CN107657093A - A kind of cable laying tractive force and lateral pressure method - Google Patents
A kind of cable laying tractive force and lateral pressure method Download PDFInfo
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- CN107657093A CN107657093A CN201710825549.8A CN201710825549A CN107657093A CN 107657093 A CN107657093 A CN 107657093A CN 201710825549 A CN201710825549 A CN 201710825549A CN 107657093 A CN107657093 A CN 107657093A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/16—Cables, cable trees or wire harnesses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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Abstract
Invention provides a kind of cable laying tractive force and lateral pressure method, and work well and the tractive force and lateral pressure in section are calculated according to the Back ground Information of the cable laying of input, work well data and laying data.The present invention can adjust in project engineering stage to tractive force and lateral pressure, the reasonability in objective analysis design path technically is supported with data, pinpoint the problems and modify in time, avoid because design it is improper and caused by broken string, deformation after cable laying, tractive force, the lateral pressure stressing conditions of each key point are provided simultaneously, instruct to take more reasonably precautionary measures during cable laying operation from the angle of technology, improve cable laying quality.
Description
Technical field
The present invention relates to power transmission cable to lay field, more particularly, to a kind of cable laying tractive force and lateral pressure meter
Calculation method.
Background technology
Power transmission cable bears the vital task of electric energy transmission, once problem occurs in it, will certainly be impacted to power supply,
Laying quality during power transmission cable cable laying operation often influences the service life of power transmission cable, in order to further ensure that transmission of electricity electricity
Cable cable laying operation quality, force analysis when being laid to power transmission cable seem extremely important.
The mode of China's power cable layer generally uses the mode of " pay off rack+hauling machine+conveyer " to be applied at present
If hauling machine tractive force acts on cable drawing head, dragging cable is laid forward, and drawing head is connected with cable core, and cable applies
If when core the tractive force of hauling machine offer is provided, path crooked position cable metal sheath bears lateral pressure, and cable trace is set
Tractive force, lateral pressure increase can be made when counting unreasonable, when tractive force, lateral pressure are more than the power that cable body can bear, meeting
Cause the consequences such as core broken string and distortion of the cable.
The domestic cable work design phase is very rare to be adjusted to tractive force, lateral pressure, only when cable laying is constructed
Cable stress is reduced by installing tensiometer, installing the modes such as pulley additional by rule of thumb, can not really play a part of protecting cable.
The content of the invention
The present invention is to overcome at least one defect described in above-mentioned prior art, there is provided a kind of cable laying tractive force and side
Calculation of pressure method, power transmission cable laying stress analysis is carried out to design path in project engineering stage, it is objective to be supported with data
Analyze design path reasonability technically, reduce because design it is improper and caused by cable laying construct when broken string, deformation feelings
Condition occurs, while instructs to take more reasonably precautionary measures during cable laying operation, improves cable laying quality.
In order to solve the above technical problems, technical scheme is as follows：
A kind of cable laying tractive force and lateral pressure method, comprise the following steps：
S1:The Back ground Information that user lays in client input cable, including voltage class, the cross-section of cable and sheath class
Type, client call are arranged at the database of server end, determine that cable weight W allows maximum drawbar pull and side pressure with cable
Power, the database purchase have the empirical data of cable laying；
S2:Work well data and laying data are inputted by html5 table-layout, check that input information is complete after input
Whole property and accuracy；
The work well data include work well numbering, work well type and work well parameter, the work well type include straight line well and
Turning well, for straight line well, work well parameter includes work well length L1With work well coefficient of friction u1；For turning well, work Jing Canshuobao
Include angle of turn θ, radius of turn r and work well coefficient of friction u1；
Laying data interval numbering, system of laying and the laying parameter, the section numbering represent two neighboring work well
Between section numbering, system of laying includes tunnel, cable duct, crane span structure, groove box, pipe laying and push pipe, for tunnel, cable duct,
Crane span structure, groove box and pipe laying, laying parameter include length L2And laying friction coefficient μ2；For push pipe, laying parameter includes length
L2, angle [alpha], buried depth h, bending section radius R and laying friction coefficient μ2；
S3:Each work well and the tractive force in section are calculated in order；
S301：The tractive force of first work well is calculated, the tractive force calculation formula of straight line well is：T1=T0+u1WL1；Turn
The tractive force calculation formula of well is：T1=T0+T0eu1θ；Wherein, T0Cable hank frictional force is represented, μ represents work well coefficient of friction, L
Work well length is represented, θ represents angle of turn；
S302：First work well is calculated to the tractive force between second work wellblock, tunnel, cable duct, crane span structure, groove box and is buried
Calculation formula between area under control is：T2=T1+u2WL2；The tractive force computational methods in push pipe section are：Push pipe section is divided into some
Section, every section of tractive force is calculated respectively；
S303：The tractive force of second work well is calculated, the tractive force calculation formula of straight line well is：T3=T2+u1WL1；Turn
The tractive force calculation formula of well is：T3=T2+T2eu1θ；
S304：The method provided according to step S301-S303, each work well and the tractive force in section are calculated in order；
S4:Calculate each turning well and the lateral pressure P in push pipe section；
For turning well, its lateral pressure is equal to the tractive force T and radius of turn r of the turning well ratio, i.e. P=T/r；
For push pipe section, its lateral pressure is equal to the tractive force in the push pipe section and the ratio of bending section radius, i.e. P=T/
R。
Preferably, described work well coefficient of friction is defaulted as μ1=0.2.
