CN110206223A - A kind of enhanced lightgage steel joist truss of connection stiffness - Google Patents
A kind of enhanced lightgage steel joist truss of connection stiffness Download PDFInfo
- Publication number
- CN110206223A CN110206223A CN201910503887.9A CN201910503887A CN110206223A CN 110206223 A CN110206223 A CN 110206223A CN 201910503887 A CN201910503887 A CN 201910503887A CN 110206223 A CN110206223 A CN 110206223A
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- China
- Prior art keywords
- truss
- node
- enhanced
- boom
- steel joist
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
Abstract
A kind of enhanced lightgage steel joist truss of connection stiffness, including top boom, lower boom, the intermediate web elements between the top boom and lower boom are set between the top boom and lower boom and be set to perpendicular to the end web member of the top boom and lower boom, inside truss positioned at truss both ends, are cladded with gusset plate at the connecting node of each rod piece of the truss.The present invention is in the case where not increasing section height or reduction truss spacing, the problem of comfort level deficiency caused by the deflection deformation of truss connecting node rigidity greatly, under load action is small, and then the fundamental frequency for significantly improving truss structure is relatively low.
Description
Technical field
The invention belongs to building fields, and in particular to a kind of enhanced lightgage steel joist truss of connection stiffness.
Background technique
The construction of low layer light gauge cold-formed steel shape house is that a calculated result is accurate, industrial area degree height, energy conservation and environmental protection, applies
Work efficiently engineering-built technology, will be used wider and wider, project amount scale is growing day by day.Its main material is zinc-plated or plating
The Medium and low intensities steel bands such as aluminium zinc film Q235, Q345, and degree aluminum-zinc alloy film Q550 steel band are rolled into light gauge cold-formed steel shape, by certainly
The fasteners such as self-drilling screw, rivet are attacked to connect to form the components such as truss for carrying.
Light gauge cold-formed steel shape truss is the main bearing carrier of low-rise building.Existing light gauge cold-formed steel shape truss fabrication due to
Production technology reason can generate cutting to crimping in truss connecting node and weaken, and self tapping can also reduce connection from the connection for boring nail
The rigidity of node, although causing light gauge cold-formed steel shape Internal Force of Truss consistent with theory analysis, actural deflection deformation is much larger than reason
By calculated result, have to increasing section height to reduce deflection deformation, or reduce truss spacing.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of in not increasing section height or to reduce truss spacing
In the case of, the small enhanced lightgage steel joist truss of connection stiffness of the deflection deformation of truss connecting node rigidity greatly, under load action.
In order to solve the above technical problems, the enhanced lightgage steel joist truss of a kind of connection stiffness provided by the invention, including it is upper
Chord member, lower boom are set to positioned at truss both ends between the top boom and lower boom and perpendicular to the top boom and lower edge
The end web member of bar, the intermediate web elements being set to inside truss between the top boom and lower boom, each bar of the truss
Gusset plate is cladded at the connecting node of part.
Further, adjacent intermediate web elements form triangular structure with the top boom or lower boom two-by-two.
Further, the node of the end web member and the top boom constitutes two bar corner nodes, the two bars corner node
Gusset plate is the rectangular configuration that an angle is chamfering, and the chamfering is located on the inside of the truss, and the length of the bevel edge compares institute
It is slightly wide to state end web member, the width of the top boom.
Further, the node of the end web member and the adjacent intermediate web elements and lower boom constitutes three rod bearing sections
Point, the gusset plate of the three rod bearings node are the rectangular configuration that an angle is chamfering, and the chamfering is located on the web member.
Further, the top boom and the node of the adjacent two web members three, the lower boom and adjacent institute
The node for stating two web member threes constitutes three bar chord nodes, and the gusset plate of the three bars chord node is rectangular configuration.
Further, the spacing of the top boom or the three adjacent bar chord nodes on lower boom is less than 600mm.
Further, the node plate material is consistent with truss substrate, and thickness is less than or equal to the truss member
Thickness.
Further, the gusset plate is connect from nail is bored with truss member with staking or self tapping, and the gusset plate is to mark
The form pre-punching of quasi- part forms, and punching position is overlapped with the truss axis, every rod piece on the node and the point
For plate at least there are two profiled punching, die mould depth guarantees pull rivet head or self tapping from brill nail and truss flush with outer surface.
Further, the truss is in symmetrical structure along the vertical direction, assembled using two sides both ends double-sided symmetrical when assembled
Method.
