CN107253026A - A kind of multidirectional four anchor heads overall steel anchor beam preparation method - Google Patents
A kind of multidirectional four anchor heads overall steel anchor beam preparation method Download PDFInfo
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- CN107253026A CN107253026A CN201710484745.3A CN201710484745A CN107253026A CN 107253026 A CN107253026 A CN 107253026A CN 201710484745 A CN201710484745 A CN 201710484745A CN 107253026 A CN107253026 A CN 107253026A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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Abstract
The present invention relates to the multidirectional four anchor heads overall steel anchor beam preparation method of one kind, the preparation method comprises the following steps:(1)Web unit makes;(2)Bottom board unit makes;(3)Anchor plate makes;(4)Anchor head unit group is welded;(5)Web unit is assembled with anchor head unit;(6)Bottom board unit is assembled;(7)Other feature boards are assembled.The advantage of the invention is that:The multidirectional four anchor heads overall steel anchor beam preparation method of the present invention, it is broadly divided into the making of web unit, bottom board unit making, anchor plate is made, anchor head unit group is welded, web unit and the assembling of anchor head unit, bottom board unit are assembled and the assembling of other feature boards, manufacturing process is reasonable, ensure workmanship and assembly welding smoothly, and the preparation method has the advantages that preparation method is simple and convenient to operate and precision is high.
Description
Technical field
The invention belongs to bridge manufacturing technology field, more particularly to a kind of multidirectional four anchor heads overall steel anchor beam preparation method.
Background technology
With developing rapidly for social economy, the pressure of land transportation is increasingly highlighted, in order to solve this pressure, largely
The project such as railway, highway build imperative, for the great rivers passed through across road, the bridge of large span
Using certainty is tended to, people are also designed in the structure of the bridge to different distance.
In the bridge that the present invention is studied, main bridge is the double rope face Low Towers steel case steel truss combination girder stayed-cable bridges of double tower, total length
1234.6m, bridge floor uses double layer design, and upper strata is 8 lane roads, and lower floor is four-track line.Span is arranged as:(99.3+238+
588+224+85.3)M, girder upper strata be plate girder combine, lower floor be steel case Combined steel truss beam, triangular form truss, two panels main truss, on
Layer purlin centre-to-centre spacing 33.8m, lower floor's purlin centre-to-centre spacing is 38m, the high 15.0m in main truss purlin, panel length 14m.Full-bridge does not set horizontal-associate, only exists
Board-like portal frame is set at fulcrum, suspension cable is anchored in lower edge main truss rod member.Because this bridge Cable power is big, cable-pylon anchorage zone is adopted
The mode being combined with steel anchor beam anchor-hold system with prestress anchorage system, steel anchor beam is used to balance the layback of construction stage two
The dead load cable tension of rope so that most drag-line horizontal pulls in this stage are not acted directly on Concrete-filled steel tube.Meanwhile,
Due to the particularity of this bridge, from multidirectional four anchor heads overall steel anchor beam, and the steel anchor beam for being currently used for bridge is generally double anchors
Head steel anchor beam, as shown in figure 1, the Double-anchor-head steel anchor beam is by web 1,, bottom plate 2,, top plate flange plate 3,, web stiffener 4,、
Internal partition 5,, supporting plate 6,, stiffener 7 under anchor,With anchor slab 8,Constitute, according to the design feature of steel anchor beam, web when steel anchor beam makes
1,And stiffener 7 under anchor,Unit is made, other components take the side of the overall package on jig frame special after part blanking, machining
Formula is carried out;But the manufacture craft is not particularly suited for the making of multidirectional four anchor heads overall steel anchor beam.
Therefore it is badly in need of developing the multidirectional four anchor heads overall steel anchor beam of bridge that a kind of preparation method is simple and convenient to operate and precision is high
Preparation method, through retrieval, does not find and same or analogous technical scheme of the invention.
