CN114029678A - Manufacturing method of inward-inclined penetrating gusset plate chord member and assembling tool thereof - Google Patents
Manufacturing method of inward-inclined penetrating gusset plate chord member and assembling tool thereof Download PDFInfo
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- CN114029678A CN114029678A CN202111335748.3A CN202111335748A CN114029678A CN 114029678 A CN114029678 A CN 114029678A CN 202111335748 A CN202111335748 A CN 202111335748A CN 114029678 A CN114029678 A CN 114029678A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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Abstract
The method for manufacturing the inward-inclined penetrating gusset chord member comprises the following steps: manufacturing a slope tool, machining a notch in a numerical control manner, machining a notch slope, assembling on the slope tool, and turning over and welding in sequence. The invention adopts a slope tool, controls the technological quantity of the notch, reasonably turns over the welding sequence, and solves the problem that the inward-inclined chord member penetrating the gusset plate is inconvenient to penetrate quickly; easy welding deformation; the dimensional accuracy is not high and the production efficiency is low; welding deformation is effectively controlled, the precision requirement is guaranteed, production efficiency is improved, and a good reference function is played for follow-up similar steel beam manufacturing.
Description
Technical Field
The invention belongs to the technical field of fixed building bridge manufacturing, and particularly relates to a manufacturing method of an inward-inclined penetrating gusset chord member and an assembling tool thereof.
Background
With the rapid development of economy, the steel structure bridge matures day by day in the technologies of foundation materials, structural design, manufacturing, fatigue resistance, welding, corrosion resistance and the like, and a solid foundation is provided for the development of the steel structure large bridge. In the structural design of a steel beam box chord member in the conventional steel structure bridge, in order to increase the force transmission effect of the steel bridge, the common design form of the chord member is mostly a rectangular section (see figure 1), namely, a gusset plate 1 vertically penetrates through a top plate 2; or non-rectangular cross-section (see fig. 2): gusset plate 1 does not extend through the structure of slot 201 in top plate 2. However, in recent years, with the variety and characteristics of steel bridges, designs of the steel bridges tend to be novel and beautiful, (as shown in fig. 3) chord structures with non-rectangular cross sections, that is, inward-inclined box-type structures through which the notches of the gusset plates 1 and the top plate 2 are obliquely penetrated, are becoming more popular. However, in the prior art, because the section of the steel beam box chord structure is a non-rectangular section and is a structure penetrating through each other, when the gusset plate 1 penetrates into the notch 201 of the top plate 2, if the gusset plate is directly hoisted and inclined to be installed, the splicing installation of the gusset plate 1 and the notch 201 is difficult, and the installation efficiency is low; meanwhile, the top plate notch and the gusset plate are connected in a penetration welding mode, and due to the fact that welding spots are more, welding deformation is large, and the requirement on size precision is difficult to control. In view of this, the following technical solutions are proposed.
Disclosure of Invention
The technical problems solved by the invention are as follows: the manufacturing method and the assembly tool thereof for the inward-inclined penetrating gusset plate chord member are provided, the slope tool is adopted, the process control of the notch is realized, the welding sequence is reasonably turned over, and the problem that the inward-inclined penetrating gusset plate chord member is inconvenient to quickly penetrate is solved; easy welding deformation; the dimensional accuracy is not high and the production efficiency is low.
The technical scheme adopted by the invention is as follows: the manufacturing method of the inward-inclined type penetrating gusset chord member comprises the following steps:
s001, manufacturing a slope tool: the slope of the slope tool is consistent with the slope of the top plate when the gusset plate rotates to be vertical;
s002, numerical control machining of a notch: setting a breakpoint with a fixed size length of A during numerical control programming, setting a breakpoint with a next size length of A at intervals of a fixed size B, and so on by adopting the breakpoint function of the numerical control machine to process a notch;
s003, processing a notch slope: processing the section of the notch into a V-shaped double-sided groove structure;
s004 and assembling: a slope tool is padded at the bottom, the gusset plate 1 is vertically arranged in the ground, and the gusset plate and the inner corner welding seams I and II of the bottom plate are welded into a whole; hoisting the top plate to connect the notch of the top plate with the vertical gusset plate in an inserting manner to form a chord member;
s005, turning over and welding: turning the assembled chord members by 90 degrees in a vertical plane and then welding outer side welding seams III, IV and V; then turning the chord members 180 degrees in a vertical plane and welding symmetrical side welding seams VI, VII and VIII; then reset chord member in vertical plane turn over to original upright state, weld level position welding seam IX, X, XI, XII at last, obtain fashioned fall-in formula and penetrate the gusset plate chord member.
