CN104594631B - The construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer - Google Patents

The construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer Download PDF

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CN104594631B
CN104594631B CN201510058991.3A CN201510058991A CN104594631B CN 104594631 B CN104594631 B CN 104594631B CN 201510058991 A CN201510058991 A CN 201510058991A CN 104594631 B CN104594631 B CN 104594631B
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operation platform
construction
sliding
granulation tower
spraying layer
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CN104594631A (en
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李卫东
王颖哲
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China Chemical Engineering Second Construction Corp
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China Chemical Engineering Second Construction Corp
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Abstract

The present invention is the construction technology of a kind of sliding form apparatus traction operation platform construction granulation tower spraying layer, the problem solving existing granulation tower spraying layer constructional difficulties.The inventive method is to utilize the sliding form apparatus of granulation tower Wall Construction to carry operation platform to synchronize sliding, until sliding to time below granulation tower spraying layer, the sliding form apparatus of operation platform with granulation tower barrel is disengaged and is fixed to by operation platform on the bracket being embedded in barrel, then proceed to complete for the sliding form apparatus of barrel upwards sliding Wall Construction, recycle operation platform after Wall Construction is complete and mix tower crane vertical transport construction spraying layer.The inventive method construction granulation tower spraying layer construction is succinct convenient, not only save substantial amounts of circulation material but also remove the large-scale crane of use and large scale hoisting machinery from, having saved cost, economic benefit is good, and well ensure that again high-altitude working security with operating platform.The inventive method also achieves good effect in actual applications, and wins owner's favorable comment.

