CN102677903A - Alignment method for center of cylinder wall in hyperbolic reinforced concrete cooling tower construction - Google Patents
Alignment method for center of cylinder wall in hyperbolic reinforced concrete cooling tower construction Download PDFInfo
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- CN102677903A CN102677903A CN2012101458450A CN201210145845A CN102677903A CN 102677903 A CN102677903 A CN 102677903A CN 2012101458450 A CN2012101458450 A CN 2012101458450A CN 201210145845 A CN201210145845 A CN 201210145845A CN 102677903 A CN102677903 A CN 102677903A
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Abstract
The invention discloses an alignment method for the center of a cylinder wall in the hyperbolic reinforced concrete cooling tower construction. The alignment method comprises the following implementation steps of: 1. manufacturing a center hanging plate; 2. installing a winder; 3. installing a pulley; 4. stringing a steel wire rope; 5. installing a plumb bob; and 6. aligning the center. The alignment method solves the problems of large diameter span and great difficulty in terms of measurement of data such as a barrel diameter and a tower height due to a high tower body in the hyperbolic reinforced concrete cooling tower construction; and due to adoption of an alignment device and a using method, the construction measurement operation process is simple, convenient and practical, the construction safety is ensured, the working efficiency and accuracy of measurement are increased, and the construction cost is reduced.
Description
Technical field
The invention belongs to the civil engineering method, especially relate to the barrel center aligning method in a kind of hyperbolic-type steel concrete cooling tower barrel construction.
Background technology
The cooling tower that the power plant adopts is generally hyperbola steel concrete cooling tower, and steel concrete barrel horizontal projection is circular, and radius generally reaches more than the 18m, and short transverse is a hyperbola, more than 75m.The construction sequence of steel concrete cooling tower barrel is: preparation of construction → measurement radius and absolute altitude → inner formword install → assembling reinforcement → exterior sheathing installs → and repetition measurement radius and absolute altitude and adjust template → concreting → form removal → maintenance.Therefore, the radius of barrel and level measurement are particularly important in construction.Along with increasing of construction height, corresponding barrel diameter is different, and with the increase of height, the centrad of barrel guarantees that difficulty strengthens simultaneously.In the stack shell construction, stack shell radius and absolute altitude are crucial, and after having only definite center accurately, measure through adopting invar tape and laser transit, and the center skew causes the deviation of diameter and absolute altitude in the time of just preventing cooling tower because of construction.
Summary of the invention
The purpose of this invention is to provide a kind of hyperbola steel concrete cooling tower construction barrel center aligning method.This method can increase along with the height of barrel construction; The horizontal scope of operation at each differing heights finds its barrel central point accurately; According to central point horizontal absolute altitude of barrel bead and radius size that needs carry out template construction are measured and controlled again, guarantee that construction meets the design drawing requirement.This method is workable, simple and practical in steel concrete hyperbola cooling tower construction, the raising construction efficiency, thereby reduces construction cost greatly.
The present invention seeks to realize like this: the outstanding dish in the center that at first designs and produces; At four winders of steel concrete hyperbola cooling tower sole plate face fixed installation; Each winder is drawn steel cable respectively; Four wire rope are connected with the outstanding dish in center after passing four (on the same horizontal plane) pulleys that are suspended in the barrel tripod system respectively, and center outstanding dish soffit central spot hangs a plummet and guarantees consistent all the time with the center, ground.In the barrel construction; Radius measurement before the mounting template is that the center with the outstanding dish in center is a reference point, and this outstanding dish raises and raises synchronously with the barrel construction height, and will regulate outstanding disk center all the time and column foot plinth center is consistent; Re-use laser transit and invar tape and measure absolute altitude and radius; It is easy and simple to handle to make it both satisfy survey crew, guarantees the correctness of the diameter data of double-curve cooling column again, accurately measures the absolute altitude of tower tube simultaneously; This device is not only simple and practical, and satisfies certainty of measurement requirement and construction safety.
The implementation step of barrel center aligning method is in the hyperbola steel concrete cooling tower construction:
1) the outstanding dish in making center:
Diagram 1 is a center of the present invention outstanding dish structural representation, and outstanding dish is the laser pickoff when measuring absolute altitude both, is again simultaneously to serve as the center centering reference point of measuring barrel dliameter.The disk (12) of outstanding dish for being processed into steel plate, a disk lower flat central point welding screw rod suspension hook (15) is used to hang plummet; A disk upper plane central point welding buckle screw rod (14) is used for fixing invar tape end starting point; Invar tape be used to the to construct radius measurement of formwork; Apart from outstanding plate edge and be mutually 90 ° and bore four circular holes (13), be respectively applied for and connect the wire rope of hanging outstanding dish usefulness that fixing corresponding four winders are drawn, so that sling the plummet of disk below.
