CN107905182A - Large span gates of segmental shape installation accuracy control method - Google Patents
Large span gates of segmental shape installation accuracy control method Download PDFInfo
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- CN107905182A CN107905182A CN201711166270.XA CN201711166270A CN107905182A CN 107905182 A CN107905182 A CN 107905182A CN 201711166270 A CN201711166270 A CN 201711166270A CN 107905182 A CN107905182 A CN 107905182A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/40—Swinging or turning gates
- E02B7/42—Gates of segmental or sector-like shape with horizontal axis
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Abstract
The present invention provides a kind of large span gates of segmental shape installation accuracy control method, precision controlling is carried out in the installation process of large span gates of segmental shape, the installation of large span gates of segmental shape, which is included in after fist stage concrete pours, carries out surveying and locating process, track installation process, branch hinge installation procedure, gate flap installation procedure and water seal installation procedure；Branch hinge installation procedure includes the branch free bearing bolt installation procedure and support hinge device installation procedure carried out successively；Wherein, precision controlling is carried out using the positioning of box-shaped mould in branch free bearing bolt installation procedure.The present invention is in the installation process of large span gates of segmental shape, determine that reference for installation ensure that the precision during subsequent installation is precisely controlled by surveying and locating, and the installation accuracy by being cut with scissors to branch is accurately controlled, ensure the operating accuracy of gates of segmental shape, efficiently solve the problem of installation accuracy of the large span gates of segmental shape in installation process is unmanageable in the prior art.
Description
Technical field
The present invention relates to gate of hydropower station installation Technology field, more particularly to a kind of large span gates of segmental shape installation essence
Spend control method.
Background technology
In recent years, in hydropower project, gates of segmental shape with its keying quick and precisely, in power station the advantages of operational security
In be used widely, especially large span gates of segmental shape is overcoming transport difficult, after the difficult point such as yielding, mounting process also day
Attain maturation.In the installation process of gates of segmental shape, the precision of installation will be directly influenced during gates of segmental shape follow-up work
Operating condition and service life.And existing gates of segmental shape mounting technique, during large span gates of segmental shape is installed still
The problem of being so difficult to control there are installation accuracy.
The content of the invention
For above-mentioned technical problem existing in the prior art, the present invention provides a kind of large span gates of segmental shape installation essence
Control method is spent, the problem of installation accuracy of the large span gates of segmental shape in installation process is unmanageable can be efficiently solved.
The technical scheme is that：A kind of large span gates of segmental shape installation accuracy control method, in large span arc gate
Precision controlling is carried out in the installation process of door, the installation of the large span gates of segmental shape, which is included in after fist stage concrete pours, to be carried out
Surveying and locating process, track installation process, branch hinge installation procedure, gate flap installation procedure and water seal installation procedure, the branch hinge peace
Dress process includes the branch free bearing crab bolt installation procedure and support hinge device installation procedure carried out successively；
Wherein, the branch free bearing bolt installation procedure is to cut with scissors the pre-buried branch free bearing in bracket front end in fist stage concrete arc door branch
Fixing bolt is installed on plate, precision controlling is carried out using the positioning of box-shaped mould in installation process, specifically includes following steps：
(1) the box-shaped mould is made into the cross of bolt wherein simultaneously as mould datum level on mould datum level
Center and the laggard eleven punch 11 of contour line, and ensure that bolt is vertical with mould datum level；
The cross central line and vertical centerline of branch free bearing are discharged out on mould datum level according to bolt-center position, is made
For the foundation measured during installation；
(2) the branch hinge bracket front top edge in gate aperture both sides has the two of aperture both sides using total powerstation setting-out
H the axial coordinate datum mark A1 and datum mark A2 at a branch hinge center, ceiling hammer, two H axial coordinates of formation control respectively at A1, A2
Line, i.e., the H axial coordinates values of two H axial coordinate control lines H axial coordinate values with two branch hinge center of gate aperture both sides respectively
It is identical；
(3) two branch are cut with scissors to extended line and the gate pier surface of the line of centres using total powerstation in surveying and locating process
Intersecting point coordinate, on the gate pier side wall of aperture both sides, period is named as O1, O2 for setting-out respectively, and qin steel wire is used in this process by base
O1, O2 are connected on schedule, form branch hinge central axis；
(4) angle of box-shaped mould is adjusted to design load, any point ceiling hammer on mould datum level, and measure level
With vertical range, angle is scaled using trigonometric function；
(5) adjusting the position of box-shaped mould makes projection of the branch hinge central axis to mould datum level and the horizontal stroke on box-shaped mould
Overlapped to center line, and make branch hinge central axis parallel with the cross central line on box-shaped mould；
(6) make along the position of the cross central line direction adjustment box-shaped mould on box-shaped mould in vertical on box-shaped mould
Heart line and corresponding H axial coordinates control line are coplanar.
