CN109723915A - PCCP pipeline prestressed reinforcement structure and reinforcement means - Google Patents
PCCP pipeline prestressed reinforcement structure and reinforcement means Download PDFInfo
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- CN109723915A CN109723915A CN201711342686.2A CN201711342686A CN109723915A CN 109723915 A CN109723915 A CN 109723915A CN 201711342686 A CN201711342686 A CN 201711342686A CN 109723915 A CN109723915 A CN 109723915A
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Abstract
The present invention relates to pipeline construction fields, disclose a kind of PCCP pipeline prestressed reinforcement structure and reinforcement means, the PCCP pipeline prestressed reinforcement structure includes pipeline (1), the steel beam (2) being wound on pipeline periphery, what is be arranged on pipeline backing plate (3) and the anchoring section that is arranged on backing plate, there is anchoring section the circumferential direction along pipeline to be sequentially distributed first side and second side, bottom groove (13) are provided on anchoring section, first through hole (11) and the second through-hole (12), steel beam includes sequentially connected first part, second part and Part III, first part passes through first through hole and winding pipeline from first side, second part passes through bottom groove and winding pipeline from first side, Part III passes through the second through-hole from first side.The application extends steel beam along the direction of the through-hole of anchoring section, the contact between seamed edge to mitigate the end face of steel beam and first through hole and the second through-hole, and breakage and stress of the steel beam in stretching process is avoided to concentrate.
Description
Technical field
The present invention relates to pipeline construction fields, more particularly to a kind of PCCP pipeline prestressed reinforcement structure and reinforcing side
Method.
Background technique
Prestressed concrete cylinder pipe road (prestressed concrete cylinder pipe, hereinafter referred to as PCCP
Pipeline) the composite construction pipeline that is made of tube core concrete, high-strength prestressed steel wire, mortar cover, with traditional pipe
Road is compared, PCCP pipeline have bearing capacity is strong, water passing capacity is strong, it is substantially water-tight, be not easy burn into and fast and convenient can pacify
Dress has the advantages that good adaptability and shock resistance are strong to ground.PCCP pipeline is as pressure conduit, in addition to earthing lotus
It carries, outside transport load and interim mound load, has mainly undertaken water ballast(ing) in pressure.PCCP pipeline compressor wire is broken
When, to guarantee pipe safety operation, reinforcement should be carried out to pipeline configuration, can bear high internal water pressure is such pipeline configuration safety
Thus stable key is most effective reinforcement technique using external prestress strengthening method.
Conventional prestress strengthening method includes: prestressing force steel loop reinforcement means, pre-stressed carbon fiber plate reinforcing side at present
Method and prestressed strand are reinforced, and are analyzed one by one below for these types of method:
For prestressing force steel loop reinforcement means, apply prestressing force steel loop on PCCP fracture of wire pipe, this method construction is made
Industry is convenient, but the prestressing force applied is limited, it is difficult to meet the structure safety requirements of PCCP fracture of wire pipe under water pressures in height.
For pre-stressed carbon fiber plate reinforcement means, pre-stressed carbon fiber plate system by carbon fiber board, fixed end anchorage,
Fixing end support, stretching end anchorage, stretching end support, stretching end tooling and carbon fiber board press strip composition, other than carbon fiber board,
Other assemblies are required to be fixed with bolt, are based on PCCP pipeline configuration characteristic, mortar cover and tube core concrete can not punch
Fixing bolt, and pre-stressed carbon fiber plate is difficult in screed surface mount, answers this pre-stressed carbon fiber plate to be not suitable for PCCP disconnected
Fiber tube pipe External prestressed is reinforced.
For prestressed strand reinforcement means, prestress wire is flexible, and composition steel beam is convenient for twining on round tube
Around anchorage size is small, simple installation.Especially there is coarse mortar cover in the outer surface PCCP, and steel strand wires are in mortar cover
On be easily installed, exploitativeness is good.Prestressed strand ruggedized construction is usually used in coal bunker, cement bin, treatment tank, nuclear power at present
The buildings such as containment are reinforced.
