CN111485674A - Super-large span light steel roof truss and installation method thereof - Google Patents
Super-large span light steel roof truss and installation method thereof Download PDFInfo
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- CN111485674A CN111485674A CN202010386065.XA CN202010386065A CN111485674A CN 111485674 A CN111485674 A CN 111485674A CN 202010386065 A CN202010386065 A CN 202010386065A CN 111485674 A CN111485674 A CN 111485674A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 title abstract description 9
- 238000010276 construction Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/38—Arched girders or portal frames
- E04C3/40—Arched girders or portal frames of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Abstract
The invention provides an extra-large span light steel roof truss and an installation method thereof, and the extra-large span light steel roof truss comprises a lower chord, a vertical web member, an oblique web member, a horizontal member and an upper chord, wherein the vertical web member and the oblique web member are arranged on the lower chord, the vertical web member and the oblique web member are at least two layers, the horizontal member is arranged between the vertical web member and the oblique web member, the upper chord is arranged at the top of the vertical web member and the oblique web member, the roof truss is formed by the lower chord, the vertical web member, the oblique web member, the horizontal member and the upper chord, the lower chord is arc-shaped and is arched upwards, the lower chord is a square steel, and the upper chord is an H-shaped steel and is formed by welding steel plates. 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 invention relates to the field of house building construction, in particular to a super-large span light steel roof truss and an installation method thereof.
Background
Roof trusses are classified into three types by material: wood roof truss, reinforced concrete roof truss and steel roof truss divide into triangle-shaped, arch, trapezoidal, combination formula, fenke formula according to structural style, divide into 10 according to the roof truss span: 9m, 12m, 15 m, 18 m, 21 m, 24 m, 27m, 30 m, 33 m, 36 m. The roof truss is widely applied to public building open environment, and is divided into two types in single-story industrial factory building again, and one type takes the crane, and two types do not have the crane, and the hoist and mount sharing in the construction need be solved when the roof truss sets up, involves the crane of hoist and mount again.
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.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a super-large span light steel roof truss and an installation method thereof, which solve the problem of 75m span by using light steel materials and adopting a multi-layer composite structure, fill up the blank of the steel roof truss structure, save the cost, reduce the manufacturing cost and solve the problems that the steel structure with larger span cannot be implemented and has overlarge self weight.
The invention provides a super-large span light steel roof truss which comprises a lower chord, a vertical web member, an inclined web member, a horizontal member and an upper chord, wherein the vertical web member and the inclined web member are arranged on the lower chord, the vertical web member and the inclined web member are at least two layers, the horizontal member is arranged between the vertical web member and the inclined web member, the upper chord is arranged at the top of the vertical web member and the inclined web member, the roof truss is formed by the lower chord, the vertical web member, the inclined web member, the horizontal member and the upper chord, the lower chord is arc-shaped and is arched upwards, the lower chord is a mouth-shaped steel, the upper chord is an H-shaped steel, and the lower chord and the upper chord are welded and formed by steel plates.
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 invention 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 further improvement is that the lower chord, the vertical web members and the diagonal web members are made of 200 × 200 × 10 square steel, and the upper chord is made of 800 × 400 × 10H-shaped steel.
The distance between the joints of the roof truss structure is 6818.2mm, namely 6818.2 × 11=75000mm, the number of the joints is 11, the height of the roof truss is 12896mm, the upper chord of the roof truss is 800 × 400 × 10 × 14H-shaped steel roof truss lower chord steel, the web members comprise vertical web members, the diagonal web members and the horizontal members are 200 × 200 × 10-shaped steel, the elevation of the upper chord member of the roof truss is 5.890m, the roof truss is indicated with a height of 18.786m, the roof truss is internally provided with 11 lower chord members, 12 upper chord members, 38 vertical web members, 32 horizontal members and 35 diagonal web members, the total weight is 128 tons, the weight is 57 tons, the self weight is large, the integral hoisting cannot be realized, only the lower chord members can be hoisted and installed and welded in a split unit mode, the assembling sequence is from bottom to top, the detailed assembling sequence is that the lower chord members → the first layer vertical web members, the diagonal web members → the second layer vertical web members → the third layer → the diagonal web members → the fourth layer → the vertical chord members → the upper chord members → the fourth layer → the diagonal web members.
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 on the ground are assembled and welded, starting from a west-side column, the section of the column is a 600 × 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 penetration welding lines, 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 invention uses high-strength light materials, uses square steel structures, is hollow, and is used as the materials of the lower chord member, the vertical web member and the diagonal web member, the whole span reaches 75m, and the self weight is more than 57 t.
A plurality of internodes are decomposed from 75m and welded on site, the upper chord member uses H-shaped steel to reduce the dead weight, the vertical web members are arranged into five layers, and the function is to solve the problem of 75m span. The middle part is not provided with a post, so that the cost is reduced.
