CN109882733A - Storage tank supporting leg construction technology - Google Patents
Storage tank supporting leg construction technology Download PDFInfo
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- CN109882733A CN109882733A CN201910066590.0A CN201910066590A CN109882733A CN 109882733 A CN109882733 A CN 109882733A CN 201910066590 A CN201910066590 A CN 201910066590A CN 109882733 A CN109882733 A CN 109882733A
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Abstract
The invention discloses a kind of storage tank supporting leg construction technologies, are related to the technical field of Storage Tank Construction, solve the problems, such as that existing storage tank supporting leg construction quality is poor, its key points of the technical solution are that the following steps are included: A. storage tank supporting leg production process；B. storage tank supporting leg lifts process: the inspection before the installation of a. steel member；B. component mark marks；C. the setting of cable wind rope and anchoring；D. scaffold prepares；E. bottom of a cup adjusts；F. steel column is installed；G. steel column corrects: 1. base for post absolute altitude；2. the alignment of cross hairs in length and breadth；3. the correction of shaft verticality；H. crossbeam is installed；I. crossbeam corrects: 1. Pass line adjustment；2. beam vertical degree corrects, the installation accuracy of steel column and crossbeam is improved actual elevation measurement, by way of reticle alignment, level and crane hang plumb bob in length and breadth, improves the quality of storage tank supporting leg construction.
Description
Technical field
The present invention relates to the technical fields of Storage Tank Construction, more specifically, it is related to a kind of storage tank supporting leg construction technology.
Background technique
Storage tank is the large storage facilities of liquefied gas, and with the continuous development of present society, the demand of the energy is got over
Come more, so the demand for storage tank is also gradually increasing, and the requirement for flask volume is also being gradually increased.
Build when Storage Tank Construction firstly the need of the supporting leg to storage tank, the supporting leg of storage tank is to carry out entire storage tank
The structure of support, with the continuous increase required now for flask volume, the weight and storage tank of storage tank itself can be deposited
The increase of the weight of the liquefied gas of storage, the requirement for the construction quality of storage tank supporting leg is higher and higher, this is also meaned that pair
Error requirements in storage tank supporting leg work progress are increasingly stringenter, in the construction of existing storage tank supporting leg mostly by virtue of experience
Control construction quality, different construction personnel construct the storage tank supporting leg completed difference in quality it is larger, many construction personnel apply
The storage tank supporting leg of work is not able to satisfy the requirement to the support of large volume storage tank, and needing one kind now can be improved storage tank supporting leg construction matter
The construction method of amount.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of storage tank supporting leg construction technology, lead to
It crosses actual elevation measurement and the mode of reticle alignment is corrected the position of steel column in length and breadth, hung by level and crane
The mode of plumb bob is corrected the position of crossbeam, improves the quality of storage tank supporting leg construction.
To achieve the above object, the present invention provides the following technical scheme that a kind of storage tank supporting leg construction technology, including it is following
Step:
A. storage tank supporting leg production process: when storage tank supporting leg is made the following steps are included:
A. basis is checked and accepted: basis is checked and accepted should be according to " vertical cylinder steel welds Storage Tank Construction and acceptance specification GB50128-
2005 " related clause carries out an acceptance inspection, and makes detailed basic record of acceptance, if any unqualified position should be to basic examination at
Subsequent operation can be carried out after reason is qualified；
B. unwrapping wire: being determined the centerline of every supporting leg installation site by construction drawing, is measured and is determined rim of a cup baseplane absolute altitude, and combines
Fashioned iron sectional dimension determines supporting leg bottom outer-edge dimension line, unwrapping wire and makes label with marking pen on corresponding rim of a cup baseplane；
C. the examination of materials: test basis " construction of National Standard of the People's Republic of China's structural steelwork and acceptance specification GJ05-
83 " related clause requires to carry out in, and meets the requirement of design document；
D. blanking: the truncation that can not there is crackle to be either greater than 1mm on fracture after cutting is completed, and should be by edge
Molten tumor and splash clean out, carry out the part of accurate cutting surface roughness can not be greater than 0.03mm, carry out machine
The part of tool cutting, and the deviation of preceding tangent line and number stockline is not greater than 2mm, and should be clean by deburred；
E. correct, bending and edge are processed: the steel surface after correction cannot have apparent concave surface and damage, surface scratch depth
It is not preferably greater than 0.5mm, common carbon structural steel and low-alloy structural steel, allows to heat and correct, heating temperature is forbidden to be more than just
Fiery temperature (900 DEG C), the low-alloy structural steel after heating correction must Slow cooling；
F. storage tank supporting leg docks: before assembling, iron rust of the connection surface within the scope of the every 30~50mm of side of weld seam, and burr and greasy dirt etc.