The beneficial effects of the present invention are as follows: the present invention at the connecting node of each rod piece of lightgage steel joist truss by being cladded with
Gusset plate, it is relatively low to improve light gauge cold-formed steel shape truss tradition engineering method connection stiffness, truss overall stiffness decline, so as to cause purlin
The excessive problem of frame deflection deformation, and then the relatively low caused comfort level of fundamental frequency for significantly improving truss structure is insufficient
Problem.
Detailed description of the invention
The present invention is described in further detail with embodiment with reference to the accompanying drawing.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the gusset plate structural schematic diagram of two bar corner nodes and three rod bearing nodes of the invention.
Fig. 3 is the gusset plate structural schematic diagram of three bar chord nodes of the invention.
Specific embodiment
As shown in Figure 1, a kind of enhanced lightgage steel joist truss of connection stiffness, including top boom 1, lower boom 2, it is located at truss
Both ends be set between the top boom 1 and lower boom 2 and perpendicular to the end web member 3 of the top boom 1 and lower boom 2, be located at
The intermediate web elements 4 being set to inside truss between the top boom 1 and lower boom 2, two-by-two the adjacent intermediate web elements 4 with
The top boom 1 or lower boom 2 form triangular structure.Above-mentioned rod piece is crimping C89*40*10*1 light gauge cold-formed steel shape, institute
It states and is cladded with gusset plate 5 at the connecting node of each rod piece of truss, 5 material of gusset plate is consistent with truss substrate, and thickness
Less than or equal to the thickness of the truss member.The gusset plate 5 is connect from nail is bored with truss member with staking or self tapping,
The gusset plate 5 pre-punching in the form of standard component forms, and punching position is overlapped with the truss axis, every on the node
At least there are two profiled punching, die mould depth guarantees pull rivet head or self tapping from brill nail and truss outer surface for root rod piece and the contact plate
Concordantly.The truss is in symmetrical structure along the vertical direction, and two sides both ends double-sided symmetrical assembling method is used when assembled.
In conjunction with Fig. 1, Fig. 2, the node of the end web member 3 and the top boom 1 constitutes two bar corner nodes 6, two bar angle
The gusset plate of node 6 is the rectangular configuration that an angle is chamfering, and the chamfering is located on the inside of the truss, the length of the bevel edge
It spends slightly wider than the end web member 3, the width of the top boom 1.
In conjunction with Fig. 1, Fig. 2, the node of the end web member 3 and the adjacent intermediate web elements 4 and lower boom 2 constitutes three bars
Support node 7, the gusset plate of the three rod bearings node 7 are the rectangular configuration that an angle is chamfering, and the chamfering is located at described
On web member.
In conjunction with Fig. 1, Fig. 3, node, the lower boom 2 and the phase of the top boom 1 and adjacent two web members, 4 three
The node of adjacent two web members, 4 three constitutes three bar chord nodes 8, and the gusset plate of the three bars chord node 8 is rectangular configuration.Institute
The spacing for stating the three adjacent bar chord nodes 8 on top boom 1 or lower boom 2 is less than 600mm.
By being cladded with gusset plate at the connecting node of each rod piece of lightgage steel joist truss, light gauge cold-formed steel shape is improved
Truss tradition engineering method connection stiffness is relatively low, the decline of truss overall stiffness, so as to cause the excessive problem of truss deflection deformation, in turn
Significantly improve the problem of the relatively low caused comfort level deficiency of fundamental frequency of truss structure.
Above description is exemplary and not limiting.By above description skilled person realizes that originally
Many kinds of change and modification of invention, will also fall within the spirit and scope of the invention.
Claims (9)
1. a kind of enhanced lightgage steel joist truss of connection stiffness, including top boom, lower boom are set to described positioned at truss both ends
It is set on described between top boom and lower boom and perpendicular to the end web member of the top boom and lower boom, inside truss
Intermediate web elements between chord member and lower boom, which is characterized in that be cladded with node at the connecting node of each rod piece of the truss
Plate.
2. the enhanced lightgage steel joist truss of connection stiffness according to claim 1, which is characterized in that adjacent described two-by-two
Intermediate web elements form triangular structure with the top boom or lower boom.
3. the enhanced lightgage steel joist truss of connection stiffness according to claim 1, which is characterized in that the end web member and institute
The node of top boom to be stated, two bar corner nodes are constituted, the gusset plate of the two bars corner node is the rectangular configuration that an angle is chamfering,
The chamfering is located on the inside of the truss, and the length of the bevel edge is slightly wider than the end web member, the width of the top boom.
4. the enhanced lightgage steel joist truss of connection stiffness according to claim 1, which is characterized in that the end web member and phase
The node of the adjacent intermediate web elements and lower boom, constitutes three rod bearing nodes, and the gusset plate of the three rod bearings node is one
A angle is the rectangular configuration of chamfering, and the chamfering is located on the web member.
