CN207749607U - Structure and pipeline for PCCP pipe bell and spigot seams - Google Patents
Structure and pipeline for PCCP pipe bell and spigot seams Download PDFInfo
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- CN207749607U CN207749607U CN201721620494.9U CN201721620494U CN207749607U CN 207749607 U CN207749607 U CN 207749607U CN 201721620494 U CN201721620494 U CN 201721620494U CN 207749607 U CN207749607 U CN 207749607U
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Abstract
The utility model is related to hydraulic engineering fields, and in particular to a kind of PCCP pipes bell and spigot seam construction and pipeline.It in implementation, will be cleaned out in bell and spigot seam first, SK primers brushed in seam, are then lining into seam with wide plastics seal material；Compacting makes sealing material full of lower space in seam, and combines closely with slotted wall；Epoxy putty is filled thereon to flush, then in epoxy putty external coating elastic polyurethane/polyureas type coating or stickup adhesive tape, as separation layer, the brushing bottom high tenacity epoxy coating on separation layer, the width of epoxy coating relatively isolation slice width 10cm 20cm, then it is laid with impregnated glass fibre band, brushes the epoxy coating of surface layer high tenacity again thereon.The structure and its construction method have the characteristics that construction is simple, anti-backwater pressure are strong, scour ＆ wear resistance energy is good, meet sanitary standard for drinking water while moderately keeping PCCP pipe bell and spigot deformabilities.
Description
Technical field
The utility model is related to hydraulic engineering fields, and in particular to a kind of structure and pipe for PCCP pipe bell and spigot seams
Road.
Background technology
Prestressed concrete cylinder pipe (Prestressed Concrete Cylinder Pipe, abbreviation PCCP pipe) is state
The novel pipeline material that interior nearly more than ten years grow up.The pipeline material is that one kind having high intensity, high permeability resistant and high sealing
Property compound tubing, can be applied to long interval water conveying tunnel, pressure inverted-siphon, power plant cycle Hydraulic Projects sewer pipe etc.,
It is widely adopted in China's water diversion project.
Multiple PCCP pipes are connected into a longer pipeline, socket joint by two connecting pins of PCCP pipes using bell and spigot form
Oral area position seam will produce miniature deformation under foundation settlement or pressure changing, seam may be caused to leak, and long-term oozes
Leakage can influence pipeline foundation stability, bring operational safety hidden danger.PCCP pipes may also be caused to corrode, influence safe operation and
Service life.
The processing of PCCP tubing bell and spigot seams is all a problem of industry all the time, and majority engineering uses water at present
Cement mortar is in the milk or polysulfide sealing compound processing, and cement mortar easy tos produce contraction fissure after grouting processing a period of time, finally
Lead to gap processing failure, brings security risk and seriously affect the service life of tubing.It is right when being handled using polysulfide sealing compound
The interface requirements of brushing are relatively high, it is necessary to and it is clean, otherwise just influence whether the combination of polysulfide sealing compound and interface rings.However
Due to the limitation of faucet structure and construction site condition, to accomplish that basal plane is clean difficult to realize, therefore be easy to cause poly-
It is combined not close at sulphur sealing compound and interface rings, the phenomenon that gap separation occurs, prodigious hidden danger is brought to construction quality.
Since tubing production, construction level, environmental factor, geologic(al) factor etc. cause nozzle seam in PCCP pipe water delivery engineerings
The case where slight leakage, occurs often.Therefore, the design of heavy caliber PCCP pipe bell and spigot seam constructions and method for repairing and mending are effectively blocked,
It is most important to the maintenance of entire water delivery engineering.
In long range PCCP pipe water delivery engineerings, since topography residing for pipeline is different, the seam after causing bell and spigot to be installed
It is of different size.Under the Condition of Environment Changes such as water flow pressure, temperature, geology sedimentation, the maximum of PCCP pipe bell and spigot seams opens
The design requirement of degree is different.Therefore seam sealing material should have certain ductility, and entire seam construction design can root
It is adjusted according to the design requirement of different joint gaps and opening width, to adapt to the dilatation of pipeline joint-seam.
