CN105386409A - 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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- CN105386409A CN105386409A CN201510796353.1A CN201510796353A CN105386409A CN 105386409 A CN105386409 A CN 105386409A CN 201510796353 A CN201510796353 A CN 201510796353A CN 105386409 A CN105386409 A CN 105386409A
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- cover body
- beam slab
- anchor end
- base tube
- vent
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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, particularly relate to the anti-slurry flowing machine structure of a kind of restressed beam slab anchor end and restressed beam slab grouting method.
Background technology
In restressed beam slab mortar depositing construction process, existing method is closed by anchor end steel strand with Fast Setting Cement Slurry (or gambling stream king), reaches after some strength start the slip casting of restressed beam slab duct until cement paste.Chinese Patent Application No. be 2013100658168, Authorization Notice No. is CN103147400A, name is called the grouting method disclosing a kind of restressed beam slab in the patent document of " a kind of cast-in-situ box girder bridge web exceeds presstressed reinforcing steel single tension construction method ".Existing restressed beam slab has the following disadvantages: have ignored the slurries when prestressed pore passage slip casting small part can squeeze out and damaged by the anchor end cement lumps closed from the steel strand gap of ground tackle position (anchor end), often there is leakiness phenomenon in the slurry in shaping rear anchor plate root position duct, and also need to carry out secondary sealing off and covering anchorage, cause steel strand Stress transmit not good, affect precast beam application life, sealing off and covering anchorage causes construction cost to increase again.
Summary of the invention
The invention provides a kind of anti-slurry flowing machine structure of anti-restressed beam slab anchor end and restressed beam slab grouting method of the tightness of slurry without the need to secondary sealing off and covering anchorage and in the duct that can ensure anchor plate place place, after solving existing prestressed girder sheet metal forming there is leakiness phenomenon and also need to carry out the problem of secondary sealing off and covering anchorage in the slurry in anchor plate root position duct.
Above technical problem is solved by following technical proposal: the anti-slurry flowing machine structure of a kind of restressed beam slab anchor end, comprise the cover body of the anchor end that can cover restressed beam slab, the openend of described cover body is connected with sealing shirt rim, described sealing shirt rim is provided with two can correspondingly with bolt hole and the Grouting Pipe connecting hole that can align with the injected hole on restressed beam slab of the screwed hole alignment of two on cat backing plate, and the blind end of described cover body is provided with the plug of air-vent and closed air-vent.
As preferably, described air-vent is provided with thread segment, and described plug is threadedly connected to described thread segment and links together with described air-vent.Facilitate when removing and installing plug.
As preferably, described thread segment is be welded in the nut on described cover body.Easy to make.Repeatedly can double thread section change easily after service failure.
As preferably, described cover body is provided with handle bar, the outer resilient sleeve of described handle bar is provided with overcoat, the elastic adjusting mechanism of the elastic force regulated between overcoat and handle bar is provided with between described handle bar and overcoat, described elastic adjusting mechanism comprises and is set in handle bar outer and the base tube be located in overcoat and the holding sheet being looped around described base tube outside, the fricting strip that described holding sheet is distributed by the some pieces of circumferences along base tube is formed, described fricting strip is provided with the slide bar that some radial directions along base tube extend, described sliding bar is arranged in described base tube, the inner of described slide bar is provided with and drives the outer shift-in of slide bar and drive fricting strip to be connected to spring together with overcoat, described elastic adjusting mechanism is also provided with the pretightning force adjustment structure of the pretightning force regulating described spring.Cover body is taken off by gripping handle bar to realize during use.This structure of handle bar can make handle bar in use procedure have elasticity, thus improves comfortableness when using, and the elastic effect in the technical program can also change, to adapt to different needs.Concrete adjustment process is, by pretightning force adjustment structure driving spring moving radially along base tube, thus fricting strip is changed with the normal pressure of overcoat, thus realize the change of pretightning force, the thing change of the power that overcoat is rocked relative to handle bar carrys out the different elastic effect in main road.
