CN103233584B - 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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- CN103233584B CN103233584B CN201310164981.9A CN201310164981A CN103233584B CN 103233584 B CN103233584 B CN 103233584B CN 201310164981 A CN201310164981 A CN 201310164981A CN 103233584 B CN103233584 B CN 103233584B
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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 the floor map of the half 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 to the reinforcement ridge 3 ' in the middle of upper chord, be connected to, web member 4 ' between lower chord, web member comprises vertical web member and oblique web member, top-bottom chord, web member is combined by both sides angle steel respectively and forms (angle steel only seeing wherein side in figure), each side angle steel of upper chord connects and composes by many, be 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 top-bottom chord, the two ends of lower chord are provided with bearing, bearing comprises base plate 7 ', horizontal strength plate 8 ' and vertical strength plate 9 ', wherein horizontal strength plate 8 ' and vertical strength plate 9 ' are provided with two pieces respectively, divide the both sides (only can see wherein side in figure) being located at junction plate.
In the steel roof truss molding construction of prior art, usually adopt imitative type reproducible methods to make steel roof truss, concrete manufacturing process is such: 1, on steel platform, release steel roof truss full pattern by 1:1, 2, by each junction plate, batten plate is placed to full pattern and draws fixed junction plate, in batten plate frame line, by upper, the wherein side angle steel of lower chord be placed in full pattern draw fixed upper, in lower chord line, and be positioned at junction plate, part above batten plate and junction plate, batten plate carries out spot welding to be fixed, the wherein side angle steel of each web member is placed to full pattern to be drawn in fixed web member line, and be positioned at junction plate, part above batten plate and junction plate, batten plate carries out spot welding to be fixed, so place according to full pattern and fix other as parts such as bearings, a face of the complete steel roof truss of assembling, 3, this steel roof truss face assembled in step 2 lifting is turned as loose tool, 4, on loose tool, repeat operation in step 2 form an identical one side steel roof truss, 5, the one side steel roof truss lifting upset will formed in step 4, on the angle steel of the parts such as top-bottom chord, each web member in the steel roof truss face be turned over, correspondence lays opposite side angle steel, and the part be positioned at by these angle steel above junction plate, batten plate is carried out spot welding with junction plate, batten plate and is fixed, make top-bottom chord, the both sides angle steel of each web member is all secured together with junction plate, thus form the steel roof truss of a Pin entirety, then, each angle steel in this face is welded completely with junction plate corresponding part, 6, the whole Pin steel roof truss lifting formed in step 5 is turned, each angle steel of the another side (the steel roof truss face namely formed in step 4) of this steel roof truss is welded completely with junction plate corresponding part, if roof truss has distortion after welding terminates, carry out correcting until qualified, so far complete the shaping of steel roof truss.
Said method complex steps, whole Pin roof truss can not be become by an assembling, but first make a face of steel roof truss, then this face roof truss is stood up, on this face roof truss, group forms whole Pin roof truss to another face of making, then could weld, and stands up another face of welding after completing the welding in this face again, every Pin roof truss manufacturing process needs secondary lifting to stand up, assembling at twice.
In group in process, when group is to complete steel roof truss face, steel roof truss is easily caused to be out of shape owing to entirely welding, and spot welding can only be carried out fix, can not implement to weld completely, welding could be implemented after one side roof truss upset group must be waited to form whole Pin roof truss to complete another side, owing to starting it is that indirect welding is shaping, rigidity after shaping is poor, and the forming method of prior art needs repeatedly to overturn when manufacturing every Pin roof truss, and it is right repeatedly to organize, in switching process, be more prone to cause distortion, and repeatedly overturn, also increase the expense of lifting appliance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of new steel roof truss one-step moulding method, and improving every Pin steel roof truss needs repeatedly group to the preparation method of repeatedly lifting by crane upset, reduces operation, reduces the usage charges of lifting appliance, accelerating construction progress.Meanwhile, increase the rigidity of steel roof truss, improve construction quality, provide a kind of steel roof truss one-time formed special loose tool simultaneously.
Steel roof truss one-step moulding method of the present invention, comprises the following steps:
A, make steel roof truss loose tool, steel platform is pressed 1:1 and releases full pattern, draw rubber-insulated wire in upper chord angle steel respectively, rubber-insulated wire in lower chord angle steel, the sideline, side of each road web member angle steel, each junction plate frame line, base-plate projection line, bearing horizontal strength plate projection line, bearing vertical strength plate projection line, each batten plate frame line, steel platform welds multiple support column, each described support column while to be resisted against in the angle steel that winds up in rubber-insulated wire or lower edge angle steel inside rubber-insulated wire, support column at a certain distance L1 along upper, the inner side distribution of rubber-insulated wire in lower edge angle steel, the length of support column meets base-plate and can directly install thereon, a welding reinforced column on the steel platform at the outer lateral extent support column one determining deviation L2 place of each support column, along each web member side wire bonding web member positioning on steel platform, every bar web member side wire bonding at least two web member positionings,
B, be anchored on support column by opening down respectively for the wherein side angle steel of the wherein side angle steel of upper chord and lower chord, an inner surface of angle steel supports on the support columns;
C, between reinforced column and the upper and lower chord member angle steel placed, put into steel contract, urgent, upper and lower chord member angle steel is fastened between support column and reinforced column respectively;
D, the upper chord angle steel centre ridge spot welding reinforcement angle steel placed, on the opening down inner surface being connected to the upper chord angle steel placed of described reinforcement angle steel;
E, junction plate, batten plate spoted weld on the upper chord angle steel and lower chord angle steel that place according to junction plate frame line, batten plate frame line;
F, by bearing be positioned at horizontal strength plate below junction plate and vertical strength plate spots weld on junction plate soffit according to projection line;
G, correspond to opening up respectively for the opposite side angle steel of the opposite side angle steel of upper chord, lower chord the upper and lower chord member angle steel placed, and spot weld and be clipped on junction plate between two angle steel and batten plate, and at another root reinforcement angle steel of the middle ridge spot welding of described upper chord opposite side angle steel, on the opening up inner surface being connected to described upper chord opposite side angle steel of described reinforcement angle steel;
H, by the wherein side angle steel of each web member near the opening down placement of web member positioning, and its end points is soldered on corresponding junction plate soffit, to the position spot welding batten plate that should have batten plate frame line on each web member, correspond to opening up for the opposite side angle steel of each web member on the web member angle steel that places again, and spot weld and be clipped on junction plate between two angle steel and batten plate;
I, by bearing be positioned at horizontal strength plate above junction plate, vertical strength plate spots weld on junction plate according to projection line, and is soldered on junction plate by base plate vertical point;
J, to being positioned at the top-bottom chord angle steel of upper surface, ridge reinforcement angle steel, each web member angle steel weld completely with each junction plate, batten plate, and after completing, the lifting demoulding is stood up and to be welded completely another side afterwards.
Steel roof truss one-step moulding method of the present invention, wherein said spacing L2 is at about 3cm.
Steel roof truss one-step moulding method of the present invention, wherein said spacing L1 is at about 1m.
The special loose tool of steel roof truss one-shot forming of the present invention, comprise rubber-insulated wire in the upper chord angle steel that to be drawn according to steel roof truss 1:1 setting-out on steel platform, rubber-insulated wire in lower chord angle steel, the sideline, side of each road web member angle steel, each junction plate frame line, base-plate projection line, bearing horizontal strength plate projection line, bearing vertical strength plate projection line, each batten plate frame line, steel platform is welded with multiple support column, each described support column while to be resisted against in the angle steel that winds up in rubber-insulated wire or lower edge angle steel inside rubber-insulated wire, support column at a certain distance L1 along upper, the inner side distribution of rubber-insulated wire in lower edge angle steel, the length of support column meet base-plate can directly thereon group to installation, the steel platform at the outer lateral extent support column one determining deviation L2 place of each support column is all welded with a reinforced column, also comprise steel contract, steel platform is connected to web member positioning along each web member side wire bonding, every bar web member side wire bonding at least two web member positionings.
The special 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 are towards identical, and one of them free end of each described support column angle steel to be resisted against in upper chord angle steel in rubber-insulated wire or lower chord angle steel inside rubber-insulated wire.
The special loose tool of steel roof truss one-shot forming of the present invention, wherein said web member positioning is angle steel, and 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, make steel roof truss can on loose tool once group to shaping, by the multiple support columns in loose tool, reinforced column and steel contract coordinate to be implemented to reinforce to steel roof truss, directly on loose tool, complete two sides group pair, and just stand up welding another side after entirely having welded one side upward, whole Pin steel roof truss only needs once to lift by crane upset, decrease and stand up the right number of times of group, decrease machinery expenses, decrease working procedure, accelerate construction speed, because roof truss loose tool has the function of reinforcing, group is reinforced on loose tool firmly to good steel roof truss, serve the effect controlling welding deformation, construction quality is improved while 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 loose tool of steel roof truss one-shot forming are described further.
Accompanying drawing explanation
Fig. 1 is the plane structure schematic diagram of the half of the symmetry of a Pin steel roof truss;
Fig. 2 is the plane structure schematic diagram of the half of the symmetry of the special loose tool of steel roof truss one-shot forming of the present invention;
Fig. 3 is the plane structure schematic diagram that in steel roof truss one-step moulding method of the present invention, steel roof truss is assembled into the half of overall symmetry on loose tool;
Fig. 4 is the sectional schematic diagram of A-A in Fig. 3;
Fig. 5 is that in steel roof truss one-step moulding method of the present invention, steel roof truss is assembled into overall side elevation view on loose tool.
Detailed description of the invention
Steel roof truss one-step moulding method of the present invention, comprises the following steps:
A, make steel roof truss loose tool, specific as follows, Fig. 2 is the floor map of loose tool, as shown in Figure 2, steel platform is pressed 1:1 and releases full pattern, draw rubber-insulated wire 1 in upper chord angle steel respectively, rubber-insulated wire 2 in lower chord angle steel, the sideline, side 4 of each road web member angle steel, each junction plate frame line 5, base-plate projection line 6, bearing horizontal strength plate projection line 7, bearing vertical strength plate projection line 8, each batten plate frame line (not shown in Fig. 2), steel platform welds multiple support column 9, support column 9 is angle steel, one of them free end of each support column angle steel to be resisted against in upper chord angle steel in rubber-insulated wire or lower chord angle steel inside rubber-insulated wire, support column 9 at a certain distance L1 along upper, the inner side distribution of rubber-insulated wire in lower edge angle steel, L1 is about 1m, the length of support column 9 meet base-plate can directly thereon group to installation, the steel platform at each support column 9 outer lateral extent support column one determining deviation L2 place welds a reinforced column 10, L2 is about 3cm, reinforced column 10 is angle steel, reinforced column angle steel and support column angle steel opening are towards identical, steel platform welds web member positioning 11 along each web member side line 4, 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, every bar web member side line 4 welds at least two web member positionings 11, 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.
Shown in composition graphs 3,4,5, the subsequent step of steel roof truss one-step moulding method of the present invention is described:
B, to be anchored to opening down respectively for the wherein side angle steel of the wherein side angle steel of upper chord 13 and lower chord 14 on support column 9, to make angle steel inner surface be supported on support column 9;
C, between reinforced column 10 and the upper and lower chord member angle steel placed, put into steel contract 12, urgent, make upper and lower chord member angle steel be fastened between support column 9 and reinforced column 10 respectively;
D, the upper chord angle steel centre ridge spot welding reinforcement angle steel 15 placed, on the opening down inner surface being connected to the upper chord angle steel placed of reinforcement angle steel;
E, junction plate 16, batten plate 17 spoted weld on the upper chord angle steel and lower chord angle steel that place according to junction plate frame line 5, batten plate frame line;
F, by bearing be positioned at horizontal strength plate 19 below junction plate and vertical strength plate 20 spots weld on junction plate soffit according to projection line;
G, correspond to opening up respectively for the opposite side angle steel of the opposite side angle steel of upper chord 13, lower chord 14 the upper and lower chord member angle steel placed, and spot weld and be clipped on junction plate 16 between two angle steel and batten plate 17, and at another root reinforcement angle steel of the middle ridge spot welding of upper chord opposite side angle steel, on the opening up inner surface being connected to upper chord opposite side angle steel of this another root reinforcement angle steel;
H, by the wherein side angle steel of each web member 3 near the opening down placement of web member positioning 11, and its end points is soldered to corresponding junction plate 16 soffit, to the position spot welding batten plate 17 that should have batten plate frame line on each web member 3, correspond to opening up for the opposite side angle steel of each web member 3 on the web member angle steel that places again, and spot weld and be clipped on junction plate 16 between two angle steel and batten plate 17;
I, by bearing to be positioned at above junction plate horizontal strength plate and vertical strength plate spots weld on junction plate upper surface according to projection line, and base plate 18 vertical point is soldered on junction plate;
J, to being positioned at the top-bottom chord angle steel of upper surface, ridge reinforcement angle steel, each web member angle steel weld completely with each junction plate, batten plate, and after completing, the lifting demoulding is stood up and to be welded completely another side afterwards.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Such as, 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 web member positioning also can adopt other materials such as elongate steel plate.
Claims (6)
1. a steel roof truss one-step moulding method, is characterized in that, comprises the following steps:
A, make steel roof truss loose tool, steel platform is pressed 1:1 and releases full pattern, draw rubber-insulated wire in upper chord angle steel respectively, rubber-insulated wire in lower chord angle steel, the sideline, side of each road web member angle steel, each junction plate frame line, base-plate projection line, bearing horizontal strength plate projection line, bearing vertical strength plate projection line, each batten plate frame line, steel platform welds multiple support column, each described support column while to be resisted against in the angle steel that winds up in rubber-insulated wire or lower edge angle steel inside rubber-insulated wire, support column at a certain distance L1 along upper, the inner side distribution of rubber-insulated wire in lower edge angle steel, the length of support column meets base-plate and can directly install thereon, a welding reinforced column on the steel platform at the outer lateral extent support column one determining deviation L2 place of each support column, along each web member side wire bonding web member positioning on steel platform, every bar web member side wire bonding at least two web member positionings,
B, be anchored on support column by opening down respectively for the wherein side angle steel of the wherein side angle steel of upper chord and lower chord, an inner surface of angle steel supports on the support columns;
C, between reinforced column and the upper and lower chord member angle steel placed, put into gad, urgent, upper and lower chord member angle steel is fastened between support column and reinforced column respectively;
D, the upper chord angle steel centre ridge spot welding reinforcement angle steel placed, on the opening down inner surface being connected to the upper chord angle steel placed of described reinforcement angle steel;
E, junction plate, batten plate spoted weld on the upper chord angle steel and lower chord angle steel that place according to junction plate frame line, batten plate frame line;
F, by bearing be positioned at horizontal strength plate below junction plate and vertical strength plate spots weld on junction plate soffit according to projection line;
G, correspond to opening up respectively for the opposite side angle steel of the opposite side angle steel of upper chord, lower chord the upper and lower chord member angle steel placed, and spot weld and be clipped on junction plate between two angle steel and batten plate, and at another root reinforcement angle steel of the middle ridge spot welding of described upper chord opposite side angle steel, on the opening up inner surface being connected to described upper chord opposite side angle steel of described reinforcement angle steel;
H, by the wherein side angle steel of each web member near the opening down placement of web member positioning, and its end points is soldered on corresponding junction plate soffit, to the position spot welding batten plate that should have batten plate frame line on each web member, correspond to opening up for the opposite side angle steel of each web member on the web member angle steel that places again, and spot weld and be clipped on junction plate between two angle steel and batten plate;
I, by bearing be positioned at horizontal strength plate above junction plate, vertical strength plate spots weld on junction plate according to projection line, and is soldered on junction plate by base plate vertical point;
J, to being positioned at the top-bottom chord angle steel of upper surface, ridge reinforcement angle steel, each web member angle steel weld completely with each junction plate, batten plate, and after completing, the lifting demoulding is stood up and to be welded completely another side afterwards.
2. steel roof truss one-step moulding method according to claim 1, is characterized in that: described spacing L2 is at about 3cm.
3. steel roof truss one-step moulding method according to claim 1 and 2, is characterized in that: described spacing L1 is at about 1m.
4. the special loose tool of steel roof truss one-shot forming, it is characterized in that: comprise rubber-insulated wire in the upper chord angle steel that to be drawn according to steel roof truss 1:1 setting-out on steel platform, rubber-insulated wire in lower chord angle steel, the sideline, side of each road web member angle steel, each junction plate frame line, base-plate projection line, bearing horizontal strength plate projection line, bearing vertical strength plate projection line, each batten plate frame line, steel platform is welded with multiple support column, each described support column while to be resisted against in the angle steel that winds up in rubber-insulated wire or lower edge angle steel inside rubber-insulated wire, support column at a certain distance L1 along upper, the inner side distribution of rubber-insulated wire in lower edge angle steel, the length of support column meet base-plate can directly thereon group to installation, the steel platform at the outer lateral extent support column one determining deviation L2 place of each support column is all welded with a reinforced column, this special loose tool also comprises multiple gad, steel platform is connected to web member positioning along each web member side wire bonding, every bar web member side wire bonding at least two web member positionings.
5. the special 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 are towards identical, and one of them free end of each described support column angle steel to be resisted against in upper chord angle steel in rubber-insulated wire or lower chord angle steel inside rubber-insulated wire.
6. the special loose tool of steel roof truss one-shot forming according to claim 5, is characterized in that: described web member positioning is angle steel, and 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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| 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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| 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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| CN103233584B true CN103233584B (en) | 2015-04-01 |
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| CN107297600B (en) * | 2017-06-30 | 2019-08-09 | 中建钢构有限公司 | The production method 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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| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07292986A (en) * | 1994-04-27 | 1995-11-07 | Fujita Corp | Device and method for constructing long-span roof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
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| 张平.浅谈火力发电厂管桁钢屋架的现场制作.《河南机电高等专科学校学报》.2009,第17卷(第3期), * |
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