CN107740592A - A kind of protection device of prestressed pore passage pore-forming - Google Patents
A kind of protection device of prestressed pore passage pore-forming Download PDFInfo
- Publication number
- CN107740592A CN107740592A CN201710993665.0A CN201710993665A CN107740592A CN 107740592 A CN107740592 A CN 107740592A CN 201710993665 A CN201710993665 A CN 201710993665A CN 107740592 A CN107740592 A CN 107740592A
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- China
- Prior art keywords
- pore
- forming
- steel strand
- strand wires
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011148 porous material Substances 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 229920003023 plastic Polymers 0.000 claims abstract description 31
- 239000004033 plastic Substances 0.000 claims abstract description 31
- 239000011083 cement mortar Substances 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 26
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention is a kind of protection device of prestressed pore passage pore-forming; described bellows safeguard measure is that the steel strand wires of parallel steel beam in bellows pore-forming and occupy certain space with plastic tube thereon; complete to form an effective passage in steel strand wires and prestressed pore passage pore-forming after plastic tube is extracted in concreting; this passage can be tightened up deformation displacement in prestressed stretch-draw with steel strand wires, but the aisle spare minimum formed when also can guarantee that mud jacking below cement mortar pass through.This programme then just solves this short slab of protection bushing pipe, adapts to various ducts, the various operating modes of adaptation, cost is cheap, can be used in turn.When overcoming prestressed pore passage pore-forming bellows hole wall have hole, local dropout spillage, be hit it is recessed it is flat after wear to enter after steel strand wires, first steel strand tensioning can not mud jacking the defects of；Also overcome due to the defects of protecting the big accommodation of bushing pipe cost small, thus the unimpeded effect in protection duct can be played.
Description
Technical field
The present invention relates to the post-stressed duct of civil engineering structure, duct part spillage when preventing concreting,
Squeeze it is flat cause later stage steel stranded wire penetrating adapter difficult or a kind of protection device that mud jacking is difficult, be a kind of precautionary measures, be specifically one kind
The protection device of prestressed pore passage pore-forming.
Background technology
The post-stressed duct that existing civil engineering structure uses is increasingly longer, continuous structure duct put down it is curved, perpendicular
Curved position is more and more, and concrete thickness is increasing；And as long as cell walls have an aperture at one or make worker one firm by ramming not
It is carefully that pipeline at one is recessed flat with rod impact is made firm by ramming, it will result in that duct is obstructed, and so as to which steel wire bundle can not penetrate, tradition is done
Method is to verify block part, and " belly breaking " operation is carried out to structure and is dredged, steel beam will chisel position use again after passing through mixed
Solidifying grave blocks up；This way is necessarily improved in recent years, and many units in charge of construction are less than design bellows chi using a kind of diameter
Very little 1cm plastic tube penetrates duct as protection bushing pipe in advance, and revolutionary work is served for short-bore road, the construction of precast beam field
With.
But when must take first steel strand for operating modes such as the larger duct of long duct, bending, the ducts for having extension device
Duct safeguard measure then can only be with " fortune ".And for Cast-in-situ Beam and different-diameter duct, protection bushing pipe is worn in pipeline
Scheme just has a lack of power：Cost is too big, once exercises and uses, different-diameter duct will buy the pvc pipe of different-diameter.
The content of the invention
When the present invention overcomes prestressed pore passage pore-forming bellows hole wall have hole, local dropout spillage, be hit it is recessed it is flat after wear
Do not enter after steel strand wires, first steel strand tensioning can not mud jacking the defects of；Also overcome because the protection big accommodation of bushing pipe cost is small
The defects of, spy proposes a kind of protection device of prestressed pore passage pore-forming.
For this technical scheme is that, a kind of protection device of prestressed pore passage pore-forming, including bellows, bellows
In prestressed pore passage pore-forming, it is characterised in that：Steel strand wires first penetrate pore-forming, and wear plastic tube until penetrating entirely on steel strand wires
Portion's pore-forming, described bellows safeguard measure are that the steel strand wires of parallel steel beam in bellows pore-forming and account for plastic tube thereon
According to certain space, formation one has in steel strand wires with prestressed pore passage pore-forming after concreting completion plastic tube is extracted
The passage of effect, this passage can be tightened up deformation displacement in prestressed stretch-draw with steel strand wires, but the aisle spare formed is most
Small cement mortar when also can guarantee that mud jacking below passes through.
Further improve is：The plastics pipe diameter is not only controlled less than ripple pipe diameter 1cm, it is only necessary to can be inserted in
Steel strand wires.