Utility model content
The main purpose of the utility model is to provide a kind of structure, pipeline and construction party for PCCP pipe bell and spigot seams
Method.The structure and construction method have construction is simple, anti-backwater pressure while moderately keeping PCCP pipe bell and spigot deformabilities
The feature that power is strong, scour ＆ wear resistance can be good.
In order to complete above-mentioned purpose, the structure provided by the utility model for PCCP pipe bell and spigot seams includes bottom successively
Glue, plastics seal material, epoxy putty, separation layer, bottom high tenacity epoxy coating, impregnated glass fibre band and surface layer high tenacity
Epoxy coating, wherein primer is used to brush the inner wall in seam, and plastics seal material, epoxy putty, separation layer, bottom are high
Tough epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating are arranged in order.
One Preferable scheme is that, primer be SK primers；The thickness of plastics seal material is 2 centimetres to 5 centimetres；Plasticity is close
Water retaining and sealing strip until closure material；Separation layer is elastic coating or adhesive tape；Elastic coating is that elastic polyurethane or polyureas apply
Layer；Bottom high tenacity epoxy coating, surface layer high tenacity epoxy coating are than being isolated 10 centimetres to 20 centimetres of slice width.
One Preferable scheme is that, the performance of waterstop sealing item is：Elongation is more than 200%, and tensile strength is more than
0.1MPa；Impermeability pressure is more than 2.0MPa；Tensile strength >=5MPa of epoxy putty, the intensity of epoxy putty and concrete bonding
≥4MPa；Elastic polyurethane, polyureas type coating performance be：Elongation at break is more than 200%, and tensile strength is more than 5MPa；Glass
Glass fiber band is plain weave type glass fiber tape, and the performance of glass fiber tape is：Thickness is 0.2 millimeter to 0.4 millimeter, breaks elongation
Rate is more than 3%, and tensile strength is more than 300N/25mm；Epoxy coating is epoxy coating, and the performance of epoxy coating is：Tensile strength
More than 15MPa, elongation at break is more than 5%.
PCCP pipes provided by the utility model connect the pipeline to be formed, including multiple end to end PCCP pipes, and adjacent
The position of birdsmouth between two PCCP pipes forms seam, and seam has an interstitital texture, and interstitital texture includes that primer, plasticity are close
Closure material, epoxy putty, separation layer, bottom high tenacity epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating,
Primer is brushed on the inner wall of seam, the plastics seal material, epoxy putty, separation layer, bottom high tenacity epoxy coating, leaching
Glue glass fiber tape and surface layer high tenacity epoxy coating are arranged in order；Also, primer, plastics seal material, epoxy putty are arranged
In the inside of seam, the separation layer, bottom high tenacity epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating
It is arranged in the outside of seam.
One Preferable scheme is that, primer be SK primers；The thickness of plastics seal material is 2 centimetres to 5 centimetres；Plasticity is close
Water retaining and sealing strip until closure material；Separation layer is elastic coating or adhesive tape；Elastic coating is that elastic polyurethane or polyureas apply
Layer；Bottom high tenacity epoxy coating, surface layer high tenacity epoxy coating are 10 centimetres to 20 centimetres wider than separation layer.
One Preferable scheme is that, the performance of waterstop sealing item is：Elongation is more than 200%, and tensile strength is more than
0.1MPa；Impermeability pressure is more than 2.0MPa；Tensile strength >=5MPa of epoxy putty, the intensity of epoxy putty and concrete bonding
≥4MPa；Elastic polyurethane, polyureas type coating performance be：Elongation at break is more than 200%, and tensile strength is more than 5MPa；Glass
Glass fiber band is plain weave type glass fiber tape, and the performance of glass fiber tape is：Thickness is 0.2 millimeter to 0.4 millimeter, breaks elongation
Rate is more than 3%, and tensile strength is more than 300N/25mm；Epoxy coating is epoxy coating, and the performance of epoxy coating is：Tensile strength
More than 15MPa, elongation at break is more than 5%.
One Preferable scheme is that, if design opening width β≤joint gap ω × 0.03, spacer width a=seams
Width ω+(2~4) cm；Glass bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glasses
Bandwidth b+ (2~4) cm；If designing opening width β ＞ joint gaps ω × 0.03, spacer width a=design opening widths β/
0.03+ (2~4) cm；Glass bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glass fibre belts
Width b+ (2~4) cm.