Although the reinforcing of the theoretically convenient PCCP pipeline of prestressed strand reinforcement means, is deposited in specific implementation
In more problem, specifically, if using the annular prestressing without bondn steel Shu Jiagu being generally used in building
Structure, will lead to that anchoring effect is undesirable, and reason mainly includes the following aspects: firstly, not having in the structure of PCCP pipeline
There are tension slot groove and buttress to be used to that anchorage is installed, anchorage need to be directly installed on structure curved surface, and such mounting means will lead to steel
Seamed edge of the beam in the end face of anchorage is in contact, and damaged and stress may occur in stretching process and concentrate；Secondly, steel beam ring around
Tensioning operation is directly carried out after PCCP pipeline outer wall, is completed ability casting concrete protective layer after pre-stress construction, is caused steel
Beam does not have the constraint of concrete in stretching process, is easy to happen the relative displacement with component, influences the outer Prestressing reinforcement of structure
Effect.Therefore, it can be said that the prestressed strand ruggedized construction and mounting technique currently used for PCCP pipe strengthening still belong to blank.
Summary of the invention
The purpose of the invention is to overcome utilization prestressed strand reinforcement means of the existing technology to reinforce PCCP to manage
The effect in road, which is paid no attention to, to think over a problem, and provides a kind of PCCP pipeline prestressed reinforcement structure, the PCCP pipeline prestressed reinforcement structure
Consolidation effect can be effectively improved.
To achieve the goals above, one aspect of the present invention provides a kind of PCCP pipeline prestressed reinforcement structure, PCCP pipe
Road prestressed reinforcement structure include pipeline, the steel beam being wound on the pipeline periphery, the backing plate being arranged on the pipeline with
And the anchoring section on the backing plate is set, there is the anchoring section circumferential direction along the pipeline to be sequentially distributed first side and the
Two side faces, are provided with bottom groove, first through hole and the second through-hole on the anchoring section, the first through hole and described second logical
Hole penetrates through the first side and the second side, and the bottom groove is formed in the bottom of the anchoring section described
Cavity is formed between anchoring section and the backing plate, the bottom groove extends to the second side from the first side,
In, the steel beam includes sequentially connected first part, second part and Part III, and the first part is from first side
Face passes through the first through hole and winds the pipeline, and the second part passes through the bottom groove simultaneously from the first side
The pipeline is wound, the Part III passes through second through-hole from the first side.
Preferably, the first through hole and second through-hole are straight hole, and the first through hole is located at described the
The position of the port of one side is higher than the position of the port positioned at the second side of the first through hole, second through-hole
The port positioned at the second side position be higher than second through-hole the port positioned at the first side position.
Preferably, the anchoring section includes the first anchor slab, the second anchor slab and cushion block, first anchor slab and second anchor
Plate is separately positioned on the first face and the second face of the cushion block to limit the first side and the second side, the cushion block
On be provided with the first cushion block through-hole and the second cushion block through-hole, the first anchor slab hole is provided on first anchor slab with described first
Cushion block through-hole forms the first through hole, be provided on second anchor slab the second anchor slab hole with the second cushion block through-hole shape
At second through-hole.
Preferably, the cushion block forms shape tapered upwards, and first face and the second face are tilted in relation to each other
Plane, first anchor slab and second anchor slab are respectively parallel to first face and second face.
Preferably, the first cushion block through-hole and/or the second cushion block through-hole there is first end and position to be higher than described
The second end of first end, the latus rectum of the first end are greater than the latus rectum of its second end.
Preferably, the first face and the second face of the cushion block shape between first anchor slab and second anchor slab respectively
At there is the arc contact surface being fitted to each other.
Preferably, the PCCP pipeline prestressed reinforcement structure includes shield, the shield be arranged on the backing plate with
The anchoring section is coated, is filled with anti-corrosion material in the shield.
Preferably, the recess portion for positioning the anchoring section is provided on the backing plate.
Preferably, the both ends of the circumferential direction along the pipeline of the backing plate are formed with the arc for being bonded the pipe bending
Face.
Second aspect of the present invention provides a kind of PCCP pipeline prestress strengthening method, which comprises S1: in pipeline
Backing plate is installed on circumferential surface；S2: installing anchoring section on the backing plate, and there is the anchoring section circumferential direction along the pipeline successively to divide
The first side and second side of cloth are provided with bottom groove and first through hole and the second through-hole on the anchoring section, described
First through hole and second through-hole penetrate through the first side and the second side, and the bottom groove is formed in described
To form cavity between the anchoring section and the backing plate, the bottom groove prolongs from the first side for the bottom of anchoring section
Reach the second side；S3: steel beam is penetrated from the port positioned at the first side of the first through hole and from described
The port positioned at the second side of first through hole is pierced by and winds the pipeline, then described from being located at for the bottom groove
The port of first side penetrates and is pierced by and winds the pipeline from the port positioned at the second side of the bottom groove,
It is finally penetrated from the port positioned at the first side of second through-hole and is located at described second from second through-hole
The port of side is pierced by.