As preferred：The support hinge device installation procedure comprises the following steps：
(1) support hinge device is adjusted to gate flap full closing state, and by the movable end of support hinge device and fixing end temporarily into
Row fixation；
(2) it is adjusted after the branch free bearing of support hinge device fixing end to be penetrated to the bolt being soldered on branch free bearing plate, will
Discharge on the gate pier side wall of aperture both sides correspond to respectively datum mark O1, O2 and only elevation be more than datum mark O1, O2 O1 ', O2 '
Two datum marks are connected using qin steel wire, are formed in parallel with the branch hinge parallel lines of branch hinge central axis, the branch in branch free bearing both sides
Plumb bob is hung respectively on hinge parallel lines, and branch free bearing position is adjusted by tightening nut, perpendicular is cut with scissors central axis by branch, together
When by measuring branch free bearing both sides vertical plane degree, and at both sides shaft end center hang steel tape, utilize spirit level control both sides
Elevation, adjusts branch free bearing axis hole gradient.
Further：Followed the steps below after (2) the support hinge device installation procedure the step of：
(3) using the datum mark discharged at the bulkhead gate ground sill of downstream, theodolite review branch hinge center device to hole is used
Mouth center line is away from guarantee deviation is not more than 1mm.
As preferred：The track installation process includes the ground sill installation procedure and siding track installation procedure carried out successively；
Wherein, in ground sill installation procedure, the section welding of ground sill point 4 is embedded, installs and uses high-precision level and measures tune
It is whole, misplace at track combination and be not more than 1mm；
In siding track installation procedure, the section installation of siding track point 5, the gate slot where often saving siding track, which discharges, three groups of benchmark, three groups of bases
The accurate both ends for often saving siding track corresponding respectively and middle part are discharged, and every group of benchmark includes the projection base on gate pier side wall with branch hinge center
Make camber line, the reference pair of points chosen at different curvature radius value on schedule for the center of circle, siding track installation procedure specifically includes following step
Suddenly：
(1) will often save siding track to lift to corresponding gate slot, by measuring the sealing seat board center line often on section siding track to two
The distance of side base on schedule positions the section siding track；
(2) measured using messenger wire, the precision of high-precision theodolite review double check control siding track vertical plane degree.
As preferred：Installation accuracy control is included in gate flap, support arm lifting position fixing process in the gate flap installation procedure
Precision controlling in precision controlling and gate flap, support arm welding process；
To gate flap using merogenesis lifting installation successively from bottom to top in the gate flap installation procedure, in gate flap back side width
Shaped steel is arranged to prevent gate flap from being deformed during gate flap lifts in direction；
The temporary support of gate flap in gate flap upstream face by the way of temporary support is set up, or is used in ground sill and side
The mode of welding support iron block on rail；
For the temporary support of gate flap when by the way of welding support iron block on ground sill and siding track, support iron block is welded on door
In the orbital plane of blade face plate upstream side, away from panel 20mm, edge wedge block of jumping a queue is adjusted；
When lifting adjustment, gate flap center line is set to be aligned with orifice center line first, the adjustment of gate flap radius of curvature uses
Datum mark during track installation, passes through wedge block accurate adjustment of jumping a queue between support iron block and gate flap panel.
Further：Support arm is installed using upper lower branch arm loose mail, and lower branch arm first connects branch hinge end when lifting, connect gate flap afterwards
End, when being connected with gate flap, is first put into connecting plate and is fixed with gate flap bolt, then cuts off arm length direction surplus, adjustment welding
It is fixed, shear resisting board is installed after the completion of welding in both sides, is carried out after the completion of gate flap lifting where upper beam is treated in upper branch arm lifting, afterwards
Carry out support arm linking beam installation.
Further：In gate flap, support arm welding process, gate flap welding deformation is controlled by controlling following aspect：
(1) heat input
Using manual electric arc welding mode, before weldering welding rod through 300~350 DEG C of baking 1h, with insulation barrel with dry with；
According to heat input calculation formula：
E=IU η/V (1)
Calculate heat input；
In formula (1), E is heat input (J/cm)；I is welding current (A)；U is arc voltage (V)；V is speed of welding
(cm/s)；η is coefficient of thermal efficiency；
Welding current is determined according to core diameter, arc voltage is determined according to formula U=20+0.04 × I, ensures through welding
In the case of, speed of welding is controlled in more than 0.3cm/s；
(2) the welding bead number of plies
Using multi-layer welding, first layer to reduce heat input, while is welded with short arc with minor diameter welding rod bottoming, and
Constraint can be formed after the completion of one layer of weld seam to lower floor's weld seam, the welding number of plies is more, and deformation is smaller；
(3) welding sequence
Weld seam is divided 8 sections, is arranged even number welder, adopted by the welding of gate flap panel along its length using segmentation room for manoeuvre welding method
With point in symmetrical backstep welding complete, forbid from edge to middle welding, left and right sides welder is carried out at the same time work during welding
Industry, avoids the uneven stress of the gate flap as caused by the time difference and is deformed；
The welding of other various webs, partition plate and support arm butt weld, equally by even number welder from gate flap longitudinal center
Start synchronous, symmetrical, intersection, segmentation, fall back welding, ensure gate flap entirety uniform force.