It must remove clean；Then in the welding for carrying out storage tank supporting leg；
G. sandblasting preservative treatment: storage tank supporting leg welding needs to carry out derusting by sandblasting after terminating, and then carries out rust preventive paint,
Priming paint is epoxy zinc rich primer when spray painting, and intermediate coat is epoxy micaceous iron anti-corrosive primer, and finishing coat is aliphatic polyurethane top coat, spray painting
210 μm of overall thickness >；
B. storage tank supporting leg lift process: when storage tank supporting leg is lifted the following steps are included:
A. the inspection before steel member installation: steel construction needs the stringent quality to steel construction to check after marching into the arena；
B. component mark marks: carrying out the mark of center line, elevation line before lifting to steel member, asymmetric component is also answered
Installation direction is marked, center of gravity or suspension centre should be marked out to large-scale component, mark can be used different from component coating process color
Marking is painted, is accomplished clear, accurate, eye-catching；
C. the setting of cable wind rope and anchoring: before starting lifting, it should first set cable wind rope and be anchored cable wind rope, due to just starting
The steel construction of lifting, before being fitted without support and corresponding connecting elements, individual component does not form a stable sky
Between system, therefore a certain number of cable wind ropes should be set before lifting, be fixed by certain anchoring facility, such as steel column
Lateral rigidity is poor, cable wind rope should be arranged in side after lifting, cable wind rope should use wirerope, be anchored on fixed building
Above, when unfixed place is fixed, ground anchor peg should be beaten on the ground, steel pipe can be used in ground anchor peg, it is necessary to tilt, depth
No less than 2.5 meters；
D. scaffold prepares: scaffolding height steel pipe type scaffold about concordant with storage tank stabilizer blade overhead height, to lift knot
Suspension hook is removed after beam；The scaffold for setting up completion cannot influence the lifting of column and in place；
E. bottom of a cup adjusts: being fixed temporarily for steel column needs to rely on the tapered tenon of rim of a cup card, referring to lever principle, is arranged at column bottom
One temporary support, temporary support requires that the weight of upper post and beam can be born and what is generated due to the adjustment of steel column upper end is waved push away
Power；Temporary support uses 10# channel steel welding fabrication, and length and width are 5mm bigger than column base plate size, and the position absolute altitude of support is in place
Afterwards, it drills in bottom of a cup four direction and is inserted into reinforcing bar, reinforcing bar is welded with support, then pours pea gravel concreten filling support and wall of cup
Between gap, the weight and thrust that concrete setting rear support is born can adequately pass to foundation platform；
F. steel column is installed: being carried out the installation of first steel column, is selected the loop wheel machine of safety to be lifted by crane according to the weight of steel column, in steel
Hang after wirerope is lifted to the vertical overhead of rim of a cup, be slowly declined in bottom of a cup support at top end, column bottom contacted with support after with
The two sides verticality for observing steel column, rapidly in rim of a cup along steel column surrounding card tapered steel tenon after two sides is vertical, and will
Steel tenon and steel column spot welding fix tightly, prevent sliding and loosen, while respectively setting a guy steel cable in steel column four direction,
Firm to tenon card, after guy steel cable stress, crane can slowly descend hook, and observation steel column is drawn without crane without loose after generation inclination
Hook, one-mast support lifting are completed；After first pillar completes lifting, the adjacent column for there are column braces is lifted immediately, equally uses crane
Column is hung to after column bottom contacts with support, separately use a lifting capacity for 40 tons of truck crane by column braces, tie-rod etc. by branch
Be hung to position, after blending bolt is tightened, adjacent pillars lifting is completed, formed association after the completion of lifting between two steel columns, steel column it is weak
Axis direction is stable, but strong two direction of axis still needs to set cable wind rope；
G. steel column corrects: steel column correction includes the next steps:
1. base for post absolute altitude: according to the physical length of steel column, the flatness at column bottom, the distance at the poly- column bottom in capital, the weight of steel column installation
Point is the absolute altitude guaranteed at the top of steel column, the distance of the preceding first measurement steel column top surface of lifting to steel column bottom, then according to this distance
The placement thickness for determining steel column foot backing plate, when needing to carry out steel plate to fill out pad, stack must not exceed three blocks of steel plates each time；
2. the alignment of cross hairs in length and breadth: before steel column installation, will be marked cross hairs in length and breadth on basis with theodolite, while steel
Four faces of column shaft mark the center line of steel column, and in the case that in steel column installation, crane does not break off relations, slowly fall steel
Column, make four face center lines being marked on steel column on the basis of the reticle alignment in length and breadth that marks, accomplish that line line intersects as far as possible；
3. the correction of shaft verticality: on the extended line of the cross hairs in length and breadth of steel column or slightly inclined position sets up two longitudes and latitudes