The content of the invention
It is simple and convenient to operate the technical problem to be solved in the present invention is to provide a kind of preparation method and bridge that precision is high is multidirectional
Four anchor head overall steel anchor beam preparation methods.
In order to solve the above technical problems, the technical scheme is that:A kind of multidirectional four anchor heads overall steel anchor beam making side
Method, its innovative point is:The preparation method comprises the following steps:
(1)Web unit makes:Digital control flame accurate cutting is used to the steel plate of blanking, in the two ends symmetric figure of steel plate one side
The inclined-plane of Cheng Youyu steel plates two ends linking, then with catching up with trigger leveling, strict control plane degree≤0.3mm, then to being cut with
The side on inclined-plane carries out retaining wall on slope, and then is centrally formed an arc groove in the side with inclined-plane, with arc slope
On the basis of the axis of mouth steel plate and machined flange line, the axis line position with scriber in steel plate marks a point center line, in steel plate
Two sides on mark anchor head assembling position line also drawn on the bolt hole position line, the steel plate, and anchor head assembling position line with
The both sides of arc groove are be arranged in parallel, and welding contracted quantity need to be considered during line;Finally, bored at the bolt hole position line with card model
Tumbler hole, forms web unit;
(2)Bottom board unit makes:The steel plate of blanking is punched out, rectangular opening is provided with the Central Symmetry of steel plate, and mark steel
Plate center line, then using digital control flame accurate cutting, inverted trapezoidal groove is symmetrically arranged with the both sides with rectangular opening steel plate,
And it is formed with four symmetrically arranged elliptical apertures with inclination angle in the two ends cutting of steel plate;By steel plate level when elliptical aperture is cut
Be placed on cutting stand on, carefully adjustment elliptical aperture long axis centerline it is parallel with trolley track, elliptical aperture short axle center line with greatly
Car parallel track, its error amount≤1mm will cut the cutting of tool tuyere tilt alpha angle completion elliptical aperture;Then with catching up with trigger leveling,
Strict control plane degree≤0.3mm, forms bottom board unit;
(3)Anchor plate makes:Numerical control cutting is carried out to the steel plate of blanking, then with catching up with trigger leveling, strict control plane degree≤
0.3mm, is then machined out plane, and bores at the center of steel plate a circular hole, then marks anchoring part plate position line, returns sample
Punching, forms anchor plate;
(4)Anchor head unit group is welded:Produce bearing plate, the round-meshed anchoring part plate in center and side and carry half elliptic hole
Anchor head dividing plate, and abutting edge is processed, the then precise scoring lines assembling on anchor head machining platform, i.e., first by a bearing plate and anchor
Seat board is assembled, it is ensured that perpendicularity≤0.5mm of bearing plate and anchoring part plate, then by anchor head dividing plate and bearing plate and anchoring part plate
Assembled, it is ensured that perpendicularity≤0.5mm of anchor head dividing plate and both bearing plate and anchoring part plate, then by another bearing plate and anchor head
Dividing plate and anchoring part plate are assembled, it is ensured that perpendicularity≤0.5mm of bearing plate and both anchor head dividing plate and anchoring part plate, are formed " ∏ "
Shape anchor head unit;After being completed with model detect perpendicularity, it is qualified after use CO2Gas shielded arc welding symmetrical welding, and pressure-bearing
Penetration groove angle welding between plate and anchor head dividing plate and anchoring part plate uses reversible deformation with Reducing distortion;
(5)Web unit is assembled with anchor head unit:One web unit is placed on platform, drawn when strictly being made by web unit
Anchor head assembling position line assembles anchor head unit, and another piece of web unit is then assembled again, rear CO is completed2Gas shielded arc welding pair
Claim the melt-through weld between welding web unit and anchor head unit, finally repaired, form web and anchor head assembly;
(6)Bottom board unit is assembled:Bottom board unit is placed on platform, then by step(5)It is middle finishing meet require web with
