal conveyor belt reinforced concrete beam reinforcing in application.
The invention provides a kind of strenthening member of special steel Concrete Beam Reinforced, lack the space of reinforcing under its beam, Qi Liangshang is provided with the power-equipment of continuous firing, comprises
Special steel Concrete Beam Reinforced, its soffit of girder offers logical eye,
Reinforced concrete post, is located at the two ends of special steel Concrete Beam Reinforced, and its medial surface is coated with steel plate,
Grooved girder steel, integral coating on special steel Concrete Beam Reinforced, and is connected with the steel plate of reinforced concrete post medial surface, the web of grooved girder steel is offered the eyelet corresponding with the logical eye on special steel Concrete Beam Reinforced, the base plate of grooved girder steel offers injected hole,
Bolt, special steel Concrete Beam Reinforced and grooved girder steel link together by the eyelet that the logical eye offered through soffit of girder place and U-steel web are offered, and
Slip casting, flows in the space of grooved girder steel and special steel Concrete Beam Reinforced.
Preferably, the steel plate that reinforced concrete post medial surface is coated is grooved steel plate.
Preferably, the eyelet above-mentioned U-steel web offered is circular hole.
Preferably, slip casting is one in cement, accelerating admixture, expansion agent or its combination.
The present invention also provides a kind of effective reinforcement means of special steel Concrete Beam Reinforced, comprises the steps:
Step 1, measures reinforcement bar arrangement in beam:
Measure the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced; The reinforcement location staggered in it, offers logical eye at soffit of girder place, for holding connecting bolt;
Step 2, measure beam geometric shape:
Measure the external form geometric parameter of special steel Concrete Beam Reinforced to be reinforced;
Step 3: make grooved girder steel:
Make grooved girder steel according to the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced and external form geometric parameter, its base plate offers the injected hole for injecting cementing agent, and the eyelet corresponding with the logical eye on reinforced concrete beam to be reinforced;
Step 4: bolt connects:
The special steel Concrete Beam Reinforced that grooved girder steel is coated to be reinforced, the logical eye that bolt is offered through its soffit of girder place is connected with the eyelet that U-steel web is offered;
Step 5: beam-to-column joint:
The coated steel plate of medial surface of the two ends reinforced concrete post of special steel Concrete Beam Reinforced to be reinforced, more described steel plate is reliably connected together with grooved girder steel;
Step 6: slip casting connects:
By the injected hole that grooved girder steel base plate is offered, to grooved girder steel and slip casing by pressure in the space of reinforced concrete beam to be reinforced.
Preferably, the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced comprises the position of lower rebar in beam, upper reinforcement, bent-up bar and stirrup, quantity, diameter.
Preferably, the steel plate that reinforced concrete post medial surface is coated is grooved steel plate.
Preferably, the eyelet above-mentioned U-steel web offered is circular hole.
Preferably, the slip casting of slip casing by pressure is one in cement, accelerating admixture, expansion agent or its combination.
The invention provides the application in the reinforcing of strenthening member reinforced concrete beam under coal conveyor belt of above-mentioned special steel Concrete Beam Reinforced.
Beneficial effect of the present invention has: be connected with special steel reinforced concrete beam bolt by the grooved girder steel of special construction and slip casting is solidified and connected, overcome the defect that prior art is difficult under the vibrative operating mode of power-equipment continuous firing reinforce on beam, under realizing beam, lack the effective reinforcing under reinforcing space, sustained vibration operating mode.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of the strenthening member of special steel Concrete Beam Reinforced of the present invention.
Fig. 2 is the strenthening member A-A sectional view of special steel Concrete Beam Reinforced of the present invention.
In figure, 1-concrete beam, 2-concrete column, 3-grooved girder steel, 4-bolt, 5-slip casting, 6-injected hole.
Detailed description of the invention
Can be well understood to the present invention further by specific embodiments of the invention given below and comparing embodiment, but they not limitation of the invention.The part do not described in detail in specific embodiment and comparing embodiment adopts prior art, known technology means and industry standard to obtain.