Preferably, which comprises after step S3, shield is covered on the anchoring section, and in the shield
Insert anti-corrosion material.
Through the above technical solutions, using anchoring section, backing plate and steel beam in ruggedized construction provided by the present application, due to
Steel beam can reasonably run through first through hole, the second through-hole and bottom groove in anchoring section, so that anchoring section is in steel beam
Constrained on backing plate securely under the action of power, the application can be arranged in anchoring section as the case may be required for the
One through-hole and the second through-hole, enable steel beam first part and Part III as much as possible along first through hole and second
The extending direction of through-hole extends, the contact between seamed edge to mitigate the end face of steel beam and first through hole and the second through-hole, from
And it avoids steel beam and damaged and stress concentration occurs in stretching process；The design of bottom groove can effectively reduce steel beam and
The mounting height of corner cut and entire anchoring system between pipeline enables entire anchoring system uniformly to apply to pipeline
Along the radial compressive pre-stress of pipeline, so as to improve Prestressing effect outside pipeline.
Detailed description of the invention
Fig. 1 is the sectional view of PCCP pipeline prestressed reinforcement structure according to the preferred embodiment of the present invention；
Fig. 2 is the schematic diagram of the first side of the anchoring section of the PCCP pipeline prestressed reinforcement structure of Fig. 1；
Fig. 3 is the schematic diagram of the second side of the anchoring section of the PCCP pipeline prestressed reinforcement structure of Fig. 1；
Fig. 4 is the left view of the PCCP pipeline prestressed reinforcement structure of Fig. 1；
Fig. 5 is the right view of the PCCP pipeline prestressed reinforcement structure of Fig. 1；
Fig. 6 is a kind of schematic diagram of embodiment of the cushion block of the PCCP pipeline prestressed reinforcement structure of Fig. 1；
Fig. 7 is the schematic diagram of the another embodiment of the cushion block of the PCCP pipeline prestressed reinforcement structure of Fig. 1.
Description of symbols
1- pipeline 2- steel beam 3- backing plate 4- the first anchor slab the second anchor slab of 5-
6- cushion block 7- the first cushion block through-hole 8- shield 9- work clip sheet 10- anti-corrosion material
11- first through hole 12- the second through-hole 13- bottom groove
21- the first anchor slab the second anchor slab of hole 22- hole
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " typically refers to
Upside, downside, left side and the right side of page shown in FIG. 1.
The present invention provides a kind of PCCP pipeline prestressed reinforcement structure, which includes pipeline
1, the steel beam 2 that is wound on 1 periphery of pipeline, the backing plate 3 being arranged on the pipeline 1 and it is arranged on the backing plate 3
Anchoring section, the anchoring section, which has, is sequentially distributed first side and second side, the anchoring section along the circumferential direction of the pipeline 1
On be provided with bottom groove 13, first through hole 11 and the second through-hole 12, the first through hole 11 and second through-hole 12 pass through
Lead to the first side and the second side, the bottom groove 13 is formed in the bottom of the anchoring section in the anchoring
Cavity is formed between portion and the backing plate 3, the bottom groove 13 extends to the second side from the first side,
In, the steel beam 2 includes sequentially connected first part, second part and Part III, and the first part is from described first
Side passes through the first through hole 11 and winds the pipeline 1, and the second part passes through the bottom from the first side
Groove 13 simultaneously winds the pipeline 1, and the Part III passes through second through-hole 12 from the first side.
With reference to structure shown in FIG. 1, backing plate 3 can select steel material and by binder paste PCCP pipeline (i.e.
