CN103233584A - Method and special forming die for one-step forming of steel roof truss - Google Patents
Method and special forming die for one-step forming of steel roof truss Download PDFInfo
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- CN103233584A CN103233584A CN2013101649819A CN201310164981A CN103233584A CN 103233584 A CN103233584 A CN 103233584A CN 2013101649819 A CN2013101649819 A CN 2013101649819A CN 201310164981 A CN201310164981 A CN 201310164981A CN 103233584 A CN103233584 A CN 103233584A
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Abstract
The invention relates to a method and a special forming die for one-step forming of a steel roof truss. The method comprises producing the special forming die for the one-step forming of the steel roof truss, arranging full patterns on a steel platform according to a ratio of 1:1 and drawing every forming die line; welding a plurality of supporting columns, reinforced columns and web member positioning gears on the steel platform referring to forming die lines and enabling the plurality of supporting columns and reinforced columns to match with steel wedges to fasten one side of the steel roof truss on the forming die; assembling the other side on the side to enable the steel roof truss to once achieve two-side assembly on the forming die; and turning over the other side to perform welding after completely welding an upward side. The method and the special forming die for the one-step forming of the steel roof truss have the advantages of enabling the integral framework of the steel roof truss to only need once lifting and turn-over; reducing times of turning over assembly, mechanical costs and construction processes; speeding up the construction progress; and enabling the construction quality of steel roof truss production to be improved at the same time due to the fact that the roof truss forming die has a reinforcement function to enable the assembled steel roof truss to be firmly reinforced on the forming die to play a role in controlling welding deformation.
Description
Technical field
The present invention relates to the realm of building construction, particularly relate to a kind of forming method of steel roof truss.
Background technology
In construction work, steel roof truss is common steel work, Fig. 1 is half floor map of the symmetry of a Pin steel roof truss, as shown in Figure 1, steel roof truss comprises upper chord 1 ', lower chord 2 ', be connected the middle reinforcement ridge 3 ' of upper chord, be connected, web member 4 ' between the lower chord, web member comprises vertical web member and oblique web member, last lower chord, web member constitutes (only can see the wherein angle steel of a side among the figure) by the both sides angle steel respectively, each side angle steel of upper chord connects and composes by many, fixedly connected with batten plate 6 ' by polylith junction plate 5 ' between the angle steel of both sides, each web member keeps affixed by junction plate 5 ' and last lower chord, the two ends of lower chord are provided with bearing, bearing comprises base plate 7 ', laterally strength plate 8 ' and vertically strength plate 9 ', wherein laterally strength plate 8 ' and vertical strength plate 9 ' are provided with two respectively, divide the both sides (only can see a wherein side among the figure) that are located at junction plate.
In the steel roof truss molding construction of prior art, adopt imitative type reproducible methods to make steel roof truss usually, concrete manufacturing process is such: 1, emit the steel roof truss full pattern by 1:1 on the steel platform; 2, with each junction plate, batten plate is placed to full pattern and draws fixed junction plate, in the batten plate frame line, to go up, a wherein side angle steel of lower chord be placed in the full pattern draw fixed on, in the lower chord line, and it is positioned at junction plate, part and the junction plate of batten plate top, batten plate carries out spot welding to be fixed, a wherein side angle steel of each web member is placed in the fixed web member line of full pattern picture, and it is positioned at junction plate, part and the junction plate of batten plate top, batten plate carries out spot welding to be fixed, so place according to full pattern and fix other as parts such as bearings, group is to a face of the intact steel roof truss of assembly unit; 3, this steel roof truss face lifting that assembles in the step 2 is turned as loose tool; 4, on loose tool in the repeating step 2 operation form an identical single face steel roof truss; 5, with the single face steel roof truss lifting upset that forms in the step 4, correspondence is laid the opposite side angle steel on the angle steel of parts such as lower chord, each web member on the steel roof truss face that is turned over, and the part that these angle steel are positioned at junction plate, batten plate top is carried out spot welding with junction plate, batten plate fix, make the both sides angle steel of going up lower chord, each web member all be secured together with junction plate, thereby form the steel roof truss of a Pin integral body, then, will weld fully at each angle steel and the junction plate counterpart of this face; 6, the whole Pin steel roof truss lifting that forms in the step 5 is turned, each angle steel and junction plate counterpart to the another side of this steel roof truss (being the steel roof truss face that forms in the step 4) weld fully, welding finishes the back if roof truss has distortion then to proofread and correct until qualified, so far finishes the moulding of steel roof truss.
