CN104594631A - Construction process for constructing prilling tower spraying layer by slide mold device dragging construction platform - Google Patents
Construction process for constructing prilling tower spraying layer by slide mold device dragging construction platform Download PDFInfo
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- CN104594631A CN104594631A CN201510058991.3A CN201510058991A CN104594631A CN 104594631 A CN104594631 A CN 104594631A CN 201510058991 A CN201510058991 A CN 201510058991A CN 104594631 A CN104594631 A CN 104594631A
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Abstract
The invention provides a construction process for constructing a prilling tower spraying layer by a slide mold device dragging a construction platform. The construction process solves the problem of construction difficulty of a prilling tower spraying layer. According to the method, a slide mold device for tube wall construction of a prilling tower is used for carrying the construction platform to realize the synchronous sliding ascending, after the construction platform slides and ascends to a position under the prilling tower spraying layer, the construction platform is disengaged from the slide mold device for constructing the tube wall of the prilling tower spraying layer, in addition, the construction platform is fixed to a corbel pre-buried in the tube wall, then, the slide mold device of the tube wall continuously and upwards slides and ascends for completing the construction of the tube wall, after the tube wall construction is completed, the construction platform is used, and in addition, a tower crane is matched for vertically conveying and constructing the spraying layer. When being used for constructing the prilling tower spraying layer, the method has the advantages that the construction is simple and convenient, a great amount of turnover materials are saved, the use of a large-scale crane and a large-scale hoisting machine is avoided, the cost is reduced, the economic benefits are good, and the operation platform is adopted, so that the high-altitude construction safety is well ensured. The method also obtains a good effect in practical application, and in addition, the method wins good reputation from owners.
Description
Technical field
The present invention relates to a kind of new granulation tower spraying layer construction technology, specifically a kind of construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer.
Background technology
In recent years, due to the high speed development of China's economic, large to the increasing pressure of environment, in order to slow down the destruction to environment, country advocates recycling economy energetically.Therefore, the urea synthesizing ammonia device that can recycle the auxiliary product of coking plant obtains development energetically in recent years, and a lot of urea synthesizing ammonia device project all can be had every year to construct.Granulation tower is the core apparatus in urea production process.The form of structure of granulation tower is concrete silo structure, and spraying layer is one deck platform being positioned at granulation tower top, the stiffness structure form of spraying layer many employings steel structure framework external wrapping concrete.Granulation tower generally adopts slding form operation, and technology is more ripe.And spraying layer is large due to structural load, and belong to work high above the ground, therefore, the construction of spraying layer just becomes a Focal point and difficult point of granulation tower construction.The construction technology of spraying layer mainly contains: 1, the slding form operation of granulation tower barrel complete after, set up console mode scaffold and to construct spraying layer as support system.The method circulation material use amount is large, and turnover rate is very low, and the construction period is long.2, after adopting flexible sliding system construct by granulation tower tower wall, sliding form apparatus dismounting, in the pre-buried lifting beam of tower top, spraying layer ground all prefabricated complete after, fix with tower wall after utilizing the lifting beam of tower top that spraying layer is risen to design attitude.The method needs large-scale crane gear, and construction cost is high, deficiency in economic performance.3, after adopting flexible sliding system to be constructed by granulation tower tower wall, sliding form apparatus is removed, the temporary operating platform of a spraying layer construction is made at ground design, temporary operating platform lifting is fixed on spraying layer subscript relative superiority or inferiority about 1.5 meters, then utilizes temporary operating platform to spraying layer of constructing.Operating platform is trussed construction or space truss structure.Trussed construction need lift with large-scale crane lifting or several large-scale hoist engines, and in construction, operation easier is also comparatively large, and risk is high; The space truss structure integral rigidity that steel pipe is made is poor.
Summary of the invention
The object of the invention is to solve the large problem of aerial construction spraying layer difficulty, and the construction technology that granulation tower spraying layer constructed by a kind of sliding form apparatus traction operation platform is provided.
