CN108647440A - A kind of confirmation method and device of the structural shape factor of wind load of steel pipe power transmission tower pylon - Google Patents
A kind of confirmation method and device of the structural shape factor of wind load of steel pipe power transmission tower pylon Download PDFInfo
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Abstract
A kind of confirmation method and device of the structural shape factor of wind load of steel pipe power transmission tower pylon, including：The leeward wind load of tubular tower and frame is obtained based on the model in wind tunnel built in advance reduces coefficient；The weighting structural shape factor of wind load of steel pipe power transmission tower truss is obtained according to the construction drawing of steel pipe power transmission tower and residing Characteristics of Wind Field；The structural shape factor of wind load of steel pipe power transmission tower pylon is determined based on the weighting structural shape factor of wind load of leeward wind load reduction coefficient and steel pipe power transmission tower truss, considering steel pipe leeward occlusion effect, pulsation wind scorpion and steel-pipe space position influences, and improves the accuracy for confirming steel pipe power transmission tower structural shape factor of wind load.
Description
Technical field
The present invention relates to Transmission Line Design load calculating fields, and in particular to a kind of wind load of steel pipe power transmission tower pylon
The confirmation method and device of Shape Coefficient.
Background technology
Steel pipe power transmission tower wind effect belongs to typical flow around bluff bodies scope, is often accompanied by air-flow separation, echos vortex again
Phenomena such as falling off, reynolds number effect are complex.Key parameter one of of the Reynolds number as steel pipe power transmission tower Wind load calculating,
Steel pipe segment structural shape factor of wind load can change with the variation of Reynolds number so that steel pipe Transmission Tower is in different incoming wind
Speed is lower to show different response characteristics, how accurately to consider the influence of this variation, be in steel pipe power transmission tower wind force proofing design
Need the critical issue solved.
The structural shape factor of wind load confirmation method of existing steel pipe power transmission tower pylon exists：Steel tube component in practical operation
Equivalent wind action is partial to danger, and the influence factor consideration of reynolds number effect is not comprehensive, therefore, leads to the steel pipe power transmission tower wind calculated
The accuracy of load Shape Coefficient is not high.
Invention content
In order to solve the above-mentioned deficiency in the presence of the prior art, the present invention provides a kind of wind lotus of steel pipe power transmission tower pylon
The confirmation method and device of carrier model coefficient.
Technical solution provided by the invention is：A kind of confirmation method of the structural shape factor of wind load of steel pipe power transmission tower pylon,
Including：
The leeward wind load of tubular tower and frame is obtained based on the model in wind tunnel built in advance reduces coefficient；
The weighting wind load of steel pipe power transmission tower truss is obtained according to the construction drawing of steel pipe power transmission tower and residing Characteristics of Wind Field
Shape Coefficient；
The weighting structural shape factor of wind load that coefficient and steel pipe power transmission tower truss are reduced based on the leeward wind load is determined
The structural shape factor of wind load of steel pipe power transmission tower pylon.
Preferably, described that steel pipe power transmission tower truss is obtained according to the construction drawing and residing Characteristics of Wind Field of steel pipe power transmission tower
Structural shape factor of wind load is weighted, including：
The Reynolds number correction factor of wind field pulsation wind effect is calculated based on the Characteristics of Wind Field residing for steel pipe power transmission tower；
The Reynolds number correction factor of different spatial steel tube component is calculated based on steel pipe power transmission tower construction drawing；
The Reynolds number of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect
Correction factor calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
Preferably, the Characteristics of Wind Field based on residing for steel pipe power transmission tower calculates the Reynolds number amendment of wind field pulsation wind effect
Coefficient is shown below：
KI=1-Iz
In formula：KI：The Reynolds number correction factor of wind field pulsation wind effect；Iz：At the centre of form height z of steel pipe power transmission tower segment
Turbulence intensity；z：Steel pipe power transmission tower segment centre of form height；
Wherein, the turbulence intensity I at steel pipe power transmission tower segment centre of form height zz, it is calculated as follows：
In formula：IH：The turbulence intensity of height H；H：Preset height；α：Ground roughness exponent.