Yet further：All weld seam welding are completed, and ultrasonic examination detection can be carried out by 24h, check welding matter
Amount, finally carries out repetition measurement to gate flap items size and position.
As preferred：In water seal installation procedure, first water seal is spliced on level land, then coordinates auger shell bolt with water seal pressing plate
Hole, finally on gate flap；
In installation process water seal flatness, control water seal design decrement are adjusted by adjusting water seal connection bolt.
Further：Water seal carries out printing opacity inspection after installation is complete, door body is adjusted to full off state, it is desirable to water seal and track
Sealing seat board must not have gap or light leakage phenomenon, otherwise be adjusted, untill no light leakage phenomenon.
The beneficial effects of the invention are as follows：The present invention pours in the installation process of large span gates of segmental shape in fist stage concrete
Surveying and locating is carried out after building, determines that reference for installation ensure that the precision during subsequent installation is precisely controlled, and lead to
Cross and the installation accuracy of branch hinge is accurately controlled, ensure the operating accuracy of gates of segmental shape, efficiently solve in the prior art
The problem of installation accuracy of the large span gates of segmental shape in installation process is difficult to control.
By preferable technical solution, have further the advantage that the present invention：
(1) track uses merogenesis embedding manner, is adjusted using high-precision theodolite and messenger wire conjunction measuring, both ensure that peace
Precision is filled, and adapts to Metal structure installation and civil construction cross-operation operating mode.
(2) branch free bearing plate and screw rod split Embedment and installation, avoid screw rod and occur in fist stage concrete casting process partially
Move, improve installation accuracy.Support hinge device integral hoisting is simultaneously once completed, and is reduced the input of hanging device, is saved the duration.
(3) in the installation of gate flap merogenesis, by the use of supporting iron block to be aided in as gate flap temporary support and adjustment, reduce material and disappear
Consumption and manually input, it is convenient and simple.More importantly once it is adjusted in place beneficial to gate flap, ensure that installation accuracy.
(4) postwelding nondestructive testing first-time qualification rate 100% is passed through by using the welding procedure after optimization, gate weld seam.
With the review of postwelding igfet gate off-gage phenomenon does not occur for the welding deformation monitoring in welding process.
(5) element project 20 is completed altogether in the four hole discharge gate dam Metal structure installation engineering of right bank of the application present invention,
Element project performance rating acceptable quality level 100%, acceptance rate 100%.By using above measure, gate is controlled well
Installation deviation and welding deformation, improve installation effectiveness, reduce production cost, ensure that the quality of engineering.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is gates of segmental shape installation procedure figure；
Fig. 2 is the arc door side arrangement figure of the embodiment of the present invention；
Fig. 3 is the siding track reference for installation arrangement schematic diagram of the embodiment of the present invention；
Fig. 4 is the branch hinge base point of installation 01,02 and aperture general plane arrangement schematic diagram of the embodiment of the present invention；
Fig. 5 is branch hinge base point of installation A1, O1, the arrangement schematic diagram of O1 ' in side-looking direction of the embodiment of the present invention；
Fig. 6 is branch hinge base point of installation A1, O1, the arrangement schematic diagram of O1 ' in the positive apparent direction of the embodiment of the present invention；
Fig. 7 is branch hinge base point of installation A2, O2, the arrangement schematic diagram of O2 ' in the positive apparent direction of the embodiment of the present invention；
Fig. 8 is branch hinge base point of installation A2, O2, the arrangement schematic diagram of O2 ' in side-looking direction of the embodiment of the present invention；
Fig. 9 is the branch free bearing bolt mounting structure schematic diagram of the embodiment of the present invention；
Figure 10 is the support hinge device structure diagram of the embodiment of the present invention；
Figure 11 is the schematic diagram of the branch hinge central axis and branch hinge parallel lines of the embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.
Therefore, the model of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention below
Enclose, but be merely representative of the selected embodiment of the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of protection of the invention.
An embodiment of the present invention provides a kind of large span gates of segmental shape installation accuracy control method, in large span gates of segmental shape
Installation process in carry out precision controlling, the installation of large span gates of segmental shape, which is included in measure after fist stage concrete pours, puts
Sample process, track installation process, branch hinge installation procedure, gate flap installation procedure and water seal installation procedure.
, must be in preparation of construction rank according to gates of segmental shape installation procedure (see Fig. 1) since gates of segmental shape installation requirement precision is high
The a set of accurate coordinate-systems of Duan Jianli, carry out surveying and locating process after fist stage concrete pours.
Three groups of benchmark that datum mark, orifice center line at following gate ground sills, the gate slot often where section siding track discharge
And datum mark A1, A2, O1, O2, O1 ', O2 ' etc. are discharged in surveying and locating process.