The said method complex steps, can not once organize being assembled into whole Pin roof truss, but elder generation makes a face of steel roof truss, then this face roof truss is stood up, form whole Pin roof truss in this face roof truss group to making another face, could weld then, stand up another face of welding again after finishing the welding of this face, every Pin roof truss manufacturing process needs the secondary lifting to stand up, and organizes assembly unit at twice.
In organizing process, when group during to face of intact steel roof truss, because full weldering causes the steel roof truss distortion easily, fix and can only carry out spot welding, can not implement to weld fully, could implement welding after must waiting single face roof truss upset group that intact another side is formed whole Pin roof truss, because begin is the indirect welding moulding, rigidity after the moulding is relatively poor, and the forming method of prior art needs repeatedly upset when making every Pin roof truss, and it is right repeatedly to organize, in switching process, be more prone to cause distortion, and repeatedly overturn, also strengthened the expense of lifting appliance.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of new steel roof truss one-step moulding method, improves every Pin steel roof truss and need repeatedly organize repeatedly lifting by crane the preparation method of upset, reduces operation, reduces the usage charges of lifting appliance, accelerating construction progress.Simultaneously, increase the rigidity of steel roof truss, improve construction quality, provide a kind of steel roof truss one-time formed special-purpose loose tool simultaneously.
Steel roof truss one-step moulding method of the present invention may further comprise the steps:
A, make the steel roof truss loose tool, on the steel platform, emit full pattern by 1:1, rubber-insulated wire in the upper chord angle steel draws respectively, rubber-insulated wire in the lower chord angle steel, one side line of each road web member angle steel, each junction plate frame line, the base-plate projection line, the horizontal strength plate of bearing projection line, the vertical strength plate of bearing projection line, each batten plate frame line, at a plurality of support columns of steel platform welding, one side of each described support column is resisted against in the angle steel that winds up rubber-insulated wire inboard in rubber-insulated wire or the lower edge angle steel, support column at a certain distance L1 along last, the inboard of rubber-insulated wire distributes in the lower edge angle steel, the length of support column satisfies base-plate and can directly install thereon, reinforced column of the steel platform at lateral extent support column one determining deviation L2 place welding outside each support column, each web member side wire bonding connects the web member positioning in steel platform upper edge, and every web member side wire bonding is connected to few two web member positionings;
B, with the wherein side angle steel of the wherein side angle steel of upper chord and lower chord respectively opening be anchored to down on the support column, an inner surface of angle steel is supported on the support column;
C, between reinforced column and the upper and lower chord member angle steel that places, put into the steel contract, urgent, make upper and lower chord member angle steel be fastened on respectively between support column and the reinforced column;
D, in the middle of the upper chord angle steel that places reinforcement angle steel of ridge place's spot welding, described reinforcement angle steel opening is connected on the inner surface of the upper chord angle steel that places down;
E, spot weld junction plate, batten plate on the upper chord angle steel and lower chord angle steel that places according to junction plate frame line, batten plate frame line;
F, the horizontal strength plate that is positioned at junction plate below and the vertical strength plate of bearing spoted weld on the junction plate soffit according to projection line;
G, with the opposite side angle steel of the opposite side angle steel of upper chord, lower chord respectively opening correspond to the upper and lower chord member angle steel that places up, and spot weld and be clipped on two junction plates and batten plate between the angle steel, and at another root reinforcement angle steel of the middle ridge place's spot welding of described upper chord opposite side angle steel, described reinforcement angle steel opening is connected on the inner surface of described upper chord opposite side angle steel up;
H, a wherein side angle steel of each web member is placed down near web member positioning opening, and its end points is soldered on the junction plate soffit of correspondence, on each web member to the position spot welding batten plate of batten plate frame line should be arranged, opposite side angle steel opening with each web member corresponds on the web member angle steel that places up again, and spots weld and be clipped on two junction plates and batten plate between the angle steel;
I, the horizontal strength plate that is positioned at junction plate top of bearing, vertical strength plate are spoted weld on the junction plate according to projection line, and the base plate vertical point is soldered on the junction plate;
J, the last lower chord angle steel to being positioned at upper surface, ridge reinforcement angle steel, each web member angle steel and each junction plate, batten plate weld fully, and after finishing, the lifting demoulding is stood up the back another side is welded fully.