Preferably, the Reynolds number amendment system that different spatial steel tube component is calculated based on steel pipe power transmission tower construction drawing
Number, is shown below：
In formula：Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；βi：Wind direction and i-th steel pipe
The angle of component axial direction.
Preferably, the Reynolds number correction factor and different spatial steel pipe structure of the wind effect of being pulsed based on the wind field
The Reynolds number correction factor of part calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss, including：
The Reynolds number of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect
Correction factor calculates revised steel pipe power transmission tower component Reynolds number；
The wind load build system of steel pipe power transmission tower pylon is calculated according to the revised steel pipe power transmission tower component Reynolds number
Number；
Effective projected area of structural shape factor of wind load and steel tube component based on the steel pipe power transmission tower pylon calculates
To the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
Preferably, the Reynolds number correction factor and different spatial steel pipe structure of the wind effect of being pulsed based on the wind field
The Reynolds number correction factor of part calculates revised steel pipe power transmission tower component Reynolds number, is shown below：
Rei=KIKsi(6.9×104VzDi)
In formula：Rei：The Reynolds number of revised i-th steel tube component；KI：The Reynolds number amendment system of wind field pulsation wind effect
Number；Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；Vz：At the centre of form height z of steel pipe power transmission tower segment
Conversion wind speed；z：Steel pipe power transmission tower segment centre of form height；Di：The outer diameter of i-th steel tube component.
Preferably, the wind that steel pipe power transmission tower pylon is calculated according to the revised steel pipe power transmission tower component Reynolds number
Load Shape Coefficient, is shown below：
In formula：CDFi：The structural shape factor of wind load of i-th steel pipe in steel pipe power transmission tower pylon；Rei：I-th steel pipe after amendment
The Reynolds number of component.
Preferably, the structural shape factor of wind load and steel pipe power transmission tower truss based on the steel pipe power transmission tower pylon plus
The weighting structural shape factor of wind load of steel pipe power transmission tower truss is calculated in power structural shape factor of wind load, is shown below：
In formula：The weighting structural shape factor of wind load of steel pipe power transmission tower truss；CDFi：I-th in steel pipe power transmission tower pylon
The structural shape factor of wind load of steel tube component；Ai：The weighting wind load build system of i-th steel tube component in steel pipe power transmission tower truss
Number.
Preferably, the leeward wind load that tubular tower and frame is obtained based on model in wind tunnel reduces coefficient, including：
In the model in wind tunnel pre-established, windward side structural shape factor of wind load and leeward wind load build are measured
Coefficient；
Tubular tower and frame is calculated based on the leeward structural shape factor of wind load and windward side structural shape factor of wind load
Leeward wind load reduces coefficient；
The model in wind tunnel is determined according to the structural working drawing of steel pipe power transmission tower.
Preferably, described to be calculated based on the leeward structural shape factor of wind load and windward side structural shape factor of wind load
The leeward wind load of tubular tower and frame reduces coefficient, is shown below：
In formula：η：The leeward wind load of tubular tower and frame reduces coefficient；μb：Leeward structural shape factor of wind load；μf：Windward
Face structural shape factor of wind load.
Preferably, the weighting wind load body that coefficient and steel pipe power transmission tower truss are reduced based on the leeward wind load
Type coefficient determines the structural shape factor of wind load of steel pipe power transmission tower pylon, is shown below：
In formula：CDT：The structural shape factor of wind load of steel pipe power transmission tower pylon；The weighting wind lotus of steel pipe power transmission tower truss
Carrier model coefficient；η：The leeward wind load of tubular tower and frame reduces coefficient.
Based on same inventive concept, the present invention also provides a kind of structural shape factor of wind load of steel pipe power transmission tower pylon really
Recognize device, including：
Leeward coefficient module, the leeward wind lotus for obtaining tubular tower and frame based on the model in wind tunnel built in advance
Carrying reduces coefficient；
Fluctuating wind module, for obtaining steel pipe power transmission tower purlin according to the construction drawing and residing Characteristics of Wind Field of steel pipe power transmission tower
The weighting structural shape factor of wind load of frame；
Determining module, the weighting wind load for reducing coefficient and steel pipe power transmission tower truss based on the leeward wind load
Shape Coefficient determines the structural shape factor of wind load of steel pipe power transmission tower pylon.
