CN213268588U - Light steel roof truss with super-large span - Google Patents
Light steel roof truss with super-large span Download PDFInfo
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- CN213268588U CN213268588U CN202020753456.6U CN202020753456U CN213268588U CN 213268588 U CN213268588 U CN 213268588U CN 202020753456 U CN202020753456 U CN 202020753456U CN 213268588 U CN213268588 U CN 213268588U
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- roof truss
- lower chord
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Abstract
The utility model provides a super-large stride light steel roof truss, including lower chord, perpendicular web member, diagonal web member, horizon bar and upper chord, perpendicular web member and diagonal web member setting are on lower chord, it is two-layer at least to erect web member and diagonal web member, and the horizon bar setting is erecting between web member and the diagonal web member, the upper chord setting is at the top of erecting web member and diagonal web member, constitutes the roof truss through lower chord, perpendicular web member, diagonal web member, horizon bar and upper chord, the lower chord is the arc and upwards hunch-up, the lower chord is mouthful shaped steel, and the upper chord is H shaped steel, and by steel sheet welded fastening. Through using light-weight steel material to through multi-level composite construction, solve 75 m's span difficult problem, fill the structural blank of steel roof truss, and practice thrift the cost, reduce the cost, solved the great steel construction of span and can't implement and the too big problem of dead weight.
Description
Technical Field
The utility model relates to a housing construction field especially relates to a light steel roof truss is striden to extra-large.
Background
At present, the public building among the housing construction is mostly spacious structure, and the post distance is about 8 meters, and reinforced concrete structure is the frame, and the dead weight is heavier, uses the steel construction can reach 36 meters and strides for the traffic facilities toll station needs the super-large span of 75m, and the steel construction still can't be implemented the dead weight too big, needs with light steel construction, and hollow. Such a structure is inconvenient in installation, difficult in manufacturing due to a large span, and expensive in manufacturing due to a large span. Therefore, it is very important to solve the problems that the steel structure with large span cannot be implemented and the self weight is too large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art, the utility model aims at providing a light steel roof truss is striden to extra-large is through using light steel material to through multi-level composite construction, solve 75 m's span difficult problem, fill the structural blank of steel roof truss, and practice thrift the cost, reduce the cost, solved the great steel construction of span and can't implement and dead weight too big problem.
The utility model provides a super-large stride light steel roof truss, including lower chord, perpendicular web member, diagonal web member, horizon bar and upper chord, perpendicular web member and diagonal web member setting are on lower chord, it is two-layer at least to erect web member and diagonal web member, and the horizon bar setting is erecting between web member and the diagonal web member, the upper chord setting is at the top of erecting web member and diagonal web member, constitutes the roof truss through lower chord, perpendicular web member, diagonal web member, horizon bar and upper chord, the lower chord is the arc and upwards hunch-up, the lower chord is mouthful shaped steel, and the upper chord is H shaped steel, and by steel sheet welded fastening.
The further improvement lies in that: erect web member and diagonal web member and the junction of horizontal bar is provided with wrench movement locking clamping, through wrench movement locking clamping to erecting web member and diagonal web member and the firm in connection of horizontal bar.
The further improvement lies in that: the safety rope hook is arranged beside the twisting locking clamp and used for hanging a safety rope.
The further improvement lies in that: the lower end of the lower chord is provided with a detachable base, and the base is buried into the ground to support the whole roof truss.
The utility model also provides an installation method of especially big light steel roof truss of striding, the method step is as follows: the method comprises the following steps: mounting a lower chord, and mounting a first layer of vertical web members and inclined web members on the lower chord; step two: a first layer of horizontal rods are arranged at the upper ends of the first layer of vertical web members and the first layer of diagonal web members, and a second layer of vertical web members and the second layer of diagonal web members are arranged at the upper ends of the horizontal rods; step three: a second layer of horizontal rods are arranged at the upper ends of the second layer of vertical web members and the second layer of diagonal web members, and a third layer of vertical web members and the third layer of diagonal web members are arranged at the upper ends of the horizontal rods; step four: the upper ends of the third layer of vertical web members and the inclined web members are provided with a third layer of horizontal members, and the upper ends of the horizontal members are provided with a fourth layer of vertical web members and inclined web members; step five: and installing upper chords at the tops of the fourth layer of vertical web members and the fourth layer of inclined web members to complete building of the roof truss structure.
The further improvement lies in that: the lower chord member, the vertical web members and the diagonal web members are made of square steel with a mouth size of 200 multiplied by 10, and the upper chord member is made of H-shaped steel with a mouth size of 800 multiplied by 400 multiplied by 10.
