CN102359302A - Extra-high voltage large-span iron tower assembling method - Google Patents
Extra-high voltage large-span iron tower assembling method Download PDFInfo
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Abstract
The invention discloses an extra-high voltage large-span iron tower assembling method, which belongs to the technical field of electric transmission and transformation electric power circuit construction processes. The method comprises the following steps of: 1, arranging a construction site, namely arranging a ground anchor, performing pole foundation construction, and arranging main material single pieces and tower sheets of an assembled iron tower body on the ground; 2, assembling a pole, mounting a hoisting system, and hoisting iron tower legs, wherein the assembled pole is a spinning self-elevating ground pole which is provided with horizontal double arms and a hydraulic downward jacking stock; 3, lifting the pole, hoisting the iron tower body section by section, and finally hoisting iron tower cross arms one by one in a segmentation mode; and 4, mounting iron tower accessories, disassembling the pole, and finally overhauling and self-checking to finish the construction. The method has the advantages of reducing the working amount of aloft operation, along with a short construction period, a small number of hoisting times and high safety; by the method, safety risks are reduced, required aloft operation personnel is greatly reduced, and labor cost is reduced; and the method has extremely good economic and social benefits.
Description
Technical field
The present invention relates to power transmission and transformation power line construction technology, relate in particular to a kind of extra-high voltage large crossing tower method for assembling.
Background technology
The research of the upright technology of extra-high voltage iron tower group is rarely found in the prior art, because extra-high voltage large crossing tower scantling is big, lift heavy is big, it is difficult to install, difficulty has the reference part in the prior art; The difficult point of its construction is; Very inconvenience is installed and removed to the arm of pole, and hoisting weight is big, need large-scale hoist engine carry out amplitude modulation to rocking arm, so that tower spare installation in position; And lifting often, amount of high-altitude operation is big, dangerous, and the stability of Lift-on/Lift-off System is difficult to guarantee.
Summary of the invention
The objective of the invention is to solve the problem that exists in the above-mentioned background technology; That the arm that proposes a kind of pole is installed and removed is very convenient, the lifting number of times is few in the integral construction, amount of high-altitude operation is few, the extra-high voltage large crossing tower method for assembling that Lift-on/Lift-off System is stable, efficiency of construction is high.
For realizing above-mentioned purpose, the technical scheme of the present invention's design is following:
Extra-high voltage large crossing tower method for assembling comprises following steps:
1., arrange the job site: arrange earth anchor and carry out the pole foundation construction, arrange trailer system and aerodynamic field, iron tower hanging piece control rope, monitoring system, power supply, crane are set, place main material single-piece, the tower sheet of assembling iron tower body of the tower on ground;
2., the upright pole of group, tackling system is installed, lifting iron tower tower leg, institute organize upright pole be with the spin of jacking stock under horizontal both arms and the hydraulic pressure from liter a pole;
3., promote pole, and lift the iron tower body of the tower piecemeal, last segmentation lifts the iron tower cross-arm piecewise;
4., the iron tower annex is installed, remove pole, overhaul at last and self check, accomplish construction.
In technique scheme, step 1. in, the on-the-spot earth anchor of arranging adopts the Cast-in-place concrete mode, earth anchor and iron tower foundation construction are constructed synchronously; And on the basis, bury the earth anchor draw ring underground.
In technique scheme, said trailer system is included in the steering that is provided with on the pole base, disposes deflecting roller on the steering.
In technique scheme, step 2. in, the upright pole concrete grammar of group is; Form the pole shaft through crane lifting pole base, standard knot; Simultaneously the hydraulic lifting stock is lifted on the standard knot outside, bottom,, utilizes hydraulic lifting stock top pole to connect standard knot then then with crane lifting iron tower tower leg; The both sides of lifting pole top standard knot and pole are put down arm, pull bar are installed on the pole top, utilize pull bar that the flat arm in both sides is remained on horizontal level.
In technique scheme, the flat arm concrete grammar of lifting pole is that elder generation will put down arm on ground and be assembled into integral body, with crane it hung the flat arm installation site of pole at a slow speed again.
In technique scheme, the 2. middle tackling system of installing of step comprises hoist engine, dolly, suspension hook, plays Hanging roller, hoisting wirerope.