The present invention is achieved through the following technical solutions:
A kind of construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer, by sliding form apparatus, slding form operation is carried out to granulation tower barrel, sliding form apparatus is utilized to carry operation platform in slding form operation synchronously sliding, sliding to below spraying layer during 1-1.5m position until slding form operation, at granulation tower barrel surrounding evenly several holes for fixing operation platform reserved; Sliding form apparatus carries operation platform and continues upwards slding form operation afterwards, sliding to above spraying layer during 1-1.5m position until slding form operation, suspend slding form operation, operation platform and sliding form apparatus are thrown off, when then utilizing jack operation platform to be dropped to 1-1.5m position below spraying layer, first insert respectively in each hole reserve before and consolidate prefabricated bracket (bracket adopts double flute steel), then operation platform is fixed on each bracket of being embedded on barrel; Sliding form apparatus continues upwards slding form operation, until Wall Construction is complete, is removed by sliding form apparatus after Wall Construction completes, and coordinates tower crane vertical transport construction spraying layer finally by operation platform.
Further, described operation platform comprises central rigid shaped steel ring cylinder, and (structure of central rigid shaped steel ring cylinder is: comprise upper and lower two enclosures, some channel-section steels are evenly fixed with between upper and lower two enclosures, some channel-section steels form tubular), the top of central rigid shaped steel ring cylinder is evenly distributed in some with support double flute steel radially along it, each end supporting double flute steel is welded and fixed with each bracket be embedded on barrel; Round steel pull bar is fixed with between the end of each support double flute steel and the bottom of central rigid shaped steel ring cylinder.
Operation platform and sliding form apparatus are thrown off and are fixed on by operation platform after on each bracket of being embedded on barrel, be fixed with some oblique pull hoist cables in the bottom of the central rigid shaped steel ring cylinder of operation platform along its even circumferential, the other end of oblique pull hoist cable is fixed on granulation tower barrel.
The construction of the inventive method construction granulation tower spraying layer is succinct convenient, not only save a large amount of circulation materials but also remove the large-scale crane of use and large scale hoisting machinery from, saved cost, economic benefit is good, and owing to there being operating platform well to ensure that high-altitude working security again.The inventive method also achieves good effect in actual applications, and wins owner's favorable comment.
Construction method of the present invention tool compared with conventional construction method has the following advantages:
1) save a large amount of circulation materials and remove again the large-scale crane of use and large scale hoisting machinery from, saved cost, economic benefit is good;
2) owing to there being operation platform, in work progress, operating personnel have enough operating spaces, can be good at the safety ensureing constructor.
Accompanying drawing explanation
Fig. 1 is the process chart of the inventive method.
Fig. 2 is the structural representation of operation platform in the present invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the schematic diagram that in the present invention, operation platform and barrel are fixed by bracket.
Fig. 5 is operation platform and sliding form apparatus connection diagram in the present invention.
Fig. 6 is hoisting frame and peripheral operation platform connection diagram in sliding form apparatus.
In figure: 1-central rigid shaped steel ring cylinder, 2-support double flute steel, 3-bracket, 4-round steel pull bar, 5-oblique pull hoist cable, 6-hoisting frame, the enclosure of 7-hoisting frame, 8-peripheral operation platform, 9-hanging scaffolding, 10-scaffold floor, 11-diagonal brace, 12-railing post, 13-cramp bar, 14-hydraulic jack.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
A kind of construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer, by sliding form apparatus, slding form operation is carried out to granulation tower barrel, sliding form apparatus is utilized to carry operation platform in slding form operation synchronously sliding, sliding to below spraying layer during 1-1.5m position until slding form operation, at granulation tower barrel surrounding evenly several holes for fixing operation platform reserved; Sliding form apparatus carries operation platform and continues upwards slding form operation afterwards, sliding to above spraying layer during 1-1.5m position until slding form operation, suspend slding form operation, operation platform and sliding form apparatus are thrown off, when then utilizing jack operation platform to be dropped to 1-1.5m position below spraying layer, first slottingly respectively in each hole reserve before consolidates prefabricated bracket, then operation platform is fixed on each bracket of being embedded on barrel; Sliding form apparatus continues upwards slding form operation, until Wall Construction is complete, is removed by sliding form apparatus after Wall Construction completes, and coordinates tower crane vertical transport construction spraying layer finally by operation platform.