The invention has the beneficial effects 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 view 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 further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the 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 of installing a lower chord, installing a first layer of vertical web members and inclined web members on the lower chord, installing a first layer of horizontal members at the upper ends of the first layer of vertical web members and inclined web members, installing a second layer of vertical web members and inclined web members at the upper ends of the horizontal members, installing a second layer of horizontal members at the upper ends of the second layer of vertical web members and inclined web members, installing a third layer of vertical web members and inclined web members at the upper ends of the horizontal members, installing a third layer of horizontal members at the upper ends of the third layer of vertical web members and inclined web members, installing a fourth layer of vertical web members and inclined web members at the upper ends of the horizontal members, installing upper chord members at the tops of the fourth layer of vertical web members and inclined web members, completing building of the roof truss structure, and manufacturing the lower inclined web members, the vertical web members and the inclined web members by using 200-shaped × square-shaped steels and 3683-shaped steel square-shaped steel tubes of 3683-shaped openings × H ×.
Claims (6)
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.
5. A method of installing extra large span light steel roof truss according to any one of claims 1-4 wherein: the method 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.
6. The method for installing extra large span light steel roof truss of claim 5 wherein the lower chords, vertical web members and diagonal web members are made of square steel with 200 × 200-200 × 10-square mouth shape, and the upper chords are made of 800 × 400-400 × 10H-shaped steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386065.XA CN111485674A (en) | 2020-05-09 | 2020-05-09 | Super-large span light steel roof truss and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010386065.XA CN111485674A (en) | 2020-05-09 | 2020-05-09 | Super-large span light steel roof truss and installation method thereof |
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| CN111485674A true CN111485674A (en) | 2020-08-04 |
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| CN202010386065.XA Pending CN111485674A (en) | 2020-05-09 | 2020-05-09 | Super-large span light steel roof truss and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854746A (en) * | 2021-01-13 | 2021-05-28 | 北京拓翌建筑工程有限责任公司 | Inverted hanging type supporting system for steel truss floor support plate and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095899U (en) * | 1991-07-18 | 1992-02-12 | 张玉珉 | Arched light steel tube room frame |
| JP2005009231A (en) * | 2003-06-20 | 2005-01-13 | Shimizu Corp | Method of constructing steel structure |
| CN2937298Y (en) * | 2006-07-24 | 2007-08-22 | 大庆油田建设集团 | Double upper edge steel roof truss |
| CN203867062U (en) * | 2014-06-09 | 2014-10-08 | 江西省电力设计院 | Trapezoid steel roof truss with hollowed-out chord members |
| CN206128297U (en) * | 2016-10-21 | 2017-04-26 | 天津大学建筑设计研究院 | Step multilayer arch truss |
| CN207405874U (en) * | 2017-10-16 | 2018-05-25 | 武汉迈特绿色建筑科技股份有限公司 | One kind is applied to light gauge cold-formed steel shape collar roof for building |
| CN109469258A (en) * | 2018-11-21 | 2019-03-15 | 南京工业大学 | A kind of lower edge uses the steel bamboo roof truss of round steel pipe |
| CN213268588U (en) * | 2020-05-09 | 2021-05-25 | 江苏省苏中建设集团股份有限公司 | Light steel roof truss with super-large span |
-
2020
- 2020-05-09 CN CN202010386065.XA patent/CN111485674A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095899U (en) * | 1991-07-18 | 1992-02-12 | 张玉珉 | Arched light steel tube room frame |
| JP2005009231A (en) * | 2003-06-20 | 2005-01-13 | Shimizu Corp | Method of constructing steel structure |
| CN2937298Y (en) * | 2006-07-24 | 2007-08-22 | 大庆油田建设集团 | Double upper edge steel roof truss |
| CN203867062U (en) * | 2014-06-09 | 2014-10-08 | 江西省电力设计院 | Trapezoid steel roof truss with hollowed-out chord members |
| CN206128297U (en) * | 2016-10-21 | 2017-04-26 | 天津大学建筑设计研究院 | Step multilayer arch truss |
| CN207405874U (en) * | 2017-10-16 | 2018-05-25 | 武汉迈特绿色建筑科技股份有限公司 | One kind is applied to light gauge cold-formed steel shape collar roof for building |
| CN109469258A (en) * | 2018-11-21 | 2019-03-15 | 南京工业大学 | A kind of lower edge uses the steel bamboo roof truss of round steel pipe |
| CN213268588U (en) * | 2020-05-09 | 2021-05-25 | 江苏省苏中建设集团股份有限公司 | Light steel roof truss with super-large span |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854746A (en) * | 2021-01-13 | 2021-05-28 | 北京拓翌建筑工程有限责任公司 | Inverted hanging type supporting system for steel truss floor support plate and construction method |
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