Pipeline 1) outer peripheral surface on；Steel beam 2 refers to unbonded prestressing tendon common in prestressed structure, that is, band anti-corrosion separation layer
With the presstressed reinforcing steel or steel strand wires of oversheath, steel beam 2 preferably includes epoxy spray steel strand and is arranged on the outside of steel strand wires
Two layers of PE (polyethylene) sheath, epoxy spray steel strand, which refers to, is coated with one layer of fine and close epoxy coating on steel strand wires surface layer, to steel
Twisted wire carries out anti-corrosion protection, and anti-corrosion grease is filled between two layers of sheath and between sheath and steel strand wires, and two layers of shield
Filled with anti-corrosion grease, it can be achieved that free to slide between two layers of sheath between set.Since soap-free emulsion polymeization steel beam is in stretching process
In can generate biggish frictional force with aqueduct, the PE sheath of soap-free emulsion polymeization steel beam be easy in friction process it is damaged, when adopting
When with single layer PE unbonded prestressing tendon, it will be unable to carry out effective protection to steel strand wires again after PE is damaged, draw steel strand wires in height
Accelerated corrosion under stress, causes permanent prestressing force to reduce, and when use pair PE soap-free emulsion polymeization steel beam, when outer layer PE sheath breakage,
There are also internal layer PE sheaths to protect to steel strand wires.
It can be set the recess portion for installing anchoring section on backing plate 3, for example match with the bottom shape of anchoring section recessed
Slot can quickly be positioned using the groove to anchoring section is carried out.After backing plate 3 and anchoring section are installed in place, by steel beam 2 from
The port that anchoring section first through hole 11 is located at the first side of anchoring section penetrates and is located at the end of second side from first through hole 11
Mouth is pierced by, and then winding pipeline 1, i.e., extend up to the first side that steel beam 2 extends again to anchoring section along the circumferential surface of pipeline 1
Face, then be pierced by via bottom groove 13 from the second side of anchoring section, and winding pipeline 1 again, the i.e. week again along pipeline 1
Face extends up to the first side that steel beam 2 extends again to anchoring section, is then located at the positioned at anchoring section from the second through-hole 12
The port of one side penetrates and is pierced by from the port that the second through-hole 12 is located at second side.
Wherein, the first part of steel beam 2 and second part can wind multi-turn on pipeline 1, as long as meeting second part
Bottom groove 13 and Part III can be penetrated from first side can penetrate second through-hole 12 from first side.
It should be noted that PCCP pipeline prestressed reinforcement structure provided by the present application can be according to the length of PCCP pipeline
Degree is positioned apart from multiple anchoring sections and the backing plate 3 cooperated with anchoring section, steel beam 2 etc. in PCCP pipeline.
In this application, anchoring section is constrained on backing plate 3 securely under the action of the power of steel beam 2, and the application can be with
First through hole 11 required for being arranged in anchoring section as the case may be and the second through-hole 12, so that the first part of steel beam 2
And Part III can as much as possible along the extending direction of first through hole 11 and the second through-hole 12 extend, with mitigate steel beam and
Contact between the seamed edge of the end face of first through hole 11 and the second through-hole 12, so that steel beam 2 be avoided to occur in stretching process
Damaged and stress is concentrated, i.e., so that the part of steel beam 2 being located in first through hole 11 and the second through-hole 12 and adjacent steel beam 2
The part being located at outside first through hole 11 and the second through-hole 12 between as far as possible along same linear extension；The design of bottom groove 13
The mounting height that the corner cut and entire anchoring system between steel beam 2 and pipeline 1 can be effectively reduced, so that entire anchoring system
The radial compressive pre-stress along pipeline 1 can uniformly be applied to pipeline 1.
In addition, the face that backing plate 3 is contacted with pipeline 1 can select cambered surface identical with 1 curvature of pipeline, guarantee backing plate 3 and pipe
It is closely bonded between road 1；And when pipeline 1 is when being relatively large in diameter so that the contact surface between pipeline 1 and backing plate 3 tends to level,
The bottom surface of backing plate 3 can be set to plane.Also it may be preferred that the both ends shape of the circumferential direction along the pipeline 1 of the backing plate 3
At there is a fitting curved cambered surface of the pipeline 1, for example, can the seamed edge that is contacted with steel beam 2 of the both ends to backing plate 3 fillet is set, with
The sheath of the steel beam 2 in stretching process is avoided to be scratched by seamed edge.
Preferably, the first through hole 11 and second through-hole 12 are straight hole, and the first through hole 11 is located at
The position of the port of the first side is higher than the position of the port positioned at the second side of the first through hole 11, described
The position of the port positioned at the second side of second through-hole 12 is located at the first side higher than second through-hole 12
Port position.