Operation platform and sliding form apparatus are thrown off and are fixed on by operation platform after on each bracket of being embedded on barrel, some oblique pull hoist cables 5 are fixed with along its even circumferential in the bottom of the central rigid shaped steel ring cylinder 1 of operation platform, the other end of oblique pull hoist cable 5 is fixed on granulation tower barrel, as shown in Figure 4.
Below elaborating the inventive method:
The inventive method adopts rigidity slip form platform construction technology (the above position of spraying layer is flexible sliding platform system), utilize support bar in concrete as support system, gate-type hoisting frame utilizes feed-through hydraulic jack to drive hoisting frame and attached sliding shuttering thereof and operation platform, operation platform adopts formwork support system of prilling tower hanging structure, described operation platform comprises central rigid shaped steel ring cylinder 1, the top of central rigid shaped steel ring cylinder 1 is evenly distributed in some with support double flute steel 2 radially along it, end and each bracket 3 be embedded on barrel of each support double flute steel 2 are welded and fixed, round steel pull bar 4 is fixed with, as shown in Figure 2,3 between the end of each support double flute steel 2 and the bottom of central rigid shaped steel ring cylinder 1.The bottom of central rigid shaped steel ring cylinder 1 is fixed with some oblique pull hoist cables 5 along its even circumferential, and the other end of oblique pull hoist cable 5 is fixed on granulation tower barrel.Along with the side of reinforcing bar prick, concrete build progressively sliding, the construction technology completed.Vertical transport adopts self-elevating tower crane, adopts the outer packway arranged, adopt granulation tower stair upper and lower after variable cross-section before upper and lower personnel channel's first time variable cross-section.
As shown in Figure 1, be the concrete technology flow chart of the inventive method:
1 key points for operation: granulation tower adopts known " hydraulic slip-form " construction, and staircase and cylindrical body synchronous are sliding, utilize YKT56 type hydraulic control cabinet and GYD60 type hydraulic jack, high-pressure rubber oil pipe and spacing levelling device assembled scheme are constructed; Stair synchronous construction, spraying layer Construction Principle is after cylindrical shell slip form work terminates, and utilization is fallen operation platform and constructed.
2 sliding form apparatus systems: sliding form apparatus system is a kind of known construction system in this area, and it is primarily of template system, operation platform system, hydraulic system, Construction precision control system and water, electric corollary system composition.
Template system is made up of template, enclosure, hoisting frame 6 etc., and template system is the core composition component of slding form operation, plays a decisive role to the success of slding form operation.Template bear concrete lateral pressure, impact force and sliding time frictional resistance, and make concrete shaping by the cross sectional shape of designing requirement.Enclosure makes template keep the flat shape of assembling, and template and hoisting frame 6 are connected into an entirety.The outer distortion that hoisting frame 6 bears template, enclosure produces due to concrete lateral pressure and impact force, bears simultaneously and acts on vertical load in whole template, play an important role to whole sliding mode system; Hoisting frame 6 is " door " font hoisting frame of 1100*1600mm, and column employing is single, and [No. 14 channel-section steels, crossbeams adopt two [No. 6 channel-section steels of 12 and column full welds.For ensureing uniformity when all hoisting frames 6 rise, [10 respectively layout two road hoisting frame enclosures 7 are adopted on the inside and outside limit of hoisting frame 6, in order to each hoisting frame 6 is connected to become entirety, balance sliding property, and as operating platform and operation platform load-bearing skeleton as shown in Figure 5, adopt between hoisting frame 6 and hoisting frame enclosure 7 and be welded to connect, hoisting frame 6 structure as shown in Figure 5,6.