Steel roof truss one-step moulding method of the present invention, wherein said spacing L2 is about 3cm.
Steel roof truss one-step moulding method of the present invention, wherein said spacing L1 is about 1m.
The special-purpose loose tool of steel roof truss one-shot forming of the present invention, comprise according to steel roof truss 1:1 setting-out and be drawn in rubber-insulated wire in the upper chord angle steel on the steel platform, rubber-insulated wire in the lower chord angle steel, one side line of each road web member angle steel, each junction plate frame line, the base-plate projection line, the horizontal strength plate of bearing projection line, the vertical strength plate of bearing projection line, each batten plate frame line, be welded with a plurality of support columns on the steel platform, one side of each described support column is resisted against in the angle steel that winds up rubber-insulated wire inboard in rubber-insulated wire or the lower edge angle steel, support column at a certain distance L1 along last, the inboard of rubber-insulated wire distributes in the lower edge angle steel, the length of support column satisfies base-plate and can directly organize thereon installing, outside each support column, all be welded with a reinforced column on the steel platform at lateral extent support column one determining deviation L2 place, also comprise the steel contract, each web member side wire bonding of steel platform upper edge is connected to the web member positioning, and every web member side wire bonding is connected to few two web member positionings.
The special-purpose loose tool of steel roof truss one-shot forming of the present invention, wherein said support column and reinforced column are angle steel, described support column angle steel and reinforced column angle steel opening be towards identical, and one of them free end of each described support column angle steel is resisted against in the upper chord angle steel rubber-insulated wire inboard in rubber-insulated wire or the lower chord angle steel.
The special-purpose loose tool of steel roof truss one-shot forming of the present invention, wherein said web member positioning is angle steel, an outer side edges of each described web member positioning angle steel is resisted against on each web member side line.
Steel roof truss one-step moulding method difference from prior art of the present invention is that steel roof truss one-step moulding method of the present invention makes a kind of easy steel roof truss loose tool, steel roof truss can once be organized moulding on loose tool, by a plurality of support columns in the loose tool, reinforced column and steel contract cooperate to be implemented to reinforce to steel roof truss, it is right directly to finish the two sides group at loose tool, and just stand up the welding another side after the full one side of having welded up, whole Pin steel roof truss only needs once lifting upset, reduced and stood up the right number of times of group, reduced machinery expenses, reduced working procedure, accelerated construction speed, because the roof truss loose tool has the function of reinforcing, group is reinforced on loose tool firmly to good steel roof truss, played the effect of control welding deformation, improve construction quality when making steel roof truss be produced on accelerating construction progress.
Below in conjunction with accompanying drawing steel roof truss one-step moulding method of the present invention and the special-purpose loose tool of steel roof truss one-shot forming are described further.