In the above technical solution, further: the notch machining size technological quantity is increased by 6-10 mm on the standard size D.
In the above technical solution, further: the inclination angles beta of the double-sided grooves of the V-shaped double-sided groove structure of the notch section are equal and are all 30-40 degrees; the weld joint fillable area S1 of the upper end groove in the V-shaped double-groove structure is larger than the weld joint fillable area S2 of the lower end groove.
The inward-inclined penetrating gusset plate chord member assembling tool used in the inward-inclined penetrating gusset plate chord member manufacturing method is a slope tool; the slope tool is fixedly installed at the center of the upper end face of the special jig frame; the special jig frame is horizontally and fixedly installed on the ground; the left side and the right side of the upper end surface of the special jig frame are respectively provided with lateral supports which are symmetrical to each other in a left-right direction by taking the vertical central line of the slope tool as a symmetrical axis; jacks are respectively arranged on the two lateral supports in the left-right axial symmetry mode, and the gusset plates are supported through the jacks, so that the gusset plates on the upper end face of the slope tool are prevented from inclining and turning outwards.
In the above technical solution, further: the slope tool is of a box-type structure with a right-trapezoid longitudinal section, and a box-type high-side box plate of the right-trapezoid is fixedly installed in the center of the upper end face of the special jig frame; an upper bottom box plate and a lower bottom box plate in the right-angle trapezoid box type are vertically arranged in parallel at intervals left and right by taking the vertical center of the special jig frame as a symmetry axis; the box type bevel edge box plate of the right trapezoid inclines upwards, and the bevel edge box plate supports the bottom plate in an inclined manner; the slope of the hypotenuse box plate coincides with the slope of the top plate that the top plate tilts when the gusset plate 1 is rotated to be vertical.
In the above technical solution, further: the slope tool is of a box-type structure with a right trapezoid longitudinal section; be equipped with a plurality of strengthening ribs for support that are used for preventing the box deformation in the box of slope frock.
In the above technical solution, further: the lateral support is a right-angled triangle frame type support structure which is made by welding profile steel, and a right-angled side I of the right-angled triangle frame is horizontally arranged and is jointed with the horizontal upper end surface of the special jig frame into a whole; and the other right-angle side II of the right-angle triangular frame is perpendicular to the horizontal upper end surface of the special jig frame and is arranged adjacent to the vertical gusset plate.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, by arranging the slope tool, considering the process quantity of the notch, and according to a reasonable welding sequence and a turning-over technical measure, the manufacturing problem of the inward-inclined penetrating gusset plate chord member is solved, the welding deformation is controlled, the precision requirement is ensured, the production efficiency is improved, and a good reference is provided for the subsequent similar steel beam manufacturing.
2. The slope tool has the advantages that the slope heightening supporting effect is realized, the control processing of the process quantity of the notch is reasonable, the gusset plate can conveniently penetrate into the notch of the top plate unit, and the manufacturing efficiency is improved.
3. The reasonable welding sequence of the invention cooperates with the double-sided groove structure to reduce the filling amount of the welding flux, and the maximum procedure weakens the deformation problem caused by welding.
4. The invention utilizes the breakpoint function of the numerical control machine tool to process the notch, meets the precision design requirement of the chord member and simultaneously improves the operability of the top plate penetrating into the gusset plate.
