CN105386409B - Grout-flow-preventing mechanism for anchor end of pre-stressed beam plate and grouting method for pre-stressed beam plate - Google Patents
Grout-flow-preventing mechanism for anchor end of pre-stressed beam plate and grouting method for pre-stressed beam plate Download PDFInfo
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- CN105386409B CN105386409B CN201510796353.1A CN201510796353A CN105386409B CN 105386409 B CN105386409 B CN 105386409B CN 201510796353 A CN201510796353 A CN 201510796353A CN 105386409 B CN105386409 B CN 105386409B
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- cover body
- beam slab
- anchor
- anchor end
- base tube
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Abstract
The invention relates to the technical field of construction of a pre-stressed beam plate and discloses a grout-flow-preventing mechanism for an anchor end of the pre-stressed beam plate. The grout-flow-preventing mechanism comprises a cover body capable of covering the anchor end of the pre-stressed beam plate; the open end of the cover body is connected with a sealed skirt; the sealed skirt is provided with two bolt holes which can be aligned to two threaded holes in an anchor base plate one by one correspondingly, and grouting pipe connecting holes which can be aligned to grouting holes in the pre-stressed beam plate; the closed end of the cover body is provided with air holes and choke plugs for closing the air holes. The grout-flow-preventing mechanism for the anchor end of the pre-stressed beam plate and a grouting method for the pre-stressed beam plate, provided by the invention, have the advantages of preventing secondary anchor sealing, guaranteeing the tightness of grout in a pore channel at the position of the anchor base plate and solving the problem that secondary anchor sealing is required because the grout in the pore channel at the root part of the anchor base plate is not tight after the existing pre-stressed beam plate is molded.
Description
Technical field
The present invention relates to restressed beam slab technical field of construction, more particularly to a kind of anti-slurry flowing machine structure in restressed beam slab anchor end
And restressed beam slab grouting method.
Background technology
During restressed beam slab mortar depositing construction, existing method is to use Fast Setting Cement Slurry（Or gambling stream king）By anchor end steel
Twisted wire is closed, and is started after cement mortar reaches some strength to the slip casting of restressed beam slab duct.It is in Chinese Patent Application No.
2013100658168th, Authorization Notice No. is CN103147400A, entitled " a kind of cast-in-situ box girder bridge web exceeds presstressed reinforcing steel
A kind of grouting method of restressed beam slab is disclosed in the patent documentation of single tension construction method ".Existing restressed beam slab
Have the following disadvantages：Have ignored the serosity in prestressed pore passage slip casting and understand small part from anchorage position（That is anchor end）Steel strand wires seam
Squeeze out in gap and damage the anchor end cement lumps closed, the slurry in anchor plate root position duct is often present after molding
Leakiness phenomenon, and also need to carry out secondary sealing off and covering anchorage, cause steel strand wires Stress Transfer not good, precast beam service life is affected, again
Sealing off and covering anchorage causes construction cost to increase.
The content of the invention
Without the need for secondary sealing off and covering anchorage and the sealing of slurry in the duct at anchor plate place is ensure that the invention provides a kind of
The anti-slurry flowing machine structure in anti-restressed beam slab anchor end and restressed beam slab grouting method of degree, solves existing prestressed girder sheet metal forming
Afterwards there is leakiness phenomenon and also need to carry out secondary sealing off and covering anchorage in the slurry in anchor plate root position duct.
Above technical problem is solved by following technical proposal：A kind of anti-slurry flowing machine structure in restressed beam slab anchor end, bag
The cover body at the anchor end that can cover restressed beam slab is included, the opening of the cover body is connected with sealing shirt rim, in the sealing shirt rim
Be provided with two can correspondingly with anchor plate two screwed holes alignment bolts hole and can be with the note on restressed beam slab
The Grouting Pipe connecting hole of slurry hole alignment, the blind end of the cover body is provided with the plug of air-vent and closing air-vent.
Preferably, the air-vent is provided with thread segment, the plug is threadedly connected to the thread segment with described
Pore links together.It is convenient during plug to remove and install.
Preferably, the thread segment is the nut being welded on the cover body.It is easy to make.Energy after damage is used for multiple times
It is enough that easily thread segment is changed.