As preferably, described pretightning force adjustment structure comprises the conical head that base tube is supported on the tubular structure outside handle bar by two, drive conical head move axially and can make conical head stop at desired location drives structure and some push rods, described two conical heads are slidably connected in the two ends of described base tube in the mode that miner diameter end subtend is arranged, the two ends of described push rod are shelved on the conical surface of described two conical heads, all described slide bars of same fricting strip pass through described spring supporting on same described push rod, the described slide bar of each block fricting strip is respectively supported by a described push rod.During adjustment, realize push rod moving radially thus realizing the change of push rod along base tube radial position along base tube by the position axially changing conical head, thus realize the change of initial tension of spring.Convenience during adjustment is good.
As preferably, describedly drive the jacking block tied and enough comprise in two two ends being threaded in described base tube, described two conical heads are between described two jacking blocks.Drive conical head to realize regulating by rotating jacking block, regulate and put in place, automatically locate, convenience during use is better.
As preferably, described cover body comprises columnar sidewall and diapire, and described diapire with described sidewall weld together.Easy to make.
As preferably, described cover body is connected together with described sealed skirt side weld.Easy to make.
A kind of restressed beam slab grouting method, comprise grouting with plunger, it is characterized in that, described grouting with plunger comprises the following steps,
The first step, cover body covered on anchor end and be connected to through two bolt hole rear threads correspondingly by two screws in the screwed hole on cat backing plate and cover body is fixed together with cat backing plate, sealing shirt rim is sealed connected together with cat backing plate, make plug be in released state with air-vent, Grouting Pipe is docking together with Grouting Pipe connecting hole;
Second step, carry out slip casting by Grouting Pipe;
3rd step, by plug air-vent blocked when there being slurries to start to overflow in air-vent and proceed slip casting;
5th step, stopping slip casting starting to take off cover body after 35 ~ 40 minutes, and were taken off by cover body in 70 minutes after stopping slip casting
As preferably, the position by cat backing plate being supported sealing shirt rim in the first step carry out clean after spread the sealing that double faced adhesive tape realizes between cat backing plate and sealing shirt rim.Convenient and cost is low when sealing.
The present invention has following advantage: effectively can solve anchor plate root position duct slurry leakiness phenomenon, need the problems such as secondary sealing off and covering anchorage, improve precast prestressed beam slab construction quality, saved construction cost.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention one.
Schematic diagram when Fig. 2 is embodiment one using state.
Fig. 3 be the embodiment of the present invention and schematic diagram.
Fig. 4 is A-A cross-sectional schematic of the handle bar in Fig. 3.
Fig. 5 is E-E cross-sectional schematic of the handle bar of Fig. 3.
In figure: cover body 1, sidewall 11, diapire 12, air-vent 2, thread segment 21, plug 3, sealing shirt rim 4, bolt hole 41, Grouting Pipe connecting hole 42, handle bar 51, overcoat 52, anchor end 6, cat backing plate 61, screwed hole 611 on cat backing plate, screw 62, double faced adhesive tape 63, Grouting Pipe 7, elastic adjusting mechanism 8, base tube 81, holding sheet 82, fricting strip 821, slide bar 822, spring 823, pretightning force adjustment structure 83, conical head 831, push rod 832, drives structure 833, jacking block 8331, restressed beam slab 9, injected hole 91.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, see Fig. 1, the anti-slurry flowing machine structure of a kind of restressed beam slab anchor end, comprises cover body 1 and plug 3.Cover body 1 comprises columnar sidewall 11 and diapire 12.Sidewall 11 blocks for round steel pipe and is made.Diapire 12 welds together with sidewall 11.Diapire 12 is provided with air-vent 2.Air-vent 2 is provided with the thread segment 21 be made up of on diapire 12 nut-welding.The openend of cover body 1 is provided with sealing shirt rim 4.Sealing shirt rim 4 is that the plate of one piece of square-outside and round-inside welds together formation with cover body 1.Sealing shirt rim 4 is provided with two can correspondingly with bolt hole 41 and a Grouting Pipe connecting hole 42 that can align with the injected hole on restressed beam slab of the screwed hole alignment of two on cat backing plate.Bolt hole 41 is the elongate holes and mounting hole that extend along the distribution arrangement of two bolts hole.Plug 3 is bolt.