Preferably, the fluctuating wind module, including：
First corrects submodule, the thunder for calculating wind field pulsation wind effect based on the Characteristics of Wind Field residing for steel pipe power transmission tower
Promise number correction factor；
Second corrects submodule, the Reynolds for calculating different spatial steel tube component based on steel pipe power transmission tower construction drawing
Number correction factor；
Fluctuating wind submodule, Reynolds number correction factor and different spatial for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of steel tube component calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
Preferably, the fluctuating wind submodule, including：
First result unit, Reynolds number correction factor and different spatial for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of steel tube component calculates revised steel pipe power transmission tower component Reynolds number；
Second result unit, for calculating steel pipe power transmission tower tower according to the revised steel pipe power transmission tower component Reynolds number
The structural shape factor of wind load of frame；
Third result unit, for based on the steel pipe power transmission tower pylon structural shape factor of wind load and steel tube component have
The weighting structural shape factor of wind load of steel pipe power transmission tower truss is calculated in effect projected area.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
Technical solution provided by the invention obtains the leeward wind of tubular tower and frame based on the model in wind tunnel built in advance
Load reduces coefficient；The weighting wind of steel pipe power transmission tower truss is obtained according to the construction drawing of steel pipe power transmission tower and residing Characteristics of Wind Field
Load Shape Coefficient；The weighting structural shape factor of wind load of coefficient and steel pipe power transmission tower truss is reduced based on the leeward wind load
Determine the structural shape factor of wind load of steel pipe power transmission tower pylon, it is contemplated that steel pipe leeward occlusion effect, pulsation wind scorpion and steel pipe
Spatial position influences, and improves the accuracy for confirming steel pipe power transmission tower structural shape factor of wind load.
Description of the drawings
Fig. 1 is a kind of confirmation method flow chart of the structural shape factor of wind load of steel pipe power transmission tower pylon of the present invention；
Fig. 2 is the spatial position schematic diagram of steel tube component and direction of flow in the present invention；
Fig. 3 is the construction drawing of steel pipe power transmission tower tower body segment of the present invention；
1- steel tube component axis；2- steel tube components；The ellipse of horizontal plane and steel tube component axis direction is cut where 3- incomings
The major diameter of plane；4- tower body main materials；5- tabulas face horizontal member；The oblique material of 6- tower bodies.
Specific implementation mode
For a better understanding of the present invention, present disclosure is done further with example with reference to the accompanying drawings of the specification
Explanation.
Embodiment 1
Fig. 1 is a kind of confirmation method flow chart of the structural shape factor of wind load of steel pipe power transmission tower pylon, as described in Figure 1, packet
Include following steps：
Step S101, the leeward wind load of tubular tower and frame is obtained based on the model in wind tunnel built in advance reduces system
Number；
Step S102, adding for steel pipe power transmission tower truss, is obtained according to the construction drawing of steel pipe power transmission tower and residing Characteristics of Wind Field
Weigh structural shape factor of wind load；
Step S103, the weighting wind load build of coefficient and steel pipe power transmission tower truss is reduced based on the leeward wind load
Coefficient determines the structural shape factor of wind load of steel pipe power transmission tower pylon.
Step S101 is specifically included：
In the model in wind tunnel pre-established, tubular tower and frame windward side is connected with high-frequency color Doppler, leeward
It detaches with high-frequency color Doppler and is moved on rail plate, measure windward side structural shape factor of wind load；
Tubular tower and frame leeward is connected with high-frequency color Doppler again, windward side detaches and is mounted on high-frequency color Doppler
It is moved on rail plate, measures leeward structural shape factor of wind load；
The leeward of tubular tower and frame is calculated based on leeward structural shape factor of wind load and windward side structural shape factor of wind load
Face wind load reduces coefficient, is shown below：
In formula：η：The leeward wind load of tubular tower and frame reduces coefficient；μb：Leeward structural shape factor of wind load；μf：Windward
Face structural shape factor of wind load.