As shown in Figures 2 and 3, every group of benchmark that the gate slot where often saving siding track discharges includes cutting with scissors center in gate pier side with branch
Projection datum mark (i.e. datum mark O1 or O2) on wall makees camber line, a pair of of the benchmark chosen at different curvature radius value for the center of circle
Point.It was located at per reference pair of points on the same straight line in the center of circle.In the present embodiment, reference pair of points (such as Fig. 3 of every group of benchmark
In datum mark A and datum mark B) on the basis of branch hinge center on the gate pier side wall of arc door siding track gate slot both sides respectively with curvature
Radius R18300 and R19300 is drawn.
As shown in Fig. 5 to Fig. 8, datum mark A1 and datum mark A2 are discharged in the branch hinge bracket front end of gate aperture both sides respectively
Top edge, and identical with the H axial coordinate values at two branch hinge centers respectively (H axial coordinate values, refer in H as shown in Figure 4
The difference between any point on H axis and O points in axis, Z axis coordinate system, wherein being passed using 0 point as origin along H axis arrow forward directions
The H axial coordinates value of the point of increasing is positive number, is origin along the H axial coordinates value of the reverse incremental point of H axis arrow as negative using 0 point).Base
The application method of A1 and datum mark A2 are on schedule：Using total powerstation in the branch hinge bracket front top corner of gate aperture both sides
Place, respectively setting-out go out the datum mark identical with the H axial coordinate values at two branch hinge centers, are respectively designated as A1, A2.
As shown in Fig. 4 to Fig. 8, datum mark O1 and datum mark O2 distinguish setting-out on the gate pier side wall of aperture both sides, are two
Branch cuts with scissors the intersection point of line of centres extended line and gate pier metope.
The setting out method of datum mark O1 and datum mark O2 is：Using total powerstation by two branch cut with scissors the extended line of the line of centres with
The intersecting point coordinate on gate pier surface, on the gate pier side wall of aperture both sides, period is named as O1, O2 for setting-out respectively.
As shown in Fig. 5 to Fig. 8, datum mark O1 ' and datum mark O2 ' also distinguish setting-out on the gate pier side wall of aperture both sides, base
O1 ' is equal with the elevation of datum mark O2 ' on schedule, and corresponding release is high in the surface of datum mark O1 and datum mark O2, and only respectively
Journey is more than datum mark O1 and datum mark O2.
Surveying and locating work should all be required by the professional survey crew of higher level in strict accordance with detail of design, be selected high
Precision total powerstation, carry out reference for installation measurement and the setting-outs such as ground sill, siding track, aperture, branch hinge through big instrument and spirit level.And require one
Secondary setting-out is completed, and performs eye-catching mark with red paint, and safekeeping to every installment work completion acceptance terminates.
Track installation process includes the ground sill installation procedure and siding track installation procedure carried out successively.
Wherein, in ground sill installation procedure, the section welding of ground sill point 4 is embedded, installs and uses high-precision level and measures tune
It is whole, misplace at track combination and be not more than 1mm.
In siding track installation procedure, the section installation of siding track point 5.Gate slot where often saving siding track, which discharges, three groups of benchmark, three groups of bases
The accurate both ends for often saving siding track corresponding respectively and middle part are discharged.
Every group of benchmark is included with branch hinge center in concrete side wall projection datum mark (i.e. datum mark O1 or O2) for the center of circle
Make camber line, the reference pair of points chosen at different curvature radius value.Such as in the present embodiment, reference pair of points of every group of benchmark
(the datum mark A and datum mark B in such as Fig. 2) on the basis of branch hinge center gate slot both sides concrete side wall respectively with curvature half
Footpath R18300 and R19300 is drawn.
Center line is drawn in every section siding track sealing seat board.
Siding track installation procedure specifically includes following steps：
(1.1) it will often save siding track to lift to corresponding gate slot, be arrived by measuring the sealing seat board center line often on section siding track
The distance of both sides datum mark positions the section siding track.
(1.2) measured using messenger wire, the precision of high-precision theodolite review double check control siding track vertical plane degree.
After the completion of siding track installation procedure, gate slot second stage concrete is poured.
Branch hinge installation procedure includes the branch free bearing bolt installation procedure and support hinge device installation procedure carried out successively.
Wherein, branch free bearing bolt installation procedure is to be cut with scissors in fist stage concrete arc door branch on the pre-buried branch free bearing plate in bracket front end
Fixing bolt is installed, precision controlling is carried out using the positioning of box-shaped mould in installation process.The structure of box-shaped mould such as Fig. 9 institutes
Show.
Branch free bearing bolt installation procedure specifically includes following steps：
(2.1) box-shaped mould is made in the cross of bolt wherein simultaneously as mould datum level on mould datum level
The heart and the laggard eleven punch 11 of contour line, and ensure that bolt is vertical with mould datum level；
The cross central line and vertical centerline of branch free bearing are discharged out on mould datum level according to bolt-center position, is made
For the foundation measured during installation.
(2.2) the difference ceiling hammer at datum mark A1 and datum mark A2, forms two H axial coordinates control lines (such as Fig. 5 to figure
Shown in 8), the H axial coordinates value of two H axial coordinate control lines cuts with scissors the H axis seat at center with two branch of gate aperture both sides respectively
Scale value is identical.
