CN107253026B - A kind of multidirectional four anchor heads overall steel anchor beam production method - Google Patents

A kind of multidirectional four anchor heads overall steel anchor beam production method Download PDF

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Publication number
CN107253026B
CN107253026B CN201710484745.3A CN201710484745A CN107253026B CN 107253026 B CN107253026 B CN 107253026B CN 201710484745 A CN201710484745 A CN 201710484745A CN 107253026 B CN107253026 B CN 107253026B
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plate
anchor
unit
anchor head
web
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CN107253026A (en
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陈方能
那宪伟
王悦程
田正兰
王建国
许超众
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China Railway Shanhaiguan Bridge Heavy Industry Co Ltd
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China Railway Shanhaiguan Bridge Heavy Industry Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges

Abstract

The present invention relates to a kind of multidirectional four anchor heads overall steel anchor beam production method, the production method includes the following steps: that (1) web unit makes;(2) bottom board unit makes;(3) anchor plate makes;(4) anchor head unit group is welded;(5) web unit and anchor head unit assemble;(6) bottom board unit assembles;(7) other function board group fills.The present invention has the advantages that the multidirectional four anchor heads overall steel anchor beam production method of the present invention, the production of web unit, bottom board unit production, anchor plate production, the weldering of anchor head unit group, web unit and the assembling of anchor head unit, bottom board unit assembling and other feature boards are broadly divided into assemble, manufacturing process is reasonable, guarantee that manufacturing quality and assembly welding are smooth, and the production method has the advantages that production method is simple and convenient to operate and with high accuracy.

Description

A kind of multidirectional four anchor heads overall steel anchor beam production method
Technical field
The invention belongs to bridge manufacturing technology field, in particular to a kind of multidirectional four anchor heads overall steel anchor beam production method.
Background technique
With the rapid development of social economy, the pressure of land transportation is increasingly highlighted, in order to solve this pressure, largely The projects such as railway, highway build it is 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 studies, main bridge is that the double rope face Low Towers steel case steel truss of double tower combine girder stayed-cable bridge, overall length 1234.6m, bridge floor use double layer design, and upper layer is 8 lane roads, and lower layer is four-track line.Span arrangement are as follows: (99.3+238+ 588+224+85.3) m, girder upper layer be plate girder combine, lower layer be steel case Combined steel truss beam, triangular form truss, two panels main truss, on Layer purlin center is away from 33.8m, and lower layer, center, purlin is away from for 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 piece.Since this bridge Cable power is big, cable-pylon anchorage zone is adopted The mode combined with steel anchor beam anchor-hold system with prestress anchorage system, steel anchor beam is for balancing two layback of construction stage The dead load cable tension of rope, so that most drag-line horizontal pulls in this stage do not act directly on Concrete-filled steel tube.Meanwhile Due to the particularity of this bridge, multidirectional four anchor heads overall steel anchor beam is selected, and the generally double anchors of the steel anchor beam for being currently used for bridge 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,It constitutes, 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 carries out;But the manufacture craft is not particularly suited for the production of multidirectional four anchor heads overall steel anchor beam.
Therefore it is badly in need of developing a kind of production method to be simple and convenient to operate and the multidirectional four anchor heads overall steel anchor beam of bridge with high accuracy Production method is not found and the same or similar technical solution of the present invention through retrieving.