It is designed model in wind tunnel according to the structural working drawing of steel pipe power transmission tower.
Step S102 is specifically included：
1. the Reynolds number correction factor of wind field pulsation wind effect is calculated based on the Characteristics of Wind Field residing for steel pipe power transmission tower, it is as follows
Shown in formula：
KI=1-Iz
In formula：KI：The Reynolds number correction factor of wind field pulsation wind effect；Iz：At the centre of form height z of steel pipe power transmission tower segment
Turbulence intensity；z：Steel pipe power transmission tower segment centre of form height；
Wherein, the turbulence intensity I at steel pipe power transmission tower segment centre of form height zz, it is calculated as follows：
In formula：IH：The turbulence intensity of height H；H：Preset height；α：Ground roughness exponent.
In the present embodiment, preset height H=10, then the turbulence intensity I at steel pipe power transmission tower segment centre of form height zz, press
Following formula calculates：
In formula：I10：The turbulence intensity of height 10m.
2. calculating the Reynolds number correction factor of different spatial steel tube component based on steel pipe power transmission tower construction drawing；
A, steel tube component axis and outer diameter of steel pipes are determined according to steel pipe power transmission tower construction drawing；
B, the long axis of horizontal plane and the oval tangent plane of steel tube component axis direction where calculating incoming according to outer diameter of steel pipes
Diameter, it is shown as the following formula：
In formula：Dci：Major diameter；Di：The outer diameter of i-th steel tube component；βi：Wind direction and i-th steel tube component are axial
Angle.
C, steel tube component spatial position is calculated to the correction factor of Reynolds number according to major diameter, be shown below：
In formula：Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number.
By the formula in b and c it is found that calculating the Reynolds of different spatial steel tube component based on steel pipe power transmission tower construction drawing
Number correction factor, can also be calculated as follows：
In formula：Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；βi：Wind direction and i-th steel pipe
The angle of component axial direction.
3. the Reynolds number of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect is repaiied
Positive coefficient calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss, including：
A, the Reynolds number of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect is repaiied
Positive coefficient calculates revised steel pipe power transmission tower component Reynolds number, is shown below：
Rei=KIKsi(6.9×104VzDi)
In formula：Rei：The Reynolds number of revised i-th steel tube component；KI：The Reynolds number amendment system of wind field pulsation wind effect
Number；Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；Vz：At the centre of form height z of steel pipe power transmission tower segment
Conversion wind speed；z：Steel pipe power transmission tower segment centre of form height；Di：The outer diameter of i-th steel tube component.
B, the structural shape factor of wind load of steel pipe power transmission tower pylon is calculated according to revised steel pipe power transmission tower component Reynolds number,
It is shown below：
In formula：CDFi：The structural shape factor of wind load of i-th steel pipe in steel pipe power transmission tower pylon；Rei：I-th steel pipe after amendment
The Reynolds number of component.
C, effective projected area of structural shape factor of wind load and steel tube component based on steel pipe power transmission tower pylon is calculated
The weighting structural shape factor of wind load of steel pipe power transmission tower truss, is shown below：
In formula：The weighting structural shape factor of wind load of steel pipe power transmission tower truss；Ai：I-th in steel pipe power transmission tower truss
The weighting structural shape factor of wind load of steel tube component.
Step S103 is specifically included：
The weighting structural shape factor of wind load that coefficient and steel pipe power transmission tower truss are reduced based on leeward wind load determines steel pipe
The structural shape factor of wind load of power transmission tower pylon, is shown below：
In formula：CDT：The structural shape factor of wind load of steel pipe power transmission tower pylon；The weighting wind lotus of steel pipe power transmission tower truss
Carrier model coefficient；η：The leeward wind load of tubular tower and frame reduces coefficient.
The confirmation method of offer in the present embodiment, solving current specifications confirmation method can not consider that steel pipe leeward hides
The problem of effect, pulsation wind scorpion and steel-pipe space position influence is kept off, there is better applicability and higher precision.