In technique scheme; The 3. middle lifting body of the tower of step concrete grammar is the body of the tower of balance lifting simultaneously master material assembly on the flat arm in the both sides of pole, liftoff synchronously, synchronous lifting, in place synchronously; After the installation of body of the tower master material; With the flat arm half-twist of pole, oblique material and the horizontal material of lifting body of the tower are also installed fastening oblique material and horizontal material, progressively upwards lift the lifting work up to the whole body of the tower of completion of oblique material and the horizontal material of body of the tower by this step.
The upright extra-high voltage common line iron tower of the backguy pole group tower process group of landing outside the present invention's employing center suspends; Develop two flat arm spins voluntarily from rising seat ground pole; And configuration hydraulic lifting; The both sides boom adopts two hinges on base to be connected with the pole shaft, guarantees that boom can be approximately perpendicular folding up and down, therefore has arm and installs and remove advantage easily; Simultaneously, arm is fully with reference to the principle design of tower crane and to have a hoisting weight by the processing of professional tower crane factory big, and the lifting number of times is few, reduces work high above the ground work amount, the advantage that safety is good; Iron tower body of the tower and tower leg all adopt both arms liftings, and the both sides arm is balance each other, but also bilateral arm balance lift heavy simultaneously; The stability and the efficiency of construction that have increased Lift-on/Lift-off System greatly are in work progress; Be equipped with advanced monitoring system, control system entirely install data show, report to the police, control, function such as protection, the lifting of pole, lifting, revolution, etc. all adopt video monitoring and centralized operation control; The whole process of constructing is carried out special messenger's monitoring, safe and reliable.
The present invention has satisfied the requirement of standardized construction fully; Can be used for instructing the upright standardized construction of extra-high voltage large crossing tower group; For the construction of extra-high voltage experiment and demonstration engineering safety, raising work efficiency, realization environmental objective provide technical support, also for using construction of the same type to have great reference value and directive significance in domestic other extra-high voltage project from now on.
Description of drawings
Fig. 1 is the overall construction flow chart of the present invention;
Fig. 2 rises a seat ground pole sketch map certainly for the two flat arm spin of using in the work progress of the present invention;
Among the figure, 1, cast-in fixing bolt; 2, pole basis; 3, pole mobile jib; 4, waist hoop; 5, pivoting support; 6, boom; 7, coaster; 8, suspension hook; 9, strut; 10, pull bar; 11, luffing hoist engine; 12, pull rope; 13, deflecting roller; 14, hoist engine; 15, iron tower; 16, hydraulic lifting stock.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
Consult shown in Figure 1, extra-high voltage large crossing tower method for assembling, it comprises following steps:
1., arrange the job site: arrange the job site: arrange earth anchor and carry out the pole foundation construction; Arrange trailer system and aerodynamic field; Iron tower hanging piece control rope, monitoring system, power supply, crane are set, place main material single-piece, the tower sheet of assembling iron tower body of the tower on ground; Carry out the basis simultaneously and recheck, Work tool test, formulation job instruction, technical security are told somebody what one's real intentions are, the preparation that levelling of the land, pavement recondition, transport of materials, construction temporory structure are provided with;
2., the upright pole of group, tackling system is installed, lifting iron tower tower leg, institute organize upright pole be with the spin of jacking stock under horizontal both arms and the hydraulic pressure from liter a pole;
3., promote pole, and lift the iron tower body of the tower piecemeal, last segmentation lifts the iron tower cross-arm piecewise;
4., the iron tower annex is installed, remove pole, overhaul at last and self check, accomplish construction.
Specific embodiment
On the 1000kV extra-high voltage proving ground concrete technical scheme of the present invention is explained in the test of the upright technology of extra-high voltage iron tower group.
1, arranges the job site
Arrange earth anchor: the on-the-spot earth anchor of arranging adopts the Cast-in-place concrete mode, and earth anchor and iron tower foundation construction are constructed synchronously; And on the basis, bury the earth anchor draw ring underground, convenient group tower is constructed.
Arrange trailer system: concentrated steering is set on the pole base.Pull rope, accent arm rope are through concentrating steering steering power field.Aerodynamic field is taked to concentrate and is kept watch on electric control operation, accurately with synchronously, realizes safety interlocking with safety action, prevents maloperation.
