CN106289711B - A kind of force test in wind tunnel method suitable for lattice round steel pipe power transmission tower - Google Patents
A kind of force test in wind tunnel method suitable for lattice round steel pipe power transmission tower Download PDFInfo
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- CN106289711B CN106289711B CN201610636217.0A CN201610636217A CN106289711B CN 106289711 B CN106289711 B CN 106289711B CN 201610636217 A CN201610636217 A CN 201610636217A CN 106289711 B CN106289711 B CN 106289711B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Abstract
The invention discloses a kind of force test in wind tunnel methods suitable for lattice round steel pipe power transmission tower：Including building power transmission tower model, whole tower experiment is decoupled, tests and is calculated so as to obtain the wind load of whole section and each section paragraph by paragraph.The method of the present invention causes the experiment of lattice steel pipe power transmission tower wind tunnel force measurement both to consider the difference of different tower section structure types and geometric dimension, in turn ensure the consistency of boundary conditions of experiment tower section and practical structures, obtained experimental result can more realistically reflect actual conditions.
Description
Technical field
The present invention relates to a kind of force test in wind tunnel methods, and in particular to one kind is suitable for lattice round steel pipe and transmits electricity
The force test in wind tunnel method of tower.
Background technology
Rigid model wind tunnel test in the prior art is divided into two kinds of manometric test and dynamometer check, but power transmission tower is because it is
Cancelled structure, so generally use aerodynamic balance measuring method obtains Shape Coefficient.Aerodynamic balance measuring can be divided into whole tower test again
With two class of sectionalization test.Whole tower test is directly to measure wind load suffered by whole tower, and full tower is set using unified Shape Coefficient
Meter, but this test method has ignored the difference of tower head, cross-arm and wind characteristic caused by the different structure form of tower body segment
Not.Sectionalization test is then individually to take out a certain tower section to be tested, although the Shape Coefficient of different tower sections can be respectively obtained,
But the actually located wind field of tower section is changed, does not account for influence of the up and down or left and right structure to the tower section flow field.Therefore,
The experimental data that more than test method obtains cannot fully reflect actual conditions.
Although related specifications give using rod piece diameter, fundamental wind pressure as parameter round cross-section rod Shape Coefficient value,
When carrying out steel pipe Deethanizer design, the bar cross section type included by whole tower is various, and the aerodynamic interference between rod piece is not in specification
Middle embodiment, it is therefore necessary to which steel tube tower Shape Coefficient is obtained by wind tunnel test.
Invention content
In view of this, the purpose of the present invention is to provide a kind of wind-tunnel surveys suitable for lattice round steel pipe power transmission tower
Power test method, under the premise of each tower section stress wind field is not changed, test method of the invention can measure different knots respectively
The tower section Shape Coefficient of configuration formula.
Technical scheme is as follows：
A kind of force test in wind tunnel method suitable for lattice round steel pipe power transmission tower includes the following steps：
Step 1：Power transmission tower model is built, by the use of lattice steel tube tower as power transmission tower model, and by lattice steel pipe
Tower makes dismountable multi-segment structure from top to bottom, and individually each section is an overall structure；
Step 2：Whole tower is suspended on a stent, then carries out dynamometer check, obtains the wind load of whole tower；
Step 3：By the one section of dismounting topmost of lattice steel tube tower, then remainder is suspended on above-mentioned stent, so
The dynamometer check with step 2 the same terms is carried out to remainder steel tube tower afterwards, obtains the wind load of remainder steel tube tower,
Then gained wind load twice is subtracted each other into the wind load as removed part；
Step 4：With reference to step 3, each section is gradually removed from top to bottom, it is enterprising that remainder then is suspended on above-mentioned stent
Row dynamometer check obtains each section of wind load successively using the method for step 3.
Further, lattice steel tube tower is split between nine sections, adjacent two sections by being set between main material in step 1
Connector is attached.
Further, the connector is aluminum pipe, and the aluminum pipe is divided into the caliber and steel pipe of three sections of upper, middle and lower, wherein interlude
The outer tube diameter of tower main material is identical, upper-lower section caliber is identical with caliber in steel tube tower main material.
Further, the stent includes a root post and a hanger bracket, and the hitch point set on institute's hanger bracket is described outstanding
Hanger is detachably mounted to by bolt on column, and height of the hanger bracket on column can be adjusted by bolt.
Further, when the power transmission tower model is suspended on stent, the ground clearance of power transmission tower model for 0.5cm ~ 2cm it
Between.
Further, when the power transmission tower model is suspended on stent, the ground clearance of power transmission tower model is 1cm.
The beneficial effects of the present invention are：The method of the present invention causes the experiment of lattice steel pipe power transmission tower wind tunnel force measurement both to examine
Consider the difference of different tower section structure types and geometric dimension, in turn ensure the boundary condition one of experiment tower section and practical structures
Cause property, obtained experimental result can more realistically reflect actual conditions.
Description of the drawings
In order to make the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is lattice steel tube tower structure diagram；
Fig. 2 is supporting structure schematic diagram.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in the figure, a kind of force test in wind tunnel method suitable for lattice round steel pipe power transmission tower, including following step
Suddenly：
Step 1：Power transmission tower model is built, by the use of lattice steel tube tower as power transmission tower model, and by lattice steel pipe
Tower makes dismountable multi-segment structure from top to bottom, and individually each section is an overall structure；
Step 2：Whole tower is suspended on a stent, then carries out dynamometer check, obtains the wind load of whole tower；
Step 3：By the one section of dismounting topmost of lattice steel tube tower, then remainder is suspended on above-mentioned stent, so
The dynamometer check with step 2 the same terms is carried out to remainder steel tube tower afterwards, obtains the wind load of remainder steel tube tower,
Then gained wind load twice is subtracted each other into the wind load as removed part；
Step 4：With reference to step 3, each section is gradually removed from top to bottom, it is enterprising that remainder then is suspended on above-mentioned stent
Row dynamometer check obtains each section of wind load successively using the method for step 3.