Anchor head assembly is assembled in bottom board unit, and two web units is symmetricly set on the both sides of rectangular opening in bottom board unit, so
There is end board in bottom board unit over-assemble afterwards, end board is respectively assembled in the outer end of anchor head unit, then in adjacent two web
Some pieces of internal partitions are assembled between anchor head assembly, for controlling adjacent two web to dehisce size, it is ensured that in two webs add
Dividing plate spacing tolerance is 0~+1, while ensureing ellipse of the semiellipse hole center with carrying inclination angle in bottom board unit in anchor head unit
Hole center is with anchor head unit center line;Simultaneously examine both sides anchoring part plate hole centre-to-centre spacing, through specially examine it is qualified after, using CO2Gas
Body protection weldering symmetrical welding, strict control deformation is welded on special welding fetalism, it is to avoid bottom plate produces angular deformation;
(7)Other feature boards are assembled:It is assembled with respectively the bottom of parallel between the outside of web unit and middle two webs unit
The top plate of plate, and several outside stiffeners perpendicular to bottom plate are assembled between lateral roof and bottom plate, then in anchor list
CO is used on anchoring part plate in member2Gas shielded arc welding symmetrical welding anchor plate, makes the circular hole on anchor plate and the circle on anchoring part plate
Hole is overlapped, and the upper surface of the bearing plate on anchor unit uses CO2Gas shielded arc welding symmetrical welding has anchor beam stiffener, is formed
One multidirectional four anchor heads overall steel anchor beam.
Further, the step(1)Middle anchor head assembling position line is marked simultaneously with the bolt hole position line.
Further, the CO2During gas shielded arc welding symmetrical welding, preheating temperature is 60~100 DEG C, heat range >=
Temperature is 60~200 DEG C between 100mm, road.
The advantage of the invention is that:
(1)The multidirectional four anchor heads overall steel anchor beam preparation method of the present invention, be broadly divided into that web unit makes, bottom board unit makes,
Anchor plate is made, anchor head unit group is welded, web unit and the assembling of anchor head unit, bottom board unit assembling and other feature boards are assembled,
Manufacturing process is reasonable, it is ensured that workmanship and assembly welding are smooth;
Wherein, web is the crucial stress part of anchor case, and the present invention uses digital control flame accurate cutting, then precise scoring lines processing side
The angle and anchor point centre coordinate of anchor head unit, deviation allowed band is locked in by precise scoring lines by the process of edge
It is interior, and then anchor case overall package precision can be improved;
Bottom plate is also one of important part in steel anchor beam as web, and what the bottom plate made control is the phase of four elliptical apertures
To position dimension, because numerical control cutting machine can not realize that four elliptical apertures with inclination angle are cut simultaneously, drawn for this using accurate
The method of cutting is programmed after line respectively, and then the degree of tilt and accuracy of elliptical aperture can be ensured;Meanwhile, according to list during web group pair
Part institute
Line assembling, centre sets internal partition during assembling, is easy to the concentricity in two web center lines and hole;Thus the preparation method
Have the advantages that preparation method is simple and convenient to operate and precision is high;
(2)The multidirectional four anchor heads overall steel anchor beam preparation method of the present invention, wherein, web is anchor
The crucial stress part of case, thus in line, anchor head assembling position line is marked simultaneously with the bolt hole position line, is reduced
Secondary line error, is conducive to improving assembly precision and shortens the manufacturing cycle;
(3)The multidirectional four anchor heads overall steel anchor beam preparation method of the present invention, wherein, CO2During gas shielded arc welding symmetrical welding, strictly
The technological parameter condition of welding is controlled, and then the firmness of each assembly assembling can be ensured.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of Double-anchor-head steel anchor beam in background technology.
The process schematic that Fig. 2-Fig. 9 makes for the multidirectional four anchor heads overall steel anchor beam of the present invention.
Embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
Embodiment
The multidirectional four anchor heads overall steel anchor beam preparation method of the present embodiment, the preparation method comprises the following steps:
(1)Web unit 1 makes:As shown in Fig. 2 digital control flame accurate cutting is used to the steel plate of blanking, in steel plate one side
Two ends be symmetrically formed the inclined-plane 11 being connected with steel plate two ends, then with catching up with trigger leveling, strict control plane degree≤
0.3mm, then carries out retaining wall on slope, and then be centrally formed an arc in the side with inclined-plane to cutting bevelled side
Groove 12, on the basis of the axis with arc groove steel plate and machined flange line, with scriber in the axis position of steel plate
Put and mark a point center line, marked on two sides of steel plate and anchor head assembling position line has also been drawn on the bolt hole position line, steel plate, and anchor
Head assembling position line and the both sides of arc groove be arranged in parallel, need to consider welding contracted quantity during line, anchor head assembling position line with
The bolt hole position line is marked simultaneously;Finally, keyhole is drilled with card model at the bolt hole position line, web unit 1 is formed;
(2)Bottom board unit 2 makes:As shown in figure 3, being punched out to the steel plate of blanking, rectangle is provided with the Central Symmetry of steel plate
Hole 21, and plate centre line is marked, then using digital control flame accurate cutting, it is symmetrical arranged in the both sides with rectangular opening steel plate
There is inverted trapezoidal groove 22, and four symmetrically arranged elliptical apertures 23 with inclination angle are formed with the two ends cutting of steel plate;It is oval
Steel plate is lain in a horizontal plane on cutting stand when hole is cut, carefully adjustment elliptical aperture long axis centerline is parallel with trolley track, ellipse
Circular hole short axle center line and cart parallel track, its error amount≤1mm will cut the cutting of tool tuyere tilt alpha angle completion elliptical aperture;
Then with trigger leveling is caught up with, strict control plane degree≤0.3mm forms bottom board unit 2;
(3)Anchor plate 3 makes:As shown in figure 4, Numerical control cutting is carried out to the steel plate of blanking, it is strict to control then with trigger leveling is caught up with
Flatness≤0.3mm processed, is then machined out plane, and bores at the center of steel plate a circular hole 31, then marks anchoring part plate
Position line, returns sample punching, forms anchor plate 3;
(4)The 4 groups of welderings of anchor head unit:As shown in figure 5, producing bearing plate 41, the round-meshed anchoring part plate 42 in center and side
Anchor head dividing plate 43 with half elliptic hole, and abutting edge is processed, the then precise scoring lines assembling on anchor head machining platform,
First a bearing plate 41 and anchoring part plate 42 are assembled, it is ensured that perpendicularity≤0.5mm of bearing plate 41 and anchoring part plate 42, then
Anchor head dividing plate 43 is assembled with bearing plate 41 and anchoring part plate 42, it is ensured that anchor head dividing plate 43 and 42 liang of bearing plate 41 and anchoring part plate
Perpendicularity≤0.5mm of person, then another bearing plate 41 is assembled with anchor head dividing plate 43 and anchoring part plate 42, it is ensured that bearing plate 41
With anchor head dividing plate 43 and both the perpendicularity≤0.5mm of anchoring part plate 42, " ∏ " shape anchor head unit is formed;Model is used after being completed
Detect perpendicularity, it is qualified after use CO2Between gas shielded arc welding symmetrical welding, and bearing plate 41 and anchor head dividing plate 43 and anchoring part plate 42
Penetration groove angle welding use reversible deformation with Reducing distortion;
(5)Web unit 1 is assembled with anchor head unit 4:As shown in Figures 6 and 7, a web unit 1 is placed on platform, strictly presses abdomen
Slab element 1 draws anchor head assembling position line assembling anchor head unit 4 when making, another piece of web unit 1 is then assembled again, has been assembled
Into rear CO2Melt-through weld between gas shielded arc welding symmetrical welding web unit 1 and anchor head unit 4, is finally repaired, and is formed
Web and anchor head assembly;
