CN104164984B - A kind of large cooling column barrel space geometry localization method with ribbing - Google Patents
A kind of large cooling column barrel space geometry localization method with ribbing Download PDFInfo
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Abstract
The present invention relates to a kind of large cooling column barrel space geometry localization method with ribbing, comprise: (1) determines centre of cooling column point, guide rail control point and rib central point, (2) guide rail control point space coordinates controls, (3) radius at guide rail control point controls, (4) with spirit level or plumbous bell, the upright position to rib is finely tuned, and (5) chord length Survey control makes the actual chord length between the rib central point of adjacent rib and between design chord length, deviate controls within 3mm.Thus ensure that the construction of Cooling Tower Wall and rib space geometry location, fully ensure that the construction deviation of barrel and rib is within 3 millimeters, make the straight smoothness of the outward curve of double-curve cooling column.
Description
Technical field
The present invention relates to construction engineering technical field, be specifically related to a kind of large cooling column barrel space geometry localization method with ribbing.
Background technology
Cooling tower generally forms a hyperbolic transmission tower by the round tube wall often saving high about 1.5m, often saving barrel is be assembled into a sub-circular by inside and outside identical large form, then concreting forms the barrel of a sub-circular, and every block large form seam crossing is connected and fixed by inside and outside guide rail and inside and outside expansion loop.The construction of current Cooling Tower Wall mainly adopts the electronic climbing formwork for construction of " Harmon III " type, and it is a complete set of, and construction achieves mechanization, guide rail more easily controls, and both can greatly reduce the labour intensity of constructor, also can realize barrel center zero-deviation.The control of large cooling column barrel physical dimension is the most important thing of cooling tower construction process, and cooling tower shell radius error is the key factor affecting barrel supporting capacity.And the inclined in the vertical direction 5-8cm of its physical dimension, naked eyes cannot find, therefore be that the rib of a few font replaces by the External compensator cross section of the outer wall of barrel, and rib and barrel are built integral, by the upright position observed with measure rib, then can reach and the space geometry of Cooling Tower Wall is located.
In order to ensure the accuracy of barrel physical dimension, generally traditional employing cross is looked for middle method to measure, the physical dimension of Cooling Tower Wall is measured, it mainly relies on and draws tape measure to measure, the method advantage is that device simple is easy to operate, shortcoming is that certainty of measurement is poor, and is subject to the impact of manpower factor, and the elasticity etc. as pulling force, tape measure all directly affects the precision of construction survey.And comparatively large for the measure error of large-scale, high-order cooling tower, have a strong impact on result of use and the application life of cooling tower.In addition, also have and adopt the optical optical plummet to measure, it made amount of radiation according to interior climbing support quantity before this on pond baseboard, fixed two reference dimension points on every bar ray, after complete Deng concrete placings, with optics Instrument measuring barrel radius, namely plumb aligner frame is projected to on Scale ruler on survey mark, actual horizontal range can be calculated, then barrel radius error value is calculated, the last deviation calculating correction according to this radius error value, make each horizontal radius equal, thus reach and prevent this joint cross section undulate, but the precision of this measuring method is inadequate, radius and the perpendicularity deviation of barrel are large, on the result of use of cooling tower and there is impact in addition application life.
Summary of the invention
The object of the present invention is to provide and a kind ofly measure large cooling column barrel space geometry localization method with ribbing accurately, make that Cooling Tower Wall outward appearance is neat, lines are straight and physical dimension accurate, improve the bearing capacity of cooling tower and extend its useful life.