In the present embodiment, lattice steel tube tower is split into nine sections in step 1, such as the 1-9 marked in Fig. 1, adjacent two sections
Between by between main material set connector be attached.
In the present embodiment, the connector is aluminum pipe, and the aluminum pipe is divided into three sections of upper, middle and lower, wherein the caliber of interlude with
The outer tube diameter of steel tube tower main material is identical, upper-lower section caliber is identical with caliber in steel tube tower main material.
In the present embodiment, the stent includes a root post and a hanger bracket as described in Figure 2, is set on institute's hanger bracket
Hitch point 11, the hanger bracket are detachably mounted to by bolt on column, and height of the hanger bracket on column can lead to
Cross bolt adjusting.
In the present embodiment, when the power transmission tower model is suspended on stent, when the power transmission tower model is suspended on stent,
The ground clearance of power transmission tower model is 1cm.
The method of the present embodiment causes the experiment of lattice steel pipe power transmission tower wind tunnel force measurement both to consider different tower section structure shapes
The difference of formula and geometric dimension in turn ensures the consistency of boundary conditions of experiment tower section and practical structures, obtained experimental result
It can more realistically reflect actual conditions.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.The equivalent substitute or transformation that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (6)
- A kind of 1. force test in wind tunnel method suitable for lattice round steel pipe power transmission tower, it is characterised in that：Including following step Suddenly：Step 1：Build power transmission tower model, by the use of lattice steel tube tower as power transmission tower model, and by lattice steel tube tower from Top to bottm makes dismountable multi-segment structure, and individually each section is an overall structure；Step 2：Whole tower is suspended on a stent, then carries out dynamometer check, obtains the wind load of whole tower；Step 3：By the one section of dismounting topmost of lattice steel tube tower, then remainder is suspended on above-mentioned stent, it is then right Remainder steel tube tower carries out the dynamometer check with step 2 the same terms, obtains the wind load of remainder steel tube tower, then will Gained wind load subtracts each other the wind load as removed part twice；Step 4：With reference to step 3, each section is gradually removed from top to bottom, then remainder is suspended on above-mentioned stent and is surveyed Power is tested, and each section of wind load is obtained successively using the method for step 3.
- 2. the force test in wind tunnel method according to claim 1 suitable for lattice round steel pipe power transmission tower, feature It is：In step 1 by lattice steel tube tower be split into nine sections, adjacent two sections between by between main material set connector carry out Connection.
- 3. the force test in wind tunnel method according to claim 2 suitable for lattice round steel pipe power transmission tower, feature It is：The connector is aluminum pipe, and the aluminum pipe is divided into three sections of upper, middle and lower, and wherein the caliber of interlude and steel tube tower main material is outer Caliber is identical, the caliber of upper-lower section is identical with caliber in steel tube tower main material.
- 4. the force test in wind tunnel method according to claim 1 suitable for lattice round steel pipe power transmission tower, feature It is：The stent includes a root post and a hanger bracket, is provided with hitch point on the hanger bracket, the hanger bracket passes through Bolt is detachably mounted on column, and height of the hanger bracket on column is adjusted by bolt.
- 5. the force test in wind tunnel method according to claim 1 suitable for lattice round steel pipe power transmission tower, feature It is：When the power transmission tower model is suspended on stent, power transmission tower model ground clearance is between 0.5cm ~ 2cm.
- 6. the force test in wind tunnel method according to claim 5 suitable for lattice round steel pipe power transmission tower, feature It is：When the power transmission tower model is suspended on stent, the ground clearance of power transmission tower model is 1cm.
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| CN107328548A (en) * | 2017-05-24 | 2017-11-07 | 国家电网公司 | A kind of extra-high voltage multiloop power transmission tower Shape Coefficient test method |
| CN107894319A (en) * | 2017-12-29 | 2018-04-10 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of test device of round steel pipe bar Shape Coefficient |
| CN110276157A (en) * | 2019-06-28 | 2019-09-24 | 中国铁塔股份有限公司 | A kind of the Wind load calculating method and relevant device of single-tube communication tower |
| CN112098038B (en) * | 2020-08-27 | 2022-09-20 | 汕头大学 | Rigid body model multipoint synchronous force measuring method under three-dimensional wind action |
| CN113465957A (en) * | 2021-05-17 | 2021-10-01 | 中国人民解放军第六九O五工厂 | Antenna lift mast wind-resistant simulation test system |
| CN113374329B (en) * | 2021-07-08 | 2022-11-18 | 重庆科技学院 | Cross oblique material double-limb connecting node and power transmission tower angle steel connecting structure |
| CN113670562B (en) * | 2021-08-11 | 2023-07-14 | 中国南方电网有限责任公司超高压输电公司广州局 | Support tower device and method for simulating collapse of power transmission tower in wind tunnel test |
| CN113504025B (en) * | 2021-09-13 | 2021-12-14 | 中国航天空气动力技术研究院 | Dynamic load testing method for wind tunnel with large attack angle and low frequency structure |
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