Construction method provided by the utility model to PCCP pipe bell and spigot seam constructions uses the following steps：
Step 1:Clean seam；
Step 2:In seam inseam brushing primer；
Step 3：Filling is with seam with wide plastics seal material；
Step 4：It is extremely concordant with bell and spigot outer rim that epoxy putty is filled on plastics seal material；
Step 5:In epoxy putty external coating separation layer；
Step 6:Roller coating epoxy impregnation glue, hangs certain time on glass fiber tape；
Step 7:In insulation surface brushing bottom high tenacity epoxy coating；
Step 8：There is the glass fiber tape of epoxy impregnation glue to be laid on bottom high tenacity epoxy coating load, with rolling
Cylinder compacting, excludes the bubble between glass fiber tape and bottom high tenacity epoxy coating；
Step 9：Surface layer high tenacity epoxy coating is brushed on glass fiber tape surface layer.
One Preferable scheme is that, primer be SK primers；The thickness of plastics seal material is 2 centimetres to 5 centimetres, and plasticity is close
The performance of water retaining and sealing strip until closure material, waterstop sealing item is：Elongation is more than 200%, and tensile strength is more than 0.1MPa；It is impervious
Pressure is more than 2.0MPa；Separation layer is elastic coating or adhesive tape, and elastic coating is elastic polyurethane or polyureas type coating, bullet
Property polyurethane, polyureas type coating performance be：Elongation at break is more than 200%, and tensile strength is more than 5MPa；Bottom high tenacity ring
Oxygen coating, surface layer high tenacity epoxy coating are 10 centimetres to 20 centimetres wider than separation layer；The tensile strength of epoxy putty >=
Intensity >=4MPa of 5MPa, epoxy putty and concrete bonding, epoxy coating are epoxy coating, and the performance of epoxy coating is：It draws
It stretches intensity and is more than 15MPa, elongation at break is more than 5%；Glass fiber tape is plain weave type glass fiber tape, the property of glass fiber tape
Can be：Thickness is 0.2 millimeter to 0.4 millimeter, and elongation rate of tensile failure is more than 3%, and tensile strength is more than 300N/25mm.
One Preferable scheme is that, if design opening width β≤joint gap ω × 0.03, spacer width a=seams
Width ω+(2~4) cm；Glass bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glasses
Bandwidth b+ (2~4) cm；If designing opening width β ＞ joint gaps ω × 0.03, spacer width a=design opening widths β/
0.03+ (2~4) cm；Glass bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glass fibre belts
Width b+ (2~4) cm.
The beneficial effects of the utility model are as follows：
1. the utility model proposes the structure for PCCP pipe bell and spigot seams have adapt to seam deformation ability, together
When with outstanding anti-backwater pressure capability, avoid that the bulge easily occurred using spring protective coating material, fall off problem,
Substantially increase the reliability of seam areas antiseepage.
2. the glass fiber tape composite epoxy coating material of the utility model joint surface coating, with dry and moist coagulation
Soil matrix material all has excellent adhesive property, and adhesion strength is more than 3MPa, and impermeability pressure is more than 2.5MPa, anti-leak, compressive resistance
Better performances.
3. the construction is simple of method provided by the utility model, seam scour ＆ wear resistance can be good.
4. the utility model has obtained the compound impregnation glass of joint surface epoxy coating by ring shake model-test data
Functional relation of the glass fiber band in different spacer width x and maximum deformation quantity y, it is proposed that different fracture widths and maximum opening
The design method of the adaptable spacer width of degree.
5. the utility model is related to material be preferably non-solvent epoxy system, it is nontoxic, volatility is small, suitable for tunnel,
It is used in the more closed water delivery engineering of the construction environments such as pipeline；Meanwhile the utility model is related to concrete surface protect apply
Layer material should meet state health standards《The safety evaluation standard of Drinking Water transmission ＆ distribution wetting system and protective materials》(GB/T
17219-1998), therefore, water quality will not be impacted.
Description of the drawings
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the schematic diagram of the structure for PCCP pipe bell and spigot seams of the utility model.
