CN205978859U - Prestressing force steel cylinder concrete pipe's anti structure of splitting of socket - Google Patents
Prestressing force steel cylinder concrete pipe's anti structure of splitting of socket Download PDFInfo
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- CN205978859U CN205978859U CN201620361723.9U CN201620361723U CN205978859U CN 205978859 U CN205978859 U CN 205978859U CN 201620361723 U CN201620361723 U CN 201620361723U CN 205978859 U CN205978859 U CN 205978859U
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Abstract
The utility model provides a prestressing force steel cylinder concrete pipe's anti structure of splitting of socket, belongs to compound cement pipe technical field. This kind of prestressing force steel cylinder concrete pipe (PCCP) socket is anti to split the structure, includes to adopt three kinds of concrete measures such as steel fiber concrete at the special -shaped steel loop of socket end outside reservation movement joint, the thin steel loop of socket end tube core inside lining and socket end tube core, PCCP socket end use steel fiber concrete and in it the wall liner with thin steel loop for improve the bending resistance of socket end, resist because of the pipeline winding additional bending moment that prestressed wire leaded to, reduce socket end tube core and produce the great deformation of turning up, at the special -shaped steel loop of socket end outside reservation movement joint, satisfy pipeline deformation and coordinate and reduce additional bending moment simultaneously, prevent that the ring crack from shifting to tube core inner wall concrete, can show improvement PCCP production quality and military service durability, this kind of anti structure of splitting can realize seamless butt joint with current PCCP production methods, has easy operation, low cost's advantage.
Description
Technical field
This utility model is related to a kind of socket cracking structure of Prestressed concrete cylinder pipe, belongs to compound concrete Manifold technology field.
Background technology
Prestressed concrete cylinder pipe（Pres-stressed Concrete
Cylinder Pipe, is abbreviated as PCCP）It is a kind of compound tubing, combined by bell and spigot abnormity steel loop, concrete, steel cylinder, high tensile steel wire and cement mortar different materials, the features such as impervious to concrete anti-compression, steel wire tension, steel cylinder are organically combined, make full use of the physico mechanical characteristic playing various materials, make tubing have the " three high " feature of high impervious, high leakproofness and high intensity simultaneously, and it is increasingly becoming defeated conduit pipe engineering, especially heavy caliber, senior engineer's pressure, the first-selected buried pipeline material of deep earthing laying use condition.China introduces PCCP production technology in late 1980s, progressively promotes after nineteen ninety-five.At present, domestic either PCCP production technology or production equipment all relative maturity, the production line having possessed PCCP production capacity has nearly hundred, year designed productive capacity reach 3000km, the PCCP of maximum specification has reached DN4800.PCCP is widely used in domestic large-scale water conveying and diverting engineering, such as Shanxi Yellow River Diversion Project（DN3000,43.2km）, Middle Line Project For Transferring Water From South To North Beijing-to-Shijiazhuang section water delivery engineering（DN4000, two-wire 56km）, Shenyang Dahuofang diversion the second stage of the project（DN3200～DN2400, two-wire 132km）, Shenzhen Dong-Shen water supply project（DN2600,17.3km）, Taishan nuclear power power plant first stage of the project water source of fresh water engineering（DN2200, two-wire 11.35km）Deng.
PCCP tube core is made up of the high-strength coagulation of steel cylinder, its outside winding compressor wire, and then in the outside of compressor wire, spray forms protective layer with cement mortar.Steel cylinder is welded together with steel bell and spigot, forms slidingtype flexible joint by the groove on bell and spigot and cushion rubber.According to the difference of steel cylinder position in tube core, lined Prestressed concrete cylinder pipe can be divided into（PCCPL）With embed-type Prestressed concrete cylinder pipe（PCCPE）, wherein caliber is in 1200mm（DN1200）Hereinafter it is generally lined, caliber is in 1400mm（DN1400）Below usually embed-type.Tube core concrete is generally poured using adding template vertical inside and outside steel cylinder, and vibrates molding and steam curing through buttress type vibrator and make.In PCCP production process, due to being embedded into the abrupt change of cross-section of steel cylinder and socket end abnormity steel loop root, cause this to be in when compressor wire is wound around and produce larger stress concentration, generally in the tube core inwall away from socket end 200～300mm, ring crack occurs, and be continuously applied to prestressed, crack from surface to steel cylinder at develop in depth and breadth.Although in PCCP production process, also can take the measures such as insulation, watering, also can only control critical eigenvalue width development further, the appearance of socket end inwall ring crack can not be inherently eliminated.Pipeline handling thereafter, maintenance, the stage such as deposit, because the reason such as concrete shrinkage crack will be developed further.
Data shows, socket inwall ring crack accounts for the 90% of crack number of die.According to existing specification, although allowing PCCP to there is a certain degree of ring crack when dispatching from the factory, but in fact it could happen that crack situation about cannot all close during follow-up military service, and pipe deforming is coordinated also to be not being met, under the effect of interior external pressure, steel cylinder and steel wire can be made to corrode by the liquid that socket end inwall ring crack seam penetrates into, reduce the structural-load-carrying capacity of pipeline, reduce pipeline service life, lead to steel cylinder or steel wire to rupture when serious, cause pipe explosion accident to occur.