(2.3) two datum marks of O1, O2 are connected using qin steel wire, forms branch and cut with scissors central axis (such as institute in Fig. 4 and Figure 11
Show).
(2.4) angle of box-shaped mould and horizontal plane is adjusted to design load, any point ceiling hammer on mould datum level,
And horizontal and vertical range is measured, it is scaled angle using trigonometric function.
(2.5) projections of the branch hinge central axis O1-O2 to mould datum level and the cross central line weight on box-shaped mould are made
Close, and make branch hinge central axis O1-O2 parallel with the cross central line on box-shaped mould.
In practical operation, measured using right angle Steel Ruler.By a right-angle side a of right angle Steel Ruler and mould benchmark
Face paste closes (another right-angle side b of right angle Steel Ruler is perpendicular to mould datum level at this time), on another right-angle side b and box-shaped mould
Cross central line it is vertical and intersecting, while ensure box-shaped mould angle with horizontal plane it is constant on the premise of rotating mould, make
The right-angle side b of right angle Steel Ruler cuts with scissors central axis O1-O2 phases at any point on by mould cross central line with branch
Hand over, and ensure that the distance of intersection point to mould cross central line is equal.
(2.6) make along the position of the cross central line direction adjustment box-shaped mould on box-shaped mould vertical on box-shaped mould
Center line and corresponding H axial coordinates control line are coplanar.
In practical operation, measured using right angle Steel Ruler.By a right-angle side a of right angle Steel Ruler and mould benchmark
Face paste closes (another right-angle side b of right angle Steel Ruler is perpendicular to mould datum level at this time), on another right-angle side b and box-shaped mould
Vertical centerline it is vertical and intersecting, while ensure box-shaped mould angle with horizontal plane it is constant on the premise of, along box-shaped mould
On cross central line direction move moulds, intersect right-angle side b and H the axial coordinate control line of right angle Steel Ruler.
In step (2.5) and (2.6), during the adjustment for carrying out box-shaped mould, ensure mould datum level and horizontal plane
Angle is constant.
(2.7) after the completion of the adjustment of box-shaped die location, screw rod and branch free bearing plate are welded and fixed.
After welding is completed, mould is removed, installation is complete for screw rod.
The structure of support hinge device is as shown in Figure 10.Support hinge device installation procedure comprises the following steps：
(3.1) support hinge device is adjusted to gate flap full closing state, and the movable end of support hinge device and fixing end is interim
It is fixed firmly.
(3.2) it is adjusted after the branch free bearing of support hinge device fixing end to be penetrated to the bolt being soldered on branch free bearing plate,
Two datum marks of O1 ', O2 ' are connected using qin steel wire, the branch for being formed in parallel with branch hinge central axis cuts with scissors parallel lines (in such as Figure 11
It is shown), plumb bob is hung respectively on the branch hinge parallel lines of branch free bearing both sides, and branch free bearing position is adjusted by tightening nut, makes lead
Plumb line cuts with scissors central axis by branch, while hangs steel by measuring branch free bearing both sides vertical plane degree, and at both sides shaft end center
Tape measure, controls both sides elevation using spirit level, adjusts branch free bearing axis hole gradient.
(3.3) using the datum mark discharged at the bulkhead gate ground sill of downstream, theodolite review branch hinge center pair is used
Orifice center line-spacing, ensures that deviation is not more than 1mm.
(3.4) after the completion of support hinge device position adjustment, branch hinge bracket second stage concrete is poured.
Installation accuracy control includes the precision controlling and door in gate flap, support arm lifting position fixing process in gate flap installation procedure
Precision controlling in leaf, support arm welding process.
In the present embodiment, gate flap is 7 sections, and installation order is：First segment gate flap (gate flap where lower main beam) --- lower
Arm --- the second section door leaf, the 3rd section door leaf, the 4th section door leaf (gate flap where upper beam) --- upper branch arm and linking beam ---
5th gate flap, the 6th gate flap.
To gate flap using merogenesis lifting installation successively from bottom to top in gate flap installation procedure, in gate flap back side width
Shaped steel is arranged to prevent gate flap from being deformed during gate flap lifts.
The temporary support of gate flap in gate flap upstream face by the way of temporary support is set up, or is used in ground sill and side
The mode of welding support iron block on rail.
In the present embodiment, the temporary support of gate flap is by the way of the welding support iron block on ground sill and siding track.Branch iron brace
Block welding is in the orbital plane of gate flap panel upstream side, and away from panel 20mm, edge wedge block of jumping a queue is adjusted.
When lifting adjustment, gate flap center line is set to be aligned with orifice center line first, the adjustment of gate flap radius of curvature uses
Datum mark during track installation, passes through wedge block accurate adjustment of jumping a queue between support iron block and gate flap panel.
Support arm is installed using upper lower branch arm loose mail, and lower branch arm first connects branch hinge end when lifting, rear to connect gate flap end.With gate flap
During connection, first it is put into connecting plate and is fixed with gate flap bolt, then cut off arm length direction surplus, adjustment is welded and fixed, welding
After the completion of both sides install shear resisting board, upper branch arm lifting treats the 4th section door leaf lifting after the completion of carry out, afterwards carry out support arm link
Beam is installed.