Structure shown in referring to figs. 2 and 3, first through hole 11 and the second through-hole 12, which are set as straight trip hole, can be convenient for running through
Steel beam 2, when steel beam 2 is penetrated from the port positioned at the first side of first through hole 11 and is located at second from first through hole 11
When the port of side is pierced by, steel beam 2 has the trend extended obliquely at this time；Similarly, when steel beam 2 is from the second through-hole 12
When penetrating positioned at the port of the first side and being pierced by from the port positioned at second side of the second through-hole 12, steel beam 2 has
One trend extended obliquely upward, consequently facilitating the winding of steel beam 2, reduce tangent angle between steel beam 2 and pipeline 1 and
The mounting height of ruggedized construction entirety.
Preferably, the anchoring section includes the first anchor slab 4, the second anchor slab 5 and cushion block 6, first anchor slab 4 and described the
Two anchor slabs 5 are separately positioned on the first face and the second face of the cushion block 6 to limit the first side and the second side, institute
It states and is provided with the first cushion block through-hole 7 and the second cushion block through-hole on cushion block 6, the first anchor slab hole 21 is provided on first anchor slab 4
To form the first through hole 11 with the first cushion block through-hole 7, be provided on second anchor slab 5 second anchor slab hole 22 with
The second cushion block through-hole forms second through-hole 12.
With reference to structure shown in FIG. 1, anchorage part is three parts, the cushion block 6 that is mounted on backing plate 3 and is separately positioned on
First face of cushion block 6 and first anchor slab 4 in the second face and the second anchor slab 5, with logical with the first cushion block through-hole 7 and the second cushion block respectively
First through hole 11 and the second through-hole 12 is collectively formed in hole, wherein in the position that the first anchor slab 4 and the second anchor slab 5 join with steel beam 2
It sets, work clip sheet 9 is provided on steel beam 2, it is effective that work clip sheet 9 cooperates the first anchor slab 4 and the second anchor slab 5 to carry out presstressed reinforcing steel
Clamping, to lock prestressing force.
In Fig. 2 and embodiment shown in Fig. 3, two groups of steel beams 2, correspondingly, anchoring section are provided on cushion block 6 simultaneously
Including two group of first anchor slab 4 and the second anchor slab 5, Fig. 2 shows two single holes work anchor slabs on the first face for being mounted on cushion block 6
(i.e. the first anchor slab 4), Fig. 3 show diplopore work anchor slab (i.e. the second anchor slab 5) being mounted on cushion block 6 on second face,
Two single hole work anchor slabs can also be installed as two group of second anchor slab 5 on the second face of certain cushion block 6, but select one
Diplopore work anchor slab can make the overall structure of anchoring section more compact.
Preferably, the cushion block 6 forms tapered shape upwards, and the first face and the second face be tilted in relation to each other it is flat
Face, the preferably section of cushion block 6 are in isosceles trapezoid, and first anchor slab 4 and second anchor slab 5 are respectively parallel to described first
Face and second face, then the first anchor slab hole 21 in the first anchor slab 4 can form that straight trip extends with the first cushion block through-hole 7
One through-hole 11, similarly it is logical can to form straight trip extends second with the second cushion block through-hole for the second anchor slab hole 22 in the second anchor slab 5
Hole 12.
In another embodiment, the first face and the second face of the cushion block 6 respectively with first anchor slab 4 and described
Also could be formed with the arc contact surface being fitted to each other between second anchor slab 5, arc contact surface can in stretching process basis
The different-diameter of pipeline 1 adjusts the setting angle of steel beam 2, and in adjustment process, the first anchor slab 4 and the second anchor slab 5 can begin
Eventually and cushion block 6 keeps face contact.
For the ease of adjusting the setting angle of steel beam 2, the first cushion block through-hole 7 and/or the second cushion block through-hole
The latus rectum of first end is greater than the latus rectum of its second end, wherein the first cushion block through-hole 7 and/or the second cushion block through-hole
The position of first end is lower than the position of its second end.
Fig. 6 shows a kind of embodiment of cushion block 6, and the first cushion block through-hole 7 is the shape being gradually expanded；Fig. 7 is shown
Be cushion block 6 another embodiment, the first cushion block through-hole 7 be gradually increased it is ladder-like.Wherein, the first anchor slab hole 21 is not
Greater than the aperture of the first cushion block through-hole 7, need when the setting angle for adjusting steel beam 2 in this way (for example the diameter of pipeline 1 becomes
Change), it so that the first anchor slab hole 21 is directed at the different location of the first cushion block through-hole 7, enhance versatility.