Embodiment 2
By taking the 500kV transmission line of electricity steel pipe power transmission towers of certain mountain area as an example, as shown in figure 3, the segment tower body main material, tabula face water
The specification of flat component and the oblique material of tower body is respectively Φ 356 × 10, Φ 168 × 5 and Φ 219 × 5.Wind field roughness class residing for the tower
Not Wei B classes, design wind speed V=30m/s, the centre of form of segment is apart from ground level z=20m shown in attached drawing 3.
Step (1) determines that the leeward wind load of tubular tower and frame reduces coefficient
According to steel pipe Transmission Tower construction drawing design steel pipe power transmission tower segment full size model in wind tunnel, respectively steel pipe
Pylon windward side or leeward are individually connected with high-frequency color Doppler, another face be mounted on rail plate on move, the face with
High-frequency color Doppler detaches, and measures leeward structural shape factor of wind load μ respectivelybWith windward side structural shape factor of wind load μf, by formula
(a) the leeward wind load of tubular tower and frame, which is calculated, reduces coefficient η.
First, in accordance with step (1) method, the segmental construction G- Design steel pipe of 3 steel tube power transmission tower tower bodies is defeated with reference to the accompanying drawings
Pylon segment full size model in wind tunnel, is individually connected tubular tower and frame windward side or leeward with high-frequency color Doppler respectively,
Another face is mounted on rail plate and moves, which detaches with high-frequency color Doppler, measures leeward wind load build respectively
Coefficient μb=0.84 and windward side structural shape factor of wind load μf=1.40, the leeward wind lotus of tubular tower and frame is calculated by formula (a)
Carrying reduces coefficient η.
η=0.84/1.40=0.60
Step (2) considers the Reynolds number correction factor of practical wind field pulsation wind effect
By the practical Characteristics of Wind Field residing for steel pipe power transmission tower, determine that the turbulent flow at the centre of form height z of steel pipe power transmission tower segment is strong
Spend Iz, by turbulence intensity IzCalculate the Reynolds number adjusted coefficient K of steel tube componentI：
In formula：IH：The turbulence intensity of height H；H：Preset height；α：Ground roughness exponent.
In the present embodiment, preset height H=10, then the turbulence intensity I at height zz, it is calculated as follows：
KI=1-Iz (c)
In formula：IzIt is the parameter for characterizing wind field pulsation wind scorpion for turbulence intensity；I10It is right for the turbulence intensity of 10m eminences
0.12,0.14,0.23 and 0.39 should be taken respectively in A, B, C and D class landforms；α is ground roughness exponent, correspond to A, B, C and
D class landforms, take 0.12,0.15,0.22 and 0.30 respectively.
According to step (2) method, wind field roughness classification residing for the tower is B classes, ground roughness exponent α=0.15, section
The centre of form of section is obtained apart from ground level z=20m by formula (b)：
It is obtained by formula (c)：
KI=1-Iz=1-0.126=0.874.
The Reynolds number correction factor of step (3) different spatial steel tube component
I-th steel tube component axis direction and outer diameter of steel pipes D are determined by steel pipe power transmission tower construction drawingi, calculate incoming place
The major diameter D of the oval tangent plane of horizontal plane and i-th steel tube component axis directionci, as shown in Fig. 2, calculating the by formula (e)
The Reynolds number adjusted coefficient K of i root steel tube components spatial position steel pipe pendantsi：
In formula：βiFor the angle (°) of wind direction and i-th steel tube component axial direction.
According to step (3) method, it is oblique to calculate separately 3 tower body segment tower body main material of attached drawing, tabula face horizontal member and tower body
The Reynolds number correction factor of the steel tube component of material, the front of typical steel pipe power transmission tower tower body segmental construction figure and side phase in Fig. 3
Together.