Description

The construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer
Technical field
The present invention relates to a kind of new granulation tower spraying layer construction technology, specifically the construction technology of a kind 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, the pressure of environment is increasing, in order to slow down the destruction to environment, country advocates recycling economy energetically.Therefore, the urea synthesis ammonia device that the auxiliary product of coking plant recycles can be obtained development energetically in recent years, a lot of urea synthesis ammonia device project all can be had every year to construct.Granulation tower is the core apparatus in urea production process.The version of granulation tower is concrete silo structure, and spraying layer is in one layer of platform on granulation tower top, the stiffness structure form of spraying layer many employings steel structure framework external wrapping concrete.Granulation tower is generally adopted slding form operation, and technology is more ripe.And spraying layer is big due to structural load, and belonging to work high above the ground, therefore, the construction of spraying layer just becomes an emphasis and the difficult point of granulation tower construction.The construction technology of spraying layer mainly has: 1, the slding form operation of granulation tower barrel complete after, set up console model scaffold as support system construction spraying layer.The method circulation material makes consumption big, and turnover rate is very low, and the construction period is long.2, adopt after granulation tower tower wall construct by flexible sliding system, sliding form apparatus dismounting, in the pre-buried lifting beam of tower top, spraying layer ground all prefabricated complete after, utilize the lifting beam of tower top to fix with tower wall after 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, make the temporary operating platform of spraying layer construction at ground design, temporary operating platform lifting is fixed on spraying layer subscript relative superiority or inferiority about 1.5 meters, then utilize temporary operating platform to spraying layer of constructing.Operating platform is truss structure or grid structure.Truss structure need to the large-scale hoist engine lifting of large-scale crane lifting or several, and in construction, operation easier is also relatively big, and risk is high;The grid structure integral rigidity that steel pipe is made is poor.
Summary of the invention
The invention aims to solve the problem that construction spraying layer difficulty is big in the air, and the construction technology of a kind of sliding form apparatus traction operation platform construction granulation tower spraying layer 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, granulation tower barrel is carried out slding form operation, slding form operation utilizes sliding form apparatus carry operation platform and synchronize sliding, until slding form operation sliding to 1-1.5m position below spraying layer time, uniformly reserve several holes for fixing operation platform in granulation tower barrel surrounding;Sliding form apparatus carries operation platform and continues up slding form operation afterwards; until slding form operation sliding to 1-1.5m position above spraying layer time; suspend slding form operation; operation platform disengages with sliding form apparatus; when then utilizing jack that operation platform is dropped to 1-1.5m position below spraying layer; in each hole reserved before, first insert solid prefabricated bracket (bracket adopts double flute steel) respectively, then operation platform is fixed on each bracket being embedded on barrel;Sliding form apparatus continues up slding form operation, until Wall Construction is complete, sliding form apparatus is removed after completing by Wall Construction, coordinates tower crane vertical transport construction spraying layer finally by operation platform.
Further, described operation platform includes central rigid shaped steel ring cylinder, and (structure of central rigid shaped steel ring cylinder is: include upper and lower two enclosures, some channel-section steels uniformly it are 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, and each end supporting double flute steel is welded and fixed with each bracket being embedded on barrel;It is fixed with round steel pull bar between each end and bottom of central rigid shaped steel ring cylinder supporting double flute steel.
After operation platform disengages with sliding form apparatus and is fixed on by operation platform on each bracket being embedded on barrel, being 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 inventive method construction granulation tower spraying layer construction is succinct convenient, not only save substantial amounts of circulation material but also remove the large-scale crane of use and large scale hoisting machinery from, having saved cost, economic benefit is good, and well ensure that again high-altitude working security with operating platform.The inventive method also achieves good effect in actual applications, and wins owner's favorable comment.
Construction method of the present invention has the advantage that compared with conventional construction method
1) saving substantial amounts of circulation material and remove again the large-scale crane of use and large scale hoisting machinery from, saved cost, economic benefit is good;
2) with operation platform, in work progress, operator have enough working places, it is possible to well ensure the safety of workmen.
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 is fixed by bracket with barrel.
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, 7-hoisting frame enclosure, 8-peripheral operation platform, 9-hanging scaffolding, 10-scaffold board, 11-diagonal brace, 12-railing post, 13-support 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, granulation tower barrel is carried out slding form operation, slding form operation utilizes sliding form apparatus carry operation platform and synchronize sliding, until slding form operation sliding to 1-1.5m position below spraying layer time, uniformly reserve several holes for fixing operation platform in granulation tower barrel surrounding;Sliding form apparatus carries operation platform and continues up slding form operation afterwards; until slding form operation sliding to 1-1.5m position above spraying layer time; suspend slding form operation; operation platform disengages with sliding form apparatus; when then utilizing jack that operation platform is dropped to 1-1.5m position below spraying layer; in each hole reserved before, first insert solid prefabricated bracket respectively, then operation platform is fixed on each bracket being embedded on barrel;Sliding form apparatus continues up slding form operation, until Wall Construction is complete, sliding form apparatus is removed after completing by Wall Construction, coordinates tower crane vertical transport construction spraying layer finally by operation platform.
After operation platform disengages with sliding form apparatus and is fixed on by operation platform on each bracket being embedded on barrel, it is fixed with some oblique pull hoist cables 5 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.
The following is elaborating the inventive method:
The inventive method adopts rigidity slip form platform construction technology (spraying layer is with upper bit for flexible sliding platform system), utilize the support bar in concrete as a support system, gate-type hoisting frame utilizes feed-through hydraulic jack to drive hoisting frame and attached sleiding form thereof and operation platform, operation platform adopts formwork support system of prilling tower hanging structure, described operation platform includes 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 being embedded on barrel;It is fixed with round steel pull bar 4, as shown in Figure 2,3 between each end and bottom of central rigid shaped steel ring cylinder 1 supporting double flute steel 2.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 pricks, concrete builds construction technology that is progressively sliding, that complete.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 first time variable cross-section.
As it is 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 is sliding with cylindrical body synchronous, utilize YKT56 type hydraulic control cabinet and GYD60 type hydraulic jack, high-pressure rubber oil pipe and the construction of spacing levelling device assembled scheme;Stair synchronous construction, spraying layer Construction Principle is after cylinder slip form work terminates, and utilization is dropped operation platform and constructed.
2 sliding form apparatus systems: sliding form apparatus system is a kind of known construction system in this area, it is mainly made up of template system, operation platform system, hydraulic system, Construction precision control system and water, electricity corollary system.
Template system is made up of template, enclosure, hoisting frame 6 etc., and template system is the core composition component of slding form operation, and the success of slding form operation is played a decisive role.Template bear concrete lateral pressure, impulsive force and sliding time frictional resistance, and make concrete by the cross sectional shape molding of designing requirement.Enclosure makes template keep the flat shape assembled, and template and hoisting frame 6 are connected into an entirety.The outer deformation that hoisting frame 6 bears template, enclosure produces due to concrete lateral pressure and impulsive force, bears simultaneously and acts on vertical load in whole template, whole sliding mode system is played an important role;Hoisting frame 6 is " door " font hoisting frame of 1100*1600mm, and column adopts single [No. 14 channel-section steels, crossbeams employing two [No. 6 channel-section steels of 12 and column full welds.For ensureing concordance 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, adopting between hoisting frame 6 and hoisting frame enclosure 7 and be welded to connect, hoisting frame 6 structure is 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 outwards is encorbelmented 800mm, [8 channel-section steels weld with hoisting frame 6 outer column in employing, be paved with above thick for 50mm scaffold board 10, below and hoisting frame 6 column be welded with 300 diagonal braces 11, railing post 12 high for 1500mm is vertically fixed in outer, as shown in Figure 5,6.Hanging scaffolding 9 width design is 600mm, suspension rod, cross bar all adopt L40*4mm angle steel welding weld with hoisting frame 6, and add M16*50 plain bolt reinforcement limit 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 formed by supporting 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 includes observation and the control facility of building axis, absolute altitude, structure vertical degree.The platform high-pressure hydraulic pump of one 150m lift of hydromining 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, whole platform to set 60 set safety flares, separately sets 4 set 3.5KW and drips lamp, configures a 5KW transformator.Above-mentioned these broadly fall into techniques known, and this is familiar with and is capable of by those skilled in the art.
The following is 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.When being embodied as, support double flute steel on operation platform adopts double; 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, round steel pull bar one end connects the lower enclosure of channel-section steel radiation beam, other end connection 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 18mm thickness bamboo slab rubber above, for ensureing the reliability of operation platform plate construction, re-lays 2mm steel plate under bamboo slab rubber.
Slding form operation about 1-1.5m position 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, operation platform about 1-1.5m position to spraying layer stiffness girder steel uniformly drops, 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, it is connected with the lower enclosure of 20mm wire rope inclined-pulling hoist cable with central rigid shaped steel ring cylinder, the other end is fixed on barrel and firm with jack fastening.Operation platform is mainly the operating platform of workmen, and the shelf of concrete formwork, template, reinforcing bar etc., 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 being grouping on operation platform.First one section of steel skeleton is winched to strengthening concrete beam reserved opening position, tower crane coordinates adjustment steel skeleton position, after installation, supporting by scaffold tube is fixed on operation platform, lifting residue respectively several sections is to specifying position again, adjustment is grouping welding after completing, for being that steel skeleton has good rigidity, according to 3 ‰ arch cambers.
3) formwork erection, concrete construction: owing to this operation platform structure has enough rigidity, so template can install on operation platform, local adopt hang template construction, concrete conventionally construction method carries out.