Since the setting form of the second cushion block through-hole is identical with the setting form of the first cushion block through-hole, here just no longer
The setting form of the second cushion block through-hole is summarized one by one, and correspondingly, the second anchor slab hole 22 is not more than the aperture of the second cushion block through-hole.
Preferably, the PCCP pipeline prestressed reinforcement structure includes shield 8, and the shield 8 is arranged on the backing plate 3
To coat the anchoring section, anti-corrosion material 10 is filled in the shield 8.
With reference to the structure of Fig. 4 and Fig. 5, shield 8 can be with effective protection anchoring section, additionally due to the end face of steel beam 2 is not protected
Sheath, shield 8 can protect the end face of steel beam 2.Wherein, shield 8 can be bolted on backing plate 3, in shield 8 and pad
The sealing materials such as rubber pad can also be set between plate 3, to increase leakproofness.The top of shield 8 is provided with grout hole, so as to
Anti-corrosion material 10 is poured into shield 8；The side of shield 8 is provided with the opening for passing through steel beam 2, on the position of opening
Flexible rubber casing is installed and avoids the abrasion between steel beam 2 and the side wall of shield 8, and flexible sleeve has to protect steel beam 2
Good flexibility can adapt to the steel beam 2 of different extension angle.
In addition, according to another aspect of the present invention, the present invention also provides a kind of PCCP pipeline prestress strengthening method, institutes
The method of stating includes:
S1: backing plate 3 is installed on the circumferential surface of pipeline 1；S2: installing anchoring section on the backing plate 3, and the anchoring section has
The first side and second side being sequentially distributed along the circumferential direction of the pipeline 1, be provided on the anchoring section bottom groove 13 with
And first through hole 11 and the second through-hole 12, the first through hole 11 and second through-hole 12 penetrate through the first side and institute
Second side is stated, the bottom groove 13 is formed in the bottom of the anchoring section between the anchoring section and the backing plate 3
Cavity is formed, the bottom groove 13 extends to the second side from the first side；S3: by steel beam 2 from described first
The port positioned at the first side of through-hole 11 penetrates and from the port positioned at the second side of the first through hole 11
It is pierced by and is wound the pipeline 1, then is penetrated from the port positioned at the first side of the bottom groove 13 and from the bottom
The port positioned at the second side of portion's groove 13 is pierced by and winds the pipeline 1, finally from the position of second through-hole 12
It penetrates in the port of the first side and is pierced by from the port positioned at the second side of second through-hole 12.In addition,
After step S3, shield 8 can also be selected, shield 8 is covered on the anchoring section, inserts anti-corrosion material in the shield 8
10。
Wherein, backing plate 3 can select steel material and paste the outer peripheral surface in PCCP pipeline (i.e. pipeline 1) by binder
On；Steel beam 2 can wind multi-turn on pipeline 1, as long as bottom groove 13 can be penetrated from first side by meeting second part
And Part III can penetrate second through-hole 12 from first side；Anti-corrosion material 10 can pass through the top of shield 8
The grout hole of portion's setting enters in shield 8.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (11)
1. a kind of PCCP pipeline prestressed reinforcement structure, which is characterized in that the PCCP pipeline prestressed reinforcement structure includes pipeline
(1), backing plate (3) and setting of the steel beam (2), setting on the pipeline (1) periphery on the pipeline (1) are wound in institute
The anchoring section on backing plate (3) is stated, there is the anchoring section circumferential direction along the pipeline (1) to be sequentially distributed first side and second side
Face is provided with bottom groove (13), first through hole (11) and the second through-hole (12), the first through hole (11) on the anchoring section
The first side and the second side are penetrated through with second through-hole (12), the bottom groove (13) is formed in described
The bottom of anchoring section between the anchoring section and the backing plate (3) to form cavity, and the bottom groove (13) is from described
One side extends to the second side,
Wherein, the steel beam (2) includes sequentially connected first part, second part and Part III, the first part from
The first side is passed through and the first through hole (11) and is wound the pipeline (1), and the second part is from the first side
It across the bottom groove (13) and winds the pipeline (1), the Part III passes through described second from the first side
Through-hole (12).
2. PCCP pipeline prestressed reinforcement structure according to claim 1, which is characterized in that the first through hole (11) and
Second through-hole (12) is straight hole, and the position of the port positioned at the first side of the first through hole (11) is higher than
The position of the port positioned at the second side of the first through hole (11), second through-hole (12) are located at described second
The position of the port of side is higher than the position of the port positioned at the first side of second through-hole (12).