(6)Bottom board unit is assembled:As shown in figure 8, bottom board unit 2 is placed on platform, then by step(5)Middle finishing is met will
The web asked is assembled in bottom board unit with anchor head assembly, and two web units 1 is symmetricly set on rectangle in bottom board unit 2
, then there is end board 5 both sides in hole 21 in the over-assemble of bottom board unit 2, and end board 5 is respectively assembled in the outer end of anchor head unit 4,
Then some pieces of internal partitions 6 are assembled between adjacent two web and anchor head assembly, for controlling adjacent two web to dehisce chi
It is very little, it is ensured that two webs add internal partition spacing tolerance to be 0~+1, while ensureing semiellipse hole center and bottom plate list in anchor head unit 4
The center of elliptical aperture 23 with inclination angle is with the center line of anchor head unit 4 in member 2;Both sides anchoring part plate hole centre-to-centre spacing is examined simultaneously,
Through specially examine it is qualified after, using CO2Gas shielded arc welding symmetrical welding, strict control deformation is welded on special welding fetalism, it is to avoid
Bottom plate produces angular deformation;
(7)Other feature boards are assembled:As shown in figure 9, being assembled respectively between the outside of web unit and middle two webs unit 1
The top plate 7 of bottom plate is parallel to, and is assembled between lateral roof and bottom plate several outside stiffeners perpendicular to bottom plate
8, CO is then used on the anchoring part plate 42 on anchor unit 42Gas shielded arc welding symmetrical welding anchor plate 3, makes the circle on anchor plate 3
Hole 31 is overlapped with the circular hole on anchoring part plate 42, and the upper surface of the bearing plate 41 on anchor unit uses CO2Gas shielded arc welding pair
Claim welding to have anchor beam stiffener 9, form a multidirectional four anchor heads overall steel anchor beam.
As embodiment, embodiment is CO2During gas shielded arc welding symmetrical welding, preheating temperature is 60~100 DEG C,
Temperature is 60~200 DEG C between heat range >=100mm, road.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Art personnel are it should be appreciated that the present invention is not limited to the above embodiments, and described in above-described embodiment and specification is explanation
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
1. a kind of multidirectional four anchor heads overall steel anchor beam preparation method, it is characterised in that:The preparation method comprises the following steps:
(1)Web unit makes:Digital control flame accurate cutting is used to the steel plate of blanking, in the two ends symmetric figure of steel plate one side
The inclined-plane of Cheng Youyu steel plates two ends linking, then with catching up with trigger leveling, strict control plane degree≤0.3mm, then to being cut with
The side on inclined-plane carries out retaining wall on slope, and then is centrally formed an arc groove in the side with inclined-plane, with arc slope
On the basis of the axis of mouth steel plate and machined flange line, the axis line position with scriber in steel plate marks a point center line, in steel plate
Two sides on mark anchor head assembling position line also drawn on the bolt hole position line, the steel plate, and anchor head assembling position line with
The both sides of arc groove are be arranged in parallel, and welding contracted quantity need to be considered during line;Finally, bored at the bolt hole position line with card model
Tumbler hole, forms web unit;
(2)Bottom board unit makes:The steel plate of blanking is punched out, rectangular opening is provided with the Central Symmetry of steel plate, and mark steel
Plate center line, then using digital control flame accurate cutting, inverted trapezoidal groove is symmetrically arranged with the both sides with rectangular opening steel plate,
And it is formed with four symmetrically arranged elliptical apertures with inclination angle in the two ends cutting of steel plate;By steel plate level when elliptical aperture is cut
Be placed on cutting stand on, carefully adjustment elliptical aperture long axis centerline it is parallel with trolley track, elliptical aperture short axle center line with greatly
Car parallel track, its error amount≤1mm will cut the cutting of tool tuyere tilt alpha angle completion elliptical aperture;Then with catching up with trigger leveling,