Operation platform system is made up of peripheral operation platform 8, hanging scaffolding 9 etc., and it is related to the safety of slding form operation.Peripheral operation platform 8 is outwards encorbelmented 800mm, [8 channel-section steels weld with hoisting frame 6 outer column in employing, be paved with the thick scaffold floor of 50mm 10 above, be welded with 300 diagonal braces 11 with hoisting frame 6 column below, the high railing post of 1500mm 12 is vertically fixed in outer, as shown in Figure 5,6.Hanging scaffolding 9 width design is 600mm, and suspension rod, cross bar all adopt L40*4mm angle steel to weld and weld with hoisting frame 6, and add M16*50 plain bolt stiffened edge and connect, following operating surface adopts bamboo springboard completely to spread, outside Φ 16 reinforcing bar@300 arranges guardrail, and adds safety net, as shown in Figure 5.
Hydraulic system is made up of cramp bar 13, hydraulic jack 14, hydraulic control cabinet and oil circuit circuit, and it is the Major Systems equipment of sliding formwork, as shown in Figure 5.Construction precision control system comprises building axis, absolute altitude, the observation of structure vertical degree and control device.The platform high-pressure hydraulic pump of a hydromining 150m lift supplies water, and water pipe adopts φ 48 coating steel pipe to climb from staircase with platform is sliding.Platform electric consumption on lighting all adopts 36V safe voltage, and 60 cover safety flares established by whole platform, separately establishes 4 cover 3.5KW to drip lamp, configures a 5KW transformer.Above-mentioned these all belong to the known technology of this area, and those skilled in the art are familiar with this and can realize.
Below further illustrating spraying layer construction:
1) operation platform is in place: described operation platform is rigid support system cylinder main operation platform, adopts radiation joist steel structure, and is supported in the interior enclosure of hoisting frame.During concrete enforcement, support double flute steel on operation platform adopts two [the 14 channel-section steel radiation beams in Shi 48 road, the inner of channel-section steel radiation beam is connected with the upper enclosure of central rigid shaped steel ring cylinder, outer end is connected with enclosure in hoisting frame, the round steel pull bar of one Φ 25 round steel making is had at the bottom of per pass channel-section steel radiation beam, the lower enclosure that round steel pull bar one end connects channel-section steel radiation beam, the other end connects central rigid shaped steel ring cylinder, strains with flower basket bolt.Operation platform purlin is 100*50mm wood a tree, used in making timber for boats, completely spreads the thick bamboo slab rubber of 18mm above, for ensureing the reliability of operation platform plate construction, re-lays 2mm steel plate under bamboo slab rubber.
About 1-1.5m position under slding form operation to spraying layer stiffness girder steel, supports double flute steel position reserved opening at barrel surrounding operation platform, and hole size is about support double flute steel size, slding form operation is to spraying layer above 1-1.5m right position place, stop slding form operation, and at this absolute altitude place reserved opening, reserved location is at post position, amount to 24 places, operating platform is divided equally with 8 5t jacks, about 1-1.5m position under operation platform to spraying layer stiffness girder steel evenly falls, prefabricated double flute steel, namely bracket is filled in reserved opening, it is firm that the support double flute steel of operation platform welds with the bracket on barrel, simultaneously, be connected with the lower enclosure of 20mm wire rope inclined-pulling hoist cable with central rigid shaped steel ring cylinder, it is also fastening firm with jack that the other end is fixed on barrel.Operation platform is mainly the operating platform of constructor, and the shelf, template, reinforcing bar etc. of concrete formwork, by stiff skeleton and operating platform shared.