2) winder is installed
With cooling tower sole plate face central point is benchmark; According to being mutually 90 ° and install and fix a little with the equidistant winder that is provided with of central point; Get apart from size and to be slightly less than cooling Tata tube least radius; Winder employing expansion bolt and sole plate are fixed, and four wire rope are regulated by corresponding winding roll respectively.
3) pulley is installed
On the same horizontal plane of treating to construct of cooling tower barrel, according to be mutually 90 ° and with column foot plinth base plate on the winder opposite position pulley is fixed on the second layer tripod horizon bar that the barrel working measure uses (three layers of tripod systems) totally.Two corresponding on two pulleys of opposite face and sole plate winders should remain on the same vertical plane, and are mutually 90 ° with vertical plane that another group (two pulleys and two winders) is formed.
4) reeve
Draw after the steel wire penetrating correspondence is fixed on the pulley on the barrel tripod from winder respectively, be connected to a fixed with four holes on the outstanding dish in center, it is firm to require to connect.
5) plummet is installed
The wire rope of four winders is tightened, and the outstanding dish in maintenance center is the level of state, and connects plummet with wire one end, and the other end connects on the hook of target lower central position, center.The length of wire is got the overall height that is slightly larger than cooling tower, in the work progress, the wire pitch of the laps of unnecessary length is hung on the plummet end.
6) center centering
Fig. 1 is the implementation method sketch map that adopts hyperbolic-type steel concrete cooling tower construction barrel center alignment device.When hyperbola steel concrete cooling tower barrel is constructed; Four winders (6) and four of adjustings through being provided with on cooling tower sole plate (5) face are fixed on the outstanding wire rope (2) that coil (12) of pulleys (4) adjusting centre of pulls on the barrel (10); So that outstanding dish in adjustment center and the distance of barrel on four direction make the outstanding dish in center go up plummet 7 and ground center reference point position consistency by wire 8 suspensions.After the accurate centering of vertical, outstanding disk center absolute altitude is shown by laser range finder 9; Be welded with the fixedly buckle rotating shaft of invar tape above utilizing outstanding dish, measure in different directions steel ruler 11 around barrel, with a control reinforcing bar binding radius and a mode radius with four.
In construction, along with the rising of barrel, tripod 3 systems and pulley 4 also progressively raise, and four wire rope of the outstanding dish 1 of centre of pull lengthen through regulating the payoff reel cartridge thereupon, and the outstanding dish in center also progressively raises.The every risings one joint construction of barrel 10, the center is outstanding coils thereupon centering once, as long as the plummet that the outstanding dish in center is gone up vertical hanging remains on the center, the cooling tower center is fully guaranteed so, has just guaranteed the accuracy of barrel dliameter and tower height DATA REASONING simultaneously.
Steel concrete hyperbola cooling tower barrel proposed by the invention construction center alignment device has solved that the diameter span is big in the construction of steel concrete hyperbola cooling tower barrel, stack shell is high and has made the big problems of DATA REASONING difficulty such as barrel dliameter and tower height.Through using this alignment device, make construction survey work simple and practical, not only guarantee the safety of construction, and improved surveying work efficient and accuracy, reduced construction cost.Combine accompanying drawing and instance that device and the implementation method that the present invention proposes is described further at present.
Description of drawings
Fig. 1: hyperbola steel concrete cooling tower construction barrel of the present invention center aligning method is implemented view.
Fig. 2: center of the present invention outstanding dish structural representation.
Among Fig. 1: 1, the outstanding dish in center; 2, the wire rope of the outstanding dish of fixed center; 3, tripod system; 4, pulley; 5, sole plate; 6, winder; 7, plummet; 8, wire; 9, laser transit; 10, barrel; 11, invar tape.
Among Fig. 2: 12, disk; 13, circular hole; 14, buckle screw rod; 15, screw rod suspension hook.
The specific embodiment
Fig. 2 is apparatus of the present invention center outstanding dish construction drawing, mainly comprise center outstanding dish plectane, wire fixing hole, fixedly invar tape end buckle screw rod, hang the suspension hook of plummet.The disk (12) of outstanding dish for being processed into δ=14mm steel plate, diameter is 200mm; A disk lower flat central point welding φ 12mm screw rod suspension hook (15) is used to hang plummet; A disk upper plane central point welding φ 12mm buckle screw rod (14) is used for fixing invar tape end starting point; Invar tape be used to the to construct radius measurement of formwork; Apart from outstanding plate edge 5mm and be mutually 90 ° and bore four circular holes (13) that diameter is φ 10mm, be respectively applied for and connect the wire rope of hanging outstanding dish usefulness that fixing corresponding four winders are drawn, so that sling the plummet of disk below.