The outer diameter of steel pipes D of tower body main material, tabula face horizontal member and the oblique material of tower bodyiRespectively 0.356m, 0.168m and
0.219m, the angle β of wind direction and steel tube component axial directioniRespectively 65 °, 90 ° and 40 °；
The major diameter D of horizontal plane and the oval tangent plane of steel tube component axis direction where obtaining incoming by formula (d)ciPoint
It Wei not 0.393m, 0.168m and 0.341m；
The Reynolds number adjusted coefficient K of three component spatial position steel pipe pendants is obtained by formula (e)siRespectively 1.104,1.0,
1.557。
Step (4) steel pipe power transmission tower segment monolithic truss structural shape factor of wind load calculates
According to the determining tower body segment tower body main material of step (2), step (3), tabula face horizontal member and the oblique material of tower body
The Reynolds number adjusted coefficient K of steel tube componentIAnd Ksi；
According to formula (f) calculate tower body main material, tabula face horizontal member and the oblique material of tower body Reynolds number ReiRespectively 7.85
×105、3.04×105With 6.17 × 105；
Rei=KIKsi(6.9×104VzDi) (f)
Then the structural shape factor of wind load C of three components is calculated according to formula (g)DFiRespectively 0.6,0.83 and 0.6.Three
The projected area A of steel tube componentiRespectively 6m2、1m2And 3m2；
In formula：CDFi：The structural shape factor of wind load of i-th steel pipe in steel pipe power transmission tower pylon；Rei：I-th steel pipe after amendment
The Reynolds number of component.
Steel pipe power transmission tower segment is calculated according to formula (h) and weights structural shape factor of wind loadFor：
Parameter values are substituted into obtain：
In formula：VzFor altitude conversion wind speed (m/s) residing for the tubular tower and frame centre of form；DiFor the component outer diameter (m) of i-th steel pipe.
Step (5) steel pipe power transmission tower pylon structural shape factor of wind load calculates
According to step (1) and step (4), respectively obtaining steel pipe power transmission tower leeward wind load reduces coefficient correction factor η
Structural shape factor of wind load is weighted with monolithic truss
The structural shape factor of wind load of steel pipe power transmission tower pylon is calculated according to formula (i)：
CDT=0.623 × (1+0.6)=0.997.
Based on same inventive concept, the present embodiment additionally provides a kind of structural shape factor of wind load of steel pipe power transmission tower pylon
Determining device, including：
Leeward coefficient module, the leeward wind lotus for obtaining tubular tower and frame based on the model in wind tunnel built in advance
Carrying reduces coefficient；
Fluctuating wind module, for obtaining steel pipe power transmission tower purlin according to the construction drawing and residing Characteristics of Wind Field of steel pipe power transmission tower
The weighting structural shape factor of wind load of frame；
Determining module, the weighting wind load for reducing coefficient and steel pipe power transmission tower truss based on the leeward wind load
Shape Coefficient determines the structural shape factor of wind load of steel pipe power transmission tower pylon.
In embodiment, the fluctuating wind module, including：
First corrects submodule, the thunder for calculating wind field pulsation wind effect based on the Characteristics of Wind Field residing for steel pipe power transmission tower
Promise number correction factor；
Second corrects submodule, the Reynolds for calculating different spatial steel tube component based on steel pipe power transmission tower construction drawing
Number correction factor；
Fluctuating wind submodule, Reynolds number correction factor and different spatial for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of steel tube component calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
The fluctuating wind submodule, including：
First result unit, Reynolds number correction factor and different spatial for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of steel tube component calculates revised steel pipe power transmission tower component Reynolds number；
Second result unit, for calculating steel pipe power transmission tower tower according to the revised steel pipe power transmission tower component Reynolds number
The structural shape factor of wind load of frame；
Third result unit, for based on the steel pipe power transmission tower pylon structural shape factor of wind load and steel tube component have
The weighting structural shape factor of wind load of steel pipe power transmission tower truss is calculated in effect projected area.