Instrument carries out squareness measurement, and the angle of theodolite and cross hairs in length and breadth should be less than 15 °, is carved using steel or elastic cable wind rope carries out
Correction after correction, unclamps cable wind rope and does not stress, then carry out adjustment of resuming classes；
H. crossbeam is installed: being lifted when crossbeam is installed using suitable crane, the sequence of transverse beam lifting and the installation of steel column are suitable
Sequence is identical, Xian Diao lower layer crossbeam, then hangs on a layer crossbeam；
I. crossbeam corrects: crossbeam correction includes the next steps:
1. Pass line adjustment: when one across i.e. two rows of crossbeam whole rigging out after, set up on beam or specially with a level frame
Platform on, carry out the pilot measurement of every beam both ends elevation, by the data weighted average of measurement, a standard value calculated, according to this
Standard value calculates the size adjusted required for each point；
2. beam vertical degree corrects: hanging plumb bob from crane girder top flange and get off, measure the level at cotton rope to web or more two
Distance illustrates vertically, if the horizontal distance at two is different, to need to be adjusted if the horizontal distance at two is identical；
C. it connects and fastens: after carrying out passed examination to jointing everywhere, can be fastened and be welded, carry out
When installation, any mounting hole all cannot carry out reaming by cutting,
D. it welds: checking that the quality of assembling and the removing surface of welding position is for example undesirable, answer reconditioning repair welding, qualified rear
It can welding；Building site field joint preferably uses hammering method to eliminate stress, when eliminating intermediate layer stress with hammering method, should use round end
Hand hammer or small vibrating tool carry out, and should not hammer to the base material of root run, cap weld or weld groove edge, weld
It connects completion and needs anticorrosion with painting paint later；
E. priming paint repairing and finishing coat brushing: dirt, impurity, welding slag of steel structure surface etc. are cleaned out in surface treatment, and priming paint is repaired
Same paint should be used by mending, and pay attention to brushing uniformly, and finishing coat should be brushed after installation is complete, and type used should be with design one
It causes.
By using above-mentioned technical proposal, mark is adjusted by actual level measurement when correcting to steel column
Height corrects the verticality of steel column by theodolite by the installation of cross hairs in length and breadth being arranged to know steel column,
Whether the absolute altitude for calculating crossbeam when correcting to crossbeam by level is accurate, measures cross by way of hanging plumb bob
The verticality of beam, to guarantee that the position of steel column and crossbeam and indices are all satisfactory, so that the storage built
Tank supporting leg meets large volume storage tank load-bearing requirements.
The present invention is further arranged to: in the step A, before blanking should by steel surface cutting region iron rust,
The removings such as greasy dirt are clean.
By using above-mentioned technical proposal, measurement when blanking is enabled to by the iron rust and greasy dirt of removing steel surface
It is more accurate, and iron rust and greasy dirt will not impact the accurate of blanking in blanking.
The present invention is further arranged to: in the step A, when carrying out blanking, and the temperature of common carbon structural steel job site
Degree is lower than subzero 20 degrees Celsius, and low-alloy structural spot temperature must not be sheared and be rushed when being lower than subzero 15 degrees Celsius
Hole.
By using above-mentioned technical proposal, the brittleness of common carbon structural steel and low-alloy mechanism all can be big when temperature reduces
Big to increase, when temperature is reduced to subzero 15 degrees Celsius, low-alloy steel carries out being easy to appear rupture when shearing punching, works as temperature
When lower than subzero 20 degrees Celsius, common carbon structural steel is to be easily broken in shearing and punching, common carbon structural steel
The temperature of job site is lower than subzero 20 degrees Celsius, when low-alloy structural spot temperature is lower than subzero 15 degrees Celsius not
It must shear and punching, the waste to material can be reduced.
The present invention is further arranged to: in the step A, when carrying out correction bending, and common carbon structural steel job site
It, must not gagging and cold change song when temperature is lower than -12 DEG C lower than -16 DEG C, low-alloy structural steel spot temperature.
By using above-mentioned technical proposal, when temperature is lower than -12 DEG C, low-alloy structural steel carries out gagging and cold bend(ing)
When be easy to appear fracture, temperature realizes the saving of raw material without gagging and cold bend(ing) when being lower than -12 DEG C, temperature is low
When -16 DEG C, common carbon structural steel carrying out gagging and cold bend(ing) during is easy to appear fracture, temperature is lower than -
The saving to raw material is realized without gagging and cold bend(ing) at 16 DEG C.
The present invention is further arranged to: in the step A, when spray painting, interface position while welding two sides reserve 30~50mm's
Welding bead not paint, and welding is waited to complete, scale removal, paint again later to weld grinding.
By using above-mentioned technical proposal, the position of reserved welding bead can prevent spray painting to the later period without spray painting when spray painting
The influence of welding is welding and is painting again after scale removal, can play the role of antirust to weld.