5. the enhanced lightgage steel joist truss of connection stiffness according to claim 1, which is characterized in that the top boom and phase
Node, the lower boom and the node of the adjacent two web members three of the adjacent two web members three constitutes three bar chord joints
Point, the gusset plate of the three bars chord node are rectangular configuration.
6. the enhanced lightgage steel joist truss of connection stiffness according to claim 5, which is characterized in that the top boom or under
The spacing of three adjacent bar chord nodes on chord member is less than 600mm.
7. the enhanced lightgage steel joist truss of connection stiffness according to claim 1, which is characterized in that the node plate material
It is consistent with truss substrate, and thickness is less than or equal to the thickness of the truss member.
8. the enhanced lightgage steel joist truss of connection stiffness described in -7 any one according to claim 1, which is characterized in that described
Gusset plate is connect from nail is bored with truss member with staking or self tapping, and gusset plate pre-punching in the form of standard component forms,
Punching position is overlapped with the truss axis, every rod piece on the node and the contact plate at least there are two profiled punching,
Die mould depth guarantees pull rivet head or self tapping from brill nail and truss flush with outer surface.
9. the enhanced lightgage steel joist truss of connection stiffness described in -7 any one according to claim 1, which is characterized in that described
Truss is in symmetrical structure along the vertical direction, and two sides both ends double-sided symmetrical assembling method is used when assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503887.9A CN110206223A (en) | 2019-06-12 | 2019-06-12 | A kind of enhanced lightgage steel joist truss of connection stiffness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503887.9A CN110206223A (en) | 2019-06-12 | 2019-06-12 | A kind of enhanced lightgage steel joist truss of connection stiffness |
Publications (1)
| Publication Number | Publication Date |
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| CN110206223A true CN110206223A (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910503887.9A Pending CN110206223A (en) | 2019-06-12 | 2019-06-12 | A kind of enhanced lightgage steel joist truss of connection stiffness |
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| CN (1) | CN110206223A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982142A (en) * | 2021-03-04 | 2021-06-18 | 北京工业大学 | Cold-formed thin-walled steel web plate combined PC box girder |
| CN113338533A (en) * | 2021-06-30 | 2021-09-03 | 杭州井格建筑科技有限公司 | Deformation control method for plate-type bidirectional bearing keel frame |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359187A (en) * | 2011-07-19 | 2012-02-22 | 筑巢（北京）科技有限公司 | 45 degrees beam and column combined buckling piece and light steel structure |
| CN202492933U (en) * | 2011-12-29 | 2012-10-17 | 筑巢（北京）科技有限公司 | T-shaped gusset plate and light steel structure thereof |
| CN202611304U (en) * | 2012-06-20 | 2012-12-19 | 中国石油天然气股份有限公司 | Welded truss structure for double-deck floating roof of large storage tank |
| CN103899026A (en) * | 2012-12-24 | 2014-07-02 | 上海钢之杰钢结构建筑有限公司 | Truss system used for cold-formed thin-walled steel structure |
| CN203782971U (en) * | 2014-01-15 | 2014-08-20 | 山东杭萧钢构有限公司 | Bracket-crane truss structure |
-
2019
- 2019-06-12 CN CN201910503887.9A patent/CN110206223A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359187A (en) * | 2011-07-19 | 2012-02-22 | 筑巢（北京）科技有限公司 | 45 degrees beam and column combined buckling piece and light steel structure |
| CN202492933U (en) * | 2011-12-29 | 2012-10-17 | 筑巢（北京）科技有限公司 | T-shaped gusset plate and light steel structure thereof |
| CN202611304U (en) * | 2012-06-20 | 2012-12-19 | 中国石油天然气股份有限公司 | Welded truss structure for double-deck floating roof of large storage tank |
| CN103899026A (en) * | 2012-12-24 | 2014-07-02 | 上海钢之杰钢结构建筑有限公司 | Truss system used for cold-formed thin-walled steel structure |
| CN203782971U (en) * | 2014-01-15 | 2014-08-20 | 山东杭萧钢构有限公司 | Bracket-crane truss structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982142A (en) * | 2021-03-04 | 2021-06-18 | 北京工业大学 | Cold-formed thin-walled steel web plate combined PC box girder |
| CN113338533A (en) * | 2021-06-30 | 2021-09-03 | 杭州井格建筑科技有限公司 | Deformation control method for plate-type bidirectional bearing keel frame |
| CN113338533B (en) * | 2021-06-30 | 2022-05-20 | 杭州井格建筑科技有限公司 | Deformation control method for plate type bidirectional bearing keel frame |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190906 |
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| RJ01 | Rejection of invention patent application after publication |