Further improve is：The steel strand wires radical that is inserted in is one or 2-3 roots.
Further improve is：Described plastic tube is diameter 20mm pvc pipe.
Beneficial effect：
This programme then just solves this short slab of protection bushing pipe, adapt to various ducts, adapt to various operating modes, cost it is cheap,
It can be used in turn.When overcoming prestressed pore passage pore-forming bellows hole wall have hole, local dropout spillage, be hit it is recessed it is flat after wear to enter
After steel strand wires, first steel strand tensioning can not mud jacking the defects of；Also overcome and lacked because the protection big accommodation of bushing pipe cost is small
Fall into, thus the unimpeded effect in protection duct can be played.
Steel strand wires can penetrate duct in advance, and the duct in duct and one-end tension for connector is also suitable.
A steel strand wires can be just inserted in 20mm pvc pipe, this plastic tube cost substantially reduces and market is extensive.
Prestress hole pipe protection bushing pipe described in the present apparatus is diameter about 20mm plastic tube, and a steel strand wires are penetrated in pipe
Core, parallel steel beam are penetrated in bellows, due to the plastic tube uniform diameters of use, so market purchasing is convenient；Due to this modeling
Expects pipe is widely used using other are used for extensively, after recovery in daily life, so wasting few；Because this plastic tube is than passing
Small more of liner diameter of uniting, thus it is monovalent much low, and unit in charge of construction is happy to use.The passage of 20mm diameters can be formed in duct
Area, it can ensure that any hole path pressure grouting is smooth.
Brief description of the drawings
Fig. 1 is to wear plastic tube mode cross section schematic diagram.
Fig. 2 is 12+1 casing mode schematic diagrames.
Fig. 3 is 12 direct casing mode schematic diagrames.
1 is plastic tube in figure, and 2 be steel strand wires, and 3 be bellows.
Embodiment
The present invention is as shown in Fig. 1/2/3.
A kind of protection device of prestressed pore passage pore-forming, including bellows 3, bellows 3 twist in prestressed pore passage pore-forming, steel
Line 3 first penetrates pore-forming, and wears plastic tube 1 until penetrating whole pore-formings, the described safeguard measure of bellows 3 on steel strand wires 2
It is that the steel strand wires 2 of parallel steel beam in the pore-forming of bellows 3 and occupy certain space with plastic tube 1 thereon, in concreting
Complete to form an effective passage in steel strand wires 2 and prestressed pore passage pore-forming after plastic tube 1 is extracted, this passage is pre-
Deformation displacement can be tightened up during stress tension with steel strand wires 2, but the aisle spare minimum formed is when also can guarantee that mud jacking below
Cement mortar passes through.
The diameter control of plastic tube 1 is less than the diameter 1cm of bellows 3, it is only necessary to can be inserted in steel strand wires 2.
The radical of steel strand wires 2 that is inserted in is one or 2-3 roots.
Described plastic tube 1 is diameter 20mm pvc pipe.
When specifically used
First, for overlength duct, such as porous cast-in-situ continuous beam；2 parallel plastic pipe-covered of steel strand wires is hung in into framework of steel reinforcement in advance,
Using support support into rough line style, set is accurately positioned after penetrating bellows 3 with well word muscle for segmentation, after installation anchor plate, template
Casting concrete, the present apparatus and steel core are extracted out, according to normal procedure tensioning mud jacking.
2nd, for the rear technique of steel strand 2, by steel strand wires 2 by root（One more than design radical）Using strand pulling machine or volume
The machine of raising is fed through duct, and topmost one artificial set is penetrated into a plastic tube 1, according to being taken out after normal procedure casting concrete
Go out the present apparatus and then tensioning mud jacking.
3rd, it is before casting concrete to penetrate a steel strand wires 2, Ran Hou after model sheetinstallat for connector duct more
This penetrates plastic tube 1 with set on steel strand wires 2, extracts the present apparatus, normal tensioning mud jacking after the completion of concreting out.
4th, for the long duct of both ends tensioning, after steel strand wires 2 have been worn, the steel strand wires 2 relatively loosened are selected, from both ends
To covering diameter 25-30mm plastic tubes 1, plastic tube 1 is extracted out from both ends after the completion of concreting, steel strand wires 2 are not extracted out, this side
Formula need not wear steel strand more, and 2, it will not also waste steel strand wires 2, but 1 appropriate overstriking of plastic tube is to form the protection face of larger cavity
Product.
Above-mentioned three also admissible patterns.
For there is the steel beam for compiling beam request, because sleeve pipe can not pass through at colligation, it is necessary to penetrate a steel strand wires more and cover again
Plastic tube, above-mentioned four are no longer applicable.