Description of drawings
Fig. 1 is half plane structure schematic diagram of the symmetry of a Pin steel roof truss;
Fig. 2 is half plane structure schematic diagram of the symmetry of the special-purpose loose tool of steel roof truss one-shot forming of the present invention;
Fig. 3 is assembled into half plane structure schematic diagram of whole symmetry at loose tool for steel roof truss in the steel roof truss one-step moulding method of the present invention;
Fig. 4 is the sectional schematic diagram of A-A among Fig. 3;
Fig. 5 is assembled into whole side elevation view for steel roof truss in the steel roof truss one-step moulding method of the present invention at loose tool.
The specific embodiment
Steel roof truss one-step moulding method of the present invention may further comprise the steps:
A, make the steel roof truss loose tool, specific as follows, Fig. 2 is the floor map of loose tool, as shown in Figure 2, on the steel platform, emit full pattern by 1:1, rubber-insulated wire 1 in the upper chord angle steel draws respectively, rubber-insulated wire 2 in the lower chord angle steel, one side line 4 of each road web member angle steel, each junction plate frame line 5, base-plate projection line 6, the horizontal strength plate of bearing projection line 7, the vertical strength plate of bearing projection line 8, each batten plate frame line (not shown among Fig. 2), at a plurality of support columns 9 of steel platform welding, support column 9 is angle steel, one of them free end of each support column angle steel is resisted against in the upper chord angle steel rubber-insulated wire inboard in rubber-insulated wire or the lower chord angle steel, support column 9 at a certain distance L1 along last, the inboard of rubber-insulated wire distributes in the lower edge angle steel, the about 1m of L1, the length of support column 9 satisfies base-plate and can directly organize thereon installing, reinforced column 10 of the steel platform at lateral extent support column one determining deviation L2 place welding outside each support column 9, the about 3cm of L2, reinforced column 10 is angle steel, reinforced column angle steel and support column angle steel opening are towards identical, each web member side line 4 welding web member positioning 11 in steel platform upper edge, web member positioning 11 is angle steel, an outer side edges of each web member positioning angle steel is resisted against on each web member side line 4, at least two web member positionings 11 of every web member side line 4 welding, the support column angle steel, reinforced column angle steel and web member positioning angle steel all adopt the leftover bits of steel roof truss to make and get final product.
Shown in Fig. 3,4,5, the subsequent step of steel roof truss one-step moulding method of the present invention is described:
B, with the wherein side angle steel of the wherein side angle steel of upper chord 13 and lower chord 14 respectively opening be anchored to down on the support column 9, an inner surface of angle steel is supported on the support column 9;
C, between reinforced column 10 and the upper and lower chord member angle steel that places, put into steel contract 12, urgent, make upper and lower chord member angle steel be fastened on respectively between support column 9 and the reinforced column 10;
D, in the middle of the upper chord angle steel that places reinforcement angle steel 15 of ridge place's spot welding, reinforcement angle steel opening is connected on the inner surface of the upper chord angle steel that places down;
E, spot weld junction plate 16, batten plate 17 on the upper chord angle steel and lower chord angle steel that places according to junction plate frame line 5, batten plate frame line;
F, the horizontal strength plate 19 that is positioned at junction plate below and the vertical strength plate 20 of bearing spoted weld on the junction plate soffit according to projection line;
G, with the opposite side angle steel of the opposite side angle steel of upper chord 13, lower chord 14 respectively opening correspond to the upper and lower chord member angle steel that places up, and spot weld and be clipped on two junction plates 16 and batten plate 17 between the angle steel, and at another root reinforcement angle steel of the middle ridge place's spot welding of upper chord opposite side angle steel, this another root reinforcement angle steel opening is connected on the inner surface of upper chord opposite side angle steel up;
H, a wherein side angle steel of each web member 3 is placed down near web member positioning 11 openings, and its end points is soldered to corresponding junction plate 16 soffits, on each web member 3 to the position spot welding batten plate 17 of batten plate frame line should be arranged, opposite side angle steel opening with each web member 3 corresponds on the web member angle steel that places up again, and spots weld and be clipped on two junction plates 16 and batten plate 17 between the angle steel;
I, with bearing be positioned at junction plate top laterally strength plate and vertical strength plate spot weld on the junction plate upper surface according to projection line, and base plate 18 vertical point are soldered on the junction plate;
J, the last lower chord angle steel to being positioned at upper surface, ridge reinforcement angle steel, each web member angle steel and each junction plate, batten plate weld fully, and after finishing, the lifting demoulding is stood up the back another side is welded fully.
