CN107191673A - A kind of ultra-large type GRP pipe installs counterpart construction method - Google Patents
A kind of ultra-large type GRP pipe installs counterpart construction method Download PDFInfo
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- CN107191673A CN107191673A CN201710510611.4A CN201710510611A CN107191673A CN 107191673 A CN107191673 A CN 107191673A CN 201710510611 A CN201710510611 A CN 201710510611A CN 107191673 A CN107191673 A CN 107191673A
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- counterpart
- grp pipe
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- holding card
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of ultra-large type GRP pipe and installs counterpart construction method, comprises the following steps：Design an interim holding card being stuck near counterpart GRP pipe fixing end；At a drawing point of holding card Lever Blocks, increase bolt splice point two hangers of formation as point is drawn, and this is drawn into a surface for being placed in GRP pipe；Drawing lifting cross-arm is installed at point；Pipeline is hung to relevant position, portable assembly scaffold is installed, then by Pipe installing counterpart；Compared with prior art, the present invention has following beneficial effect：By increasing lifting auxiliary equipment convenient construction human users and safe construction, overall speed of application is added, produced problem in construction is reduced, has reached purpose simple in construction and reasonable in design.
Description
Technical field
The present invention is that a kind of ultra-large type GRP pipe installs counterpart construction method, belongs to ultra-large type fiberglass aqueduct
Technical field of construction.
Background technology
When general installation pvc pipe or PE pipes, because specification is small lightweight, using hanging belt and a turnbuckle or one
Counterpart is installed in individual Lever Blocks combination, and this counterpart method is all fitted to pvc pipe and PE pipes and below DN1600 glass reinforced plastic pipe
With, but the glass reinforced plastic pipe that caliber exceedes DN1600 is not particularly suited for, it is mainly shown as that pipeline butt is slow, hanging belt and a hand are pulled
The chain of cucurbit is easily with respect to slip, it is necessary to which release is mutually moved back by hanging belt with chain pipeline could repeatedly being drawn again repeatedly
Closely.Need have larger spacing between two colligation points in this way, repeatedly again colligation when Lever Blocks accumulative row
Journey is very long, and causes because conduit volume is excessive to be difficult to align after furthering.
With reference to the counterpart method of prestressed concrete pipe and concrete reinforced pipe, using 2-4 Lever Blocks (or jack
Cucurbit) and steel wire rope colligation pipeline, wherein one end withstands on the free end for wanting pipe laying with channel-section steel, and the method really can be effective
Ground install ultra-large type glass reinforced plastic pipe, but be due to operation scope it is excessive (joint length of general ultra-large type pipe of cement be 2m, most
4m is no more than greatly, and the joint length of general ultra-large type glass reinforced plastic pipe is even longer for 6 meters) and glass reinforced plastic pipe pipe friction
It is small, there is the phenomenon of steel wire iope slippage, so installation effectiveness is very low.
The content of the invention
Applied in view of the deficienciess of the prior art, installing counterpart it is an object of the present invention to provide a kind of ultra-large type GRP pipe
Work method, to solve the problems mentioned in the above background technology.
To achieve these goals, the present invention is to realize by the following technical solutions：A kind of ultra-large type glass reinforced plastic pipe
Counterpart construction method is installed in road, is comprised the following steps：
Design an interim holding card being stuck near counterpart GRP pipe fixing end；
One in holding card Lever Blocks is drawn at point, and bolt splice point formation two of the increase by one as point is drawn is hung
Ear, and this is drawn into a surface for being placed in GRP pipe；
Drawing lifting cross-arm is installed at point；
Pipeline is hung to relevant position, portable assembly scaffold is installed, then by Pipe installing counterpart.
Further, the specific step for designing an interim holding card being stuck near counterpart GRP pipe fixing end
Suddenly it is：Holding card is fixed at 1 meter away from GRP pipe counterpart end, because the tube wall of GRP pipe is extremely smooth, in order to ensure
Holding card is not shifted at work, and soft cloth is lined between holding card and GRP pipe.