Claims (2)

1. the construction technology of a sliding form apparatus traction operation platform construction granulation tower spraying layer, by sliding form apparatus, granulation tower barrel is carried out slding form operation, it is characterized in that: slding form operation utilizes sliding form apparatus carry operation platform and synchronize sliding, until slding form operation sliding to 1-1.5m position below spraying layer time, uniformly reserve several holes for fixing operation platform in granulation tower barrel surrounding;Sliding form apparatus carries operation platform and continues up slding form operation afterwards; until slding form operation sliding to 1-1.5m position above spraying layer time; suspend slding form operation; operation platform disengages with sliding form apparatus; when then utilizing jack that operation platform is dropped to 1-1.5m position below spraying layer; in each hole reserved before, first insert solid prefabricated bracket respectively, then operation platform is fixed on each bracket being embedded on granulation tower barrel;Sliding form apparatus continues up slding form operation, until by complete for granulation tower Wall Construction, sliding form apparatus is removed after completing by granulation tower Wall Construction, coordinates tower crane vertical transport construction spraying layer finally by operation platform;Wherein, described operation platform includes central rigid shaped steel ring cylinder (1), the top of central rigid shaped steel ring cylinder (1) is evenly distributed in some supports double flute steel (2) radially along it, and each end supporting double flute steel (2) is welded and fixed with each bracket (3) being embedded on granulation tower barrel;It is fixed with round steel pull bar (4) between each end and bottom of central rigid shaped steel ring cylinder (1) supporting double flute steel (2).
2. the construction technology of sliding form apparatus traction operation platform according to claim 1 construction granulation tower spraying layer, it is characterized in that: after operation platform disengages with sliding form apparatus and is fixed on by operation platform on each bracket being embedded on granulation tower barrel, being 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.
CN201510058991.3A 2015-02-05 2015-02-05 The construction technology of sliding form apparatus traction operation platform construction granulation tower spraying layer Active CN104594631B (en)

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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
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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CN102777044A (en) * 2012-08-07 2012-11-14 中化二建集团有限公司 Hoisting method of steel-structured spraying layer of urea prilling tower
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CN103485574A (en) * 2013-10-08 2014-01-01 贵州开磷建设有限责任公司 Method for constructing reinforced concrete structure of tower top of prilling tower

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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002356297A (en) * 2001-05-31 2002-12-10 Kyowa Exeo Corp Steel tower constructing crane and steel tower construction method using crane
CN102733608A (en) * 2012-08-03 2012-10-17 贵州开磷建设有限责任公司 Construction method for spray head layer of granulation tower
CN102777044A (en) * 2012-08-07 2012-11-14 中化二建集团有限公司 Hoisting method of steel-structured spraying layer of urea prilling tower
CN103321404A (en) * 2013-06-20 2013-09-25 贵州开磷建设有限责任公司 Adjustment construction method for slip form formwork of concrete varying section of tower wall of granulation tower
CN103485574A (en) * 2013-10-08 2014-01-01 贵州开磷建设有限责任公司 Method for constructing reinforced concrete structure of tower top of prilling tower

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