Drawings
FIG. 1 is a schematic view of a chord structure of rectangular cross section;
FIG. 2 is a schematic view of a chord structure of non-rectangular cross section but with the gusset plate not extending through the top panel;
FIG. 3 is a schematic structural view of an inwardly inclined drop-in gusset chord made in accordance with the present invention;
FIG. 4 is a front view of a slope tool in use;
FIG. 5 is a schematic view of a top plate machining notch by using a breakpoint function of a numerical control machine;
FIG. 6 is a schematic view showing the state of the inside fillet welds I and II welded first before the turning and welding steps;
FIG. 7 is a schematic view of the state of welding the outside weld joints III, IV and V in the turning and welding step;
FIG. 8 is a schematic view of the state of symmetric side welds VI, VII, VIII during the welding turn-over step;
FIG. 9 is a schematic diagram of states of welding horizontal welds IX, X, XI and XII in the welding turning step;
FIG. 10 is a schematic view of a V-shaped double-sided groove structure of a top plate notch and a gusset plate notch in the process of splicing;
FIG. 11 is a schematic view of the solder area of the V-shaped double bevel of the notch of the top plate;
FIG. 12 is a flow chart of a method of manufacturing an inwardly inclined drop-in gusset chord;
in the figure: 1-gusset plate, 2-top plate, 3-slope tool, 4-bottom plate, 5-special jig frame, 6-lateral support, 201-notch, 301-high-edge box plate, 302-upper bottom box plate, 303-lower bottom box plate, 304-bevel-edge box plate, 601-square edge I, 602-square edge II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 3 to 12 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
(as shown in fig. 3) the manufacturing method of the inward-inclined penetrating gusset chord member comprises the following steps:
(as shown in fig. 4) step S001, making a slope tool: the slope of the slope tool 3 is consistent with the slope of the top plate 2 when the gusset plate 1 is rotated to be vertical.
It should be noted that: the slope tool 3 has enough rigidity to support the weight of the assembled rear chord; and the quantity and the interval of the slope tool 3 which are arranged in parallel at intervals on the ground along the length direction below the top plate should be consistent with the quantity and the interval of the internal partition plate of the chord member above the slope tool 3, so that the plugging gusset plate 1 and the top plate 2 can be conveniently aligned and aligned at one time.
Therefore, the inclined heightening supporting function of the slope tool is cooperated with the process control of the reasonable notch 201 described later, so that the gusset plate 1 can conveniently penetrate into the notch 201 of the top plate 2, and the manufacturing efficiency is improved.
(as shown in fig. 5), step S002, numerically controlling the notch 201: when the numerical control machine tool is used for machining, the breakpoint of the fixed size length A is set during numerical control programming, the fixed size B is used as a distance, the next breakpoint of the fixed size length A is set at the fixed size B at each interval, and the like, and the notch 201 is machined by adopting the breakpoint function of the numerical control machine tool.
It should be noted that: the principle of numerical control machine tool breakpoint processing is that a Siemens 802S numerical control system is taken as an example, and has a breakpoint function; the function is generally used for continuously executing the reset execution program at the interrupt position without restarting the program so as to save the repeated execution process of the executed process sequence section, thereby improving the processing efficiency. The breakpoint function applied by the invention can STOP program processing at a program designated point, when the CPU executes a breakpoint in the program, the CPU can be switched to the STOP STOP mode, and whether the program realizes the expected breakpoint function can be monitored by using the variable table in the STOP STOP mode, so that whether the precision of the processed notch 201 meets the requirement can be checked in time, the accumulated error influence generated by accumulated processing of a plurality of notches 201 in the length direction of the top plate 2 can be eliminated, the processing precision of the notch 201 can be improved, the high-precision requirement of chord rod design can be met, and the operability when the top plate is penetrated can be realized.
Therefore, the invention utilizes the breakpoint function of the numerical control machine tool to process the notch 201, and meets the precision design requirement of the chord member and the operability when penetrating into the top plate.
In the specific application: in the above embodiment, further: the processing size technological quantity of the notch 201 is increased by 6-10 mm on the standard size D.
D +6 ~ 10 mm's process volume reduces the notch 201 clearance on the one hand, and on the other hand still guarantees that two gusset plates 1 can insert roof notch 201 simultaneously smoothly.
Moreover, the setting of breakpoint, in order to reduce the notch deformation when the individual unloading of numerical control, set up the breakpoint during numerical control programming, and breakpoint interval B guarantees at 1500mm, and breakpoint size A is 30 mm. Further ensuring the machining accuracy of the plurality of notches 201 in the longitudinal direction of the top plate 2.
(as shown in fig. 10), step S003, machining the notch slope: the cross section of the notch 201 is processed into a V-shaped double-sided groove structure.
Therefore, compared with the connection mode of the penetration welding in the prior art, the V-shaped double-sided groove structure can effectively reduce the generation of welding deformation.
(as shown in fig. 10) in the above embodiment, further: the inclination angles beta of the double-sided groove of the V-shaped double-sided groove structure with the section of the groove opening 201 are equal and are all 30-40 degrees. The upper beta value and the lower beta value are equal, so that the stress distribution of the welding seam is ensured to be uniform.
(as shown in fig. 11) the weld fillable area S1 of the upper end groove in the V-shaped double groove structure is larger than the weld fillable area S2 of the lower end groove. Ensuring that the notch weld joint is sufficiently rigid.
(as shown in fig. 4 and 6) S004, assembling: a slope tool 3 is padded at the bottom, the gusset plate 1 is vertically arranged in the ground, and the gusset plate 1 and the inner corner welding seams I and II of the bottom plate 4 are welded into a whole; under gusset plate 1 remains vertical, hoist roof 2 in order to link to each other with vertical gusset plate 1 quick grafting of roof 2 notch 201 in order to constitute the chord member.
S005, turning over and welding:
firstly: step S0051, welding the outer welding seams III, IV and V after the assembled chord member is turned over for 90 degrees in a vertical plane (as shown in FIG. 7).
Secondly, the method comprises the following steps: step S0052, after the chord members are turned over for 180 degrees in a vertical plane (as shown in figure 8), welding symmetrical side welding seams VI, VII and VIII.
And furthermore: step S0053, turning over the chord in the vertical plane and resetting the chord to the original vertical state (as shown in FIG. 9), and finally welding the horizontal welds IX, X, XI and XII to obtain the formed inward-inclined type penetrating gusset chord.
Therefore, the welding turning sequence can effectively reduce the welding filling amount, thereby reducing the welding deformation; meanwhile, the operation of workers is facilitated, and the production efficiency is improved.
The manufacturing method of the inward-inclined penetrating gusset plate chord member further comprises an inward-inclined penetrating gusset plate chord member assembling tool used in the inward-inclined penetrating gusset plate chord member manufacturing method, and the tool is a slope tool 3.
The slope tool 3 is fixedly arranged at the center of the upper end face of the special jig frame 5; the special jig frame 5 is horizontally and fixedly installed on the ground.
The special jig frame 5 extends longitudinally along the top plate to support horizontal supports of a plurality of spaced parallel slope tools. The special jig frame 5 is a horizontal box body supporting structure extending longitudinally. The inner side is provided with a reinforced support plate.
The vertical central line of the slope tool 3 is taken as a symmetry axis, and the left side and the right side of the upper end surface of the special jig frame 5 are respectively provided with lateral supports 6 which are symmetrical to each other in a left-right mode; it should be noted that, every two lateral supports 6 with left-right axial symmetry are respectively disposed on the left and right sides of each slope tool 3. Jacks are respectively arranged on the two lateral supports 6 which are symmetrical with each other in the left-right direction, and the vertical outer side wall of the gusset plate 1 is supported by the jacks, so that the gusset plate 1 with the vertical upper end face of the slope tool 3 is prevented from inclining and turning outwards.
In the above embodiment, further: the slope tool 3 is of a box-type structure with a right-angled trapezoid longitudinal section, and a box-type high-side box plate 301 of the right-angled trapezoid is fixedly installed in the center of the upper end face of the special jig frame 5; an upper bottom box plate 302 and a lower bottom box plate 303 in the right-angle trapezoid box type are vertically arranged in parallel at intervals left and right by taking the vertical center of the special jig frame 5 as a symmetry axis; the box type bevel edge box plate 304 of the right-angle trapezoid inclines upwards, and the bevel edge box plate 304 supports the bottom plate 4 in an inclined mode; the slope of the sloping box plate 304 coincides with the slope of the top plate 2 that the top plate 2 tilts when the gusset plate 1 is rotated to be vertical. So as to keep the gusset plate 1 in a vertical and vertical state, thereby enabling the rapid insertion of the top plate notch.