Preferably for tunnel, cable duct, crane span structure, it lays coefficient of friction and is defaulted as μ2=0.2；For groove box, pipe laying
It lays coefficient of friction and is defaulted as μ with push pipe2=0.45.
Preferably, calculation formula is embedded by javascript application systems in client and draws tractive force and lateral pressure,
Result of calculation figure is generated by canvas.
Compared with prior art, the beneficial effect of technical solution of the present invention is：The present invention provides a kind of cable laying traction
Power and lateral pressure method, according to the Back ground Information of the cable laying of input, work well data and laying data calculate work well and
The tractive force and lateral pressure in section.The present invention can adjust in project engineering stage to tractive force and lateral pressure, with data branch
Hold reasonability technically in objective analysis design path, pinpoint the problems and modify in time, avoid because design it is improper and
Cause to break after cable laying, deform, while the tractive force of each key point, lateral pressure stressing conditions are provided, from the angle of technology
Degree instructs to take more reasonably precautionary measures during cable laying operation, improves cable laying quality.
Brief description of the drawings
Fig. 1 is cable laying tractive force and lateral pressure method flow diagram.
Fig. 2 is cable laying tractive force and lateral pressure system architecture diagram.
Embodiment
Technical scheme is described further with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1-2, a kind of cable laying tractive force and lateral pressure method, comprise the following steps：
S1:User client (personal PC) selection cable laying Back ground Information, including voltage class, the cross-section of cable and
Sheathed-type, client call the database for being arranged at server end according to selected Back ground Information type, determine cable weight W
Maximum drawbar pull and lateral pressure, the database purchase is allowed to have the empirical data of cable laying with cable；
S2:Table-layout field information and necessary calculating parameter by html5, including input work well data and laying
Data, input information integrity and accuracy are checked after input；
The work well data include work well numbering, work well type and work well parameter, the work well type include straight line well and
Turning well, for straight line well, work well parameter includes work well length L1With work well coefficient of friction u1；For turning well, work Jing Canshuobao
Include angle of turn θ, radius of turn r and work well coefficient of friction u1；Described work well coefficient of friction is defaulted as μ1=0.2.
Laying data interval numbering, system of laying and the laying parameter, the section numbering represent two neighboring work well
Between section numbering, system of laying includes tunnel, cable duct, crane span structure, groove box, pipe laying and push pipe, for tunnel, cable duct,
Crane span structure, groove box and pipe laying, laying parameter include length L2And laying friction coefficient μ2；For push pipe, laying parameter includes length
L2, angle [alpha], buried depth h, bending section radius R and laying friction coefficient μ2；For tunnel, cable duct, crane span structure, it lays coefficient of friction
It is defaulted as μ2=0.2；For groove box, pipe laying and push pipe, it lays coefficient of friction and is defaulted as μ2=0.45.
S3:Each work well and the tractive force in section are calculated in order；
S301：The tractive force of first work well is calculated, the tractive force calculation formula of straight line well is：T1=T0+u1WL1；Turn
The tractive force calculation formula of well is：T1=T0+T0eu1θ；Wherein, T0Cable hank frictional force is represented, μ represents work well coefficient of friction, L
Work well length is represented, θ represents angle of turn；
S302：First work well is calculated to the tractive force between second work wellblock, tunnel, cable duct, crane span structure, groove box and is buried
Calculation formula between area under control is：T2=T1+u2WL2；The tractive force computational methods in push pipe section are：Push pipe section is divided into some
Section, every section of tractive force is calculated respectively；
S303：The tractive force of second work well is calculated, the tractive force calculation formula of straight line well is：T3=T2+u1WL1；Turn
The tractive force calculation formula of well is：T3=T2+T2eu1θ；
S304：The method provided according to step S301-S303, each work well and the tractive force in section are calculated in order；
S4:Calculate each turning well and the lateral pressure P in push pipe section；
For turning well, its lateral pressure is equal to the tractive force T and radius of turn r of the turning well ratio, i.e. P=T/r；
For push pipe section, its lateral pressure is equal to the tractive force in the push pipe section and the ratio of bending section radius, i.e. P=T/
R。
In specific implementation process, calculation formula is embedded by javascript application systems and draws tractive force and side pressure
Power, result of calculation figure is generated by canvas.Output word document is simultaneously downloaded to the machine.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (5)
1. a kind of cable laying tractive force and lateral pressure method, it is characterised in that comprise the following steps：
S1:The Back ground Information that user lays in client input cable, including voltage class, the cross-section of cable and sheathed-type, visitor
The database for being arranged at server end is called at family end, determines that cable weight W and cable allow maximum drawbar pull and lateral pressure, described