For achieving the above object, present invention employs following technical scheme:
A kind of large cooling column barrel space geometry localization method with ribbing, the often joint barrel of described Cooling Tower Wall forms cylindrical shape by assembled the building of large form, the outer wall compartment of terrain of large form junction is arranged vertically rib and builds integral by itself and large form between two, comprises the following steps:
(1) centre of cooling column point, guide rail control point and rib central point is determined, wherein:
Centre of cooling column point refers to the central point bottom cooling tower on ground line;
Guide rail control point refer to select on the top end face being positioned at guide rail inside large form junction between two same position a bit;
Rib central point refers to the intersection point at the lateral surface and rib vertical center line often saving the rib on barrel;
(2) guide rail control point space coordinates controls: total powerstation is placed on the actual coordinate that each guide rail control point is measured at centre of cooling column point place;
Go out space coordinates computed (Xn, Yn) often saving each guide rail control point on barrel again according to following formulae discovery, formula is as follows:
Xn＝X
0+(R-L)*cosα
Yn＝Y
0+(R-L)*sinα
X in above formula
0, Y
0that centre of cooling column point has coordinate,
R is the outer radius of each joint barrel,
L is the distance between guide rail control point to barrel outer wall,
α is the angle of line and coordinate X-axis between centre of cooling column point and guide rail control point;
The position of interior guide rail is adjusted according to the deviation between the actual coordinate at same guide rail control point and coordinates computed;
(3) radius at guide rail control point controls: the real radius measuring each guide rail control point, and the radius adjusting rib and barrel according to the deviation of the design radial at itself and this guide rail control point; And accordingly the upright position often saving barrel and rib is carried out adjustment reinforcing;
(4) with spirit level or plumbous bell, the upright position to rib is finely tuned;
(5) chord length Survey control: first measure the chord length Lx between the rib central point often saving the adjacent rib on barrel, then calculate design chord length Ly; Finally compare the numerical bias value of Lx and Ly, and repeat above-mentioned steps (1)-(4) until deviate controls within 3mm.
Further, the measuring method of the real radius at described step (3) middle guide control point is: the line between the subpoint first formed on the ground at the rib central point often saved on barrel and centre of cooling column point chooses survey mark; Then on survey mark, place laser plummet, horizontal positioned laser accepts instrument on guide rail control point, and make laser accept instrument center line to overlap with laser plummet camera lens cross hairs (make the subpoint at rib central point and guide rail control point is in alignment can ensure the verticality of rib at vertical direction), then the real radius r at guide rail control point
n=A+D, wherein A represents the distance of this survey mark to centre of cooling column point, and D represents that laser accepts the reading on instrument.
Further, choosing of described survey mark transit is placed on centre of cooling column point, launches the subpoint of rib central point according to the design angle of rib on ground line, then selects at centre of cooling column and subpoint line selects the position of whole rice to be survey mark.
Further, finely tuning with the upright position of spirit level to rib in described step (4) is by the outer edge near rib perpendicular to the ground for spirit level, the upright position of rib is finely tuned in upright position according to spirit level, makes the outer edge of rib parallel with between spirit level;
The upright position of the plumbous bell of described use to rib is finely tuned, and refer to that the vertical fixed with square is near rib template outer edge, fine setting rib makes the outer edge of rib parallel with vertical.
Further, in described step (5), the design formulas of design chord length Ly is Ly=2 (R+h) * sin (β/2),
Wherein R-barrel outer radius
H-costal process goes out the thickness of barrel
Angle between the rib central point of β-adjacent rib and centre of cooling column point line.
The double-curve cooling column that the present invention constructs to barrel ribbing and adopt the state-of-the-art laser measurement method of current domestic cooling tower construction, total powerstation measuring point control method and traditional spirit level, plummet degree control, chord length measure Comprehensive Control barrel that the methods such as checks combine and the method for the space geometry location of rib reaches to locate Cooling Tower Wall space geometry and controls, and can control the radius of barrel and rib and perpendicularity deviation within 3mm.
Cooling tower generally saves to water build up a hyperbolic transmission tower by often saving the high round tube wall one of about 1.5m, often saving barrel is be assembled into a sub-circular by inside and outside each 132 pieces of identical large forms, then concreting forms the barrel of a sub-circular, every block large form seam crossing is connected and fixed by inside and outside guide rail and inside and outside expansion loop (rib) and forms, and External compensator is rib.As long as so guide rail location is correct, would not there be problem the location of barrel, therefore adopts total powerstation measuring point positioning guide rail control point and carry out repetition measurement with laser plummet and Sopwith staff cooperation.
Rib is the most important part of double-curve cooling column appearance design, because large cooling column does not originally have rib, if the large 5-8cm of certain position radius of tower or the inclined 5-8cm of vertical direction, at diameter more than 80m, highly with the naked eye can't see more than on the large cooling column of 180m.But after in the periphery of cooling tower, interval vertical arranges rib equably from bottom to top, be equivalent to draw 66 control lines on barrel, the deviation of the radius or verticality that substantially exceed 2cm just can visually see out easily.
So beneficial effect of the present invention has:
1, Cooling Tower Wall of the present invention adopts ribbing new construction, and rib is arranged vertically from bottom to top equably in barrel periphery, and the upright position controlling rib when building just can control the verticality of barrel, thus protects the space geometry location of barrel.
2, the present invention adopts four pacing metering methods to come the space geometry location of controlled cooling model tower barrel length by length, makes the radius of barrel and rib and perpendicularity deviation within 3mm.