Further, it is described to draw installation at point to lift concretely comprising the following steps for cross-arm：Cross-arm main body uses 250 × 250H types
Steel, steel material is ASTM A36, and the upper-lower position at cross-arm two ends respectively has a suspension hook coordinated with hanger, suspension hook and H types
Steel is by being welded to connect, and welding position is provided with reinforcement.
Beneficial effects of the present invention：A kind of ultra-large type GRP pipe of the present invention installs counterpart construction method, by increasing
Plus lifting auxiliary equipment convenient construction human users and safe construction, overall speed of application is added, is reduced in construction
Produced problem, has reached purpose simple in construction and reasonable in design.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, is expanded on further the present invention.
The present invention provides a kind of technical scheme：A kind of ultra-large type GRP pipe installs counterpart construction method, including following
Step：
Design an interim holding card being stuck near counterpart GRP pipe fixing end；
One in holding card Lever Blocks is drawn at point, and bolt splice point formation two of the increase by one as point is drawn is hung
Ear, and this is drawn into a surface for being placed in GRP pipe；
Drawing lifting cross-arm is installed at point；
Pipeline is hung to relevant position, portable assembly scaffold is installed, then by Pipe installing counterpart.
Design concretely comprising the following steps for interim holding card being stuck near counterpart GRP pipe fixing end：Holding card is fixed
At 1 meter away from GRP pipe counterpart end, because the tube wall of GRP pipe is extremely smooth, in order to ensure holding card at work not
Shift, soft cloth is lined between holding card and GRP pipe.
Drawing concretely comprising the following steps for lifting cross-arm is installed at point：Cross-arm main body uses 250 × 250H shaped steel, and steel material is
ASTM A36, the upper-lower position at cross-arm two ends respectively has a suspension hook coordinated with hanger, and suspension hook passes through the company of welding with H profile steel
Connect, welding position is provided with reinforcement.
It is used as one embodiment of the present of invention：Shown according to the Analysis of Construction Technique of ultra-large type fiberglass aqueduct, it is right
In DN3200 GRP pipes, it is desirable to provide more than 107.02kN pulling force can just overcome the maximum static friction force of single pipe,
In order that pipeline uniform force, is realized by using 3-5 Lever Blocks or jack, such as it can use 44 tons of hand
Cucurbit is pulled, this pulling force can reach 160kN；For DN4000 GRP pipes, it is desirable to provide more than 164.6kN pulling force,
45 tons of Lever Blocks can be used, this pulling force can reach 200kN.
Meanwhile, the fixing point of Lever Blocks requires careful consideration.If with reference to the installation counterpart side of prestressed concrete pipe
Method, is fixed near the free end for needing counterpart pipeline, due to single pipe length be 12m, during counterpart steel wire rope used and
The single cumulative length of Lever Blocks will exceed 12m, and this method is obviously unreasonable.To solve this problem, one have devised
It can be stuck in and want interim holding card near counterpart GRP pipe fixing end, holding card is fixed at 1 meter away from pipeline butt end, this position
Putting producer is allowed.Because the tube wall of GRP pipe is extremely smooth, in order to ensure that holding card does not shift at work, embrace
Card should pad soft cloth with pipeline enclosure.
Before Pipe installing counterpart, first have to pipeline being hung to relevant position.General way is brought into using lifting
Row lifting, but the process of installation and removal hanging belt is bothered very much, is required for duct bottom to possess certain operating space, especially
It needs to dig out working pit when being dismounting hanging belt, otherwise can not complete dismounting.Secondly workmen needs to climb up to climb down,
Construction risk is larger.In order to solve this problem, corresponding improvement has been done in the design to interim holding card, and specific practice is in holding card hand
Pull cucurbit one is drawn at point, bolt splice point formation two hangers of the increase by one as drawing point, and this drawing point is disposed
In the surface of pipeline.To verify the feasibility of the method, following feasibility checking computations are carried out.The deadweight of DN4000 GRP pipes
For 19.9t, it is contemplated that Dynamic Load Factor, safety factor and reliability factor during lifting, it is 20t to take its deadweight.Lifting appliance
Using 48 tons of T-shaped suspension ring, steel material is Q235；17 tons of D type pin buckle, a diameter of 38mm of pin；Tentative hanger steel
The thickness of plate is 20mm, and smallest cross-sectional width is 180mm, and hanger perforate is 40mm.