Content of the invention
The purpose of this utility model is to provide a kind of socket cracking structure of Prestressed concrete cylinder pipe, steel fiber reinforced concrete is adopted by prearrangement of deformation amount seam, the thin steel loop of socket end tube core liner and socket end tube core outside socket end abnormity steel loop, solves the problems, such as the socket end internal-wall concrete ring shake that PCCP is likely to occur in production, handling and stacking process.
The technical solution of the utility model is：A kind of socket cracking structure of Prestressed concrete cylinder pipe，It is included socket abnormity steel loop、Steel cylinder、The bellmouth abnormity tubular steel structure that welds together successively of steel loop and be cast in the outer tube core concrete of tubular steel structure outer surface and be cast in the inner tube core concrete of tubular steel structure inner surface，The top pouring socket abnormity steel loop described in height distance of described outer tube core concrete and inner tube core concrete is 500-600mm，The top soldered 10-20mm that outer steel fiber reinforced concrete is higher than steel cylinder in described tubular steel structure is poured on described outer tube core concrete，Fill concrete in reserved 10mm movement joint between outer steel fiber reinforced concrete and steel cylinder，Interior steel fiber reinforced concrete is poured on said inner tube core concrete to the top of socket abnormity steel loop，It is provided with the thick thin steel loop of liner of 1-3mm in the inwall of interior steel fiber reinforced concrete；It is wound around compressor wire on the external cylindrical surface of described outer tube core concrete and outer steel fiber reinforced concrete and roller penetrates mortar cover; compressor wire one end be fixed on pre-buried on the first prestressing force anchoring part in outer steel fiber reinforced concrete, the other end is fixed on the second prestressing force anchoring part being embedded in outer tube core concrete.
Effect of the present utility model and benefit：This Prestressed concrete cylinder pipe（PCCP）Socket cracking structure, adopt three kinds of concrete measures such as steel fiber reinforced concrete including prearrangement of deformation amount seam, the thin steel loop of socket end tube core liner and socket end tube core outside socket end abnormity steel loop；It is lined with thin steel loop in PCCP socket end using steel fiber reinforced concrete and in its inwall, for improving the bending resistance of socket end, opposing is wound around, because of pipeline, the additional bending moment that compressor wire is led to, and reduces socket end tube core and produces larger valgus deformity；Prearrangement of deformation amount seam outside socket end abnormity steel loop, meets pipe deforming and coordinates and reduce additional bending moment simultaneously, prevent ring crack from shifting to tube core internal-wall concrete, can significantly improve the PCCP quality of production and its military service durability；This cracking structure can realize slitless connection with the existing PCCP mode of production, has advantage simple to operate, with low cost.
Brief description
Fig. 1 is a kind of socket cracking structure figure of Prestressed concrete cylinder pipe.
Fig. 2 is the Prestressed concrete cylinder pipe structure chart that prearrangement of deformation amount stitches in the fabrication process.
In figure：1st, socket abnormity steel loop, 1a, annular seal groove, 2, bellmouth abnormity steel loop; 2a, bellmouth abnormity steel loop enlarging, 3, steel cylinder, 4, outer tube core concrete; 4a, inner tube core concrete, 5, steel loop template, 6, the thin steel loop of liner; 7th, outer steel fiber reinforced concrete, 7a, interior steel fiber reinforced concrete, 8, concrete; 8a, movement joint, 9, compressor wire, 10, mortar cover; 11st, the first prestressing force anchoring part, 11a, the second prestressing force anchoring part.
Specific embodiments
Fig. 1 shows a kind of socket cracking structure figure of Prestressed concrete cylinder pipe.In figure, the socket cracking structure of this Prestressed concrete cylinder pipe is included socket abnormity steel loop 1, steel cylinder 3, bellmouth abnormity steel loop 2 tubular steel structure welding together successively and the outer tube core concrete 4 being cast in tubular steel structure outer surface and the inner tube core concrete 4a being cast in tubular steel structure inner surface.The top pouring socket abnormity steel loop 1 described in height distance of outer tube core concrete 4 and inner tube core concrete 4a is 568mm, the top soldered 15mm that outer steel fiber reinforced concrete 7 is higher than steel cylinder 3 in described tubular steel structure is poured on outer tube core concrete 4, fill concrete 8 in reserved 10mm movement joint between outer steel fiber reinforced concrete 7 and steel cylinder 3, interior steel fiber reinforced concrete 7a is poured on inner tube core concrete 4a to the top of socket abnormity steel loop 1, be provided with the thick thin steel loop of liner 6 of 1.5mm in the inwall of interior steel fiber reinforced concrete 7a.It is wound around compressor wire 9 on the external cylindrical surface of outer tube core concrete 4 and outer steel fiber reinforced concrete 7 and roller penetrates mortar cover 10; compressor wire 9 one end be fixed on pre-buried on the first prestressing force anchoring part 11 in outer steel fiber reinforced concrete 7, the other end is fixed on the second prestressing force anchoring part 11a being embedded in outer tube core concrete 4.