The present invention is further arranged to: in the step A, carrying out the temperature control for needing to guarantee job site when spraying operation
For system between 5 DEG C~38 DEG C, relative humidity can not be greater than 85%, when rainy day or component surface condense, should not carry out
Spraying operation, and forbid to drench with rain at spraying in four hours after the spray application.
By using above-mentioned technical proposal, when humidity is larger or component surface condenses, the paint and component of spraying
Between adhesion be deteriorated so that the paint layer sprayed on component is easy to happen and falls off, in order to guarantee the quality of spray painting, in humidity
Larger or component surface has and not carry out spraying operation when moisture condensation.
The present invention is further arranged to: in the step D, water, oxide skin, rust, the oil on place surface to be welded are removed before welding
It is dirty.
By using above-mentioned technical proposal, water, oxide skin, rust and the greasy dirt that surface at weldering is removed before welding can be improved welding
Quality.
In conclusion the present invention has the advantages that compared with the prior art
1, the present invention adjusts absolute altitude by actual level measurement when correcting to steel column, passes through cross hairs in length and breadth
Setting know the installation of steel column, the verticality of steel column is corrected by theodolite, when being corrected to crossbeam
Whether the absolute altitude that crossbeam is calculated by level is accurate, and the verticality of crossbeam is measured by way of hanging plumb bob, thus
The position and indices for guaranteeing steel column and crossbeam are all satisfactory, so that the storage tank supporting leg built is to meet substantially
Store up tank load-bearing requirements；
2, the position of reserved welding bead is being welded without the influence that can prevent from painting to later period welding of painting when present invention spray painting
It paints again after complete and scale removal, antirust can be played the role of to weld.
Specific embodiment
A kind of embodiment: storage tank supporting leg construction technology, comprising the following steps:
A. storage tank supporting leg production process: when storage tank supporting leg is made the following steps are included:
A. basis is checked and accepted: basis is checked and accepted should be according to " vertical cylinder steel welds Storage Tank Construction and acceptance specification GB50128-
2005 " related clause carries out an acceptance inspection, and makes detailed basic record of acceptance, if any unqualified position should be to basic examination at
Subsequent operation can be carried out after reason is qualified；
B. unwrapping wire: being determined the centerline of every supporting leg installation site by construction drawing, is measured and is determined rim of a cup baseplane absolute altitude, and combines
Fashioned iron sectional dimension determines supporting leg bottom outer-edge dimension line, unwrapping wire and makes label with marking pen on corresponding rim of a cup baseplane；
C. the examination of materials: test basis " construction of National Standard of the People's Republic of China's structural steelwork and acceptance specification GJ05-
83 " related clause requires to carry out in, and meets the requirement of design document；
D. blanking: should be clean by removings such as iron rust, greasy dirts in steel surface cutting region before blanking, cutting is disconnected after completing
There can not be crackle to be either greater than the truncation of 1mm on mouth, and the molten tumor and splash of edge should be cleaned out, into
The surface roughness of the part of row accurate cutting can not be greater than 0.03mm, carry out the part of machine cuts, and preceding tangent line with number
The deviation of stockline is not greater than 2mm, and should be clean by deburred, and the temperature of common carbon structural steel job site is lower than
Subzero 20 degrees Celsius, low-alloy structural spot temperature must not shear when being lower than subzero 15 degrees Celsius and punching；
E. correct, bending and edge are processed: common carbon structural steel spot temperature is lower than -16 DEG C, low-alloy structural steel work
When making place temperature lower than -12 DEG C, must not gagging and cold changes it is bent, the steel surface after correction cannot have apparent concave surface with
Damage, surface scratch depth are not preferably greater than 0.5mm, common carbon structural steel and low-alloy structural steel, allow to heat and correct, add
Hot temperature is forbidden to be more than normalizing temperature (900 DEG C), and the low-alloy structural steel after heating correction must Slow cooling；
F. storage tank supporting leg docks: before assembling, iron rust of the connection surface within the scope of the every 30~50mm of side of weld seam, and burr and greasy dirt etc.