Fig. 1 is that the inventive method is implemented characteristic: press the outstanding dish 1 in Fig. 1 making center; The fixing respectively four ф 8mm wire rope 2 in four holes of boring on its center target; Wire is wrapped on the winder 6 on the sole plate 5 after passing the pulley 4 that is fixed in the tripod system 3; Four winders on the sole plate 5 are according to being mutually 90 ° and equidistant fixing with central point, and four wire rope 2 degrees of tightness are regulated by winder 6.Center outstanding dish 1 bottom suspension hook bolt one steel wire plummet 7.During the check and correction central point; Through rotating four winders 6 and four pulleys 4 regulating on the barrel, regulate the length of the wire rope 2 of the outstanding dish of traction, so that outstanding dish in adjustment center and the distance of barrel on four direction; The plummet that makes the outstanding dish in center go up suspension is consistent with the center, ground, accurately centering.Be welded with the fixedly rotating shaft bolt of invar tape above the outstanding dish, invar tape 11 can sway, and is convenient to measure around barrel, with a control reinforcing bar binding radius and a mode radius; The center absolute altitude is measured through the outstanding dish in center by laser transit 9.Along with the increase of barrel construction height, regulate again with the wire of suspension plummet neutralization is measured through regulating four winders wire rope that lengthens simultaneously.
Case study on implementation: the present invention successfully applies to 2 2000 ㎡ cooling towers of the thermoelectric first stage of the project in Laigang, Shandong, 1 5500 ㎡ cooling tower of gas-steam combined circulating generation engineering and 1 2500 ㎡ cooling tower of thermoelectric the second stage of the project.Adopt this cooling tower construction barrel center aligning method and device in the construction, measuring operation is simple and practical, fully guarantees construction quality, improves construction efficiency, reduces construction cost.
Claims (3)
1. the barrel center aligning method during a hyperbolic-type steel concrete cooling tower barrel is constructed, implementation step is following:
1) the outstanding dish in making center:
The outstanding laser pickoff that coiled when both absolute altitude had been measured in conduct in center is again simultaneously to serve as the center centering reference point of measuring barrel dliameter; The disk (12) of outstanding dish for being processed into steel plate, a disk lower flat central point welding screw rod suspension hook (15) is used to hang plummet; A disk upper plane central point welding buckle screw rod (14) is used for fixing invar tape end starting point; Invar tape be used to the to construct radius measurement of formwork; Apart from outstanding plate edge and be mutually 90 ° and bore four circular holes (13), be respectively applied for and connect the wire rope of hanging outstanding dish usefulness that fixing corresponding four winders are drawn, so that sling the plummet of disk below;
2) winder is installed
With cooling tower sole plate face central point is benchmark; According to being mutually 90 ° and install and fix a little with the equidistant winder that is provided with of central point; Get apart from size and to be slightly less than cooling Tata tube least radius; Winder employing expansion bolt and sole plate are fixed, and four wire rope are regulated by corresponding winding roll respectively;
3) pulley is installed
On the same horizontal plane of treating to construct of cooling tower barrel, according to be mutually 90 ° and with column foot plinth base plate on the winder opposite position pulley is fixed on the second layer tripod horizon bar that the barrel working measure uses (three layers of tripod systems) totally; Two corresponding on two pulleys of opposite face and sole plate winders should remain on the same vertical plane, and are mutually 90 ° with vertical plane that another group (two pulleys and two winders) is formed;
4) reeve
Draw after the steel wire penetrating correspondence is fixed on the pulley on the barrel tripod from winder respectively, be connected to a fixed with four holes on the outstanding dish in center, it is firm to require to connect;
5) plummet is installed
The wire rope of four winders is tightened, and the outstanding dish in maintenance center is the level of state, and connects plummet with wire one end, and the other end connects on the hook of target lower central position, center; The length of wire is got the overall height that is slightly larger than cooling tower;
6) center centering
When hyperbola steel concrete cooling tower barrel is constructed; Four winders (6) and four of adjustings through being provided with on cooling tower sole plate (5) face are fixed on the outstanding wire rope (2) that coil (12) of pulleys (4) adjusting centre of pulls on the barrel (10); So that outstanding dish in adjustment center and the distance of barrel on four direction; Make the outstanding dish in center go up plummet 7 and ground center reference point position consistency by wire 8 suspensions; After the accurate centering of vertical, outstanding disk center absolute altitude is shown by laser range finder 9; Be welded with the fixedly buckle rotating shaft of invar tape above utilizing outstanding dish, measure in different directions steel ruler 11 around barrel, with a control reinforcing bar binding radius and a mode radius with four.