See Fig. 2, a kind of restressed beam slab grouting method, comprises grouting with plunger, and described grouting with plunger comprises the following steps,
The first step, position cat backing plate 61 being supported sealing shirt rim carry out clean after spread double faced adhesive tape 63, sealing cover body 1 covers on anchor end 6, Grouting Pipe connecting hole 42 is alignd with the injected hole 91 on restressed beam slab 9, be connected to through two bolt hole 41 rear threads correspondingly by two screws 62 in the screwed hole 611 on cat backing plate and cover body 1 is fixed together with cat backing plate 61, being sealed connected together with cat backing plate 61 at the effect lower cover 1 of double faced adhesive tape 63; Make plug 3 be in released state with air-vent 2, Grouting Pipe 7 is docking together with Grouting Pipe connecting hole 42.
Second step, carry out slip casting by the passage in Grouting Pipe 7 pairs of restressed beam slab 9;
3rd step, when there being slurries to start to overflow in air-vent 2, plug 3 be threaded on thread segment 21 and air-vent 2 blocked and proceeds slip casting;
5th step, stop slip casting taking off screw 62 after 35 ~ 40 minutes and 6 to be taken off from cat end by cover body 1, the moment that cover body takes off should in 70 minutes after stopping slip casting.
Embodiment two, the difference with embodiment one is:
See Fig. 3, cover body 1 is provided with handle bar 51.The outer resilient sleeve of handle bar 51 is provided with overcoat 52.
See Fig. 4, between handle bar 51 and overcoat 52, be provided with elastic adjusting mechanism 8.Elastic adjusting mechanism 8 comprises base tube 81, 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.Holding sheet 82 is made up of some pieces of fricting strips 821.Fricting strip 821 distributes along the circumference of base tube 81.Fricting strip 821 is provided with the slide bar 822 that some radial directions along base tube extend axial distribution.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 be connected to together with overcoat 52 by slide bar.The pretightning force adjustment structure 83 of moving outward comprises two conical heads 831 and some push rods 832.Conical head 831 is tubular structure.Conical head 831 to be set on handle bar 51 and to be located in base tube 81 and linked together with handle bar 51 by base tube 81.Conical head 831 is only connected in base tube 81 slidably.Push rod 832 axially extends along the circumference distribution of base tube 81.All slide bars 822 of same fricting strip 821 are supported on same push rod 832 by spring 823, and the slide bar of each block fricting strip is respectively supported by a push rod.
See Fig. 5, the mode that two conical heads 831 are arranged with miner diameter end subtend is slidably connected in the two ends of base tube 81.The two ends of push rod 832 are shelved on the conical surface of two conical heads 831.Pretightning force adjustment structure 83 also comprises drives structure 833.。Driving knot enough 833 comprises the jacking block 8331 in two two ends being threaded in base tube 81.Jacking block 8331 is set on handle bar 51.Two conical heads 831 are between two jacking blocks 8331.
During use, drive conical head 831 to move along the axis of base tube 81 by rotating jacking block 8331, conical head 831 drives push rod 832 moving radially along base tube 81, push rod 832 extrusion spring 823 and change pretightning force.
Claims (10)
1. the anti-slurry flowing machine structure of restressed beam slab anchor end, it is characterized in that, comprise the cover body of the anchor end that can cover restressed beam slab, the openend of described cover body is connected with sealing shirt rim, described sealing shirt rim is provided with two can correspondingly with bolt hole and the Grouting Pipe connecting hole that can align with the injected hole on restressed beam slab of the screwed hole alignment of two on cat backing plate, and the blind end of described cover body is provided with the plug of air-vent and closed air-vent.
2. the anti-slurry flowing machine structure of restressed beam slab anchor end according to claim 1, it is characterized in that, described air-vent is provided with thread segment, and described plug is threadedly connected to described thread segment and links together with described air-vent.
3. want the anti-slurry flowing machine structure of restressed beam slab anchor end described in 2 according to right, it is characterized in that, described thread segment is be welded in the nut on described cover body.