Above-described embodiment is described preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
For example, support column, reinforced column and web member positioning also can adopt other material, must not adopt angle steel, and support column and reinforced column also can adopt steel plate, and the web member positioning also can adopt other materials such as strip steel plate.
Claims (6)
1. a steel roof truss one-step moulding method is characterized in that, may further comprise the steps:
A, make the steel roof truss loose tool, on the steel platform, emit full pattern by 1:1, rubber-insulated wire in the upper chord angle steel draws respectively, rubber-insulated wire in the lower chord angle steel, one side line of each road web member angle steel, each junction plate frame line, the base-plate projection line, the horizontal strength plate of bearing projection line, the vertical strength plate of bearing projection line, each batten plate frame line, at a plurality of support columns of steel platform welding, one side of each described support column is resisted against in the angle steel that winds up rubber-insulated wire inboard in rubber-insulated wire or the lower edge angle steel, support column at a certain distance L1 along last, the inboard of rubber-insulated wire distributes in the lower edge angle steel, the length of support column satisfies base-plate and can directly install thereon, reinforced column of the steel platform at lateral extent support column one determining deviation L2 place welding outside each support column, each web member side wire bonding connects the web member positioning in steel platform upper edge, and every web member side wire bonding is connected to few two web member positionings;
B, with the wherein side angle steel of the wherein side angle steel of upper chord and lower chord respectively opening be anchored to down on the support column, an inner surface of angle steel is supported on the support column;
C, between reinforced column and the upper and lower chord member angle steel that places, put into the steel contract, urgent, make upper and lower chord member angle steel be fastened on respectively between support column and the reinforced column;
D, in the middle of the upper chord angle steel that places reinforcement angle steel of ridge place's spot welding, described reinforcement angle steel opening is connected on the inner surface of the upper chord angle steel that places down;
E, spot weld junction plate, batten plate on the upper chord angle steel and lower chord angle steel that places according to junction plate frame line, batten plate frame line;
F, the horizontal strength plate that is positioned at junction plate below and the vertical strength plate of bearing spoted weld on the junction plate soffit according to projection line;
G, with the opposite side angle steel of the opposite side angle steel of upper chord, lower chord respectively opening correspond to the upper and lower chord member angle steel that places up, and spot weld and be clipped on two junction plates and batten plate between the angle steel, and at another root reinforcement angle steel of the middle ridge place's spot welding of described upper chord opposite side angle steel, described reinforcement angle steel opening is connected on the inner surface of described upper chord opposite side angle steel up;
H, a wherein side angle steel of each web member is placed down near web member positioning opening, and its end points is soldered on the junction plate soffit of correspondence, on each web member to the position spot welding batten plate of batten plate frame line should be arranged, opposite side angle steel opening with each web member corresponds on the web member angle steel that places up again, and spots weld and be clipped on two junction plates and batten plate between the angle steel;
I, the horizontal strength plate that is positioned at junction plate top of bearing, vertical strength plate are spoted weld on the junction plate according to projection line, and the base plate vertical point is soldered on the junction plate;
J, the last lower chord angle steel to being positioned at upper surface, ridge reinforcement angle steel, each web member angle steel and each junction plate, batten plate weld fully, and after finishing, the lifting demoulding is stood up the back another side is welded fully.
2. steel roof truss one-step moulding method according to claim 1, it is characterized in that: described spacing L2 is about 3cm.