It must remove clean；Then in the welding for carrying out storage tank supporting leg；
G. sandblasting preservative treatment: storage tank supporting leg welding needs to carry out derusting by sandblasting after terminating, and then carries out rust preventive paint,
Priming paint is epoxy zinc rich primer when spray painting, and intermediate coat is epoxy micaceous iron anti-corrosive primer, and finishing coat is aliphatic polyurethane top coat, spray painting
210 μm of overall thickness >；When spray painting, interface position while welding two sides reserve the welding bead of 30~50mm, not paint, and welding is waited to complete,
Scale removal paints later to weld grinding again；Carry out the temperature control for needing to guarantee job site when spraying operation
Between 5 DEG C~38 DEG C, relative humidity can not be greater than 85%, when rainy day or component surface condense, should not be sprayed
Operation is applied, and forbids to drench with rain at spraying in four hours after the spray application；
B. storage tank supporting leg lift process: when storage tank supporting leg is lifted the following steps are included:
A. the inspection before steel member installation: steel construction needs the stringent quality to steel construction to check after marching into the arena；
B. component mark marks: carrying out the mark of center line, elevation line before lifting to steel member, asymmetric component is also answered
Installation direction is marked, center of gravity or suspension centre should be marked out to large-scale component, mark can be used different from component coating process color
Marking is painted, is accomplished clear, accurate, eye-catching；
C. the setting of cable wind rope and anchoring: before starting lifting, it should first set cable wind rope and be anchored cable wind rope, due to just starting
The steel construction of lifting, before being fitted without support and corresponding connecting elements, individual component does not form a stable sky
Between system, therefore a certain number of cable wind ropes should be set before lifting, be fixed by certain anchoring facility, such as steel column
Lateral rigidity is poor, cable wind rope should be arranged in side after lifting, cable wind rope should use wirerope, be anchored on fixed building
Above, when unfixed place is fixed, ground anchor peg should be beaten on the ground, steel pipe can be used in ground anchor peg, it is necessary to tilt, depth
No less than 2.5 meters；
D. scaffold prepares: scaffolding height steel pipe type scaffold about concordant with storage tank stabilizer blade overhead height, to lift knot
Suspension hook is removed after beam；The scaffold for setting up completion cannot influence the lifting of column and in place；
E. bottom of a cup adjusts: being fixed temporarily for steel column needs to rely on the tapered tenon of rim of a cup card, referring to lever principle, is arranged at column bottom
One temporary support, temporary support requires that the weight of upper post and beam can be born and what is generated due to the adjustment of steel column upper end is waved push away
Power；Temporary support uses 10# channel steel welding fabrication, and length and width are 5mm bigger than column base plate size, and the position absolute altitude of support is in place
Afterwards, it drills in bottom of a cup four direction and is inserted into reinforcing bar, reinforcing bar is welded with support, then pours pea gravel concreten filling support and wall of cup
Between gap, the weight and thrust that concrete setting rear support is born can adequately pass to foundation platform；
F. steel column is installed: being carried out the installation of first steel column, is selected the loop wheel machine of safety to be lifted by crane according to the weight of steel column, in steel
Hang after wirerope is lifted to the vertical overhead of rim of a cup, be slowly declined in bottom of a cup support at top end, column bottom contacted with support after with
The two sides verticality for observing steel column, rapidly in rim of a cup along steel column surrounding card tapered steel tenon after two sides is vertical, and will
Steel tenon and steel column spot welding fix tightly, prevent sliding and loosen, while respectively setting a guy steel cable in steel column four direction,
Firm to tenon card, after guy steel cable stress, crane can slowly descend hook, and observation steel column is drawn without crane without loose after generation inclination
Hook, one-mast support lifting are completed；After first pillar completes lifting, the adjacent column for there are column braces is lifted immediately, equally uses crane
Column is hung to after column bottom contacts with support, separately use a lifting capacity for 40 tons of truck crane by column braces, tie-rod etc. by branch
Be hung to position, after blending bolt is tightened, adjacent pillars lifting is completed, formed association after the completion of lifting between two steel columns, steel column it is weak
Axis direction is stable, but strong two direction of axis still needs to set cable wind rope；
G. steel column corrects: steel column correction includes the next steps:
1. base for post absolute altitude: according to the physical length of steel column, the flatness at column bottom, the distance at the poly- column bottom in capital, the weight of steel column installation
Point is the absolute altitude guaranteed at the top of steel column, the distance of the preceding first measurement steel column top surface of lifting to steel column bottom, then according to this distance
The placement thickness for determining steel column foot backing plate, when needing to carry out steel plate to fill out pad, stack must not exceed three blocks of steel plates each time；