Summary 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 production method and bridge with high accuracy is multidirectional Four anchor head overall steel anchor beam production methods.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of multidirectional four anchor heads overall steel anchor beam production side Method, innovative point are: the production method includes the following steps:
(1) web unit makes: digital control flame accurate cutting is used to the steel plate of blanking, at the both ends pair of steel plate one side Title is formed with the inclined-plane being connected with steel plate both ends, then with catching up with trigger leveling, strict control flatness≤0.3mm, then to cutting It cuts bevelled side and carries out retaining wall on slope, and then be centrally formed an arc groove in the side with inclined-plane, to have arc On the basis of the central axes of shape groove steel plate and machined flange line, the axis line position with scriber in steel plate marks a point middle line, The bolt hole position line is marked on the two sides of steel plate, and anchor head assembled position line, and anchor head assembled position have also been drawn on the steel plate The two sides of line and arc groove are arranged in parallel, and when scribing line need to consider welding contracted quantity;Finally, with card sample at the bolt hole position line Twist drill tumbler hole forms web unit;
(2) bottom board unit makes: being punched out to the steel plate of blanking, is equipped with rectangular opening in the central symmetry of steel plate, and draw Then plate centre line out uses digital control flame accurate cutting, be symmetrically arranged with inverted trapezoidal in the two sides with rectangular opening steel plate Groove, and cut to be formed there are four the symmetrically arranged elliptical aperture with inclination angle at the both ends of steel plate;By steel when elliptical aperture is cut Plate is lain in a horizontal plane on cutting rack, and carefully adjustment elliptical aperture long axis centerline is parallel with trolley track, elliptical aperture short axle center Line is parallel with cart track, 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 flatness≤0.3mm form 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 Then degree≤0.3mm is machined out plane, and bores a circular hole at the center of steel plate, then mark anchoring part plate position line, return Sample punching, forms anchor plate;
(4) anchor head unit group is welded: producing bearing plate, the round-meshed anchoring part plate in center and side with half elliptic The anchor head partition in hole, and abutting edge is processed, the then precise scoring lines assembling on anchor head machining platform, i.e., first by a bearing plate It is assembled with anchoring part plate, guarantees verticality≤0.5mm of bearing plate and anchoring part plate, then by anchor head partition and bearing plate and anchor Seat board is assembled, and guarantees the verticality≤0.5mm of both anchor head partition and bearing plate and anchoring part plate, then by another bearing plate and Anchor head partition and anchoring part plate are assembled, and guarantee the verticality≤0.5mm of both bearing plate and anchor head partition and anchoring part plate, are formed " ∏ " shape anchor head unit;Verticality is detected with template after being completed, uses CO after qualified2Gas shielded arc welding symmetrical welding, and Penetration groove fillet weld between bearing plate and anchor head partition and anchoring part plate uses reversible deformation with Reducing distortion;
(5) web unit and anchor head unit assemble: a web unit being placed on platform, when strictly making by web unit Drawn anchor head assembled position line assembles anchor head unit, then assembles another piece of web unit again, is completed rear CO2Gas shield The melt-through weld between symmetrical welding web unit and anchor head unit is welded, is finally modified, web and anchor head assembly are formed;
(6) bottom board unit assembles: bottom board unit being placed on platform, the abdomen met the requirements will be then modified in step (5) Plate and anchor head assembly are assembled in bottom board unit, and two web units is made to be symmetricly set on two of rectangular opening in bottom board unit Then there is end board in side in bottom board unit over-assemble, end board is respectively assembled in the outer end of anchor head unit, then adjacent two It is assembled with several pieces of internal partitions between web and anchor head assembly, dehisces size for controlling adjacent two web, guarantees two webs Adding internal partition spacing tolerance is 0~+1, while guaranteeing to have inclination angle in semiellipse hole center and bottom board unit in anchor head unit Elliptical aperture center is the same as on anchor head unit center line;Simultaneously examine two sides anchoring part plate hole center away from, after specially examining qualification, use CO2Gas shielded arc welding symmetrical welding, strict control deformation are welded on special welding fetalism, and bottom plate is avoided to generate angular deformation;
(7) other function board group fills: being assembled with respectively between the outside and intermediate two web units of web unit parallel It is assembled with several in the top plate of bottom plate, and on the outside between top plate and bottom plate perpendicular to the outside stiffener of bottom plate, then exists CO is used on anchoring part plate on anchor unit2Gas shielded arc welding symmetrical welding anchor plate makes on the circular hole and anchoring part plate on anchor plate Circular hole be overlapped, and the upper surface of the bearing plate on anchor unit use CO2Gas shielded arc welding symmetrical welding has anchor beam stiffener, Form a multidirectional four anchor heads overall steel anchor beam.
Further, anchor head assembled position line marks simultaneously with the bolt hole position line in the step (1).
Further, the CO2When gas shielded arc welding symmetrical welding, preheating temperature is 60~100 DEG C, heat range >= 100mm, temperature is 60~200 DEG C between road.