The leeward coefficient module, including：
First measuring unit, in the model in wind tunnel pre-established, tubular tower and frame windward side and high frequency to be surveyed
Power balance is connected, and leeward is detached with high-frequency color Doppler and moved on rail plate, measures windward side wind load body
Type coefficient；
Second measuring unit, for tubular tower and frame leeward to be connected with high-frequency color Doppler, windward side and high frequency dynamometry
Balance is detached and is moved on rail plate, measures leeward structural shape factor of wind load；
Leeward coefficient elements are calculated, for being based on the leeward structural shape factor of wind load and windward side wind load build
The leeward wind load that tubular tower and frame is calculated in coefficient reduces coefficient；
Design cell, for being designed the model in wind tunnel according to the structural working drawing of steel pipe power transmission tower.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It these are only the embodiment of the present invention, be not intended to restrict the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (14)
1. a kind of confirmation method of the structural shape factor of wind load of steel pipe power transmission tower pylon, which is characterized in that including：
The leeward wind load of tubular tower and frame is obtained based on the model in wind tunnel built in advance reduces coefficient；
The weighting wind load build of steel pipe power transmission tower truss is obtained according to the construction drawing of steel pipe power transmission tower and residing Characteristics of Wind Field
Coefficient；
The weighting structural shape factor of wind load that coefficient and steel pipe power transmission tower truss are reduced based on the leeward wind load determines steel pipe
The structural shape factor of wind load of power transmission tower pylon.
2. confirmation method as described in claim 1, which is characterized in that the construction drawing according to steel pipe power transmission tower and residing
Characteristics of Wind Field obtains the weighting structural shape factor of wind load of steel pipe power transmission tower truss, including：
The Reynolds number correction factor of wind field pulsation wind effect is calculated based on the Characteristics of Wind Field residing for steel pipe power transmission tower；
The Reynolds number correction factor of different spatial steel tube component is calculated based on steel pipe power transmission tower construction drawing；
The Reynolds number amendment of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect
Coefficient calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
3. confirmation method as claimed in claim 2, which is characterized in that the Characteristics of Wind Field meter based on residing for steel pipe power transmission tower
The Reynolds number correction factor for calculating wind field pulsation wind effect, is shown below：
KI=1-Iz
In formula：KI：The Reynolds number correction factor of wind field pulsation wind effect；Iz：Turbulent flow at the centre of form height z of steel pipe power transmission tower segment
Intensity；z：Steel pipe power transmission tower segment centre of form height；
Wherein, the turbulence intensity I at steel pipe power transmission tower segment centre of form height zz, it is calculated as follows：
In formula：IH：The turbulence intensity of height H；H：Preset height；α：Ground roughness exponent.
4. confirmation method as claimed in claim 2, which is characterized in that described to calculate different skies based on steel pipe power transmission tower construction drawing
Between position steel tube component Reynolds number correction factor, be shown below：
In formula：Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；βi：Wind direction and i-th steel tube component
Axial angle.
5. confirmation method as claimed in claim 2, which is characterized in that the Reynolds number of the wind effect of being pulsed based on the wind field
The Reynolds number correction factor of correction factor and different spatial steel tube component calculates the weighting wind load of steel pipe power transmission tower truss
Shape Coefficient, including：
The Reynolds number amendment of Reynolds number correction factor and different spatial steel tube component based on wind field pulsation wind effect
Coefficient calculates revised steel pipe power transmission tower component Reynolds number；
The structural shape factor of wind load of steel pipe power transmission tower pylon is calculated according to the revised steel pipe power transmission tower component Reynolds number；
Steel is calculated in effective projected area of structural shape factor of wind load and steel tube component based on the steel pipe power transmission tower pylon
The weighting structural shape factor of wind load of pipe power transmission tower truss.
6. confirmation method as claimed in claim 5, which is characterized in that the Reynolds number of the wind effect of being pulsed based on the wind field
The Reynolds number correction factor of correction factor and different spatial steel tube component calculates revised steel pipe power transmission tower component Reynolds
Number, is shown below：
Rei=KIKsi(6.9×104VzDi)
In formula：Rei：The Reynolds number of revised i-th steel tube component；KI：The Reynolds number correction factor of wind field pulsation wind effect；
Ksi：Correction factor of the spatial position of i-th steel tube component to Reynolds number；Vz：Changing at the centre of form height z of steel pipe power transmission tower segment
Calculate wind speed；z：Steel pipe power transmission tower segment centre of form height；Di：The outer diameter of i-th steel tube component.
7. confirmation method as claimed in claim 5, which is characterized in that described according to the revised steel pipe power transmission tower component
Reynolds number calculates the structural shape factor of wind load of steel pipe power transmission tower pylon, is shown below：
In formula：CDFi：The structural shape factor of wind load of i-th steel pipe in steel pipe power transmission tower pylon；Rei：I-th steel tube component after amendment
Reynolds number.