The pole system is set:
A, pole backguy: pole basis and pole Synchronization Design, backguy need be set when generally lifting, lean on the basis to carry moment of flexure and uncompensated load.In can adopting backguy at the diagonal angle (main material) direction arrange, to improve pole stability;
B, pole waist hoop: along with the progress, the pole that lift constantly raise, for the pressure that guarantees pole is stable, must to pole multilayer waist hoop be set according to hoisting height, waist hoop spacing is less than or equal to 30 meters, and in iron tower respective nodes position waist hoop linkage is set;
C, lifting direction pre-set: flat arm goes to the diagonal of iron tower when hanging main material, equals the lateral arrangement that arm goes to circuit when erection tower body first half tower sheet and cross-arm;
The apparatus arrangement of other outfits:
A, for ease of seeing lifting situation on the tower clearly, improve safety, iron tower hanging piece control rope earth anchor is provided with four groups of traction power consoles respectively in diagonal, apart from 100m place, tower center, is mainly used in tower leg portion and lifts main material; Four groups of traction power consoles being set respectively,, be mainly used in the lifting control that members such as sheet and cross-arm are hung on body of the tower top apart from 200m place, tower center along line and horizontal line road direction.
Job schedule plans such as lifting and assembling, haul should be listed in b, scene, carry out to guarantee lifting everything goes well with your work;
Traction powers such as c, outfit hoist engine, and employing is concentrated automatically controlled, special messenger's operation, special messenger's monitoring;
D, center command set are provided with TV monitor system and radio communication system, and the operation of key position is monitored, commanded;
Totally 7 in the hoist engines of e, the on-the-spot size of configuration difference altogether of crossover tower, TV monitoring system 1 cover and auxiliary equipment etc. are provided with enough and reliable supply power supply;
F, outfit 160kN crane auxiliary construction instrument are used for the assembling of tower sheet and adopt, and establish special messenger commander and monitoring.
2, the upright pole of group, installation tackling system, lifting iron tower tower leg
The upright pole of group rises seat ground pole certainly for the spin of being with both arms and hydraulic lifting stock, and concrete structure is consulted shown in Figure 2:
Cast on the stage cast-in fixing bolt 1 cast-in-place crab-bolt formula basis on the basis as pole pedestal 2.
On pole basis 2, be installed with pole mobile jib 3 up; The bottom of pole mobile jib 3 is set with hydraulic lifting stock 16; Be arranged at intervals with multilayer waist hoop 4 on the pole mobile jib 3, the top of pole mobile jib 3 is installed with the pivoting support 5 with pole mobile jib 3 concentrics, and the top of pivoting support 5 is installed with two identical booms 6 that are positioned on the same horizon; On two booms 6 coaster 7 is installed respectively; All be hung with suspension hook 8 on the coaster 7, the top of pivoting support 5 is installed with strut 9, and the top bilateral symmetry of strut 9 is fixed with many pull bars 10; The end of many pull bars 10 is separately fixed on two booms 6; A luffing hoist engine 11 respectively is installed on two booms 6, and luffing hoist engine 11 all is connected with 12, two pull ropes 12 of pull rope and is connected with hoist engine 14 through the deflecting roller 13 that is installed in pole mobile jib 3 two bottom sides respectively.
Be safety of construction, the spacing in the multilayer waist hoop 4 between adjacent two waist hoops 4 is less than or equal to 30 meters, and lead-out wire on the waist hoop 4 is connected to iron tower 15 respective nodes positions, and the length of boom 6 is greater than 22 meters.
The upright pole concrete grammar of group is; Form the pole mobile jib through crane lifting pole standard knot; Simultaneously the hydraulic lifting stock is lifted on the standard knot outside, bottom, then, utilizes hydraulic lifting stock top pole to connect standard knot then with the hypomere of crane lifting iron tower tower leg; The both sides of lifting pole top standard knot and pole are put down arm, pull bar are installed on the pole top, utilize pull bar that the flat arm in both sides is remained on horizontal level.
Crane lifting pole and tower leg hypomere: utilize crane lifting tower leg hypomere earlier, the crane position begins lifting after fixing according to the needs displacement of hanging piece again.The lifting swivel is with lower part of the body portion plurality of sections and pole jacking frame earlier during the crane lifting pole, and it is fixing that pole bottom and jacking frame are installed on the pole basis, and then lifting pole top, makes it possess the condition of own jacking.
The flat arm lifting of pole: movable ear seat, inner arm, middle arm, outer arm are assembled into one on ground.The latch nut inwardly, inside and outside arm will carry out correct pairing according to the paint mark on the arm.