Fig. 2 is that the girth joint model of the structure for PCCP pipe bell and spigot seams of the utility model repairs schematic diagram.
Fig. 3 is the different spacer width girth joint moulds of the structure for PCCP pipe bell and spigot seams of the utility model
Type stretch test result figure.
Fig. 4 is the spacer width x and maximum deformation quantity y of the structure for PCCP pipe bell and spigot seams of the utility model
Function relation figure.
Fig. 5 is that the heavy caliber PCCP pipe bell and spigot seams of the utility model repair structure width scale diagrams.
Number is in attached drawing：
2, plastics seal material；3, epoxy putty；4, separation layer；5, bottom high tenacity epoxy coating；6, glass fiber tape；
7, surface layer high tenacity epoxy coating；A, spacer width；B, glass fibre bandwidth；C, high tenacity epoxy coating width.
Specific implementation mode
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by.Many details are elaborated in the following description in order to fully understand the utility model, but originally
Utility model can also be implemented using other different from other manner described here, and those skilled in the art can not disobey
Similar popularization is done in the case of back of the body the utility model connotation, therefore the utility model is not limited by following public specific embodiment
System.
As shown in Figure 1, the structure for PCCP pipe bell and spigot seams of the present embodiment include primer, plastics seal material 2,
Epoxy putty 3, separation layer 4, bottom high tenacity epoxy coating 5, impregnated glass fibre band 6 and surface layer high tenacity epoxy coating 7.Bottom
Glue is used to brush the inner wall in seam.Plastics seal material 2, epoxy putty 3, separation layer 4, bottom high tenacity epoxy coating 5,
Impregnated glass fibre band 6 and surface layer high tenacity epoxy coating 7 extend arrangement successively.
Wherein, it is preferred that primer is SK primers, and SK primers are preferably by the limited public affairs of Beijing Zhong Shui Ke Haili engineering technology
The primer for the model SK primers that department's production provides.The thickness of plastics seal material is 2 centimetres to 5 centimetres, plastics seal material
Until water retaining and sealing strip.Separation layer is elastic coating or adhesive tape, and elastic coating is elastic polyurethane or polyureas type coating.Bottom
High tenacity epoxy coating, surface layer high tenacity epoxy coating are than being isolated 10 centimetres to 20 centimetres of slice width.The performance of waterstop sealing item
For：Elongation is more than 200%, and tensile strength is more than 0.1MPa；Impermeability pressure is more than 2.0MPa.The tensile strength of epoxy putty >=
Intensity >=4MPa of 5MPa, epoxy putty and concrete bonding.Elastic polyurethane, polyureas type coating performance be：Extension at break
Rate is more than 200%, and tensile strength is more than 5MPa.Glass fiber tape is plain weave type glass fiber tape, and the performance of glass fiber tape is：
Thickness is 0.2 millimeter to 0.4 millimeter, and elongation rate of tensile failure is more than 3%, and tensile strength is more than 300N/25mm.Epoxy coating is epoxy
The performance of coating, epoxy coating is：Tensile strength is more than 15MPa, and elongation at break is more than 5%.
Second embodiment
It includes multiple end to end PCCP pipes that the PCCP pipes of the present embodiment, which connect the pipeline to be formed, and two neighboring PCCP
The position of birdsmouth between pipe forms seam, and seam has an interstitital texture, interstitital texture include primer, plastics seal material 2,
Epoxy putty 3, separation layer 4, bottom high tenacity epoxy coating 5, impregnated glass fibre band 6 and surface layer high tenacity epoxy coating 7,
In, primer is used to brush the inner wall in seam, plastics seal material 2, epoxy putty 3, separation layer 4, bottom high tenacity epoxy
Coating 5, impregnated glass fibre band 6 and surface layer high tenacity epoxy coating 7 are arranged in order.
Wherein, the extending direction of interstitital texture is identical as the extending direction of PCCP pipes, also, primer, plastics seal material
2, epoxy putty 3 is arranged on the inside of seam, separation layer 4, bottom high tenacity epoxy coating 5, impregnated glass fibre band 6 and surface layer
High tenacity epoxy coating 7 is arranged in the outside of seam.