In gate flap, support arm welding process, gate flap welding deformation is controlled by controlling following aspect：
(4.1) heat input
Using manual electric arc welding mode, selection of electrodes E5015 (trade mark J507) low hydrogen sodium electrode.To reduce arc line energy
Amount, diameter selection 3.2mm, 4.0mm, short arc operation during welding, is advisable with string(er) bead.Welding rod is through 300~350 DEG C of bakings before weldering
1h, with insulation barrel with dry with.
According to heat input calculation formula：
E=IU η/V (1)
Calculate heat input.
In formula (1), E is heat input (J/cm)；I is welding current (A)；U is arc voltage (V)；V is speed of welding
(cm/s)；η is coefficient of thermal efficiency.
Welding current is determined according to core diameter, arc voltage is determined according to formula U=20+0.04 × I, ensures through welding
In the case of, speed of welding is controlled in more than 0.3cm/s.
(4.2) the welding bead number of plies
Using multi-layer welding, first layer to reduce heat input, while is welded with short arc with minor diameter welding rod bottoming, and
Constraint can be formed after the completion of one layer of weld seam to lower floor's weld seam, the welding number of plies is more, and deformation is smaller.
(4.3) welding sequence
Weld seam is divided 8 sections, is arranged even number welder, adopted by the welding of gate flap panel along its length using segmentation room for manoeuvre welding method
With point in symmetrical backstep welding complete, forbid from edge to middle welding, left and right sides welder is carried out at the same time work during welding
Industry, avoids the uneven stress of the gate flap as caused by the time difference and is deformed；
The welding of other various webs, partition plate and support arm butt weld, equally by even number welder from gate flap longitudinal center
Start synchronous, symmetrical, intersection, segmentation, fall back welding, ensure gate flap entirety uniform force.
All weld seam welding are completed, and can be carried out ultrasonic examination detection by 24h, be checked welding quality, on the door finally
Leaf items size and position carry out repetition measurement.
In water seal installation procedure, first water seal is spliced on level land, then coordinates drill bolt hole with water seal pressing plate, is finally installed
On gate flap；
In installation process water seal flatness, control water seal design decrement are adjusted by adjusting water seal connection bolt.
Water seal carries out printing opacity inspection after installation is complete, and door body is adjusted to full off state, it is desirable to water seal and track sealing seat board
Must not there are gap or light leakage phenomenon, to be otherwise adjusted, untill no light leakage phenomenon.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.
Claims (10)
1. a kind of large span gates of segmental shape installation accuracy control method, carries out precision in the installation process of large span gates of segmental shape
Control, the installation of the large span gates of segmental shape, which is included in after fist stage concrete pours, carries out surveying and locating process, track installation
Process, branch hinge installation procedure, gate flap installation procedure and water seal installation procedure, it is characterised in that：The branch hinge installation procedure includes
The branch free bearing bolt installation procedure and support hinge device installation procedure carried out successively；
Wherein, the branch free bearing bolt installation procedure is to be cut with scissors in fist stage concrete arc door branch on the pre-buried branch free bearing plate in bracket front end
Fixing bolt is installed, precision controlling is carried out using the positioning of box-shaped mould in installation process, specifically includes following steps：
(1) the box-shaped mould is made into the cross searching of bolt wherein simultaneously as mould datum level on mould datum level
And the laggard eleven punch 11 of contour line, and ensure that bolt is vertical with mould datum level；
The cross central line and vertical centerline of branch free bearing are discharged out on mould datum level according to bolt-center position, as peace
The foundation measured during dress；
(2) branch in gate aperture both sides, which cuts with scissors bracket front top edge, two branch of aperture both sides using total powerstation setting-out
H the axial coordinate datum mark A1 and datum mark A2 at hinge center, the difference ceiling hammer at A1, A2, form two H axial coordinate control lines,
The H axial coordinates value of i.e. two H axial coordinate control lines cuts with scissors the H axial coordinate value phases at center with two branch of gate aperture both sides respectively
Together；
(3) two branch are cut with scissors to the extended line and the intersection point on gate pier surface of the line of centres using total powerstation in surveying and locating process
Coordinate, on the gate pier side wall of aperture both sides, period is named as O1, O2 for setting-out respectively, and qin steel wire is used in this process by datum mark
O1, O2 are connected, and form branch hinge central axis；
(4) adjust box-shaped mould angle to design load, any point ceiling hammer on mould datum level, and measure it is horizontal with it is vertical
Straight distance, angle is scaled using trigonometric function；
(5) adjust in the transverse direction that the position of box-shaped mould makes in projection and box-shaped mould of the branch hinge central axis to mould datum level
Heart line overlaps, and makes branch hinge central axis parallel with the cross central line on box-shaped mould；
(6) vertical centerline on box-shaped mould is made along the position of the cross central line direction adjustment box-shaped mould on box-shaped mould
It is coplanar with corresponding H axial coordinates control line.