(1) hanger allow load
Hanger allows the load to be calculated as follows：
In formula：The permissible load of P-hanger；
N-load；
C-uneven Force Coefficients, typically takes 1.1~1.3,1.2 is taken herein；
N-while the hanger number of stress.
(2) tension is calculated
Its strength calculation formula is：
Meet and require.
In formula：σ-tension；
The load of N-single hanger,
D-dynamic load factor, typically takes 1.1~1.3,1.2 is taken herein；
S1- section part sectional area, S1=(180-40) × 20=2800mm2；
The allowable tensile stress of [σ]-steel；
K-allowable tensile stress coefficient, typically takes 2.5~3,2.8 is taken herein.
(3) local compression Stress calculation
The most unfavorable combination of local compression stress is in the junction of hanger and bearing pin, its strength calculation formula：
Meet and require.
In formula：σcj- local compression stress；
The load of N-single hanger,
D-dynamic load factor, typically takes 1.1~1.3,1.2 is taken herein；
The thickness of δ-hanger；
D-pin diameter, d=38mm；
The permissible compression stress of-steel；
K-allowable tensile stress coefficient, typically takes 2.5~3,2.5 is taken herein.
By above calculation specifications, for DN4000 GRP pipes, thickness is used for 20mm, and width is 180mm steel
Plate is feasible as the hanger of holding card；It is less than DN4000 GRP pipe for caliber, it, which is conducted oneself with dignity, is both less than 20t, so
It is also feasible using this hanger.While the reliability in order to ensure GRP pipe installation, it is ensured that holding card only undertakes during lifting
Vertical load is, it is necessary to design a corresponding lifting cross-arm.
Cross-arm main body uses 250 × 250H shaped steel, and steel material is ASTM A36, and total length is 10.3m, and conduct oneself with dignity 700kg；
Upper-lower position at cross-arm two ends respectively has a hanger, and hanger is with H profile steel by being welded to connect, and welding position is provided with reinforcement；
The wide 300mm of hanger, high 150mm, thickness is 20mm, a diameter of 40mm of lifting hole(eyelet).DN4000 GRP pipes are conducted oneself with dignity
19900kg, adds the weight of hoisting rig and assembling fixture and pipe collar sleeve pipe, and lifting dead load is 21000kg.During lifting not
Coefficient of uniformity takes 1.1；In view of the influence of wind load and dynamic load, Dynamic Amplification Factor takes 1.2, calculates maximum lifting weight and is
26520kg。
(1) Force Calculation
By balancing for power：
Fh=FVCtg60 °=78.56kN； (1-2)
In formula：Pulling force suffered by F-upper hanger；
FV- F vertical stress component；
Fh- F horizontal component；
F1Pulling force suffered by-lower hanger,
The gravity laod of G-cross-arm, G=7kN；
(2) calculation of Bending Moment
Maximal bending moment suffered by cross-arm under gravity G effects and under horizontal force action：
Mh=FhS=78.56 × 0.225=17.68kNm (2-2)
In formula：The length of L-cross-arm；
The arm of force of S-horizontal force, S=0.225m.
It can be obtained by analysis, maximal bending moment is in cross-arm span centre position, Mmax=53.73kNm.
(3) Stress calculation
Cross-arm spaning middle section maximum stress in bend：
In formula：W-H profile steel section modulus, W=889.6cm3。
Horizontal direction compression suffered by cross-arm：
In formula：A-H profile steel area of section, A=92.7cm2。
Maximum stress suffered by cross-arm：
σmax=σ1+σ2=68.85Mpa≤[σ]=125Mpa (3-3)
In formula：[σ]-allowable working stresses of steel, [σ]=125Mpa.