4. want the anti-slurry flowing machine structure of restressed beam slab anchor end described in 1 or 2 or 3 according to right, it is characterized in that, described cover body is provided with handle bar, the outer resilient sleeve of described handle bar is provided with overcoat, the elastic adjusting mechanism of the elastic force regulated between overcoat and handle bar is provided with between described handle bar and overcoat, described elastic adjusting mechanism comprises and is set in handle bar outer and the base tube be located in overcoat and the holding sheet being looped around described base tube outside, the fricting strip that described holding sheet is distributed by the some pieces of circumferences along base tube is formed, described fricting strip is provided with the slide bar that some radial directions along base tube extend, described sliding bar is arranged in described base tube, the inner of described slide bar is provided with and drives the outer shift-in of slide bar and drive fricting strip to be connected to spring together with overcoat, described elastic adjusting mechanism is also provided with the pretightning force adjustment structure of the pretightning force regulating described spring.
5. the anti-slurry flowing machine structure of restressed beam slab anchor end according to claim 4, it is characterized in that, described pretightning force adjustment structure comprises the conical head that base tube is supported on the tubular structure outside handle bar by two, drive conical head move axially and can make conical head stop at desired location drives structure and some push rods, described two conical heads are slidably connected in the two ends of described base tube in the mode that miner diameter end subtend is arranged, the two ends of described push rod are shelved on the conical surface of described two conical heads, all described slide bars of same fricting strip pass through described spring supporting on same described push rod, the described slide bar of each block fricting strip is respectively supported by a described push rod.
6. the anti-slurry flowing machine structure of restressed beam slab anchor end according to claim 5, is characterized in that, the described jacking block driving knot enough to comprise in two two ends being threaded in described base tube, described two conical heads are between described two jacking blocks.
7. want the anti-slurry flowing machine structure of restressed beam slab anchor end described in 1 or 2 or 3 according to right, it is characterized in that, described cover body comprises columnar sidewall and diapire, and described diapire with described sidewall weld together.
8. want the anti-slurry flowing machine structure of restressed beam slab anchor end described in 1 or 2 or 3 according to right, it is characterized in that, described cover body is connected together with described sealed skirt side weld.
9. be applicable to a restressed beam slab grouting method for the anti-slurry flowing machine structure of restressed beam slab anchor end according to claim 1, comprise grouting with plunger, it is characterized in that, described grouting with plunger comprises the following steps,
The first step, cover body covered on anchor end and be connected to through two bolt hole rear threads correspondingly by two screws in the screwed hole on cat backing plate and cover body is fixed together with cat backing plate, sealing shirt rim is sealed connected together with cat backing plate, make plug be in released state with air-vent, Grouting Pipe is docking together with Grouting Pipe connecting hole;
Second step, carry out slip casting by Grouting Pipe;
3rd step, by plug air-vent blocked when there being slurries to start to overflow in air-vent and proceed slip casting;
5th step, stopping slip casting starting to take off cover body after 35 ~ 40 minutes, and were taken off by cover body in 70 minutes after stopping slip casting.
10. precast prestressed beam slab grouting method according to claim 9, is characterized in that, the position by cat backing plate being supported sealing shirt rim in the first step carry out clean after spread the sealing that double faced adhesive tape realizes between cat backing plate and 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 |
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| 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 |
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| CN105386409A true CN105386409A (en) | 2016-03-09 |
| CN105386409B CN105386409B (en) | 2017-05-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107009497A (en) * | 2017-05-04 | 2017-08-04 | 绵阳市川交公路规划勘察设计有限公司 | A kind of production technology of anchor recess formula pre-stressed bridge beam slab |
| CN109056550A (en) * | 2018-10-17 | 2018-12-21 | 安徽升建工程管理有限公司 | Bridge bottom, which reinforces, under hot environment uses high-pressure slip-casting equipment |
| CN109403549A (en) * | 2018-11-14 | 2019-03-01 | 浙江交工宏途交通建设有限公司 | Restressed beam slab anchor ring pressure maintaining closure assembly and restressed beam slab grouting method |
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| 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 |
| CN109056550A (en) * | 2018-10-17 | 2018-12-21 | 安徽升建工程管理有限公司 | Bridge bottom, which reinforces, under hot environment uses high-pressure slip-casting equipment |
| CN109403549A (en) * | 2018-11-14 | 2019-03-01 | 浙江交工宏途交通建设有限公司 | Restressed beam slab anchor ring pressure maintaining closure assembly and restressed beam slab grouting method |
| 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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