The present invention has the advantages that
(1) the multidirectional four anchor heads overall steel anchor beam production method of the present invention is broadly divided into the production of web unit, bottom board unit system Work, anchor plate production, the weldering of anchor head unit group, web unit and the assembling of anchor head unit, bottom board unit assembling and other feature board groups Dress, manufacturing process is reasonable, guarantees that manufacturing quality and assembly welding are smooth;
Wherein, web is the key that anchor case stress part, and the present invention uses digital control flame accurate cutting, then precise scoring lines to add The process at work edge, the angle and anchor point centre coordinate of anchor head unit, which are locked in deviation, by precise scoring lines allows model In enclosing, and then anchor case overall package precision can be improved;
Bottom plate is also one of part important in steel anchor beam as web, and bottom plate production control is four elliptical apertures Relative position size, since numerical control cutting machine can not achieve four elliptical apertures with inclination angle while cut, thus using essence The method for really programming cutting after scribing line respectively, and then can guarantee the degree of tilt and accuracy of elliptical aperture;Meanwhile web group clock synchronization is pressed According to single-piece institute
Scribing line assembling, when assembling among internal partition is set, convenient for two web center lines and the concentricity in hole;The thus production Method has the advantages that production method is simple and convenient to operate and with high accuracy;
(2) the multidirectional four anchor heads overall steel anchor beam production method of the present invention, wherein web is anchor
The crucial stress part of case, thus in scribing line, anchor head assembled position line marks simultaneously with the bolt hole position line, subtracts Small secondary lineation error is conducive to improve assembly precision and shortens the manufacturing cycle;
(3) the multidirectional four anchor heads overall steel anchor beam production method of the present invention, wherein CO2When gas shielded arc welding symmetrical welding, The technological parameter condition of strict control welding, and then can guarantee the firmness of each assembly assembling.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of Double-anchor-head steel anchor beam in background technique.
Fig. 2-Fig. 9 is the process schematic of the multidirectional four anchor heads overall steel anchor beam production of the present invention.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this It is bright to be limited among the embodiment described range.
Embodiment
The multidirectional four anchor heads overall steel anchor beam production method of the present embodiment, the production method include the following steps:
(1) web unit 1 makes: as shown in Fig. 2, the steel plate to blanking uses digital control flame accurate cutting, in steel plate one The both ends of side are symmetrically formed the inclined-plane 11 being connected with steel plate both ends, then with catching up with trigger leveling, strict control flatness≤ Then 0.3mm carries out retaining wall on slope to the bevelled side of cutting, and then is centrally formed an arc in the side with inclined-plane Groove 12, on the basis of the central axes for having arc groove steel plate and machined flange line, with scriber in the central axes of steel plate position It sets and marks a point middle line, the bolt hole position line is marked on the two sides of steel plate, anchor head assembled position line, and anchor have also been drawn on steel plate Head assembled position line and the two sides of arc groove are arranged in parallel, and when scribing line need to consider welding contracted quantity, anchor head assembled position line with The bolt hole position line marks simultaneously;Finally, drilling keyhole with card template at the bolt hole position line, web unit 1 is formed;
(2) bottom board unit 2 makes: as shown in figure 3, the steel plate to blanking is punched out, being equipped in the central symmetry of steel plate Rectangular opening 21, and plate centre line is marked, digital control flame accurate cutting is then used, it is symmetrical in the two sides with rectangular opening steel plate It is provided with inverted trapezoidal groove 22, and cuts to form that there are four the symmetrically arranged elliptical apertures 23 with inclination angle at the both ends of steel plate; Steel plate is lain in a horizontal plane on cutting rack when elliptical aperture is cut, elliptical aperture long axis centerline is carefully adjusted and trolley track is flat Row, elliptical aperture short axle center line is parallel with cart track, error amount≤1mm, will cut tool tuyere tilt alpha angle and completes elliptical aperture Cutting;Then with trigger leveling is caught up with, strict control flatness≤0.3mm forms bottom board unit 2;
(3) anchor plate 3 makes: as shown in figure 4, the steel plate to blanking carries out Numerical control cutting, then with trigger leveling is caught up with, sternly Lattice control flatness≤0.3mm, are then machined out plane, and bore a circular hole 31 at the center of steel plate, then mark anchor Seat board position line returns sample punching, forms anchor plate 3;