2. according to the barrel center aligning method in claims 1 said hyperbolic-type steel concrete cooling tower barrel construction, it is characterized in that the disk of outstanding dish for being processed into δ=14mm steel plate, diameter is 200mm; φ 12mm screw rod suspension hook of disk lower flat central point welding; The φ 12mm screw rod of a buckle of disk upper plane central point welding; Boring four circular holes that diameter is φ 10mm apart from hanging plate edge 5mm place and being mutually 90 °.
3. according to the barrel center aligning method in claims 1 said hyperbolic-type steel concrete cooling tower barrel construction, it is characterized in that coming the outstanding dish in adjusting center to carry out the center centering through four winders and four pulleys.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217149A (en) * | 2013-03-11 | 2013-07-24 | 浙江省建工集团有限责任公司 | Hyperbola reinforced concrete cooling tower cylinder wall construction and measurement method |
| CN103255918A (en) * | 2013-05-29 | 2013-08-21 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN105257032A (en) * | 2015-09-24 | 2016-01-20 | 中国能源建设集团广东省电力设计研究院有限公司 | Large floor type cooling tower with main barrel and steel structures |
| CN108560937A (en) * | 2018-05-04 | 2018-09-21 | 河南省第二建筑工程发展有限公司 | A kind of Cooling Tower Wall Construction improves the small tool of hyperbola control accuracy |
| CN108871151A (en) * | 2018-08-15 | 2018-11-23 | 中国电建集团贵州电力设计研究院有限公司 | A kind of measuring device and its application method for cooling tower tower radius |
| 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 |
| CN109514250A (en) * | 2018-12-18 | 2019-03-26 | 中化二建集团有限公司 | Storage tank net shell promotes centralized positioning and anti-deformation device, construction method |
| CN109707571A (en) * | 2018-12-07 | 2019-05-03 | 山东中车风电有限公司 | Wind turbines hyperbolic-type tower design method and tower based on frequency control |
| CN110984642A (en) * | 2019-12-19 | 2020-04-10 | 中建六局土木工程有限公司 | Construction method for large-diameter hyperbolic cooling tower cylinder wall |
| CN114087945A (en) * | 2021-11-12 | 2022-02-25 | 中国华冶科工集团有限公司 | Hyperbolic funnel measuring device and measuring method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217149B (en) * | 2013-03-11 | 2016-02-24 | 浙江省建工集团有限责任公司 | A kind of hyperbolic steel reinforced concrete Cooling Tower Wall Construction measuring method |
| CN103217149A (en) * | 2013-03-11 | 2013-07-24 | 浙江省建工集团有限责任公司 | Hyperbola reinforced concrete cooling tower cylinder wall construction and measurement method |
| CN103255918A (en) * | 2013-05-29 | 2013-08-21 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN103255918B (en) * | 2013-05-29 | 2015-05-20 | 江苏省华建建设股份有限公司 | Concrete double-curved-surface thin shell cylinder construction method |
| CN105257032A (en) * | 2015-09-24 | 2016-01-20 | 中国能源建设集团广东省电力设计研究院有限公司 | Large floor type cooling tower with main barrel and steel structures |
| CN108560937A (en) * | 2018-05-04 | 2018-09-21 | 河南省第二建筑工程发展有限公司 | A kind of Cooling Tower Wall Construction improves the small tool of hyperbola control accuracy |
| 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 |
| CN108871151A (en) * | 2018-08-15 | 2018-11-23 | 中国电建集团贵州电力设计研究院有限公司 | A kind of measuring device and its application method for cooling tower tower radius |
| CN109707571A (en) * | 2018-12-07 | 2019-05-03 | 山东中车风电有限公司 | Wind turbines hyperbolic-type tower design method and tower based on frequency control |
| CN109514250A (en) * | 2018-12-18 | 2019-03-26 | 中化二建集团有限公司 | Storage tank net shell promotes centralized positioning and anti-deformation device, construction method |
| CN110984642A (en) * | 2019-12-19 | 2020-04-10 | 中建六局土木工程有限公司 | Construction method for large-diameter hyperbolic cooling tower cylinder wall |
| CN114087945A (en) * | 2021-11-12 | 2022-02-25 | 中国华冶科工集团有限公司 | Hyperbolic funnel measuring device and measuring method thereof |
| CN114087945B (en) * | 2021-11-12 | 2023-07-28 | 中国华冶科工集团有限公司 | Hyperbolic funnel measuring device and measuring method thereof |
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Application publication date: 20120919 |