Special steel Concrete Beam Reinforced in the present invention refers to and is often hit by block stone (such as coal cinder, sillar) reinforced concrete beam pounded in process of production, lacks and reinforce space under its beam, beam be provided with important can not out-of-work power-producing equipment.
Please refer to accompanying drawing 1 to 2, the strenthening member of special steel Concrete Beam Reinforced of the present invention, lacks the space of reinforcing under its beam, Qi Liangshang is provided with the power-equipment of continuous firing, comprises
Special steel Concrete Beam Reinforced 1, its soffit of girder offers logical eye,
Reinforced concrete post 2, is located at the two ends of special steel Concrete Beam Reinforced 1, and its medial surface is coated with steel plate,
Grooved girder steel 3, integral coating is on special steel Concrete Beam Reinforced 1, and be connected with the steel plate of reinforced concrete post 2 medial surface, the web of grooved girder steel is offered the eyelet corresponding with the logical eye on special steel Concrete Beam Reinforced 1, the base plate of grooved girder steel offers injected hole 6;
Bolt 4, special steel Concrete Beam Reinforced 1 and grooved girder steel 3 link together by the eyelet that the logical eye offered through soffit of girder place and U-steel web are offered, and
Slip casting 5, flows into grooved girder steel 3 with the space of special steel Concrete Beam Reinforced 1 by injected hole 6.
Accordingly, its as follows method realize the reinforcing of special steel Concrete Beam Reinforced:
(1) position, the external form geometric parameter such as size, absolute altitude of special steel Concrete Beam Reinforced to be reinforced accurately is measured;
(2) reinforcement parameters such as reinforcing bar (comprising beam lower rebar, upper reinforcement, bent-up bar and stirrup) position, quantity, diameter in special steel Concrete Beam Reinforced to be reinforced are measured with reinforcing bar survey meter;
(3) according to above two input information, arrangement of reinforcement in special steel Concrete Beam Reinforced position to be reinforced, profile and beam is drawn;
(4) determine according to arrangement of reinforcement in the position of special steel Concrete Beam Reinforced to be reinforced, external form and beam the position getting through eye at soffit of girder place, and be plotted on this figure accurately; Designing points is mainly: on the soffit of girder, stagger stirrup in beam and bent-up bar in the position of logical eye, and leading to eye spacing can be identical with stirrup spacing.
(5) design and make grooved girder steel, perforating on this U-steel web, the logical eye position consistency on its position and reinforced concrete beam, and beat injected hole on flute profile girder steel base plate;
(6) box steel beam is supported on special steel Concrete Beam Reinforced place to be reinforced by design attitude, and with M18 bolt, the two is linked together; Other modes can certainly be adopted to connect, but bolt connection is the reliable method of attachment of most convenient;
(7) at the coated grooved steel plate of reinforced concrete post medial surface at special steel Concrete Beam Reinforced two ends to be reinforced, and the two is reliably connected together, then this coated grooved steel plate is reliably connected together with flute profile girder steel;
(8) with Optimization grouting serous fluids such as cement, accelerating admixture, expansion agents;
(9) slip casing by pressure in the space of grooved girder steel with reinforced concrete beam to be reinforced.
Adopt above-mentioned reinforced concrete beam reinforcement means, successful Application in reinforced concrete beam reinforcing under Shanxi Lu'an Bureau of Mine stone Ge joint ore deposit obtains belt conveyer: lack under belt conveyer beam and reinforce space, on beam in the not out-of-work situation of equipment, successfully realize the reinforcing of reinforced concrete beam.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (10)
1. a strenthening member for special steel Concrete Beam Reinforced, lacks the space of reinforcing under its beam, Qi Liangshang is provided with the power-equipment of continuous firing, it is characterized in that: comprise
Special steel Concrete Beam Reinforced, its soffit of girder offers logical eye,
Reinforced concrete post, is located at the two ends of special steel Concrete Beam Reinforced, and its medial surface is coated with steel plate,
Grooved girder steel, integral coating on special steel Concrete Beam Reinforced, and is connected with the steel plate of reinforced concrete post medial surface, the web of grooved girder steel is offered the eyelet corresponding with the logical eye on special steel Concrete Beam Reinforced, the base plate of grooved girder steel offers injected hole,
Bolt, special steel Concrete Beam Reinforced and grooved girder steel link together by the eyelet that the logical eye offered through soffit of girder place and U-steel web are offered, and
Slip casting, flows in the space of grooved girder steel and special steel Concrete Beam Reinforced.