2) strengthening concrete joist steel skeleton is installed: strengthening concrete joist steel skeleton is installed and adopted terrestrial segment prefabricated, and tower crane lifts, the method that operation platform is grouping.First one section of steel frame is winched to strengthening concrete beam reserved opening position, tower crane coordinates adjustment steel frame position, after installation, supporting by scaffold tube is fixed on operation platform, lifting residue respectively several sections is to assigned address again, welding is grouping, for being that steel frame has good rigidity, according to 3 ‰ arch cambers after having adjusted.
3) formwork erection, concrete construction: because this operation platform structure has enough rigidity, so template can install on operation platform, local adopts and hangs template construction, and concrete conveniently construction method carries out.
Claims (3)
1. the construction technology of a sliding form apparatus traction operation platform construction granulation tower spraying layer, by sliding form apparatus, slding form operation is carried out to granulation tower barrel, it is characterized in that: utilize sliding form apparatus to carry operation platform in slding form operation synchronously sliding, sliding to below spraying layer during 1-1.5m position until slding form operation, at granulation tower barrel surrounding evenly several holes for fixing operation platform reserved; Sliding form apparatus carries operation platform and continues upwards slding form operation afterwards, sliding to above spraying layer during 1-1.5m position until slding form operation, suspend slding form operation, operation platform and sliding form apparatus are thrown off, when then utilizing jack operation platform to be dropped to 1-1.5m position below spraying layer, first slottingly respectively in each hole reserve before consolidates prefabricated bracket, then operation platform is fixed on each bracket of being embedded on barrel; Sliding form apparatus continues upwards slding form operation, until Wall Construction is complete, is removed by sliding form apparatus after Wall Construction completes, and coordinates tower crane vertical transport construction spraying layer finally by operation platform.
2. the construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer according to claim 1, it is characterized in that: described operation platform comprises central rigid shaped steel ring cylinder (1), the top of central rigid shaped steel ring cylinder (1) is evenly distributed in some with support double flute steel (2) radially along it, each end supporting double flute steel (2) is welded and fixed with each bracket (3) be embedded on barrel; Round steel pull bar (4) is fixed with between the end of each support double flute steel (2) and the bottom of central rigid shaped steel ring cylinder (1).
3. the construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer according to claim 1 and 2, it is characterized in that: operation platform and sliding form apparatus are thrown off and be fixed on by operation platform after on each bracket of being embedded on barrel, be fixed with some oblique pull hoist cables (5) in the bottom of central rigid shaped steel ring cylinder (1) of operation platform along its even circumferential, the other end of oblique pull hoist cable (5) is fixed on granulation tower barrel.
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Cited By (2)
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| CN105155840A (en) * | 2015-07-03 | 2015-12-16 | 山西宏厦建筑工程有限公司 | Flexible slip-form lifting measure beam construction method for granulation tower |
| CN107630583A (en) * | 2016-07-19 | 2018-01-26 | 五冶集团上海有限公司 | One kind hangs steel pipe truss construction method with Bailey bracket is counter |
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| JP2002356297A (en) * | 2001-05-31 | 2002-12-10 | Kyowa Exeo Corp | Steel tower constructing crane and steel tower construction method using crane |
| US20050247008A1 (en) * | 2002-06-05 | 2005-11-10 | Reiki Fujiwara | Scaffolding device for work on inner wall face of tower vessel body, and method of work on inner wall face using the scaffolding device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105155840A (en) * | 2015-07-03 | 2015-12-16 | 山西宏厦建筑工程有限公司 | Flexible slip-form lifting measure beam construction method for granulation tower |
| CN107630583A (en) * | 2016-07-19 | 2018-01-26 | 五冶集团上海有限公司 | One kind hangs steel pipe truss construction method with Bailey bracket is counter |
| CN107630583B (en) * | 2016-07-19 | 2019-12-03 | 五冶集团上海有限公司 | It is a kind of to hang steel pipe truss construction method with Bailey bracket is counter |
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