Primer is SK primers, and the thickness of plastics seal material is 2 centimetres to 5 centimetres, and plastics seal material is waterstop sealing
Item.Separation layer is elastic coating or adhesive tape, and elastic coating is elastic polyurethane or polyureas type coating.Bottom high tenacity epoxy
Coating, surface layer high tenacity epoxy coating are 10 centimetres to 20 centimetres wider than separation layer.The performance of waterstop sealing item is：Elongation
More than 200%, tensile strength is more than 0.1MPa；Impermeability pressure is more than 2.0MPa.Tensile strength >=5MPa of epoxy putty, epoxy
Intensity >=4MPa of putty and concrete bonding.Elastic polyurethane, polyureas type coating performance be：Elongation at break is more than
200%, tensile strength is more than 5MPa.Glass fiber tape is plain weave type glass fiber tape, and the performance of glass fiber tape is：Thickness is
0.2 millimeter to 0.4 millimeter, elongation rate of tensile failure is more than 3%, and tensile strength is more than 300N/25mm.Epoxy coating is epoxy coating,
The performance of epoxy coating is：Tensile strength is more than 15MPa, and elongation at break is more than 5%.
In addition, the present embodiment has investigated the compound impregnation glass of joint surface epoxy coating by girth joint model test
Maximum deformation quantity y of the fiber band at different spacer width x.Model test schematic diagram is as shown in Fig. 2, in fig. 2, a is indicated
Spacer width, b indicate that impregnated glass fibre bandwidth, c indicate epoxy coating width.
Fig. 3 and table 1 are different spacer widths, in girth joint model, the epoxy coating of compound impregnated glass fibre band
Destruction force value and maximum deformation quantity test data.
The different spacer width girth joint model stretch test results of table 1
The functional relation that Fig. 4 fits spacer width x and maximum deformation quantity y is y=0.03x.
As a result, in the construction method of PCCP pipes bell and spigot seam construction, repaiied referring to Fig. 5 heavy caliber PCCP pipe bell and spigot seams
Mend structure width size, wherein ω indicates that joint gap, a indicate that spacer width, b indicate that glass fibre bandwidth, c indicate
High tenacity epoxy coating width.In different joint gap ω and engineering design maximum seam opening width β, slice width is isolated
Degree a, glass fibre bandwidth b, high tenacity epoxy coating width c exploitation mode calculate in two ways
It arrives：
If A. design opening width β≤joint gap ω × 0.03, spacer width a=joint gaps ω+(2~4) cm；
Glass fibre bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glass fibre bandwidth b+
(2~4) cm；
If B. design opening width β ＞ joint gaps ω × 0.03, spacer width a=design opening widths β/0.03+ (2
~4) cm；Glass fibre bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glass fibres
Bandwidth b+ (2~4) cm is calculated.
It is wide according to PCCP aqueduct seams in the specific implementation step of the construction method of PCCP pipe bell and spigot seam constructions
The value of degree ω and the maximum opening width β of design determine spacer width a, glass fibre bandwidth according to exploitation method above
The value of b and high tenacity epoxy coating width c.Then following construction method is carried out.
Construction method provided in this embodiment to PCCP pipe bell and spigot seam constructions uses the following steps：
Step 1:Clean seam；
Step 2:In seam inseam brushing primer；
Step 3：Filling is with seam with wide plastics seal material；
Step 4：It is extremely concordant with bell and spigot outer rim that epoxy putty is filled on plastics seal material；
Step 5:In epoxy putty external coating separation layer；
Step 6:Roller coating epoxy impregnation glue, hangs certain time on glass fiber tape；
Step 7:In insulation surface brushing bottom high tenacity epoxy coating；
Step 8：There is the glass fiber tape of epoxy impregnation glue to be laid on bottom high tenacity epoxy coating load, with rolling
Cylinder compacting, excludes the bubble between glass fiber tape and bottom high tenacity epoxy coating；
Step 9：Surface layer high tenacity epoxy coating is brushed on glass fiber tape surface layer.
The present embodiment gives preferred construction method, and step is specifically：
Step 1: the polishing cleaning inside and outside seam.Craft or power wash inseam are carried out using wire brush, is cleaned out
Afterwards, it is blown off using air blower.Mortar surface is polished flat simultaneously clearly in seam both sides design high tenacity epoxy coating width range
Wash clean.