2. large span gates of segmental shape installation accuracy control method according to claim 1, it is characterised in that：The branch hinge dress
Installation procedure is put to comprise the following steps：
(1) support hinge device is adjusted to gate flap full closing state, and the movable end of support hinge device and fixing end is consolidated temporarily
It is fixed firm；
(2) it is adjusted, will discharges after the branch free bearing of support hinge device fixing end to be penetrated to the bolt being soldered on branch free bearing plate
In on the gate pier side wall of aperture both sides correspond to respectively datum mark O1, O2 and only elevation be more than datum mark O1, O2 O1 ', O2 ' two
Datum mark is connected using qin steel wire, is formed in parallel with the branch hinge parallel lines of branch hinge central axis, and the branch hinge in branch free bearing both sides is flat
Plumb bob is hung on line respectively, branch free bearing position is adjusted by tightening nut, perpendicular is cut with scissors central axis by branch, is led at the same time
Measurement branch free bearing both sides vertical plane degree is crossed, and steel tape is hung at both sides shaft end center, both sides elevation is controlled using spirit level,
Adjust branch free bearing axis hole gradient.
3. large span gates of segmental shape installation accuracy control method according to claim 2, it is characterised in that：In support hinge device
Followed the steps below after the step of installation procedure (2)：
(3) using the datum mark discharged at the bulkhead gate ground sill of downstream, center is cut with scissors in aperture using theodolite review branch
Heart line-spacing, ensures that deviation is not more than 1mm.
4. large span gates of segmental shape installation accuracy control method according to claim 1, it is characterised in that：The track peace
Dress process includes the ground sill installation procedure and siding track installation procedure carried out successively；
Wherein, in ground sill installation procedure, the section welding of ground sill point 4 is embedded, installs and uses high-precision level and measures adjustment, rail
Dislocation is not more than 1mm at road combination；
In siding track installation procedure, the section installation of siding track point 5, the gate slot where often saving siding track, which discharges, three groups of benchmark, three groups of basis points
The both ends and middle part that Dui Ying not often save siding track are discharged, and every group of benchmark includes the projection datum mark on gate pier side wall with branch hinge center
Make camber line, the reference pair of points chosen at different curvature radius value for the center of circle, siding track installation procedure specifically includes following steps：
(1) will often save siding track to lift to corresponding gate slot, by measuring the sealing seat board center line often on section siding track to two side bases
Distance on schedule positions the section siding track；
(2) measured using messenger wire, the precision of high-precision theodolite review double check control siding track vertical plane degree.
5. large span gates of segmental shape installation accuracy control method according to claim 1, it is characterised in that：The gate flap peace
Filling installation accuracy control in process includes gate flap, the precision controlling in support arm lifting position fixing process and gate flap, support arm welding process
In precision controlling；
To gate flap using merogenesis lifting installation successively from bottom to top in the gate flap installation procedure, in gate flap back side width
Shaped steel is arranged to prevent gate flap from being deformed during gate flap lifts；
The temporary support of gate flap in gate flap upstream face by the way of temporary support is set up, or is used on ground sill and siding track
The mode of welding support iron block；
For the temporary support of gate flap when by the way of welding support iron block on ground sill and siding track, support iron block is welded on gate flap face
In the orbital plane of plate upstream side, away from panel 20mm, edge wedge block of jumping a queue is adjusted；
When lifting adjustment, gate flap center line is set to be aligned with orifice center line first, the adjustment of gate flap radius of curvature uses track
Datum mark during installation, passes through wedge block accurate adjustment of jumping a queue between support iron block and gate flap panel.
6. large span gates of segmental shape installation accuracy control method according to claim 5, it is characterised in that：Support arm is using upper
Lower branch arm loose mail is installed, and lower branch arm first connects branch hinge end when lifting, rear to connect gate flap end, when being connected with gate flap, is first put into connection
Plate is simultaneously fixed with gate flap bolt, then cuts off arm length direction surplus, and adjustment is welded and fixed, and in both sides, installation is anti-after the completion of welding
Shear, carries out after the completion of gate flap lifting where upper beam is treated in upper branch arm lifting, carries out support arm linking beam installation afterwards.