3. steel roof truss one-step moulding method according to claim 1 and 2, it is characterized in that: described spacing L1 is about 1m.
4. the special-purpose loose tool of steel roof truss one-shot forming; it is characterized in that: comprise according to steel roof truss 1:1 setting-out being drawn in rubber-insulated wire in the upper chord angle steel on the steel platform; rubber-insulated wire in the lower chord angle steel; one side line of each road web member angle steel; each junction plate frame line; the base-plate projection line; the horizontal strength plate of bearing projection line; the vertical strength plate of bearing projection line; each batten plate frame line; be welded with a plurality of support columns on the steel platform; one side of each described support column is resisted against in the angle steel that winds up rubber-insulated wire inboard in rubber-insulated wire or the lower edge angle steel; support column at a certain distance L1 along last; the inboard of rubber-insulated wire distributes in the lower edge angle steel; the length of support column satisfies base-plate and can directly organize thereon installing; outside each support column, all be welded with a reinforced column on the steel platform at lateral extent support column one determining deviation L2 place; this special use loose tool also comprises a plurality of steel contracts; each web member side wire bonding of steel platform upper edge is connected to the web member positioning, and every web member side wire bonding is connected to few two web member positionings.
5. the special-purpose loose tool of steel roof truss one-shot forming according to claim 4, it is characterized in that: described support column and reinforced column are angle steel, described support column angle steel and reinforced column angle steel opening be towards identical, and one of them free end of each described support column angle steel is resisted against in the upper chord angle steel rubber-insulated wire inboard in rubber-insulated wire or the lower chord angle steel.
6. the special-purpose loose tool of steel roof truss one-shot forming according to claim 5, it is characterized in that: described web member positioning is angle steel, an outer side edges of each described web member positioning angle steel is resisted against on each web member side line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310164981.9A CN103233584B (en) | 2013-05-07 | 2013-05-07 | Method and special forming die for one-step forming of steel roof truss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164981.9A CN103233584B (en) | 2013-05-07 | 2013-05-07 | Method and special forming die for one-step forming of steel roof truss |
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| CN103233584A true CN103233584A (en) | 2013-08-07 |
| CN103233584B CN103233584B (en) | 2015-04-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107297600A (en) * | 2017-06-30 | 2017-10-27 | 中建钢构有限公司 | The preparation method and high-strength bolt hole group's truss of high-strength bolt hole group's truss |
| CN111927122A (en) * | 2020-09-15 | 2020-11-13 | 山东鲁能光大钢结构有限公司 | Laser positioning detection device for steel corbels |
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| JPH07292986A (en) * | 1994-04-27 | 1995-11-07 | Fujita Corp | Device and method for constructing long-span roof |
| CN201704801U (en) * | 2010-06-29 | 2011-01-12 | 佛山市中辰钢结构有限公司 | Steel pipe truss and H-shaped steel column connecting member |
| CN203247848U (en) * | 2013-05-07 | 2013-10-23 | 中国化学工程第三建设有限公司 | Molding bed for steel roof truss one-time forming |
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2013
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| JPH07292986A (en) * | 1994-04-27 | 1995-11-07 | Fujita Corp | Device and method for constructing long-span roof |
| CN201704801U (en) * | 2010-06-29 | 2011-01-12 | 佛山市中辰钢结构有限公司 | Steel pipe truss and H-shaped steel column connecting member |
| CN203247848U (en) * | 2013-05-07 | 2013-10-23 | 中国化学工程第三建设有限公司 | Molding bed for steel roof truss one-time forming |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107297600A (en) * | 2017-06-30 | 2017-10-27 | 中建钢构有限公司 | The preparation method and high-strength bolt hole group's truss of high-strength bolt hole group's truss |
| CN111927122A (en) * | 2020-09-15 | 2020-11-13 | 山东鲁能光大钢结构有限公司 | Laser positioning detection device for steel corbels |
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| CN103233584B (en) | 2015-04-01 |
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