Strict control plane degree≤0.3mm, forms bottom board unit;
(3)Anchor plate makes:Numerical control cutting is carried out to the steel plate of blanking, then with milling backing plate leveling, strict control plane degree≤
0.3mm, is then machined out plane, and bores at the center of steel plate a circular hole, then marks anchoring part plate position line, returns sample
Punching, forms anchor plate;
(4)Anchor head unit group is welded:Produce bearing plate, the round-meshed anchoring part plate in center and side and carry half elliptic hole
Anchor head dividing plate, and abutting edge is processed, the then precise scoring lines assembling on anchor head machining platform, i.e., first by a bearing plate and anchor
Seat board is assembled, it is ensured that perpendicularity≤0.5mm of bearing plate and anchoring part plate, then by anchor head dividing plate and bearing plate and anchoring part plate
Assembled, it is ensured that perpendicularity≤0.5mm of anchor head dividing plate and both bearing plate and anchoring part plate, then by another bearing plate and anchor head
Dividing plate and anchoring part plate are assembled, it is ensured that perpendicularity≤0.5mm of bearing plate and both anchor head dividing plate and anchoring part plate, are formed " ∏ "
Shape anchor head unit;After being completed with model detect perpendicularity, it is qualified after use CO2Gas shielded arc welding symmetrical welding, and pressure-bearing
Penetration groove angle welding between plate and anchor head dividing plate and anchoring part plate uses reversible deformation with Reducing distortion;
(5)Web unit is assembled with anchor head unit:One web unit is placed on platform, drawn when strictly being made by web unit
Anchor head assembling position line assembles anchor head unit, and another piece of web unit is then assembled again, rear CO is completed2Gas shielded arc welding pair
Claim the melt-through weld between welding web unit and anchor head unit, finally repaired, form web and anchor head assembly;
(6)Bottom board unit is assembled:Bottom board unit is placed on platform, then by step(5)It is middle finishing meet require web with
Anchor head assembly is assembled in bottom board unit, and two web units is symmetricly set on the both sides of rectangular opening in bottom board unit, so
There is end board in bottom board unit over-assemble afterwards, end board is respectively assembled in the outer end of anchor head unit, then in adjacent two web
Some pieces of internal partitions are assembled between anchor head assembly, for controlling adjacent two web to dehisce size, it is ensured that in two webs add
Dividing plate spacing tolerance is 0~+1, while ensureing ellipse of the semiellipse hole center with carrying inclination angle in bottom board unit in anchor head unit
Hole center is with anchor head unit center line;Simultaneously examine both sides anchoring part plate hole centre-to-centre spacing, through specially examine it is qualified after, using CO2Gas
Body protection weldering symmetrical welding, strict control deformation is welded on special welding fetalism, it is to avoid bottom plate produces angular deformation;
(7)Other feature boards are assembled:It is assembled with respectively the bottom of parallel between the outside of web unit and middle two webs unit
The top plate of plate, and several outside stiffeners perpendicular to bottom plate are assembled between lateral roof and bottom plate, then in anchor list
CO is used on anchoring part plate in member2Gas shielded arc welding symmetrical welding anchor plate, makes the circular hole on anchor plate and the circle on anchoring part plate
Hole is overlapped, and the upper surface of the bearing plate on anchor unit uses CO2Gas shielded arc welding symmetrical welding has anchor beam stiffener, is formed
One multidirectional four anchor heads overall steel anchor beam.
2. multidirectional four anchor heads overall steel anchor beam preparation method according to claim 1, it is characterised in that:The step(1)
Middle anchor head assembling position line is marked simultaneously with the bolt hole position line.
3. multidirectional four anchor heads overall steel anchor beam preparation method according to claim 1, it is characterised in that:The CO2Gas is protected
During shield weldering symmetrical welding, preheating temperature is 60~100 DEG C, heat range >=100mm, and temperature is 60~200 DEG C between road.
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