2. the alignment of cross hairs in length and breadth: before steel column installation, will be marked cross hairs in length and breadth on basis with theodolite, while steel
Four faces of column shaft mark the center line of steel column, and in the case that in steel column installation, crane does not break off relations, slowly fall steel
Column, make four face center lines being marked on steel column on the basis of the reticle alignment in length and breadth that marks, accomplish that line line intersects as far as possible；
3. the correction of shaft verticality: on the extended line of the cross hairs in length and breadth of steel column or slightly inclined position sets up two longitudes and latitudes
Instrument carries out squareness measurement, and the angle of theodolite and cross hairs in length and breadth should be less than 15 °, is carved using steel or elastic cable wind rope carries out
Correction after correction, unclamps cable wind rope and does not stress, then carry out adjustment of resuming classes；
H. crossbeam is installed: being lifted when crossbeam is installed using suitable crane, the sequence of transverse beam lifting and the installation of steel column are suitable
Sequence is identical, Xian Diao lower layer crossbeam, then hangs on a layer crossbeam；
I. crossbeam corrects: crossbeam correction includes the next steps:
1. Pass line adjustment: when one across i.e. two rows of crossbeam whole rigging out after, with a level (precision is in ± 3mm/Km) frame
On the platform on beam or specially set up, the pilot measurement of every beam both ends elevation is carried out, by the data weighted average of measurement, calculates one
Standard value (absolute altitude of this standard value meets tolerance), the size of adjustment required for calculating each point according to this standard value；
2. beam vertical degree corrects: hanging plumb bob from crane girder top flange and get off, measure the level at cotton rope to web or more two
Distance illustrates vertically, if the horizontal distance at two is different, to need to be adjusted if the horizontal distance at two is identical；
C. it connects and fastens: after carrying out passed examination to jointing everywhere, can be fastened and be welded, carry out
When installation, any mounting hole all cannot carry out reaming by cutting,
D. it welds: removing water, oxide skin, rust, the greasy dirt on place surface to be welded before weldering；Check that assembling and the surface of welding position are clear
The quality of reason is for example undesirable, answers reconditioning repair welding, can welding after qualified；Building site field joint preferably uses hammering method elimination to answer
Power when eliminating intermediate layer stress with hammering method, should use ball peen hammer or small vibrating tool to carry out, should not weld to root
The base material of seam, cap weld or weld groove edge is hammered, and welding needs anticorrosion with painting paint after completing；
E. priming paint repairing and finishing coat brushing: dirt, impurity, welding slag of steel structure surface etc. are cleaned out in surface treatment, and priming paint is repaired
Same paint should be used by mending, and pay attention to brushing uniformly, and finishing coat should be brushed after installation is complete, and type used should be with design one
It causes.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of storage tank supporting leg construction technology, it is characterised in that: the following steps are included:
A. storage tank supporting leg production process: when storage tank supporting leg is made the following steps are included:
A. basis is checked and accepted: basis is checked and accepted should be according to " vertical cylinder steel welds Storage Tank Construction and acceptance specification GB50128-
2005 " related clause carries out an acceptance inspection, and makes detailed basic record of acceptance, if any unqualified position should be to basic examination at
Subsequent operation can be carried out after reason is qualified；
B. unwrapping wire: being determined the centerline of every supporting leg installation site by construction drawing, is measured and is determined rim of a cup baseplane absolute altitude, and combines
Fashioned iron sectional dimension determines supporting leg bottom outer-edge dimension line, unwrapping wire and makes label with marking pen on corresponding rim of a cup baseplane；
C. the examination of materials: test basis " construction of National Standard of the People's Republic of China's structural steelwork and acceptance specification GJ05-
83 " related clause requires to carry out in, and meets the requirement of design document；
D. blanking: the truncation that can not there is crackle to be either greater than 1mm on fracture after cutting is completed, and should be by edge
Molten tumor and splash clean out, carry out the part of accurate cutting surface roughness can not be greater than 0.03mm, carry out machine
The part of tool cutting, and the deviation of preceding tangent line and number stockline is not greater than 2mm, and should be clean by deburred；
E. correct, bending and edge are processed: the steel surface after correction cannot have apparent concave surface and damage, surface scratch depth
It is not preferably greater than 0.5mm, common carbon structural steel and low-alloy structural steel, allows to heat and correct, heating temperature is forbidden to be more than just
Fiery temperature (900 DEG C), the low-alloy structural steel after heating correction must Slow cooling；
F. storage tank supporting leg docks: before assembling, iron rust of the connection surface within the scope of the every 30~50mm of side of weld seam, and burr and greasy dirt etc.