Perhaps, utilize the ear of embracing on the pole cap to pull the hole, pulley is installed, the lifting arm.Movable ear seat is docked with being connected joint, and used bolt is 8.8 grades, and left and right sides arm can not exchange
Pull upright arm, with the control rope arm is outwards pulled out earlier, pull stressed arm is slowly pulled of upright wire rope then and found horizontal level.
Three yoke plates, pull bar and transition arm-tie are installed, and transition arm-tie two ends use latch φ 50 * 140, and all the other connect uses latch φ 50 * 80.Transition arm-tie length is different, and its color of paint must be identical with corresponding tie point color of paint.Hoist engine, dolly, chain, suspension hook are installed then, are played annexes such as Hanging roller, hoisting wirerope.Opposite side arm the same manner is installed.
3, promote pole, place main material single-piece, the tower sheet of assembling iron tower body of the tower on ground, and by the upright body of the tower of part lifting group, the lifting iron tower is cranked arm
Rise pole: after adopting partly hypomere of the intact tower leg of crane lifting and pole system, utilize hydraulic lifting stock top pole, the tipping standard knot is till pole allows free height to satisfy next section of lifting tower sheet.
The body of the tower lifting: adopt bilateral equilibration lifting or one-sided lifting, make liftoff synchronously, the synchronous lifting of hanging piece, in place synchronously, reduce the unbalanced moment that pole bears, the unbalanced moment of pole must be controlled in the 750kNm.In the lifting operation process, take the measure of dodging in advance, prevent the pole backguy and hung that member is in place to have an interference, must not in lifting, adjust the waist hoop.
Lifting operation takes main material single-piece to decompose lifting or the erection tower sheet mode depends on each iron leg tower weight amount, allows at pole under the prerequisite of lift heavy, will adopt tower sheet lifting mode.Behind the tower sheet installation in position, with the flat arm half-twist of pole, the lifting tower body is the oblique material and the horizontal material of two sides in addition.Treat tower body four skew back materials and horizontal material installs and bolton after the hoisting sling of can loosening.
By above-mentioned lifting mode, progressively upwards lifting partly lifts completion until body of the tower.
The lifting of cranking arm: supporting capacity and site condition according to pole confirm to adopt the upper and lower split Hoisting Program of cranking arm.Can adopt both sides crank arm balance lifting or one-sided lifting mode according to the construction plant.
2 liftings are adopted in the lower bent lever lifting, and during lifting, the angle of inclination of cranking arm conforms to installation back angle basically, so that the installation of cranking arm; After all bolts are all installed, removed hanging pulley.
On crank arm that lifting is same adopts 2 liftings, the lifting angle should be adjusted so that installation in place.Both sides crank arm that lifting is accomplished and fastening bolt after, add wire rope in the front and back suitable for reading side of cranking arm and regulate with the double hook turnbuckle and tighten up, and the bolt hole distance suitable for reading of cranking arm on measuring, confirm its with the cross-arm respective bolt holes apart from whether conforming to.
4, segmentation lifts the iron tower cross-arm piecewise, and the iron tower annex is installed, and removes pole, overhauls at last and self check, accomplishes construction
Cross-arm lifting: integral hoisting dual-side cross-arm and ground line bracket, lifting cross-arm middle part.Earlier the flat arm of pole is gone to along line direction, do not overlap when flat arm underspin is removed, take the opposite sequence of pole system assembles to remove then with cross-arm.
The present invention's pole that adopts of constructing is all-hydraulic lifting, and lifting effective operation radius is 2.4～22 meters, and the suspension centre adjustment is identical with tower crane, the lifting of pole, lifting, revolution, etc. all adopt video monitoring and centralized operation to control.The pole system adopts advanced equipment in a large number, and the safety device that tower crane possesses is all joined in this pole system entirely, comprising: snubber; Hoisting weight restriction/indicator; Dolly amplitude restriction/indicator, lifting altitude restriction/indicator, angle of revolution restriction/indicator; Hoisting moment restriction/indicator, hoisting moment difference control/indicator; Anemobiagraph, lightning protection earthing, red barrier lamp; Suspension hook and reel are prevented rope releaser, amplitude variation trolley off-axis anti-drop device; Safety control system install data show, report to the police, control, function such as protection.Four angular direction that pivoting support is following are provided with four and draw ear, be used to be provided with connect in backguy, interior backguy angle over the ground is 45 °, to improve the stability of pole when the various operating mode.The whole construction course security monitoring, construction safety is reliable.
The content that this manual is not done to describe in detail belongs to the known prior art of this area professional and technical personnel.