3, the present invention is by Cooling Tower Wall Construction precision controlling within 3mm, is a quantum leap of cooling tower construction technology, reaches world-class level to the accurate control of cooling tower construction.
4, double-curve cooling column is as a power plant and even a regional landmark building, invention increases its construction control precision, improve overall aesthetics and the artistic appreciation of this landmark exactly, to represent area the highest building operations level and district image significant.
5, the present invention by Cooling Tower Wall Construction precision controlling within 3mm, meet the international standard of nuclear power station cooling tower construction completely, for the research of China's inland nuclear power station ultra-large type cooling tower provides strong technical support, the appearance of internal continental nucleus power plant construction standard is significant.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is cooling tower structure schematic diagram;
Fig. 2 is the cross sectional representation of the part of Fig. 1.
In figure: 1-barrel, 2-rib, guide rail in 3-, 4-guide rail control point, 5-large form, 6-centre of cooling column point, 7-survey mark.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, 2, the often joint barrel of Cooling Tower Wall 1 forms cylindrical shape by assembled the building of large form 5, and the outer wall compartment of terrain of large form 5 junction is arranged vertically rib 2 between two, and rib 2 and large form 5 plate are built integral; The inwall of large form 5 junction is furnished with interior guide rail 3 between two, and interior guide rail 3 is fixed by screw with rib 2.
A large cooling column barrel space geometry localization method with ribbing, comprises the following steps:
(1) central point on the top end face of all interior guide rails 3 is as guide rail control point 4; Determine that the central point bottom cooling tower on ground line is centre of cooling column point 6, at the intersection point of the lateral surface of all ribs 2 often saved on barrel and the vertical center line of rib as rib central point;
(2) guide rail control point space coordinates controls: total powerstation is placed on the actual coordinate that each guide rail control point is measured at centre of cooling column point 6 place;
Go out space coordinates computed (Xn, Yn) often saving each guide rail control point on barrel again according to following formulae discovery, formula is as follows:
Xn＝X
0+(R-L)*cosα
Yn＝Y
0+(R-L)*sinα
X in above formula
0, Y
0that centre of cooling column point has coordinate,
R is the outer radius of each joint barrel,
L is the distance between guide rail control point to barrel outer wall,
α is the angle of line and coordinate X-axis between centre of cooling column point and guide rail control point;
The position of interior guide rail is adjusted according to the deviation between the actual coordinate at same guide rail control point and coordinates computed;
(3) radius at guide rail control point controls: transit is placed on centre of cooling column point 6, on ground line, launch the subpoint of rib central point according to the design angle of rib, then select at centre of cooling column and subpoint line selects the position of whole rice to be survey mark 7; Then on survey mark 7, place laser plummet, horizontal positioned laser accepts instrument on guide rail control point 4, and make laser accept instrument center line to overlap with laser plummet camera lens cross hairs, then the real radius r at guide rail control point
n=A+D, wherein A represents the distance of this survey mark to centre of cooling column point, and D represents that laser accepts the reading on instrument.
By the deviation of the design radial at the real radius recorded and this guide rail control point to adjust the radius of rib and barrel; And accordingly the upright position often saving barrel and rib is carried out adjustment reinforcing;
(4) with spirit level or plumbous bell, the upright position to rib is finely tuned; Vertical spirit level or square fixed is perpendicular to the groundly near the outer edge of rib, and fine setting rib makes the outer edge of rib parallel with spirit level or vertical.
(5) chord length Survey control: first measure the chord length Lx between the rib central point often saving the adjacent rib on barrel, go out to design chord length Ly=2 (R+h) * sin (β/2) according to formulae discovery again, wherein R-barrel outer radius, h-costal process goes out the thickness of barrel, the angle between the rib central point of β-adjacent rib and centre of cooling column point line; Finally compare the numerical bias value of Lx and Ly, and repeat above-mentioned steps (1)-(4) until deviate controls within 3mm.