Preferably, the cover body is provided with handle bar, the outer elasticity of the handle bar is arranged with overcoat, the handle bar and outer
The elastic adjusting mechanism for adjusting the elastic force between overcoat and handle bar is provided between set, the elastic adjusting mechanism includes being set in
Handle bar is outer and is located in the base tube in overcoat and the holding sheet being looped around outside the base tube, and the holding sheet is by some pieces of edges
The circumferentially distributed fricting strip of base tube is constituted, and the fricting strip is provided with some slide bars for radially extending along base tube, the slide bar
Slip is arranged in the base tube, and the inner of the slide bar is provided with shift-in outside driving slide bar and drives fricting strip to be connected to one with overcoat
The spring for rising, the elastic adjusting mechanism is additionally provided with the pretightning force adjustment structure of the pretightning force for adjusting the spring.Lead to when using
Cross and grip handle bar to realize removing cover body.The structure of handle bar enables to handle bar during use and has elasticity,
So as to improve comfortableness when using, the elastic effect in the technical program can also change, to adapt to different needs.Specifically
Regulation process be, by pretightning force adjustment structure driving spring moving radially along base tube, so that the same overcoat of fricting strip
Normal pressure change, so as to realize the change of pretightning force so that the thing of the power that overcoat is rocked relative to handle bar changes and comes big
The different elastic effect in road.
Preferably, the pretightning force adjustment structure includes the cone of two tubular structures being supported on base tube outside handle bar
Forming head, the axial movement of driving conical head simultaneously can make conical head stop at the driving structure and some push rods of setting position, institute
State two conical heads to be slidably connected in the way of miner diameter end is arranged oppositely in the two ends of the base tube, the two ends of the push rod are put
Put on the conical surface of described two conical heads, all of described slide bar of same fricting strip passes through the spring supporting same
On push rod described in root, the slide bar of each piece of fricting strip is respectively supported by a push rod.During regulation, by axial direction
Change the position of conical head to realize push rod along the moving radially of base tube, so as to realize change of the push rod along base tube radial position,
So as to realize the change of initial tension of spring.Convenience during regulation is good.
Preferably, is tied in the driving enough include two jacking blocks being threaded in the two ends of the base tube, described two
Individual conical head is located between described two jacking blocks.Drive conical head to realize adjusting by rotating jacking block, adjust then automatic in place
Position, convenience when using is more preferable.
Preferably, the cover body includes columnar side wall and diapire, the diapire with the sidewall weld together.
It is easy to make.
Preferably, the cover body welds together with the sealing shirt rim.It is easy to make.
A kind of restressed beam slab grouting method, including grouting with plunger, it is characterised in that the grouting with plunger includes following step
Suddenly,
The first step, cover body is covered on anchor end and connected through two bolt hole rear threads correspondingly by two screws
It is connected in the screwed hole on anchor plate and so that cover body is fixed together with anchor plate, sealing shirt rim is sealedly connected on anchor plate
Together, make plug with air-vent in released state, Grouting Pipe is docking together with Grouting Pipe connecting hole；
Second step, slip casting is carried out by Grouting Pipe；
3rd step, when have in air-vent serosity start overflow when slip casting is blocked and proceeded to air-vent by plug；
5th step, stop slip casting and start to remove cover body after 35～40 minutes, and 70 minutes after slip casting is stopped in by cover body
Remove
Preferably, in the first step by by anchor plate support sealing shirt rim position be cleaned after spread double faced adhesive tape come
Realize the sealing between anchor plate and sealing shirt rim.Convenient and low cost when being sealed.
Present invention tool has the advantage that：Energy effectively solving anchor plate root position duct slurry leakiness phenomenon, need are secondary
The problems such as sealing off and covering anchorage, precast prestressed beam slab construction quality is improve, saved construction cost.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the embodiment of the present invention one.
Schematic diagram when Fig. 2 is one use state of embodiment.
Schematic diagrams of the Fig. 3 for the embodiment of the present invention.
Fig. 4 is A-A cross-sectional schematics of the handle bar in Fig. 3.
Fig. 5 is E-E cross-sectional schematics of the handle bar of Fig. 3.
In figure：Cover body 1, side wall 11, diapire 12, air-vent 2, thread segment 21, plug 3, sealing shirt rim 4, bolt hole 41, note
Slurry pipe connecting hole 42, handle bar 51, overcoat 52, anchor end 6, screwed hole 611, screw 62, double faced adhesive tape on anchor plate 61, anchor plate
63rd, Grouting Pipe 7, elastic adjusting mechanism 8, base tube 81, holding sheet 82, fricting strip 821, slide bar 822, spring 823, pretightning force are adjusted
Structure 83, conical head 831, push rod 832, driving structure 833, jacking block 8331, restressed beam slab 9, injected hole 91.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further illustrated with embodiment.