In the above embodiment, further: the slope tool 3 is of a box-shaped structure with a right-angled trapezoid longitudinal section; be equipped with a plurality of strengthening ribs for support that are used for preventing the box deformation in the box of slope frock 3 to guarantee sufficient support intensity.
In the above embodiment, further: the lateral support 6 is a right-angled triangle frame type support structure which is made by welding profile steel, and a right-angled side I601 of the right-angled triangle frame is horizontally arranged and is attached to the horizontal upper end face of the special jig frame 5 into a whole; the other right-angle side II 602 of the right-angle triangular frame is perpendicular to the horizontal upper end surface of the special jig frame 5 and is arranged adjacent to the vertical gusset plate 1 (in combination with the figure 4).
The working principle of the invention is as follows: take the example of the chord member of the four-bridge main bridge in the south of the Australian province as an example. The structural form of the chord longitudinal beam is a parallelogram structure and is inwards inclined, and the gusset plate 1 penetrates into the groove 201 of the top plate 2 in an assembling and connecting mode. The profile dimensions of the assembled chord member are about: 1.8m wide, X4.9m high, X16m long, weighing about 56 tons. By adopting the manufacturing technology of the inward-inclined penetrating gusset chord member, the geometric dimension and the weld quality of the chord member longitudinal beam are effectively ensured, and the production efficiency is greatly improved.
When the chord longitudinal beam is assembled, the special jig frame 5 is specially designed and manufactured, and the special jig frame 5 extends on the ground along the length direction of the top plate longitudinal beam. The slope tool 3 is a main tool for controlling the node board 1 to be vertical. When the top plate 2 of each chord member longitudinal beam is assembled, 6 slope tools 3 which are arranged below along the length direction of the top plate 2 are arranged in parallel at intervals, and correspond to the positions of each partition plate in the chord members, so that the slope tools 3 are ensured to support the rigidity of the chord members and prevent the support deformation.
When the chord box type member is assembled, the top plate 1 unit with the notch 201 is inserted along the actual position of the gusset plate 1, and the assembly of the chord box type member is completed. And then turning over the node plates in sequence, and welding different point positions in sequence one by one to obtain the inward-inclined type inserted node plate chord member. The manufacturing technology of the inward-inclined type penetrating gusset chord member solves the problem that the box-shaped deformation large angle of the chord member is difficult to guarantee, improves the production efficiency and obtains certain economic benefit.
In conclusion, practice proves that the technology for manufacturing the inward-inclined type penetrating gusset plate chord member can completely meet the requirement on chord member precision. More importantly, the requirements on geometric dimension and welding quality are met, the production efficiency is improved, and the method has high practical and popularization values. Can play a good reference role in the subsequent manufacturing process of similar chords.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. The manufacturing method of the inward-inclined type penetration gusset plate chord member is characterized by comprising the following steps of:
s001, manufacturing a slope tool: the slope of the slope tool (3) is consistent with the slope of the top plate (2) when the gusset plate (1) rotates to be vertical;
s002, numerically controlling the notch (201): setting a breakpoint with a fixed size length of A during numerical control programming, setting a breakpoint with a next size length of A at intervals of a fixed size B, and so on, and machining a notch (201) by adopting a breakpoint function of a numerical control machine;
s003, processing a notch slope: processing the section of the notch (201) into a V-shaped double-sided groove structure;
s004 and assembling: a slope tool (3) is padded at the bottom, the gusset plate (1) is vertically arranged in the ground, and the gusset plate (1) and the inner edge angle welding lines I and II of the bottom plate (4) are welded into a whole; hoisting the top plate (2) to connect the notch (201) of the top plate (2) with the vertical gusset plate (1) in an inserting manner to form a chord member;
s005, turning over and welding: turning the assembled chord members by 90 degrees in a vertical plane and then welding outer side welding seams III, IV and V; then turning the chord members 180 degrees in a vertical plane and welding symmetrical side welding seams VI, VII and VIII; then reset chord member in vertical plane turn over to original upright state, weld level position welding seam IX, X, XI, XII at last, obtain fashioned fall-in formula and penetrate the gusset plate chord member.
2. The method of manufacturing a canted penetrating gusset chord according to claim 1, wherein: the processing size and the process quantity of the notch (201) are increased by 6-10 mm on the standard size D.
3. The method of manufacturing a canted penetrating gusset chord according to claim 1, wherein: the inclination angles beta of the double-sided groove of the V-shaped double-sided groove structure of the section of the groove opening (201) are equal and are all 30-40 degrees; the weld joint fillable area S1 of the upper end groove in the V-shaped double-groove structure is larger than the weld joint fillable area S2 of the lower end groove.
4. The inward-inclining type penetration gusset chord member assembling tool used in the inward-inclining type penetration gusset chord member manufacturing method according to claims 1-3 is characterized in that: the tool is a slope tool (3); the slope tool (3) is fixedly arranged at the center of the upper end face of the special jig frame (5); the special jig frame (5) is horizontally and fixedly arranged on the ground; the vertical central line of the slope tool (3) is taken as a symmetry axis, and the left side and the right side of the upper end surface of the special jig frame (5) are respectively provided with lateral supports (6) which are symmetrical to each other in a left-right mode; jacks are respectively arranged on the two lateral supports (6) which are symmetrical to each other in the left-right direction, and the gusset plate (1) is supported by the jacks, so that the gusset plate (1) with the vertical upper end face of the slope tool (3) is prevented from inclining and turning outwards.
5. The assembly tooling of claim 4, wherein the assembly tooling comprises: the slope tool (3) is of a box-type structure with a right-angled trapezoid longitudinal section, and a right-angled trapezoid box-type high-side box plate (301) is fixedly installed in the center of the upper end face of the special jig frame (5); an upper bottom box plate (302) and a lower bottom box plate (303) in the right-angle trapezoid box type are vertically arranged in parallel at intervals left and right by taking the vertical center of the special jig frame (5) as a symmetry axis; the box type bevel edge box plate (304) of the right-angle trapezoid inclines upwards, and the bevel edge box plate (304) supports the bottom plate (4) in an inclined mode; the slope of the bevel-side box plate (304) is consistent with the slope of the top plate (2) when the gusset plate (1) is rotated to be vertical.
6. The assembly tooling of claim 4, wherein the assembly tooling comprises: the slope tool (3) is of a box-shaped structure with a right-angled trapezoid longitudinal section; and a plurality of reinforcing ribs for supporting for preventing the box from deforming are arranged in the box of the slope tool (3).
7. The assembly tooling of claim 4, wherein the assembly tooling comprises: the lateral support (6) is a right-angled triangle frame type support structure which is made by welding profile steel, and a right-angled side I (601) of the right-angled triangle frame is horizontally arranged and is jointed with the horizontal upper end surface of the special jig frame (5) into a whole; and the other right-angle side II (602) of the right-angle triangular frame is vertical to the horizontal upper end surface of the special jig frame (5) and is arranged adjacent to the vertical gusset plate (1).
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| CN202111335748.3A CN114029678A (en) | 2021-11-12 | 2021-11-12 | Manufacturing method of inward-inclined penetrating gusset plate chord member and assembling tool thereof |
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| CN202111335748.3A CN114029678A (en) | 2021-11-12 | 2021-11-12 | Manufacturing method of inward-inclined penetrating gusset plate chord member and assembling tool thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070242A (en) * | 2022-06-20 | 2022-09-20 | 中铁宝桥（扬州）有限公司 | Manufacturing method of steel box girder embedded with chord members |
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2021
- 2021-11-12 CN CN202111335748.3A patent/CN114029678A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070242A (en) * | 2022-06-20 | 2022-09-20 | 中铁宝桥（扬州）有限公司 | Manufacturing method of steel box girder embedded with chord members |
| CN115070242B (en) * | 2022-06-20 | 2024-02-09 | 中铁宝桥（扬州）有限公司 | Manufacturing method of steel box girder with embedded chord |
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