Claims (4)
1. a kind of protection device of prestressed pore passage pore-forming, including bellows, bellows exist in prestressed pore passage pore-forming, its feature
In：Steel strand wires first penetrate pore-forming, and wear plastic tube on steel strand wires and arranged until penetrating whole pore-formings, described ripple protection of pipe
It is that the steel strand wires of parallel steel beam in bellows pore-forming and occupy certain space with plastic tube thereon to apply, complete in concreting
An effective passage is formed after being extracted into plastic tube in steel strand wires and prestressed pore passage pore-forming, this passage is in prestressing force
It can be tightened up deformation displacement during tensioning with steel strand wires, but the aisle spare minimum formed cement mortar when also can guarantee that mud jacking below
Pass through.
2. according to a kind of protection device of prestressed pore passage pore-forming described in claim 1, it is characterised in that：The plastic tube
Diameter is not only controlled less than ripple pipe diameter 1cm, it is only necessary to can be inserted in steel strand wires.
3. according to a kind of protection device of prestressed pore passage pore-forming described in claim 1, it is characterised in that：It is described to be inserted in steel
Twisted wire radical is one or 2-3 roots.
4. according to a kind of protection device of prestressed pore passage pore-forming described in claim 1, it is characterised in that：Described plastics
Manage as diameter 20mm pvc pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993665.0A CN107740592A (en) | 2017-10-23 | 2017-10-23 | A kind of protection device of prestressed pore passage pore-forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993665.0A CN107740592A (en) | 2017-10-23 | 2017-10-23 | A kind of protection device of prestressed pore passage pore-forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107740592A true CN107740592A (en) | 2018-02-27 |
Family
ID=61238135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710993665.0A Pending CN107740592A (en) | 2017-10-23 | 2017-10-23 | A kind of protection device of prestressed pore passage pore-forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107740592A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764302A (en) * | 2019-04-02 | 2020-10-13 | 中铁十八局集团第五工程有限公司 | Concrete pouring construction method under large-diameter flat hinge of swivel bridge |
| CN112832537A (en) * | 2021-01-11 | 2021-05-25 | 中国十七冶集团有限公司 | Construction method for preventing blockage and pipe blockage caused by slurry leakage of prestressed pre-buried pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006063694A (en) * | 2004-08-27 | 2006-03-09 | Sumitomo Denko Steel Wire Kk | Tendon for prestressed concrete and manufacturing method of the tendon |
| CN203593530U (en) * | 2013-12-03 | 2014-05-14 | 兖矿东华建设有限公司 | Crane beam curved prestressed combined corrugated tube |
| CN104005340A (en) * | 2014-06-12 | 2014-08-27 | 中铁六局集团天津铁路建设有限公司 | Construction method for threading full-length prestressed steel strands of continuous beam |
| CN106758836A (en) * | 2016-12-23 | 2017-05-31 | 中铁十四局集团第二工程有限公司 | A kind of post stressed concrete is big apart from reeving steel strands method |
-
2017
- 2017-10-23 CN CN201710993665.0A patent/CN107740592A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006063694A (en) * | 2004-08-27 | 2006-03-09 | Sumitomo Denko Steel Wire Kk | Tendon for prestressed concrete and manufacturing method of the tendon |
| CN203593530U (en) * | 2013-12-03 | 2014-05-14 | 兖矿东华建设有限公司 | Crane beam curved prestressed combined corrugated tube |
| CN104005340A (en) * | 2014-06-12 | 2014-08-27 | 中铁六局集团天津铁路建设有限公司 | Construction method for threading full-length prestressed steel strands of continuous beam |
| CN106758836A (en) * | 2016-12-23 | 2017-05-31 | 中铁十四局集团第二工程有限公司 | A kind of post stressed concrete is big apart from reeving steel strands method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764302A (en) * | 2019-04-02 | 2020-10-13 | 中铁十八局集团第五工程有限公司 | Concrete pouring construction method under large-diameter flat hinge of swivel bridge |
| CN112832537A (en) * | 2021-01-11 | 2021-05-25 | 中国十七冶集团有限公司 | Construction method for preventing blockage and pipe blockage caused by slurry leakage of prestressed pre-buried pipeline |
| CN112832537B (en) * | 2021-01-11 | 2022-05-13 | 中国十七冶集团有限公司 | Construction method for preventing blockage and pipe blockage caused by slurry leakage of prestressed pre-buried pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180227 |
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| WD01 | Invention patent application deemed withdrawn after publication |