Step 2: inseam brushing SK primers, with seam with the GB water stop sealing materials that wide, thickness is (2-5) cm, GB stops for filling
Watertight closure material is preferably the model GB waterstop sealing materials provided by zhongshui Kehaili Engineering Technology Co., Ltd., Beijing's production
The sealing material of material, sealing effect are more preferable.Epoxy putty is filled thereon to flush.SK primers, GB waterstop sealings item, ring
The performance of oxygen putty meets the requirement of table 2.
Table 2 stitches interior packing material performance requirement
Step 3: epoxy putty external coating elastic polyurethane/polyureas type coating or stickup adhesive tape, as isolation
Layer.The width of separation layer is a, and preferably elastic coating, the performance of elastic polyurethane/polyurea coating meets the requirement of table 3.
3 elastic polyurethanes of table/polyurea coating performance requirement
| Project | Performance requirement |
| Tensile strength (MPa) | ≥5 |
| Elongation (%) | ≥200 |
Step 4: selection thickness is 0.2mm, the glass fiber tape that width is b centimetres.Even roller applies on glass fibre band
Epoxy impregnation glue, impregnation resin content are (200~300) g/m2.Hang 1-2h (hour).The performance of glass fiber tape and dipping glue meets
The requirement of table 4.
4 glass fiber tape of table and dipping glue performance requirement
Step 5: the high tenacity epoxy coating that insulation surface brushing (1.0-1.5) mm is thick, width is c centimetres.Then will
The glass fiber tape of impregnation is laid on bottom high tenacity epoxy coating, with roller compaction, the bubble between excluding two layers.(1-
2) after h (hour), the high tenacity epoxy coating with lower layer with wide (1.0-1.5) mm thickness is brushed on glass fiber tape surface layer.It is high
The performance of tough epoxy coating meets the requirement of table 5.
5 high tenacity epoxy coating performance requirement of table
Using the PCCP pipe bell and spigot seam constructions and its construction method of the present embodiment, construct in prestress steel pipe of concrete
In, can have that construction is simple, anti-backwater pressure be strong, resistant abrasion while moderately keeping PCCP pipe bell and spigot deformabilities
Performance is good, meets the features such as sanitary standard for drinking water.
Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
It is obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of structure for PCCP pipe bell and spigot seams, it is characterised in that：It is greasy including primer, plastics seal material, epoxy
Son, separation layer, bottom high tenacity epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating；
Wherein, the primer is used to brush the inner wall in seam, the plastics seal material, epoxy putty, separation layer, bottom
High tenacity epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating are arranged in order.
2. being used for the structure of PCCP pipe bell and spigot seams according to claim 1, it is characterised in that：
The primer is SK primers；
The thickness of the plastics seal material is 2 centimetres to 5 centimetres；
Water retaining and sealing strip until the plastics seal material；
The separation layer is elastic coating or adhesive tape；
The elastic coating is elastic polyurethane or polyureas type coating；
The bottom high tenacity epoxy coating, surface layer high tenacity epoxy coating are than 10 centimetres to 20 centimetres of the isolation slice width.
3. the structure according to claim 2 for PCCP pipe bell and spigot seams, which is characterized in that
The performance of the waterstop sealing item is：Elongation is more than 200%, and tensile strength is more than 0.1MPa；Impermeability pressure is more than
2.0MPa；
Intensity >=4MPa of tensile strength >=5MPa of the epoxy putty, the epoxy putty and concrete bonding；
The elastic polyurethane, polyureas type coating performance be：Elongation at break is more than 200%, and tensile strength is more than 5MPa；
The glass fiber tape is plain weave type glass fiber tape, and the performance of the glass fiber tape is：Thickness be 0.2 millimeter extremely
0.4 millimeter, elongation rate of tensile failure is more than 3%, and tensile strength is more than 300N/25mm；
The epoxy coating is epoxy coating, and the performance of the epoxy coating is：Tensile strength is more than 15MPa, elongation at break
More than 5%.