Claims (7)
1. extra-high voltage large crossing tower method for assembling is characterized in that comprising following steps:
1., arrange the job site: arrange earth anchor and carry out the pole foundation construction, arrange trailer system and aerodynamic field, iron tower hanging piece control rope, monitoring system, power supply, crane are set, place main material single-piece, the tower sheet of assembling iron tower body of the tower on ground;
2., the upright pole of group, tackling system is installed, lifting iron tower tower leg, institute organize upright pole be with the spin of jacking stock under horizontal both arms and the hydraulic pressure from liter a pole;
3., promote pole, and lift the iron tower body of the tower piecemeal, last segmentation lifts the iron tower cross-arm piecewise;
4., the iron tower annex is installed, remove pole, overhaul at last and self check, accomplish construction.
2. extra-high voltage large crossing tower method for assembling according to claim 1 is characterized in that, step 1. in, the on-the-spot earth anchor of arranging adopts the Cast-in-place concrete mode, earth anchor and iron tower foundation construction are constructed synchronously; And on the basis, bury the earth anchor draw ring underground.
3. extra-high voltage large crossing tower method for assembling according to claim 1 and 2 is characterized in that, said trailer system is included in the platform that turns to of ground, iron tower center setting, turns to the pull rope and the deflecting roller of configuration steering power field usefulness on the platform.
4. extra-high voltage large crossing tower method for assembling according to claim 1; It is characterized in that, step 2. in, the upright pole concrete grammar of group is; Form the pole shaft through crane lifting pole base, standard knot; Simultaneously the hydraulic lifting stock is lifted on the standard knot outside, bottom,, utilizes hydraulic lifting stock top pole to connect standard knot then then with crane lifting iron tower tower leg; The both sides of lifting pole top standard knot and pole are put down arm, pull bar are installed on the pole top, utilize pull bar that the flat arm in both sides is remained on horizontal level.
5. extra-high voltage large crossing tower method for assembling according to claim 4 is characterized in that, the flat arm concrete grammar of lifting pole is that elder generation will put down arm on ground and be assembled into integral body, with crane it hung the flat arm installation site of pole at a slow speed again.
6. extra-high voltage large crossing tower method for assembling according to claim 1 is characterized in that, the 2. middle tackling system of installing of step comprises hoist engine, dolly, suspension hook, plays Hanging roller, hoisting wirerope.
7. extra-high voltage large crossing tower method for assembling according to claim 1; It is characterized in that; The 3. middle lifting body of the tower of step concrete grammar is the body of the tower of balance lifting simultaneously master material assembly on the flat arm in the both sides of pole, liftoff synchronously, synchronous lifting, in place synchronously; After the installation of body of the tower master material; With the flat arm half-twist of pole, oblique material and the horizontal material of lifting body of the tower are also installed fastening oblique material and horizontal material, progressively upwards lift the lifting work up to the whole body of the tower of completion of oblique material and the horizontal material of body of the tower by this step.
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| CN103924826A (en) * | 2013-01-10 | 2014-07-16 | 张启富 | Telescopic serial holding pole lifting telescopic arm |
| CN104192469A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Electric tower sliding and conveying device and application method thereof |
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| CN103924816A (en) * | 2014-04-16 | 2014-07-16 | 山东送变电工程公司 | Installation method for cup type iron tower of ultra-high voltage transmission line |
| CN104192469A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Electric tower sliding and conveying device and application method thereof |
| CN104192469B (en) * | 2014-08-29 | 2016-07-06 | 国家电网公司 | A kind of electricity tower sliding conveying arrangement and using method thereof |
| CN104594696B (en) * | 2014-12-19 | 2016-11-02 | 国家电网公司 | Double embrace bar group is utilized to found 1000kV tangent suspension tower construction method |
| CN104594696A (en) * | 2014-12-19 | 2015-05-06 | 国家电网公司 | Construction method for assembling 1000 kV tangent suspension tower through double holding poles |
| CN104878977A (en) * | 2015-06-09 | 2015-09-02 | 广西建工集团第五建筑工程有限责任公司 | Modular structure assembling construction method for super-high-rise building decoration tower |
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| CN107143198A (en) * | 2017-05-24 | 2017-09-08 | 常熟风范电力设备股份有限公司 | A kind of method for founding UHV transmission steel tower suitable for the severe location group in mountain area |
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| CN102359302B (en) | 2013-10-09 |
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