Embodiment one, referring to Fig. 1, a kind of anti-slurry flowing machine structure in restressed beam slab anchor end, including cover body 1 and plug 3.Cover body 1
Including columnar side wall 11 and diapire 12.Side wall 11 is blocked for round steel pipe and is made.The homonymy wall 11 of diapire 12 is welded on one
Rise.Diapire 12 is provided with air-vent 2.Air-vent 2 is provided with the thread segment 21 being made up of on diapire 12 nut-welding.Cover body 1
Opening is provided with sealing shirt rim 4.Sealing shirt rim 4 welds together composition for the plate of one piece of square-outside and round-inside with cover body 1.Sealing shirt rim
4 be provided with two can correspondingly with anchor plate two screwed holes alignment bolts hole 41 and can be with restressed beam slab
Injected hole alignment a Grouting Pipe connecting hole 42.Bolt hole 41 is the strip extended along the distribution arrangement of two bolts hole
Hole is mounting hole.Plug 3 is bolt.
Referring to Fig. 2, a kind of restressed beam slab grouting method, including grouting with plunger, the grouting with plunger is comprised the following steps,
The first step, anchor plate 61 is supported the position of sealing shirt rim spread double faced adhesive tape 63 after being cleaned, sealing cover body 1 covers
On anchor end 6, Grouting Pipe connecting hole 42 is set to align with the injected hole 91 on restressed beam slab 9, by a pair of two screws 62 1
Ground is answered to be connected in the screwed hole 611 on anchor plate through two rear threads of bolt hole 41 and cause cover body 1 solid with anchor plate 61
It is scheduled on together, cover body 1 is sealed connected together with anchor plate 61 in the presence of double faced adhesive tape 63；Plug 3 is set to be in air-vent 2
Released state, Grouting Pipe 7 is docking together with Grouting Pipe connecting hole 42.
Second step, slip casting is carried out to the passage in restressed beam slab 9 by Grouting Pipe 7；
3rd step, when there is serosity to start to overflow in air-vent 2 plug 3 is threaded on thread segment 21 and will be ventilative
Block and proceed slip casting in hole 2；
5th step, stop slip casting and remove screw 62 after 35～40 minutes and remove cover body 1 from anchor end 6, cover body is removed
Moment should stop slip casting after 70 minutes in.
Embodiment two, be with the difference of embodiment one：
Referring to Fig. 3, cover body 1 is provided with handle bar 51.The outer elasticity of handle bar 51 is arranged with overcoat 52.
Referring to Fig. 4, elastic adjusting mechanism 8 is provided between handle bar 51 and overcoat 52.Elastic adjusting mechanism 8 includes base tube
81st, holding sheet 82 and pretightning force adjustment structure 83.Base tube 81 is set in outside handle bar 51.Base tube 81 is located in overcoat 52.Folder
Hold layer 82 to be made up of some pieces of fricting strips 821.Fricting strip 821 is circumferentially distributed along base tube 81.Fricting strip 821 is provided with some along base
The slide bar 822 for radially extending axially distribution of pipe.Slide bar 822 slides and is arranged in base tube 81.The inner of slide bar 822 is provided with spring
823.Spring 823 drives fricting strip to abut together with overcoat 52 by slide bar.The pretightning force adjustment structure 83 of outer shifting includes two
Individual conical head 831 and some push rods 832.Conical head 831 is tubular structure.Conical head 831 is set on handle bar 51 and wears
Base tube 81 is linked together with handle bar 51 in base tube 81.Conical head 831 is only slidably connected in base tube 81.Push rod
832 along the circumferentially distributed axially extending of base tube 81.The all of slide bar 822 of same fricting strip 821 is supported on by spring 823
On same push rod 832, the slide bar of each piece of fricting strip is respectively supported by a push rod.
Referring to Fig. 5, two conical heads 831 are slidably connected in the two ends of base tube 81 in the way of miner diameter end is arranged oppositely.
The two ends of push rod 832 are shelved on the conical surface of two conical heads 831.Pretightning force adjustment structure 83 also includes driving structure 833..
Knot enough 833 is driven to include two jacking blocks 8331 being threaded in the two ends of base tube 81.Jacking block 8331 is set in handle bar 51
On.Two conical heads 831 are located between two jacking blocks 8331.
When using, conical head 831 is driven to move along the axial direction of base tube 81 by rotating jacking block 8331, conical head 831
Drive the moving radially along base tube 81 of push rod 832, the extrusion spring 823 of push rod 832 and change pretightning force.
Claims (9)
1. the anti-slurry flowing machine structure in a kind of restressed beam slab anchor end, it is characterised in that including the cover at the anchor end that can cover restressed beam slab
Body, the opening of the cover body is connected with sealing shirt rim, and the sealing shirt rim is provided with two can same anchor plate correspondingly
On two screwed holes alignment bolt hole and can with restressed beam slab injected hole alignment Grouting Pipe connecting hole, the cover
The blind end of body is provided with the plug of air-vent and closing air-vent, and the cover body is provided with handle bar, the outer elasticity of the handle bar
Overcoat is arranged with, the elastic adjusting mechanism for adjusting the elastic force between overcoat and handle bar is provided between the handle bar and overcoat,
The elastic adjusting mechanism includes being set in outside handle bar and being located in the base tube in overcoat and is looped around outside the base tube
Holding sheet, the holding sheet is made up of some pieces of circumferentially distributed fricting strips along base tube, and the fricting strip is provided with some along base
The slide bar for radially extending of pipe, the sliding bar is arranged in the base tube, and the inner of the slide bar is provided with outside driving slide bar to be moved
And then drive fricting strip spring with overcoat abutting together, the elastic adjusting mechanism to be additionally provided with the pretension for adjusting the spring
The pretightning force adjustment structure of power.
2. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 1, it is characterised in that the air-vent is provided with spiral shell
Stricture of vagina section, the thread segment that is threadedly connected to of the plug links together with the air-vent.
3. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 2, it is characterised in that the thread segment is welding
Nut on the cover body.
4. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 1 or 2 or 3, it is characterised in that the pretightning force
Adjustment structure includes the conical head of two tubular structures being supported on base tube outside handle bar, drives conical head axial movement and energy
Conical head is enough set to stop at the driving structure and some push rods of setting position, two conical heads are arranged oppositely with miner diameter end
Mode be slidably connected in the two ends of the base tube, the two ends of the push rod are shelved on the conical surface of two conical heads,
The all of described slide bar of same fricting strip by the spring supporting on the same push rod, each piece of fricting strip
The slide bar is respectively supported by a push rod.
5. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 4, it is characterised in that the driving structure includes
Two jacking blocks being threaded in the two ends of the base tube, two conical heads are located between two jacking blocks.
6. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 1 or 2 or 3, it is characterised in that the cover body bag
Include columnar side wall and diapire, the diapire with the sidewall weld together.
7. the anti-slurry flowing machine structure in restressed beam slab anchor end according to claim 1 or 2 or 3, it is characterised in that the cover body is same
The sealing shirt rim welds together.
8. a kind of restressed beam slab grouting method of the anti-slurry flowing machine structure in restressed beam slab anchor end suitable for described in claim 1,
Including grouting with plunger, it is characterised in that the grouting with plunger is comprised the following steps,
The first step, cover body is covered on anchor end and be connected to through two bolt hole rear threads correspondingly by two screws
In screwed hole on anchor plate cover body is fixed together with anchor plate, sealing shirt rim is sealedly connected on one with anchor plate
Rise, make plug with air-vent in released state, Grouting Pipe is docking together with Grouting Pipe connecting hole；
Second step, slip casting is carried out by Grouting Pipe；
3rd step, when have in air-vent serosity start overflow when slip casting is blocked and proceeded to air-vent by plug；
5th step, stop slip casting and start to remove cover body after 35～40 minutes, and 70 minutes after slip casting is stopped in cover body is removed.
9. restressed beam slab grouting method according to claim 8, it is characterised in that by by anchor plate in the first step
Spread double faced adhesive tape to realize the sealing between anchor plate and sealing shirt rim after being cleaned in the position of support sealing shirt rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796353.1A CN105386409B (en) | 2015-11-18 | 2015-11-18 | Grout-flow-preventing mechanism for anchor end of pre-stressed beam plate and grouting method for pre-stressed beam plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796353.1A CN105386409B (en) | 2015-11-18 | 2015-11-18 | Grout-flow-preventing mechanism for anchor end of pre-stressed beam plate and grouting method for pre-stressed beam plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105386409A CN105386409A (en) | 2016-03-09 |
| CN105386409B true CN105386409B (en) | 2017-05-03 |
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| CN201510796353.1A Active CN105386409B (en) | 2015-11-18 | 2015-11-18 | Grout-flow-preventing mechanism for anchor end of pre-stressed beam plate and grouting method for pre-stressed beam plate |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009497B (en) * | 2017-05-04 | 2019-11-08 | 江苏惠淳建设有限公司 | A kind of production technology of anchor recess formula pre-stressed bridge beam slab |
| CN109056550B (en) * | 2018-10-17 | 2020-01-03 | 安徽升建工程管理有限公司 | High-pressure grouting equipment for reinforcing bottom of bridge in high-temperature environment |
| CN109403549B (en) * | 2018-11-14 | 2021-08-17 | 浙江交工宏途交通建设有限公司 | Environment-friendly pressing cover device for prestressed beam slab anchor |
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| CN2594551Y (en) * | 2002-12-16 | 2003-12-24 | 柳州欧维姆机械有限责任公司 | Bowl style slurry stopper |
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| CN202114803U (en) * | 2011-05-24 | 2012-01-18 | 中铁三局集团有限公司 | Mud jacking blockage cap cup of post-tensioned pre-stressing bridge |
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