By above calculation specifications, cross-arm meets intensity requirement, therefore can use safely, the lifting auxiliary equipment of whole pipeline
Have been prepared for completing, by increasing lifting auxiliary equipment convenient construction human users and safe construction, add overall apply
Work speed, reduces produced problem in construction, has reached purpose simple in construction and reasonable in design
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above, for this area skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, all should be by no matter from the point of view of which point
Embodiment regards exemplary as, and be it is nonrestrictive, the scope of the present invention by appended claims rather than on state
It is bright to limit, it is intended that all changes fallen in the implication and scope of the equivalency of claim are included in the present invention
It is interior.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (3)
1. a kind of ultra-large type GRP pipe installs counterpart construction method, it is characterised in that：Comprise the following steps：
Design an interim holding card being stuck near counterpart GRP pipe fixing end；
One in holding card Lever Blocks is drawn at point, bolt splice point formation two hangers of the increase by one as point is drawn, and
This drawing point is placed in the surface of GRP pipe；
Drawing lifting cross-arm is installed at point；
Pipeline is hung to relevant position, portable assembly scaffold is installed, then by Pipe installing counterpart.
2. a kind of ultra-large type GRP pipe according to claim 1 installs counterpart construction method, it is characterised in that：It is described
Design concretely comprising the following steps for interim holding card being stuck near counterpart GRP pipe fixing end：Holding card is fixed on away from glass
At 1 meter of steel conduit counterpart end, because the tube wall of GRP pipe is extremely smooth, in order to ensure that holding card does not occur partially at work
Move, soft cloth is lined between holding card and GRP pipe.
3. a kind of ultra-large type GRP pipe according to claim 1 installs counterpart construction method, it is characterised in that：It is described
Drawing concretely comprising the following steps for lifting cross-arm is installed at point：Cross-arm main body uses 250 × 250H shaped steel, and steel material is ASTM
A36, the upper-lower position at cross-arm two ends respectively has a suspension hook coordinated with hanger, and suspension hook, by being welded to connect, is welded with H profile steel
Position is provided with reinforcement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510611.4A CN107191673A (en) | 2017-06-28 | 2017-06-28 | A kind of ultra-large type GRP pipe installs counterpart construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710510611.4A CN107191673A (en) | 2017-06-28 | 2017-06-28 | A kind of ultra-large type GRP pipe installs counterpart construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150000091A1 (en) * | 2011-09-21 | 2015-01-01 | 1729655 Alberta Ltd. | Pipe Aligning Tool |
| CN104989875A (en) * | 2015-05-19 | 2015-10-21 | 中国海洋石油总公司 | Submarine pipeline flange underwater abutting joint installation method |
| CN205689895U (en) * | 2016-06-03 | 2016-11-16 | 重庆工业设备安装集团有限公司 | Heavy caliber compound pipeline complex pipeline boil on the nape opposite the mouth adjusting means |
| CN205802757U (en) * | 2016-06-08 | 2016-12-14 | 中国能源建设集团湖南火电建设有限公司 | A kind of hanging tubular mother's integral hoisting device for rapid |
| CN205927693U (en) * | 2016-08-22 | 2017-02-08 | 中国电建集团核电工程公司 | Large diameter pipe isolated plant that is geared to needs of job |
| CN205953338U (en) * | 2016-06-17 | 2017-02-15 | 中建市政工程有限公司 | Novel concrete pipe flexible hoisting matching device |
-
2017
- 2017-06-28 CN CN201710510611.4A patent/CN107191673A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150000091A1 (en) * | 2011-09-21 | 2015-01-01 | 1729655 Alberta Ltd. | Pipe Aligning Tool |
| CN104989875A (en) * | 2015-05-19 | 2015-10-21 | 中国海洋石油总公司 | Submarine pipeline flange underwater abutting joint installation method |
| CN205689895U (en) * | 2016-06-03 | 2016-11-16 | 重庆工业设备安装集团有限公司 | Heavy caliber compound pipeline complex pipeline boil on the nape opposite the mouth adjusting means |
| CN205802757U (en) * | 2016-06-08 | 2016-12-14 | 中国能源建设集团湖南火电建设有限公司 | A kind of hanging tubular mother's integral hoisting device for rapid |
| CN205953338U (en) * | 2016-06-17 | 2017-02-15 | 中建市政工程有限公司 | Novel concrete pipe flexible hoisting matching device |
| CN205927693U (en) * | 2016-08-22 | 2017-02-08 | 中国电建集团核电工程公司 | Large diameter pipe isolated plant that is geared to needs of job |
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Application publication date: 20170922 |
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