Database purchase has the empirical data of cable laying；
S2:Work well data and laying data are inputted, input information integrity and accuracy are checked after input；
The work well data, which include work well numbering, work well type and work well parameter, the work well type, includes straight line well and turning
Well, for straight line well, work well parameter includes work well length L1With work well coefficient of friction u1；For turning well, work well parameter includes turning
Bending angle θ, radius of turn r and work well coefficient of friction u1；
Laying data interval numbering, system of laying and the laying parameter, the section numbering are represented between two neighboring work well
Section numbering, system of laying includes tunnel, cable duct, crane span structure, groove box, pipe laying and push pipe, for tunnel, cable duct, crane span structure,
Groove box and pipe laying, laying parameter include length L2And laying friction coefficient μ2；For push pipe, laying parameter includes length L2, angle
Spend α, buried depth h, bending section radius R and laying friction coefficient μ2；
S3:Each work well and the tractive force in section are calculated in order；
S301：The tractive force of first work well is calculated, the tractive force calculation formula of straight line well is：T1=T0+u1WL1；Turning well
Tractive force calculation formula is：T1=T0+T0eu1θ；Wherein, T0Cable hank frictional force is represented, μ represents work well coefficient of friction, and L is represented
Work well length, θ represent angle of turn；
S302：First work well is calculated to the tractive force between second work wellblock, tunnel, cable duct, crane span structure, groove box and pipe laying area
Between calculation formula be：T2=T1+u2WL2；The tractive force computational methods in push pipe section are：Push pipe section is divided into some sections, point
Every section of tractive force is not calculated；
S303：The tractive force of second work well is calculated, the tractive force calculation formula of straight line well is：T3=T2+u1WL1；Turning well
Tractive force calculation formula is：T3=T2+T2eu1θ；
S304：The method provided according to step S301-S303, each work well and the tractive force in section are calculated in order；
S4:Calculate each turning well and the lateral pressure P in push pipe section；
For turning well, its lateral pressure is equal to the tractive force T and radius of turn r of the turning well ratio, i.e. P=T/r；
For push pipe section, its lateral pressure is equal to the tractive force in the push pipe section and the ratio of bending section radius, i.e. P=T/R.
2. cable laying tractive force according to claim 1 and lateral pressure method, it is characterised in that in step S2,
Work well data and laying data are inputted by html5 table-layout.
3. cable laying tractive force according to claim 1 and lateral pressure method, it is characterised in that described work well
Coefficient of friction is defaulted as μ1=0.2.
4. cable laying tractive force according to claim 1 and lateral pressure method, it is characterised in that for tunnel,
Cable duct, crane span structure, it lays coefficient of friction and is defaulted as μ2=0.2；For groove box, pipe laying and push pipe, it lays coefficient of friction acquiescence
For μ2=0.45.
5. cable laying tractive force according to claim 1 and lateral pressure method, it is characterised in that lead in client
Cross the embedded calculation formula of javascript application systems and draw tractive force and lateral pressure, pass through canvas and generate result of calculation figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825549.8A CN107657093A (en) | 2017-09-14 | 2017-09-14 | A kind of cable laying tractive force and lateral pressure method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710825549.8A CN107657093A (en) | 2017-09-14 | 2017-09-14 | A kind of cable laying tractive force and lateral pressure method |
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| CN201710825549.8A Pending CN107657093A (en) | 2017-09-14 | 2017-09-14 | A kind of cable laying tractive force and lateral pressure method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448322A (en) * | 2020-11-19 | 2021-03-05 | 重庆科技学院 | High-voltage cable laying under high-drop terrain condition and optimization method thereof |
| CN113410799A (en) * | 2021-06-29 | 2021-09-17 | 广东电网有限责任公司 | Cable laying method and device, electronic equipment and storage medium |
| CN114239217A (en) * | 2021-11-09 | 2022-03-25 | 国网天津市电力公司 | Method for calculating cable traction in electric power pull tube |
| CN114491895A (en) * | 2022-04-01 | 2022-05-13 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN116702395A (en) * | 2023-06-14 | 2023-09-05 | 广东电网有限责任公司 | Optimization method for mechanical force of large-section long cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448322A (en) * | 2020-11-19 | 2021-03-05 | 重庆科技学院 | High-voltage cable laying under high-drop terrain condition and optimization method thereof |
| CN113410799A (en) * | 2021-06-29 | 2021-09-17 | 广东电网有限责任公司 | Cable laying method and device, electronic equipment and storage medium |
| CN114239217A (en) * | 2021-11-09 | 2022-03-25 | 国网天津市电力公司 | Method for calculating cable traction in electric power pull tube |
| CN114239217B (en) * | 2021-11-09 | 2024-05-24 | 国网天津市电力公司 | Calculation method for cable traction force in electric power pulling pipe |
| CN114491895A (en) * | 2022-04-01 | 2022-05-13 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN116702395A (en) * | 2023-06-14 | 2023-09-05 | 广东电网有限责任公司 | Optimization method for mechanical force of large-section long cable |
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Application publication date: 20180202 |
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