Embodiment two:
The barrel of water drum cornice rib cooling tower (Shen Wan Anqing power plant second phase 2 × 1000MW unit extension project #3 cooling tower) is received and the positioning control of rib space geometry is specifically described barrel space geometry position control method of the present invention in a high position of building for the domestic seat of honour:
1, guide rail control point space coordinates controls:
(1) according to the coordinate system of power plant's setting and Survey control point (AD3:A=315.481, the B=692.084 of the #3 cooling tower periphery provided; AD4:A=315.503, B=951.064; AD5:A=146.966, B=692.479) (coordinate is: X to go out #3 centre of cooling column point with total station survey
0=721.00, Y
0=239.25);
(2) the centre of cooling column point coordinates provided according to drawing, barrel outer radius R, often save distance L between barrel absolute altitude H suitable for reading, guide rail control point to barrel outer wall, the angle α of line and coordinate X-axis between centre of cooling column point and guide rail control point, according to formula: Xn=X
0+ (R-L) * cos α, Yn=Y
0+ (R-L) * sin α, calculate the space coordinates often saving each guide rail control point on barrel, its result is as follows:
#3 Cooling Tower Wall and rib spatial coordinates calculation statistical form
(3) according to the absolute altitude provided in table and coordinate, the position of interior guide rail is adjusted at centre of cooling column point erection total powerstation.
2. use laser plummet and laser to accept instrument to measure and carry out repetition measurement to the radius at guide rail control point, the position of the interior guide rail of adjustment again, thus reach the radius adjusting rib and barrel.
3. after interior guide rail is fixing, according to interior guide rail position and wall thickness, rib (being also External compensator) is installed outside barrel, and reinforces with Screw arbor with nut at both-ends, re-use spirit level or plummet is finely tuned the upright position of rib as reference.
4. after all adjust, then verify to ensure barrel and the sterically defined zero-deviation of rib to rib space orientation by the chord length between the rib central point of measurement adjacent rib.
Angle β wherein between the rib central point of chord length design formulas Ly=2 (R+h) * (β/2), barrel outer radius R, rib thickness h, adjacent rib and centre of cooling column point line.Result is as follows:
#3 cooling tower rib center chord length Ly counting statistics table
The present embodiment reaches effective control of locating the space geometry of Cooling Tower Wall substantially by above-mentioned four steps, makes Cooling Tower Wall qualified error free, ensure that the quality of barrel supporting capacity and cooling tower.
These embodiments are not limited only to protection scope of the present invention, all modify based on basic thought of the present invention or change all belong in protection scope of the present invention.
Claims (5)
1. a large cooling column barrel space geometry localization method with ribbing, the often joint barrel of described Cooling Tower Wall forms cylindrical shape by assembled the building of large form, the outer wall compartment of terrain of large form junction is arranged vertically rib and builds integral by itself and barrel between two, it is characterized in that: comprise the following steps:
(1) centre of cooling column point, guide rail control point and rib central point is determined, wherein:
Centre of cooling column point refers to the central point bottom cooling tower on ground line;
Guide rail control point refer to select on the top end face being positioned at guide rail inside large form junction between two same position a bit;
Rib central point refers to the intersection point at the lateral surface and rib vertical center line often saving the rib on barrel;
(2) guide rail control point space coordinates controls: total powerstation is placed on the actual coordinate that each guide rail control point is measured at centre of cooling column point place;
Go out space coordinates computed (Xn, Yn) often saving each guide rail control point on barrel again according to following formulae discovery, formula is as follows:
Xn=X
0+（R-L）*cosα
Yn=Y
0+（R-L）*sinα
X in above formula
0, Y
0centre of cooling column point coordinates,
R is the inside radius of each joint barrel,
L is the distance between guide rail control point to barrel inwall,
α is the angle of line and coordinate X-axis between centre of cooling column point and guide rail control point;
The position of interior guide rail is adjusted according to the deviation between the actual coordinate at same guide rail control point and coordinates computed;
(3) radius at guide rail control point controls: the real radius measuring each guide rail control point, and the radius adjusting rib and barrel according to the deviation of the design radial at itself and this guide rail control point; And accordingly the upright position often saving barrel and rib is carried out adjustment reinforcing;
(4) with spirit level or plumbous bell, the upright position to rib is finely tuned;
(5) chord length Survey control: first measure the chord length Lx between the rib central point often saving the adjacent rib on barrel, then calculate design chord length Ly; Finally compare the numerical bias value of Lx and Ly, and repeat above-mentioned steps (1)-(4) until deviate controls within 3mm.
2. large cooling column barrel space geometry localization method with ribbing according to claim 1, is characterized in that: the measuring method of the real radius at described step (3) middle guide control point is: the line between the subpoint first formed on the ground at the rib central point often saved on barrel and centre of cooling column point chooses survey mark; Then on survey mark, place laser plummet, horizontal positioned laser accepts instrument on guide rail control point, and make laser accept instrument center line to overlap with laser plummet camera lens cross hairs, then the real radius r at guide rail control point
n=A+D, wherein A represents the distance of this survey mark to centre of cooling column point, and D represents that laser accepts the reading on instrument.