It must remove clean；Then in the welding for carrying out storage tank supporting leg；
G. sandblasting preservative treatment: storage tank supporting leg welding needs to carry out derusting by sandblasting after terminating, and then carries out rust preventive paint,
Priming paint is epoxy zinc rich primer when spray painting, and intermediate coat is epoxy micaceous iron anti-corrosive primer, and finishing coat is aliphatic polyurethane top coat, spray painting
210 μm of overall thickness >；
B. storage tank supporting leg lift process: when storage tank supporting leg is lifted the following steps are included:
A. the inspection before steel member installation: steel construction needs the stringent quality to steel construction to check after marching into the arena；
B. component mark marks: carrying out the mark of center line, elevation line before lifting to steel member, asymmetric component is also answered
Installation direction is marked, center of gravity or suspension centre should be marked out to large-scale component, mark can be used different from component coating process color
Marking is painted, is accomplished clear, accurate, eye-catching；
C. the setting of cable wind rope and anchoring: before starting lifting, it should first set cable wind rope and be anchored cable wind rope, due to just starting
The steel construction of lifting, before being fitted without support and corresponding connecting elements, individual component does not form a stable sky
Between system, therefore a certain number of cable wind ropes should be set before lifting, be fixed by certain anchoring facility, such as steel column
Lateral rigidity is poor, cable wind rope should be arranged in side after lifting, cable wind rope should use wirerope, be anchored on fixed building
Above, when unfixed place is fixed, ground anchor peg should be beaten on the ground, steel pipe can be used in ground anchor peg, it is necessary to tilt, depth
No less than 2.5 meters；
D. scaffold prepares: scaffolding height steel pipe type scaffold about concordant with storage tank stabilizer blade overhead height, to lift knot
Suspension hook is removed after beam；The scaffold for setting up completion cannot influence the lifting of column and in place；
E. bottom of a cup adjusts: being fixed temporarily for steel column needs to rely on the tapered tenon of rim of a cup card, referring to lever principle, is arranged at column bottom
One temporary support, temporary support requires that the weight of upper post and beam can be born and what is generated due to the adjustment of steel column upper end is waved push away
Power；Temporary support uses 10# channel steel welding fabrication, and length and width are 5mm bigger than column base plate size, and the position absolute altitude of support is in place
Afterwards, it drills in bottom of a cup four direction and is inserted into reinforcing bar, reinforcing bar is welded with support, then pours pea gravel concreten filling support and wall of cup
Between gap, the weight and thrust that concrete setting rear support is born can adequately pass to foundation platform；
F. steel column is installed: being carried out the installation of first steel column, is selected the loop wheel machine of safety to be lifted by crane according to the weight of steel column, in steel
Hang after wirerope is lifted to the vertical overhead of rim of a cup, be slowly declined in bottom of a cup support at top end, column bottom contacted with support after with
The two sides verticality for observing steel column, rapidly in rim of a cup along steel column surrounding card tapered steel tenon after two sides is vertical, and will
Steel tenon and steel column spot welding fix tightly, prevent sliding and loosen, while respectively setting a guy steel cable in steel column four direction,
Firm to tenon card, after guy steel cable stress, crane can slowly descend hook, and observation steel column is drawn without crane without loose after generation inclination
Hook, one-mast support lifting are completed；After first pillar completes lifting, the adjacent column for there are column braces is lifted immediately, equally uses crane
Column is hung to after column bottom contacts with support, separately use a lifting capacity for 40 tons of truck crane by column braces, tie-rod etc. by branch
Be hung to position, after blending bolt is tightened, adjacent pillars lifting is completed, formed association after the completion of lifting between two steel columns, steel column it is weak
Axis direction is stable, but strong two direction of axis still needs to set cable wind rope；
G. steel column corrects: steel column correction includes the next steps:
1. base for post absolute altitude: according to the physical length of steel column, the flatness at column bottom, the distance at the poly- column bottom in capital, the weight of steel column installation
Point is the absolute altitude guaranteed at the top of steel column, the distance of the preceding first measurement steel column top surface of lifting to steel column bottom, then according to this distance
The placement thickness for determining steel column foot backing plate, when needing to carry out steel plate to fill out pad, stack must not exceed three blocks of steel plates each time；
2. the alignment of cross hairs in length and breadth: before steel column installation, will be marked cross hairs in length and breadth on basis with theodolite, while steel
Four faces of column shaft mark the center line of steel column, and in the case that in steel column installation, crane does not break off relations, slowly fall steel
Column, make four face center lines being marked on steel column on the basis of the reticle alignment in length and breadth that marks, accomplish that line line intersects as far as possible；
3. the correction of shaft verticality: on the extended line of the cross hairs in length and breadth of steel column or slightly inclined position sets up two longitudes and latitudes
Instrument carries out squareness measurement, and the angle of theodolite and cross hairs in length and breadth should be less than 15 °, is carved using steel or elastic cable wind rope carries out
Correction after correction, unclamps cable wind rope and does not stress, then carry out adjustment of resuming classes；
H. crossbeam is installed: being lifted when crossbeam is installed using suitable crane, the sequence of transverse beam lifting and the installation of steel column are suitable
Sequence is identical, Xian Diao lower layer crossbeam, then hangs on a layer crossbeam；
I. crossbeam corrects: crossbeam correction includes the next steps:
1. Pass line adjustment: when one across i.e. two rows of crossbeam whole rigging out after, set up on beam or specially with a level frame
Platform on, carry out the pilot measurement of every beam both ends elevation, by the data weighted average of measurement, a standard value calculated, according to this
Standard value calculates the size adjusted required for each point；
2. beam vertical degree corrects: hanging plumb bob from crane girder top flange and get off, measure the level at cotton rope to web or more two
Distance illustrates vertically, if the horizontal distance at two is different, to need to be adjusted if the horizontal distance at two is identical；
C. it connects and fastens: after carrying out passed examination to jointing everywhere, can be fastened and be welded, carry out
When installation, any mounting hole all cannot carry out reaming by cutting,
D. it welds: checking that the quality of assembling and the removing surface of welding position is for example undesirable, answer reconditioning repair welding, qualified rear
It can welding；Building site field joint preferably uses hammering method to eliminate stress, when eliminating intermediate layer stress with hammering method, should use round end
Hand hammer or small vibrating tool carry out, and should not hammer to the base material of root run, cap weld or weld groove edge, weld
It connects completion and needs anticorrosion with painting paint later；
E. priming paint repairing and finishing coat brushing: dirt, impurity, welding slag of steel structure surface etc. are cleaned out in surface treatment, and priming paint is repaired
Same paint should be used by mending, and pay attention to brushing uniformly, and finishing coat should be brushed after installation is complete, and type used should be with design one
It causes.
2. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step A, should be incited somebody to action before blanking
The removings such as iron rust, greasy dirt in steel surface cutting region are clean.
3. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step A, when carrying out blanking,
The temperature of common carbon structural steel job site is lower than subzero 20 degrees Celsius, and low-alloy structural spot temperature is lower than subzero
It must not be sheared at 15 degrees Celsius and punching.
4. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step A, carry out correction bending
When, when common carbon structural steel spot temperature is lower than -12 DEG C lower than -16 DEG C, low-alloy structural steel spot temperature,
It must not gagging and cold change song.
5. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step A, when spray painting, interface
Position while welding two sides reserve the welding bead of 30~50mm, not paint, and welding is waited to complete, scale removal, after weld grinding
It paints again.
6. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step A, carry out spraying operation
When need to guarantee that the temperature of job site controls between 5 DEG C~38 DEG C, relative humidity can not be greater than 85%, rainy day or structure
When part surface condenses, spraying operation should not be carried out, and forbids to drench with rain at spraying in four hours after the spray application.
7. storage tank supporting leg construction technology according to claim 1, it is characterised in that: in the step D, removed before welding to be welded
Locate water, oxide skin, rust, the greasy dirt on surface.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110948183A (en) * | 2019-11-25 | 2020-04-03 | 南通振华重型装备制造有限公司 | Manufacturing method of upper support leg of tire crane |
| CN112414384A (en) * | 2019-08-03 | 2021-02-26 | 无锡交通建设工程集团有限公司 | Measuring and positioning device and measuring and positioning method for mounting bridge prefabricated stand column |
| CN113634473A (en) * | 2021-08-10 | 2021-11-12 | 山东望意阳海绵城市建设有限公司 | Construction process of steel structure bridge deck |
| CN115237007A (en) * | 2022-06-07 | 2022-10-25 | 浙江天成项目管理有限公司 | Remote monitoring method for intelligent building steel structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973012A (en) * | 2017-11-14 | 2018-05-01 | 中国电建集团西北勘测设计研究院有限公司 | A kind of tile powder material tank and shelf type installation method |
-
2019
- 2019-01-24 CN CN201910066590.0A patent/CN109882733A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973012A (en) * | 2017-11-14 | 2018-05-01 | 中国电建集团西北勘测设计研究院有限公司 | A kind of tile powder material tank and shelf type installation method |
Non-Patent Citations (3)
| Title |
|---|
| 刘洋: "《钢结构》", 31 January 2018, 北京理工大学出版社 * |
| 徐至钧、燕一鸣: "《大型立式圆柱形储液罐制造与安装》", 31 July 2003, 中国石化出版社 * |
| 王士川: "《建筑施工技术》", 31 May 2004, 北京冶金工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414384A (en) * | 2019-08-03 | 2021-02-26 | 无锡交通建设工程集团有限公司 | Measuring and positioning device and measuring and positioning method for mounting bridge prefabricated stand column |
| CN112414384B (en) * | 2019-08-03 | 2022-04-22 | 无锡交通建设工程集团有限公司 | Measuring and positioning device and measuring and positioning method for mounting bridge prefabricated stand column |
| CN110948183A (en) * | 2019-11-25 | 2020-04-03 | 南通振华重型装备制造有限公司 | Manufacturing method of upper support leg of tire crane |
| CN110948183B (en) * | 2019-11-25 | 2021-04-23 | 上海振华重工(集团)股份有限公司南通分公司 | Manufacturing method of upper support leg of tire crane |
| CN113634473A (en) * | 2021-08-10 | 2021-11-12 | 山东望意阳海绵城市建设有限公司 | Construction process of steel structure bridge deck |
| CN115237007A (en) * | 2022-06-07 | 2022-10-25 | 浙江天成项目管理有限公司 | Remote monitoring method for intelligent building steel structure |
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