Fig. 2 shows the Prestressed concrete cylinder pipe structure chart that prearrangement of deformation amount stitches in the fabrication process.
The manufacture method of the socket cracking structure of this Prestressed concrete cylinder pipe adopts the following step：
The first step, in the tube core concreting stage of Prestressed concrete cylinder pipe, socket abnormity steel loop 1 and bellmouth abnormity steel loop 2 are pressed design requirement with steel cylinder 3 and are welded, and hangs on the mold base of tube core internal model；
Second step, lifting external mold, installation, the thin steel loop of secure liner 6 outside socket end core mold plate；
3rd step, in tube core internal model and external mold away from socket abnormity steel loop 1 top 568mm place's setting labelling, then pour outer tube core concrete 4 and inner tube core concrete 4a to mark；
4th step, the outer steel fiber reinforced concrete 7 pouring suitable match ratio and interior steel fiber reinforced concrete 7a, pouring height is 200mm；
5th step, placement steel loop template 5, the internal diameter 10mm bigger than the external diameter of steel cylinder 3 of wherein steel loop template 5；
6th step, continue to pour outer steel fiber reinforced concrete 7 and interior steel fiber reinforced concrete 7a, the movement joint 8a retaining between steel cylinder 3 and steel loop template 5 does not pour；
7th step, strongly vibrate, form concrete tube core, by design requirement maintenance；
8th step, the demoulding, including internal model, external mold and steel loop template 5；
9th step, tube core, through maintenance, when concrete strength reaches the 70% of design strength, enter and are wound around compressor wire 9 operation；
Tenth step, movement joint 8a surface is picked chisel, remove floating ash, disintegrating slag, after clear water is rinsed well, with concrete eight filling, vibration compacting, by design requirement maintenance；
11st step, penetrate mortar cover 10 by design specification roller, and carry out maintenance.
The cracking structure of the prevention PCCP socket end inwall ring crack that this utility model is proposed, reduce the led to additional bending moment value of compressor wire winding by arranging movement joint, obvious to ring crack preventive effect, the thin steel loop of liner and socket end significantly improve the bending resistance of tube core using steel fiber reinforced concrete, and the thin steel loop of liner also can play positive role for the impervious of socket simultaneously.
Claims (1)
1. the socket cracking structure of a kind of Prestressed concrete cylinder pipe, it is included socket abnormity steel loop（1）, steel cylinder（3）, bellmouth abnormity steel loop（2）The tubular steel structure welding together successively and the outer tube core concrete being cast in tubular steel structure outer surface（4）With the inner tube core concrete being cast in tubular steel structure inner surface（4a）It is characterised in that：Described outer tube core concrete（4）With inner tube core concrete（4a）Pour described in height distance socket abnormity steel loop（1）Top be 500-600mm, described outer tube core concrete（4）On pour outer steel fiber reinforced concrete（7）Higher than steel cylinder in described tubular steel structure（3）Top soldered 10-20mm, in outer steel fiber reinforced concrete（7）With steel cylinder（3）Between fill concrete in reserved 10mm movement joint（8）, said inner tube core concrete（4a）On pour interior steel fiber reinforced concrete（7a）To socket abnormity steel loop（1）Top, in interior steel fiber reinforced concrete（7a）Inwall be provided with the thick thin steel loop of liner of 1-3mm（6）；Described outer tube core concrete（4）With outer steel fiber reinforced concrete（7）External cylindrical surface on be wound around compressor wire（9）Penetrate mortar cover with roller（10）, compressor wire（9）One end be fixed on pre-buried in outer steel fiber reinforced concrete（7）In the first prestressing force anchoring part（11）On, the other end is fixed on and is embedded in outer tube core concrete（4）In the second prestressing force anchoring part（11a）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361723.9U CN205978859U (en) | 2016-04-27 | 2016-04-27 | Prestressing force steel cylinder concrete pipe's anti structure of splitting of socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361723.9U CN205978859U (en) | 2016-04-27 | 2016-04-27 | Prestressing force steel cylinder concrete pipe's anti structure of splitting of socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978859U true CN205978859U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620361723.9U Withdrawn - After Issue CN205978859U (en) | 2016-04-27 | 2016-04-27 | Prestressing force steel cylinder concrete pipe's anti structure of splitting of socket |
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| CN (1) | CN205978859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736851A (en) * | 2016-04-27 | 2016-07-06 | 大连理工大学 | Insertion opening crack resisting structure for prestressed concrete cylinder pipes and manufacturing method of structure |
-
2016
- 2016-04-27 CN CN201620361723.9U patent/CN205978859U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736851A (en) * | 2016-04-27 | 2016-07-06 | 大连理工大学 | Insertion opening crack resisting structure for prestressed concrete cylinder pipes and manufacturing method of structure |
| CN105736851B (en) * | 2016-04-27 | 2017-08-25 | 大连理工大学 | The socket cracking structure and its manufacture method of a kind of Prestressed concrete cylinder pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20170825 |
|
| AV01 | Patent right actively abandoned |