7. large span gates of segmental shape installation accuracy control method according to claim 6, it is characterised in that：Gate flap, support arm
In welding process, gate flap welding deformation is controlled by controlling following aspect：
(1) heat input
Using manual electric arc welding mode, before weldering welding rod through 300~350 DEG C of baking 1h, with insulation barrel with dry with；
According to heat input calculation formula：
E=IU η/V (1)
Calculate heat input；
In formula (1), E is heat input (J/cm)；I is welding current (A)；U is arc voltage (V)；V is speed of welding (cm/
s)；η is coefficient of thermal efficiency；
Welding current is determined according to core diameter, arc voltage is determined according to formula U=20+0.04 × I, ensures the situation of through welding
Under, speed of welding is controlled in more than 0.3cm/s；
(2) the welding bead number of plies
Using multi-layer welding, first layer to reduce heat input, while is welded with short arc with minor diameter welding rod bottoming, and first layer
Constraint can be formed after the completion of weld seam to lower floor's weld seam, the welding number of plies is more, and deformation is smaller；
(3) welding sequence
Weld seam is divided 8 sections, is arranged even number welder using segmentation room for manoeuvre welding method by the welding of gate flap panel along its length, using point
In symmetrical backstep welding complete, forbid from edge to middle welding, left and right sides welder is carried out at the same time operation during welding, keeps away
Exempt from the uneven stress of the gate flap as caused by the time difference and be deformed；
The welding of other various webs, partition plate and support arm butt weld, equally by even number welder since gate flap longitudinal center
Synchronous, symmetrical, intersection, segmentation, fall back welding, ensures gate flap entirety uniform force.
8. large span gates of segmental shape installation accuracy control method according to claim 7, it is characterised in that：All weld seam welderings
Connect completion, can carry out ultrasonic examination detection by 24h, check welding quality, finally to gate flap items size and position into
Row repetition measurement.
9. large span gates of segmental shape installation accuracy control method according to claim 1, it is characterised in that：Water seal erector
In sequence, first water seal is spliced on level land, then coordinates drill bolt hole with water seal pressing plate, finally on gate flap；
In installation process water seal flatness, control water seal design decrement are adjusted by adjusting water seal connection bolt.
10. large span gates of segmental shape installation accuracy control method according to claim 9, it is characterised in that：Water seal is installed
After the completion of carry out printing opacity inspection, door body is adjusted to full off state, it is desirable to which water seal and track sealing seat board must not have gap or printing opacity
Phenomenon, otherwise will be adjusted, untill no light leakage phenomenon.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109084717A (en) * | 2018-07-23 | 2018-12-25 | 中国葛洲坝集团三峡建设工程有限公司 | Measure the device and method of radial gate support free bearing center mileage |
| CN109967975A (en) * | 2019-03-13 | 2019-07-05 | 中国葛洲坝集团机械船舶有限公司 | The method of construction of large-scale floating ship service machine |
| CN110119563A (en) * | 2019-05-07 | 2019-08-13 | 广东宏大欣电子科技有限公司 | A kind of gates of segmental shape aperture calculation method |
| CN110219286A (en) * | 2019-06-14 | 2019-09-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | A kind of light-weighted corrugated plating gate |
| CN111691374A (en) * | 2020-06-30 | 2020-09-22 | 广东江海机电工程有限公司 | Installation method of multi-hinge gate |
| CN112065075A (en) * | 2020-09-07 | 2020-12-11 | 中建八局科技建设有限公司 | Positioning and paying-off method for sidelines with irregular structures |
| CN112921941A (en) * | 2021-02-22 | 2021-06-08 | 中国葛洲坝集团机械船舶有限公司 | Floating type access door water seal replacing method |
| CN115302245A (en) * | 2022-07-26 | 2022-11-08 | 浙江江能建设有限公司 | Large-span gate unit-by-unit assembling process |
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| CN106759155A (en) * | 2017-02-28 | 2017-05-31 | 中国葛洲坝集团机械船舶有限公司 | A kind of gates of segmental shape installation method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084717A (en) * | 2018-07-23 | 2018-12-25 | 中国葛洲坝集团三峡建设工程有限公司 | Measure the device and method of radial gate support free bearing center mileage |
| CN109084717B (en) * | 2018-07-23 | 2021-03-09 | 中国葛洲坝集团三峡建设工程有限公司 | Device and method for measuring central mileage of radial gate hinge seat |
| CN109967975A (en) * | 2019-03-13 | 2019-07-05 | 中国葛洲坝集团机械船舶有限公司 | The method of construction of large-scale floating ship service machine |
| CN110119563A (en) * | 2019-05-07 | 2019-08-13 | 广东宏大欣电子科技有限公司 | A kind of gates of segmental shape aperture calculation method |
| CN110119563B (en) * | 2019-05-07 | 2021-10-12 | 广东宏大欣电子科技有限公司 | Radial gate opening degree calculation method |
| CN110219286A (en) * | 2019-06-14 | 2019-09-10 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | A kind of light-weighted corrugated plating gate |
| CN111691374A (en) * | 2020-06-30 | 2020-09-22 | 广东江海机电工程有限公司 | Installation method of multi-hinge gate |
| CN112065075A (en) * | 2020-09-07 | 2020-12-11 | 中建八局科技建设有限公司 | Positioning and paying-off method for sidelines with irregular structures |
| CN112921941A (en) * | 2021-02-22 | 2021-06-08 | 中国葛洲坝集团机械船舶有限公司 | Floating type access door water seal replacing method |
| CN115302245A (en) * | 2022-07-26 | 2022-11-08 | 浙江江能建设有限公司 | Large-span gate unit-by-unit assembling process |
| CN115302245B (en) * | 2022-07-26 | 2024-03-22 | 浙江江能建设有限公司 | Large-span gate sub-unit assembly process |
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