The internode distance of the roof truss structure is 6818.2mm, namely 6818.2 x 11=75000mm, the internode number is 11, the height of the roof truss is 12896mm, the upper chord of the roof truss uses 800 x 400 x 10 x 14H-shaped steel roof truss lower chord steel, the web members comprise vertical web members, diagonal web members and horizontal members use 200 x 10-shaped steel, the elevation of the upper chord member of the roof truss is 5.890m, the ceiling height of the roof truss is 18.786m, the roof truss is internally provided with 11 lower chord members, 12 upper chord members, 38 vertical web members, 32 horizontal members, 35 diagonal web members, the total number is 128, the weight is 57 tons, the self weight is so large that the roof truss structure cannot be integrally hoisted, only can be hoisted by units for installation and welding, the assembling sequence is from bottom to top, and the detailed assembling sequence is: the lower chord → the first layer vertical, the diagonal web member → the second layer chord member, i.e. the horizontal tie rod → the second layer vertical, the diagonal web member → the third layer vertical diagonal web member → the fourth layer chord member → the fourth layer vertical, the diagonal web member → the upper chord member. The lower chord is arched by 45 mm.
All the rod bodies are manufactured by blanking after being decomposed by a CAD technology in a prefabricating and processing factory, the lower chord mouth section steel and the upper chord H-shaped steel are welded and formed by steel plates, and the qualified rod bodies leave the factory.
The electronic computer decomposes the roof truss and lofts according to the design drawing, makes the model, divides into 11 section faces according to the principle of saving material and being convenient for operate, adopts the special team machine team after the unloading respectively, in order to prevent upper and lower pterygoid lamina from producing the deformation, straightens on the special H shaped steel straightener, the intermediate member is decomposed by the electronic computer and is unloaded after drawing.
Utilize current road surface, after making level subaerial with "rice" style of calligraphy as the accurate team of unit, hoist and mount team unit and take one's place to the design position, so on safety and stability's basis, accelerated the construction progress.
When the upper chord H-shaped steel is installed, 2-3 sections of the ground are assembled and welded, starting from a west-side column, the section of the column is a 600X 600 rectangular column, the height of the column is reserved to be 36mm, a penetrating lug steel plate with the length of 760mm is connected with the column through a high-strength bolt, the steel plate is hoisted in place section by section to the east until the east-side column is closed, the elevation and the straightness are controlled at any time through visual inspection and a theodolite, the dragon swinging phenomenon is avoided, all connections are fusion penetration welding seams, and ultrasonic flaw detection is carried out.
Except for the connection of the light steel roof truss and the high-strength bolt of the column, steel pull ropes are arranged at the top of the column and at the position with the elevation of 16 meters on the east and west sides to tighten the light steel roof truss. The steel cable model is PS5-37 of 0 VM.
The light steel roof truss upper plate is colored heated board, fire-retardant benzene board promptly, and the composite sheet, heat preservation composite sheet leave the factory after by professional producer is compound, is a piece and does not have the specification board that the camber warp, and the seaming is pieced together during the installation, and the construction order is: laying floor → painting combined layer → laying fire-retardant polystyrene board → paving board. Laying a floor: the composite board bottom plate is a color steel plate which is 0.5mm thick and is formed by pressing ribs of 0.2mm on the upper surface, the color steel plate is laid on a purline of a roof truss, one end of the color steel plate is fixed on the purline by a rivet, the other end of the color steel plate is clamped by a fixture, the color steel plate is tensioned along the cambered surface by a chain block of 1 ton, and the color steel plate is fixed by a rivet. And (4) brushing the bonding layer, and uniformly brushing the bonding layer with bonding layer glue prepared by a manufacturer.
Paving a board: the panel gradually forms a radian along with the curved surface, and the panel is fixed on the purline by using the lengthened self-tapping screw.
The utility model has the advantages that: through using light-weight steel material to through multi-level composite construction, solve 75 m's span difficult problem, fill the structural blank of steel roof truss, and practice thrift the cost, reduce the cost, solved the great steel construction of span and can't implement and the too big problem of dead weight.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1-lower chord, 2-vertical web member, 3-diagonal web member, 4-horizontal member, 5-upper chord, 6-twisting locking clamp, 7-safety rope hook and 8-base.
Detailed Description
In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.