(4) 4 groups of welderings of anchor head unit: as shown in figure 5, produce bearing plate 41, the round-meshed anchoring part plate 42 in center and Side has the anchor head partition 43 in half elliptic hole, and processes abutting edge, then the precise scoring lines on anchor head machining platform Assembling, i.e., first assemble a bearing plate 41 with anchoring part plate 42, guarantee the verticality of bearing plate 41 and anchoring part plate 42≤ Then 0.5mm assembles anchor head partition 43 and bearing plate 41 and anchoring part plate 42, guarantee anchor head partition 43 and bearing plate 41 and Verticality≤0.5mm of both anchoring part plates 42, then another bearing plate 41 is assembled with anchor head partition 43 and anchoring part plate 42, it protects Verticality≤0.5mm of both bearing plate 41 and anchor head partition 43 and anchoring part plate 42 is demonstrate,proved, " ∏ " shape anchor head unit is formed;Group installs Cheng Houyong template detects verticality, uses CO after qualified2Gas shielded arc welding symmetrical welding, and bearing plate 41 and anchor head partition 43 and Penetration groove fillet weld between anchoring part plate 42 uses reversible deformation with Reducing distortion;
(5) web unit 1 and anchor head unit 4 assemble: as shown in Figures 6 and 7, a web unit 1 being placed on platform, strictly Drawn anchor head assembled position line assembles anchor head unit 4 when making by web unit 1, then assembles another piece of web unit 1, group again CO after the completion of dress2Melt-through weld between gas shielded arc welding symmetrical welding web unit 1 and anchor head unit 4, is finally modified, Form web and anchor head assembly;
(6) bottom board unit assembles: as shown in figure 8, bottom board unit 2 is placed on platform, it is then that finishing in step (5) is full The web and anchor head assembly required enough is assembled in bottom board unit, and is symmetricly set on two web units 1 in bottom board unit 2 Then there are end board 5 in the two sides of rectangular opening 21 in 2 over-assemble of bottom board unit, end board 5 is respectively assembled in the outer of anchor head unit 4 End is then assembled with several pieces of internal partitions 6 between adjacent two web and anchor head assembly, for controlling adjacent two web Mouth size guarantees that two webs add internal partition spacing tolerance to be 0~+1, while guaranteeing semiellipse hole center and bottom in anchor head unit 4 23 center of elliptical aperture on plate unit 2 with inclination angle is the same as on 4 center line of anchor head unit;Two sides anchoring part plate hole center is examined simultaneously Away from after specially examining qualification, using CO2Gas shielded arc welding symmetrical welding, strict control deformation are welded on special welding fetalism, are kept away Exempt from bottom plate and generates angular deformation;
(7) other function board group fills: as shown in figure 9, between the outside and intermediate two web units 1 of web unit respectively Assembling is parallel to the top plate 7 of bottom plate, and is assembled with several between top plate and bottom plate on the outside and adds perpendicular to the outside of bottom plate Then strength plate 8 uses CO on the anchoring part plate 42 on anchor unit 42Gas shielded arc welding symmetrical welding anchor plate 3, makes on anchor plate 3 Circular hole 31 be overlapped with the circular hole on anchoring part plate 42, and the upper surface of the bearing plate 41 on anchor unit use CO2Gas shield Weldering symmetrical welding has anchor beam stiffener 9, forms a multidirectional four anchor heads overall steel anchor beam.
As embodiment, specific embodiment CO2When gas shielded arc welding symmetrical welding, preheating temperature is 60~100 DEG C, Heat range >=100mm, temperature is 60~200 DEG C between road.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, 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 production method, it is characterised in that: the production method includes the following steps:
(1) web unit makes: digital control flame accurate cutting is used to the steel plate of blanking, in the both ends symmetric figure of steel plate one side The inclined-plane of Cheng Youyu steel plate both ends linking, then with catching up with trigger leveling, strict control flatness≤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 the inclined-plane, to have arc slope On the basis of the central axes of mouth steel plate and machined flange line, the axis line position with scriber in steel plate marks a point middle line, in steel plate Two sides on mark the bolt hole position line, also drawn anchor head assembled position line on the steel plate, and anchor head assembled position line with The two sides of arc groove are arranged in parallel, and when scribing line need to consider welding contracted quantity;Finally, being bored at the bolt hole position line with card template Tumbler hole forms web unit;
(2) bottom board unit makes: being punched out to the steel plate of blanking, is equipped with rectangular opening in the central symmetry of steel plate, and mark steel Then plate center line uses digital control flame accurate cutting, be symmetrically arranged with inverted trapezoidal groove in the two sides with rectangular opening steel plate, And the symmetrically arranged elliptical aperture with inclination angle there are four cutting and to be formed at the both ends of steel plate;By steel plate level when elliptical aperture is cut Be placed on cutting rack on, carefully adjust elliptical aperture long axis centerline it is parallel with trolley track, elliptical aperture short axle center line with greatly Vehicle parallel track, 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 flatness≤0.3mm forms bottom board unit;
(3) anchor plate makes: Numerical control cutting is carried out to the steel plate of blanking, then uses and mills backing plate leveling, strict control flatness≤ Then 0.3mm is machined out plane, and bores a circular hole at the center of steel plate, then mark anchoring part plate position line, return sample Punching forms anchor plate;
(4) anchor head unit group is welded: producing bearing plate, the round-meshed anchoring part plate in center and side with half elliptic hole Anchor head partition, 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, and guarantees verticality≤0.5mm of bearing plate and anchoring part plate, then by anchor head partition and bearing plate and anchoring part plate It is assembled, guarantees the verticality≤0.5mm of both anchor head partition and bearing plate and anchoring part plate, then by another bearing plate and anchor head Partition and anchoring part plate are assembled, and guarantee the verticality≤0.5mm of both bearing plate and anchor head partition and anchoring part plate, are formed " ∏ " Shape anchor head unit;Verticality is detected with template after being completed, CO2 gas shielded arc welding symmetrical welding, and pressure-bearing are used after qualified Penetration groove fillet weld between plate and anchor head partition and anchoring part plate uses reversible deformation with Reducing distortion;
(5) web unit and anchor head unit assemble: a web unit being placed on platform, is drawn when strictly making by web unit Anchor head assembled position line assembles anchor head unit, then assembles another piece of web unit again, is completed rear CO2 gas shielded arc welding pair Claim the melt-through weld between welding web unit and anchor head unit, finally modified, forms web and anchor head assembly;
(6) bottom board unit assembles: bottom board unit is placed on platform, then will finishing is met the requirements in step (5) web with Anchor head assembly is assembled in bottom board unit, and two web units is made to be symmetricly set on the two 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 Be assembled with several pieces of internal partitions between anchor head assembly, dehisce size for controlling adjacent two web, guarantee that two webs add in Partition room is 0~+1 away from tolerance, at the same guarantee half elliptic hole center in anchor head unit with it is ellipse with inclination angle in bottom board unit Center of circular hole is the same as on anchor head unit center line;Simultaneously examine two sides anchoring part plate center of circular hole away from, after specially examining qualification, use CO2 gas shielded arc welding symmetrical welding, strict control deformation are welded on special welding fetalism, and bottom plate is avoided to generate angular deformation;
(7) other function board group fills: assembling is parallel to bottom respectively between the outside and intermediate two web units of web unit The top plate of plate, and several are assembled with perpendicular to the outside stiffener of bottom plate, then in anchor head between top plate and bottom plate on the outside CO2 gas shielded arc welding symmetrical welding anchor plate is used on anchoring part plate on unit, is made on the circular hole and anchoring part plate on anchor plate Circular hole is overlapped, and there is anchor beam stiffener in the upper surface of the bearing plate on anchor head unit using CO2 gas shielded arc welding symmetrical welding, Form a multidirectional four anchor heads overall steel anchor beam.
2. multidirectional four anchor heads overall steel anchor beam production method according to claim 1, it is characterised in that: the step (1) Middle anchor head assembled position line marks simultaneously with the bolt hole position line.
3. multidirectional four anchor heads overall steel anchor beam production method according to claim 1, it is characterised in that: the CO2 gas When protection weldering symmetrical welding, preheating temperature is 60~100 DEG C, heat range >=100mm, and temperature is 60~200 DEG C between road.
CN201710484745.3A 2017-06-23 2017-06-23 A kind of multidirectional four anchor heads overall steel anchor beam production method Active CN107253026B (en)

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CN108098264B (en) * 2017-11-28 2019-10-18 江苏中铁山桥重工有限公司 A kind of manufacturing method of multimode stage construction bolt anchoring beam
CN108080891B (en) * 2017-11-28 2019-08-20 江苏中铁山桥重工有限公司 A kind of manufacturing method of the multi-faceted bolt steel ball in inside
CN109702387B (en) * 2018-09-28 2020-11-20 江苏中铁山桥重工有限公司 Method for manufacturing steel structure of tower column lining of cable-stayed bridge
CN110722327A (en) * 2019-10-28 2020-01-24 中铁山桥集团有限公司 Method for manufacturing integral plug-in anchor box
CN111441255A (en) * 2020-04-10 2020-07-24 中铁九桥工程有限公司 Multi-cable-surface steel anchor beam factory total splicing method

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