3. large cooling column barrel space geometry localization method with ribbing according to claim 2, it is characterized in that: choosing of described survey mark transit is placed on centre of cooling column point, on ground line, launch the subpoint of rib central point according to the design angle of rib, then select at centre of cooling column and subpoint line selects the position of whole rice to be survey mark.
4. large cooling column barrel space geometry localization method with ribbing according to claim 1, it is characterized in that: finely tuning with the upright position of spirit level to rib in described step (4) is by the outer edge near rib perpendicular to the ground for spirit level, the upright position of rib is finely tuned in upright position according to spirit level, makes the outer edge of rib parallel with between spirit level;
The upright position of the plumbous bell of described use to rib is finely tuned, and refer to that the vertical fixed with square is near rib template outer edge, fine setting rib makes the outer edge of rib parallel with vertical.
5. large cooling column barrel space geometry localization method with ribbing according to claim 1, is characterized in that: in described step (5), the design formulas of design chord length Ly is Ly=2(R+h) * sin (β/2),
Wherein R-barrel outer radius
H-costal process goes out the thickness of barrel
Angle between the rib central point of β-adjacent rib and centre of cooling column point line.
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| CN107860376B (en) * | 2017-11-07 | 2020-12-04 | 中国化学工程第三建设有限公司 | Measuring and positioning method for tripod of large-scale intercooling tower cone section |
| CN108763770A (en) * | 2018-05-30 | 2018-11-06 | 中国电建集团山东电力建设有限公司 | The method that double-curve cooling column barrel template merogenesis calculates is carried out using Visual LISP |
| CN109115192A (en) * | 2018-08-07 | 2019-01-01 | 重庆钢铁集团建设工程有限公司 | A kind of the center hanging scaffold and its application method of novel double-curve cooling column stack shell measurement control |
| CN109944478A (en) * | 2019-01-04 | 2019-06-28 | 中亿丰建设集团股份有限公司 | A kind of double-curve cooling column construction method |
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| FR2636718A1 (en) * | 1988-09-22 | 1990-03-23 | Electricite De France | Shell-shaped structure and method for manufacturing such a structure |
| RU2181422C2 (en) * | 1999-06-09 | 2002-04-20 | Калатузов Владимир Анатольевич | Chimney-type cooling tower |
| CN102798295A (en) * | 2012-09-07 | 2012-11-28 | 中国能源建设集团广东省电力设计研究院 | Ribbing cooling tower |
| CN102839819A (en) * | 2012-08-21 | 2012-12-26 | 中国能源建设集团广东省电力设计研究院 | Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety |
| RU136840U1 (en) * | 2013-08-20 | 2014-01-20 | Общество С Ограниченной Ответственностью "Научно-Производственное Объединение "Мостовик" | COOLING TOWER |
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2014
- 2014-08-15 CN CN201410403701.XA patent/CN104164984B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2636718A1 (en) * | 1988-09-22 | 1990-03-23 | Electricite De France | Shell-shaped structure and method for manufacturing such a structure |
| RU2181422C2 (en) * | 1999-06-09 | 2002-04-20 | Калатузов Владимир Анатольевич | Chimney-type cooling tower |
| CN102839819A (en) * | 2012-08-21 | 2012-12-26 | 中国能源建设集团广东省电力设计研究院 | Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety |
| CN102798295A (en) * | 2012-09-07 | 2012-11-28 | 中国能源建设集团广东省电力设计研究院 | Ribbing cooling tower |
| RU136840U1 (en) * | 2013-08-20 | 2014-01-20 | Общество С Ограниченной Ответственностью "Научно-Производственное Объединение "Мостовик" | COOLING TOWER |
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Denomination of invention: A Geometric Positioning Method for Ribbed Large Cooling Tower Wall Space Effective date of registration: 20231214 Granted publication date: 20160420 Pledgee: China Co. truction Bank Corp Hefei economic and Technological Development Zone Branch Pledgor: China Energy Construction Group Anhui Power Construction Second Engineering Co.,Ltd. Registration number: Y2023980071429 |
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Date of cancellation: 20231221 Granted publication date: 20160420 Pledgee: China Co. truction Bank Corp Hefei economic and Technological Development Zone Branch Pledgor: China Energy Construction Group Anhui Power Construction Second Engineering Co.,Ltd. Registration number: Y2023980071429 |
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