8. confirmation method as claimed in claim 5, which is characterized in that the wind load based on the steel pipe power transmission tower pylon
The weighting wind lotus of steel pipe power transmission tower truss is calculated in the weighting structural shape factor of wind load of Shape Coefficient and steel pipe power transmission tower truss
Carrier model coefficient, is shown below：
In formula：The weighting structural shape factor of wind load of steel pipe power transmission tower truss；CDFi：I-th steel pipe in steel pipe power transmission tower pylon
The structural shape factor of wind load of component；Ai：The weighting structural shape factor of wind load of i-th steel tube component in steel pipe power transmission tower truss.
9. confirmation method as described in claim 1, which is characterized in that described to obtain tubular tower and frame based on model in wind tunnel
Leeward wind load reduces coefficient, including：
In the model in wind tunnel pre-established, leeward structural shape factor of wind load and windward side wind load build system are measured
Number；
The leeward of tubular tower and frame is calculated based on the leeward structural shape factor of wind load and windward side structural shape factor of wind load
Face wind load reduces coefficient；
The model in wind tunnel is determined according to the structural working drawing of steel pipe power transmission tower.
10. confirmation method as claimed in claim 9, which is characterized in that described to be based on the leeward structural shape factor of wind load
The leeward wind load of tubular tower and frame is calculated with windward side structural shape factor of wind load reduces coefficient, is shown below：
In formula：η：The leeward wind load of tubular tower and frame reduces coefficient；μb：Leeward structural shape factor of wind load；μf：Windward side wind
Load Shape Coefficient.
11. confirmation method as described in claim 1, which is characterized in that described to reduce coefficient based on the leeward wind load
The structural shape factor of wind load of steel pipe power transmission tower pylon, such as following formula are determined with the weighting structural shape factor of wind load of steel pipe power transmission tower truss
It is shown：
In formula：CDT：The structural shape factor of wind load of steel pipe power transmission tower pylon；The weighting wind load build of steel pipe power transmission tower truss
Coefficient；η：The leeward wind load of tubular tower and frame reduces coefficient.
12. a kind of confirmation device of the structural shape factor of wind load of steel pipe power transmission tower pylon, which is characterized in that including：
Leeward coefficient module, the leeward wind load for being obtained tubular tower and frame based on the model in wind tunnel built in advance are dropped
Low coefficient；
Fluctuating wind module, for obtaining steel pipe power transmission tower truss according to the construction drawing and residing Characteristics of Wind Field of steel pipe power transmission tower
Weight structural shape factor of wind load；
Determining module, the weighting wind load build for reducing coefficient and steel pipe power transmission tower truss based on the leeward wind load
Coefficient determines the structural shape factor of wind load of steel pipe power transmission tower pylon.
13. confirming device as claimed in claim 12, which is characterized in that the fluctuating wind module, including：
First corrects submodule, the Reynolds number for calculating wind field pulsation wind effect based on the Characteristics of Wind Field residing for steel pipe power transmission tower
Correction factor；
Second corrects submodule, and the Reynolds number for being calculated different spatial steel tube component based on steel pipe power transmission tower construction drawing is repaiied
Positive coefficient；
Fluctuating wind submodule, Reynolds number correction factor and different spatial steel pipe for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of component calculates the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
14. confirming device as claimed in claim 13, which is characterized in that the fluctuating wind submodule, including：
First result unit, Reynolds number correction factor and different spatial steel pipe for wind effect of being pulsed based on the wind field
The Reynolds number correction factor of component calculates revised steel pipe power transmission tower component Reynolds number；
Second result unit, for calculating steel pipe power transmission tower pylon according to the revised steel pipe power transmission tower component Reynolds number
Structural shape factor of wind load；
Third result unit is used for effective throwing of structural shape factor of wind load and steel tube component based on the steel pipe power transmission tower pylon
Shadow areal calculation obtains the weighting structural shape factor of wind load of steel pipe power transmission tower truss.
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