3. PCCP pipeline prestressed reinforcement structure according to claim 2, which is characterized in that the anchoring section includes first
Anchor slab (4), the second anchor slab (5) and cushion block (6), first anchor slab (4) and second anchor slab (5) are separately positioned on the pad
The first face and the second face of block (6) are provided with first on the cushion block (6) to limit the first side and the second side
Cushion block through-hole (7) and the second cushion block through-hole, be provided on first anchor slab (4) the first anchor slab hole (21) with first pad
Block through-hole (7) forms the first through hole (11), and the second anchor slab hole (22) is provided on second anchor slab (5) with described the
Two cushion block through-holes form second through-hole (12).
4. PCCP pipeline prestressed reinforcement structure according to claim 3, which is characterized in that the cushion block (6) formed to
Upper tapered shape, first face and the second face are the plane being tilted in relation to each other, first anchor slab (4) and described second
Anchor slab (5) is respectively parallel to first face and second face.
5. PCCP pipeline prestressed reinforcement structure according to claim 3, which is characterized in that the first cushion block through-hole
(7) and/or there is the second cushion block through-hole first end and position to be higher than the second end of the first end, and the first end is led to
Diameter is greater than the latus rectum of its second end.
6. PCCP pipeline prestressed reinforcement structure according to claim 3, which is characterized in that the first of the cushion block (6)
Face and the second face are formed with the arc contact being fitted to each other between first anchor slab (4) and second anchor slab (5) respectively
Face.
7. PCCP pipeline prestressed reinforcement structure according to claim 1, which is characterized in that the PCCP pipeline prestressing force
Ruggedized construction includes shield (8), and the shield (8) is arranged on the backing plate (3) to coat the anchoring section, the shield
(8) anti-corrosion material (10) are filled in.
8. PCCP pipeline prestressed reinforcement structure according to claim 1, which is characterized in that be arranged on the backing plate (3)
There is the recess portion for positioning the anchoring section.
9. PCCP pipeline prestressed reinforcement structure described in any one of -8 according to claim 1, which is characterized in that the pad
The both ends of the circumferential direction along the pipeline (1) of plate (3) are formed with the fitting curved cambered surface of the pipeline (1).
10. a kind of PCCP pipeline prestress strengthening method, which is characterized in that the described method includes:
S1: backing plate (3) are installed on the circumferential surface of pipeline (1)；
S2: installing anchoring section on the backing plate (3), and there is the anchoring section circumferential direction along the pipeline (1) to be sequentially distributed
First side and second side are provided with bottom groove (13) and first through hole (11) and the second through-hole on the anchoring section
(12), the first through hole (11) and second through-hole (12) penetrate through the first side and the second side, described
Bottom groove (13) is formed in the bottom of the anchoring section to form cavity between the anchoring section and the backing plate (3), institute
It states bottom groove (13) and extends to the second side from the first side；
S3: steel beam (2) is penetrated from the port positioned at the first side of the first through hole (11) and logical from described first
The port positioned at the second side in hole (11) is pierced by and winds the pipeline (1), then the position from the bottom groove (13)
It is penetrated in the port of the first side and is pierced by and twines from the port positioned at the second side of the bottom groove (13)
Around the pipeline (1), finally penetrate from the port positioned at the first side of second through-hole (12) and from described second
The port positioned at the second side of through-hole (12) is pierced by.
11. installation method according to claim 10, which is characterized in that the described method includes: after step S3, by shield
(8) it covers on the anchoring section, and inserts anti-corrosion material (10) in the shield (8).
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| CN201711045733 | 2017-10-31 | ||
| CN2017110457337 | 2017-10-31 |
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| CN201711342686.2A Active CN109723915B (en) | 2017-10-31 | 2017-12-14 | PCCP (prestressed concrete cylinder pipe) prestress reinforcing structure and reinforcing method |
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| CN207555004U (en) * | 2017-10-31 | 2018-06-29 | 北京市水利规划设计研究院 | PCCP pipeline prestressed reinforcement structures |
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| US20020060454A1 (en) * | 2000-11-10 | 2002-05-23 | Toliver Timothy R. | Corrugated pipe structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109723915B (en) | 2024-05-07 |
| CN207555004U (en) | 2018-06-29 |
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