4. a kind of PCCP pipes connect the pipeline to be formed, which is characterized in that
It is managed including multiple end to end PCCP, and the position of the birdsmouth between two neighboring PCCP pipes forms seam, it is described
Seam has interstitital texture, and the interstitital texture includes primer, plastics seal material, epoxy putty, separation layer, bottom high tenacity
Epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating, the primer are brushed on the inner wall of the seam；
Wherein, the primer is brushed on the inner wall of seam, the plastics seal material, epoxy putty, separation layer, bottom high-ductility
Property epoxy coating, impregnated glass fibre band and surface layer high tenacity epoxy coating are arranged in order；Also, the primer, plastic sealed
Material, epoxy putty are arranged in the inside of the seam, the separation layer, bottom high tenacity epoxy coating, impregnated glass fibre
Band and surface layer high tenacity epoxy coating are arranged in the outside of the seam.
5. PCCP pipes connect the pipeline to be formed according to claim 4, it is characterised in that：
The primer is SK primers；
The thickness of the plastics seal material is 2 centimetres to 5 centimetres；
Water retaining and sealing strip until the plastics seal material；
The separation layer is elastic coating or adhesive tape；
The elastic coating is elastic polyurethane or polyureas type coating；
The bottom high tenacity epoxy coating, surface layer high tenacity epoxy coating are 10 centimetres to 20 lis wider than the separation layer
Rice.
6. PCCP pipes according to claim 5 connect the pipeline to be formed, which is characterized in that
The performance of the waterstop sealing item is：Elongation is more than 200%, and tensile strength is more than 0.1MPa；Impermeability pressure is more than
2.0MPa；
Intensity >=4MPa of tensile strength >=5MPa of the epoxy putty, the epoxy putty and concrete bonding；
The elastic polyurethane, polyureas type coating performance be：Elongation at break is more than 200%, and tensile strength is more than 5MPa；
The glass fiber tape is plain weave type glass fiber tape, and the performance of the glass fiber tape is：Thickness be 0.2 millimeter extremely
0.4 millimeter, elongation rate of tensile failure is more than 3%, and tensile strength is more than 300N/25mm；
The epoxy coating is epoxy coating, and the performance of the epoxy coating is：Tensile strength is more than 15MPa, elongation at break
More than 5%.
7. PCCP pipes according to claim 4 connect the pipeline to be formed, which is characterized in that
If designing opening width β≤joint gap ω × 0.03, the spacer width a=joint gaps ω+(2~4) cm；Glass
Fibre ribbons width b=spacer widths a+ (10~20) cm；The high tenacity epoxy coating width c=glass bandwidth b+ (2~4)
cm；
If design opening width β ＞ joint gaps ω × 0.03, the spacer width a=design opening widths β/0.03+ (2~
4)cm；Glass bandwidth b=spacer widths a+ (10~20) cm；High tenacity epoxy coating width c=glass bandwidth b+ (2
~4) cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620494.9U CN207749607U (en) | 2017-11-28 | 2017-11-28 | Structure and pipeline for PCCP pipe bell and spigot seams |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620494.9U CN207749607U (en) | 2017-11-28 | 2017-11-28 | Structure and pipeline for PCCP pipe bell and spigot seams |
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| Publication Number | Publication Date |
|---|---|
| CN207749607U true CN207749607U (en) | 2018-08-21 |
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ID=63147551
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|---|---|---|---|
| CN201721620494.9U Expired - Fee Related CN207749607U (en) | 2017-11-28 | 2017-11-28 | Structure and pipeline for PCCP pipe bell and spigot seams |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989156A (en) * | 2017-11-28 | 2018-05-04 | 北京中水科海利工程技术有限公司 | Structure, pipeline and construction method for PCCP pipe bell and spigot seams |
-
2017
- 2017-11-28 CN CN201721620494.9U patent/CN207749607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989156A (en) * | 2017-11-28 | 2018-05-04 | 北京中水科海利工程技术有限公司 | Structure, pipeline and construction method for PCCP pipe bell and spigot seams |
| CN107989156B (en) * | 2017-11-28 | 2024-06-07 | 北京中水科海利工程技术有限公司 | Structure for PCCP pipe faucet seam, pipeline and construction method |
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