2. the strenthening member of special steel Concrete Beam Reinforced according to claim 1, is characterized in that: the coated steel plate of reinforced concrete post medial surface is grooved steel plate.
3. the strenthening member of special steel Concrete Beam Reinforced according to claim 1, is characterized in that: the eyelet that U-steel web is offered is circular hole.
4. the strenthening member of special steel Concrete Beam Reinforced according to claim 1, is characterized in that: described slip casting is one in cement, accelerating admixture, expansion agent or its combination.
5. an effective reinforcement means for special steel Concrete Beam Reinforced, is characterized in that: comprise the steps:
Step 1, measures reinforcement bar arrangement in beam:
Measure the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced; The reinforcement location staggered in it, offers logical eye at soffit of girder place, for holding connecting bolt;
Step 2, measure beam geometric shape:
Measure the external form geometric parameter of special steel Concrete Beam Reinforced to be reinforced;
Step 3: make grooved girder steel:
Make grooved girder steel according to the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced and external form geometric parameter, its base plate offers the injected hole for injecting cementing agent, and the eyelet corresponding with the logical eye on reinforced concrete beam to be reinforced;
Step 4: bolt connects:
The special steel Concrete Beam Reinforced that grooved girder steel is coated to be reinforced, the logical eye that bolt is offered through its soffit of girder place is connected with the eyelet that U-steel web is offered;
Step 5: beam-to-column joint:
The coated steel plate of medial surface of the two ends reinforced concrete post of special steel Concrete Beam Reinforced to be reinforced, more described steel plate is reliably connected together with grooved girder steel;
Step 6: slip casting connects:
By the injected hole that grooved girder steel base plate is offered, to grooved girder steel and slip casing by pressure in the space of reinforced concrete beam to be reinforced.
6. effective reinforcement means according to claim 5, is characterized in that: the reinforcement parameter in special steel Concrete Beam Reinforced to be reinforced comprises the position of lower rebar in beam, upper reinforcement, bent-up bar and stirrup, quantity, diameter.
7. the strenthening member of special steel Concrete Beam Reinforced according to claim 5, is characterized in that: the coated steel plate of reinforced concrete post medial surface is grooved steel plate.
8. the strenthening member of special steel Concrete Beam Reinforced according to claim 5, is characterized in that: the eyelet that U-steel web is offered is circular hole.
9. effective reinforcement means according to claim 5, is characterized in that: slip casting is one in cement, accelerating admixture, expansion agent or its combination.
10. the application in the reinforcing of reinforcement means reinforced concrete beam under coal conveyor belt of the strenthening member of special steel Concrete Beam Reinforced according to any one of claim 1 to 4 or the special steel Concrete Beam Reinforced according to any one of claim 5 to 9.
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| CN201510235693.7A CN104863379B (en) | 2015-05-11 | 2015-05-11 | Special reinforced concrete beam strengthening member and its effective reinforcement means and application |
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| CN106382015A (en) * | 2016-10-13 | 2017-02-08 | 浙江绿城建筑设计有限公司 | Anti-seismic overlapping structure used for existing-structure large-span stressed beam reinforcement and construction method |
| CN106437191A (en) * | 2016-10-12 | 2017-02-22 | 广西大学 | Special-shaped reinforcement device for concrete beam and construction method of reinforcement device |
| CN109372281A (en) * | 2018-10-30 | 2019-02-22 | 徐州工程学院 | A method of utilizing prefabricated TRC plate reinforcement and repair concrete component |
| CN116397922A (en) * | 2023-04-12 | 2023-07-07 | 兰州有色冶金设计研究院有限公司 | Sliding type cavity pressing and injecting device and method for forming plug pin film on surface of reinforced concrete beam |
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| CN116397922B (en) * | 2023-04-12 | 2023-09-08 | 兰州有色冶金设计研究院有限公司 | Sliding type cavity pressing and injecting device and method for forming plug pin film on surface of reinforced concrete beam |
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