As shown in fig. 1, the embodiment provides a light steel roof truss with an extra large span, which includes a lower chord 1, a vertical web member 2, an oblique web member 3, a horizontal member 4 and an upper chord 5, wherein the vertical web member 2 and the oblique web member 3 are disposed on the lower chord 1, the vertical web member 2 and the oblique web member 3 are at least two layers, the horizontal member 4 is disposed between the vertical web member 2 and the oblique web member 3, the upper chord 5 is disposed at the top of the vertical web member 2 and the oblique web member 3, the roof truss is composed of the lower chord 1, the vertical web member 2, the oblique web member 3, the horizontal member 4 and the upper chord 5, the lower chord 1 is arc-shaped and arches upwards, the lower chord 1 is a mouth-shaped steel, and the upper chord 5 is an H-shaped steel, and is formed by welding steel plates. Erect web member 2 and oblique web member 3 and the junction of horizon bar 4 and be provided with wrench movement locking clamping 6, through wrench movement locking clamping 6 to erecting web member 2 and oblique web member 3 and the fastness of being connected of horizon bar 4. The safety rope hook 7 is arranged beside the twisting locking clamp 6, and the safety rope is hung through the safety rope hook 7. The lower end of the lower chord 1 is provided with a detachable base 8, and the base 8 is buried into the ground to support the whole roof truss.
The embodiment also provides an installation method of the extra-large span light steel roof truss, which comprises the following steps: the method comprises the following steps: mounting a lower chord, and mounting a first layer of vertical web members and inclined web members on the lower chord; step two: a first layer of horizontal rods are arranged at the upper ends of the first layer of vertical web members and the first layer of diagonal web members, and a second layer of vertical web members and the second layer of diagonal web members are arranged at the upper ends of the horizontal rods; step three: a second layer of horizontal rods are arranged at the upper ends of the second layer of vertical web members and the second layer of diagonal web members, and a third layer of vertical web members and the third layer of diagonal web members are arranged at the upper ends of the horizontal rods; step four: the upper ends of the third layer of vertical web members and the inclined web members are provided with a third layer of horizontal members, and the upper ends of the horizontal members are provided with a fourth layer of vertical web members and inclined web members; step five: and installing upper chords at the tops of the fourth layer of vertical web members and the fourth layer of inclined web members to complete building of the roof truss structure. The lower chord member, the vertical web members and the diagonal web members are made of square steel with a mouth size of 200 multiplied by 10, and the upper chord member is made of H-shaped steel with a mouth size of 800 multiplied by 400 multiplied by 10.
Claims (4)
1. A light steel roof truss of especially big stride which characterized in that: including lower chord member (1), erect web member (2), diagonal web member (3), horizon bar (4) and upper chord member (5), erect web member (2) and diagonal web member (3) and set up on lower chord member (1), erect web member (2) and diagonal web member (3) and be two-layer at least, and horizon bar (4) set up and be erecting between web member (2) and diagonal web member (3), upper chord member (5) set up at the topmost of erecting web member (2) and diagonal web member (3), through lower chord member (1), erect web member (2), diagonal web member (3), horizon bar (4) and upper chord member (5) and constitute the roof truss, lower chord member (1) is the arc and upwards hunch-up, lower chord member (1) is mouthful shaped steel, and upper chord member (5) are H shaped steel, and by steel sheet welded fastening.
2. A super span light steel roof truss as defined in claim 1 wherein: the connecting parts of the vertical web members (2), the inclined web members (3) and the horizontal rod (4) are provided with twisting locking clamps (6), and the connecting firmness of the vertical web members (2), the inclined web members (3) and the horizontal rod (4) is realized through the twisting locking clamps (6).
3. A super span light steel roof truss as defined in claim 2 wherein: safety rope hook (7) are arranged beside the twisting locking clamp (6), and a safety rope is hung through the safety rope hook (7).
4. A super span light steel roof truss as defined in claim 1 wherein: the lower end of the lower chord (1) is provided with a detachable base (8), and the base (8) is buried into the ground to support the whole roof truss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020753456.6U CN213268588U (en) | 2020-05-09 | 2020-05-09 | Light steel roof truss with super-large span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020753456.6U CN213268588U (en) | 2020-05-09 | 2020-05-09 | Light steel roof truss with super-large span |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213268588U true CN213268588U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020753456.6U Expired - Fee Related CN213268588U (en) | 2020-05-09 | 2020-05-09 | Light steel roof truss with super-large span |
Country Status (1)
| Country | Link |
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| CN (1) | CN213268588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485674A (en) * | 2020-05-09 | 2020-08-04 | 江苏省苏中建设集团股份有限公司 | Super-large span light steel roof truss and installation method thereof |
-
2020
- 2020-05-09 CN CN202020753456.6U patent/CN213268588U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485674A (en) * | 2020-05-09 | 2020-08-04 | 江苏省苏中建设集团股份有限公司 | Super-large span light steel roof truss and installation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |