CN111749344A - Connecting structure of truss and support - Google Patents
Connecting structure of truss and support Download PDFInfo
- Publication number
- CN111749344A CN111749344A CN202010548765.4A CN202010548765A CN111749344A CN 111749344 A CN111749344 A CN 111749344A CN 202010548765 A CN202010548765 A CN 202010548765A CN 111749344 A CN111749344 A CN 111749344A
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- China
- Prior art keywords
- truss
- support
- box body
- lower chord
- chord steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
- E04B1/585—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form with separate connection devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the field of connection structures of trusses and supports, and provides a connection structure of a truss and a support, which comprises: the device comprises a truss, a box body for supporting the truss and brackets arranged on two sides of the box body; the box body is provided with a web plate and a ribbed plate for supporting a lower chord steel pipe of the truss; the bracket is provided with a fixed end and an arch support end, the fixed end is connected with the web, and the arch support end is a bevel edge which extends from bottom to top in an inclined way in the direction away from the web. The invention not only utilizes the box body consisting of the web plate and the rib plate as the main body for supporting the lower chord steel pipe of the truss, but also is provided with the bracket connected with the web plate, thereby effectively converting partial pressure applied by the truss into horizontal thrust directed to the inner side of the web plate and greatly reducing the pressure of the box body in the vertical direction. Meanwhile, the arch support end of the bracket is gradually inclined from bottom to top, so that the problem of stress concentration of the arch support end is effectively solved, and the connection strength of the truss and the support is greatly enhanced.
Description
Technical Field
The invention relates to the field of connection structures of trusses and supports.
Background
The truss is one of key components of a giant column structure and is widely applied to the construction of various large stadiums. The function of the floor slab is mainly two-point, and the floor slab is used as a conversion component of a floor slab system; and secondly, all the giant columns are connected to form a lateral force resisting system to resist load together, so that the integral rigidity of the structure is increased. During specific application, the lower chord of truss can utilize antidetonation ball pivot support to connect self in the top of concrete strength nature post, through the analysis discovery of collapsing in succession to this type of building, though can not arouse overall structure's collapse in succession when the single structure of truss became invalid, but when its large tracts of land became invalid, the counter-force of the antidetonation ball pivot support of neighbouring truss connection can increase by a wide margin, consequently, the node design of antidetonation ball pivot support and truss is very important, the box bracket that uses vertical setting at present is as the main connection structure of antidetonation ball pivot support and truss more, thereby the problem of stress concentration appears easily in the box bracket of this kind of vertical setting influences the joint strength of antidetonation ball pivot support and truss.
Disclosure of Invention
In order to overcome the problems in the prior art, the application provides the connection structure of the truss and the support, the connection structure greatly strengthens the connection strength of the truss and the support, and the continuous collapse resistance is strong.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a connecting structure of a truss and a support, which comprises: the truss structure comprises a truss, a box body used for supporting the truss and brackets arranged on two sides of the box body;
the box body is provided with a web plate and a rib plate and is used for supporting the lower chord steel pipe of the truss;
the bracket, the bracket is equipped with the stiff end and arches and props the end, the stiff end with the web is connected, it is from bottom to top to arch to prop the end the hypotenuse that the slope of web direction extends.
Furthermore, a reinforcing plate for supporting the lower chord steel pipe is further arranged in the box body, the reinforcing plate is parallel to the web plate, and two ends of the reinforcing plate are connected to the middle of the ribbed plate.
Further, the top end of the reinforcing plate extends into the lower chord steel pipe to limit the lower chord steel pipe.
Furthermore, the reinforcing plate comprises a supporting end and a connecting end which are integrally formed, the supporting end is arranged in the box body and is connected with the ribbed plate, and the length of the connecting end is greater than that of the supporting end and is connected into the lower chord steel pipe.
Furthermore, an annular partition plate is further arranged in the lower chord steel pipe and corresponds to the box body.
Furthermore, the annular partition plates are multiple and are distributed at equal intervals.
Further, the brackets are connected in pairs to webs on both sides of the box body.
Furthermore, the brackets are provided with a plurality of pairs, and the pairs of brackets are distributed at equal intervals.
Further, the included angle between the bracket arch supporting end and the support mounting surface is 65-75 degrees.
Further, the height of the fixed end is lower than the horizontal bisector of the lower chord steel pipe.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
the invention not only utilizes the box body consisting of the web plate and the rib plate as the main body for supporting the lower chord steel pipe of the truss, but also is provided with the bracket connected with the web plate, thereby effectively converting partial pressure applied by the truss into horizontal thrust directed to the web plate and greatly reducing the pressure of the box body in the vertical direction. Meanwhile, the arch support end of the bracket is gradually inclined from bottom to top, so that the problem of stress concentration of the arch support end is effectively solved, and the connection strength of the truss and the support is greatly enhanced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is an axial view of a truss to brace connection provided by one embodiment of the present invention;
FIG. 2 is a radial schematic view of a truss to brace connection provided by one embodiment of the present invention;
1. a box body; 11. a web; 12. a rib plate; 13. a reinforcing plate; 131. a support end; 132. a connecting end; 2. a bracket; 21. a fixed end; 22. an arching end; 3. truss lower chord steel pipe; 31. an annular partition plate; 4. and (4) a support.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
As shown in the figures, the embodiment of the invention provides a connection structure of a truss and a support, which includes the truss, a box 1 for supporting the truss, and brackets 2 arranged on two sides of the box 1, wherein the box 1 is a cubic structure formed by webs 11 and rib plates 12 to support a truss lower chord steel pipe 3, specifically, the webs 11 on two sides of the box 1 are rectangular and are arranged along the axial direction of the truss lower chord steel pipe 3, the rib plates 12 are arranged along the radial direction of the truss lower chord steel pipe 3, and the top ends of the rib plates 12 are arc-shaped recesses. The pipe arc bottom circumference of the truss lower chord steel pipe 3 is adapted, so that the stress area is increased, and the supporting capacity is enhanced. Meanwhile, the rib plate 12 and the web plate 11 are rigidly connected to each other by welding, because the bottom of the steel tube is arc-shaped, and the pressure on the web plate is not vertically downward, but is inclined outward, so that a horizontal outward component force is generated on the web plate 11. Through the rigid connection of the rib 12 and the web 11, the rib 12 generates a horizontal inward pulling force on the web 11, thereby relieving the lateral pressure of the web 11 and preventing the web 11 from bending. In addition, the web 11 is further connected with a bracket 2 for assisting in supporting the truss lower chord steel tube 3, wherein the fixed end 21 of the bracket 2 is fixedly connected with the outer side of the web 11, and the upper section edge of the fixed end 21 is arc-shaped and is used for adapting to the bottom circumference arc surface of the truss lower chord steel tube 3, so that the bracket 2 can convert part of the oblique pressure from the truss lower chord steel tube 3 into a horizontal force pointing to the inner side of the web 11, so as to further resist the horizontal force generated by the truss lower chord steel tube 3 on the web 11, reduce the load of the connection point of the web 11, the ribbed plate 12 and the web 11, and greatly improve the connection strength of the truss and the support 4. Meanwhile, the embodiment of the invention also skillfully designs the arch support end 22 of the bracket 2 into an edge which extends obliquely from bottom to top in the direction away from the web 11, so that the angle between the arch support end 22 and the pressure direction of the truss lower chord steel tube 3 is reduced and is as close to 90 degrees as possible, thereby reducing the influence of stress concentration of the bracket 2 and strengthening the supporting capability of the bracket 2.
As shown in fig. 1 and 2, in some embodiments, a reinforcing plate 13 for supporting the truss lower chord steel tube 3 is further disposed in the box body 1, two ends of the reinforcing plate 13 are connected to the middle of the rib plate 12 and are arranged in parallel with respect to the web 11, and the top end of the reinforcing plate is connected to the bottom of the truss lower chord steel tube 3, so as to support the truss lower chord steel tube 3 and strengthen the overall connection strength. At the same time, the reinforcing plate 13 preferably rigidly connects both end sides to the rib plate 12 to enhance the bending resistance of itself.
As shown in fig. 1 and 2, in some embodiments, the top end of the reinforcing plate 13 extends into the truss lower chord steel pipe 3 to act as a limit and further enhance the connection strength.
As shown in fig. 1 and 2, in some embodiments, the reinforcing plate 13 includes a support end 131 and a connection end 132 which are integrally formed, the support end 131 is disposed in the box body 1 and connected to the rib 12, and the connection end 132 has a length greater than that of the support end 131 and is connected to the truss lower chord steel pipe 3, so as to improve stability and strength of connection by extending the connection length.
As shown in fig. 1 and 2, in some embodiments, an annular partition plate 31 is further coaxially disposed inside the truss lower chord steel tube 3, and an outer diameter of the annular partition plate 31 is the same as an inner diameter of the truss lower chord steel tube 3, so that the annular partition plate can be tightly connected with an inner wall of the truss lower chord steel tube 3. In particular, since each rod member on the truss is mainly subjected to axial compression force or tensile force, in order to save materials and reduce self weight, a pipe material is generally used as the rod member. However, when the truss is connected with the support 4, the weight of the truss is transmitted to the box body 1 and the bracket 2 through the truss bottom chord steel pipe 3, so that the body of the truss bottom chord steel pipe 3 also bears huge pressure, and the truss bottom chord steel pipe 3 is a hollow pipe structure, is weak in shearing resistance and is easy to break or collapse, if the truss bottom chord steel pipe 3 is broken or collapsed in practical application, the connection structure of the truss and the support 4 can be failed instantly no matter how large the bearing capacity of the box body 1 or the bracket 2 is, and serious consequences which cannot be saved are caused. The annular partition plate 31 effectively plays a role in supporting the internal structure of the truss lower chord steel tube 3, and directly transmits the pressure of a part of the truss to the box body 1 and the bracket 2 below the truss through the annular partition plate, so that the radial pressure on the truss lower chord steel tube 3 is greatly reduced, and the connection strength between the truss and the support 4 is further enhanced. In addition, because the radial bearing capacity of the pipe is too weak, a plurality of annular partition plates 31 distributed at equal intervals are preferably arranged to play a role in increasing the internal strength of the truss lower chord steel pipe 3. It should be noted that the reason why the plurality of annular partition plates 31 are distributed at equal intervals is to ensure the balance of stress and avoid the problem of stress concentration.
As shown in the drawings, in some embodiments, in order to ensure the stress balance, it is preferable to arrange the corbels 2 in pairs on the webs 11 at both sides of the case 1. In order to strengthen the connection effect, a plurality of pairs of brackets 2 distributed at equal intervals can also be arranged to bear the pressure from the truss together.
As shown in the figure, the included angle between the arch supporting end 22 of the bracket 2 and the mounting surface of the support 4 is preferably 65-75 degrees, so as to ensure that the angle between the arch supporting end 22 and the pressure direction of the truss lower chord steel pipe 3 is as close to 90 degrees as possible. Specifically, when the included angle between the arching end 22 of the bracket 2 and the installation surface of the support 4 is too large, the arching end 22 of the bracket 2 is closer to the vertical direction, the angle between the arching end 22 and the pressure direction of the truss lower chord steel tube 3 is larger, the bracket 2 can only convert a small part of pressure of the truss lower chord steel tube 3 into horizontal force pointing to the inner side of the web plate 11, so that the box body 1 and the bracket 2 bear more pressure from the vertical direction, the support 4 also bears larger pressure, the strengthening of the connection structure of the truss and the support 4 is not facilitated, the overall safety of the building is affected, meanwhile, the middle part of the arching end 22 can generate larger stress concentration, and the damage of the bracket 2 is easily caused. When the included angle between the arch end 22 of the bracket 2 and the mounting surface of the support 4 is too small, the arch end 22 of the bracket 2 is inclined more, the angle between the arch end 22 and the pressure direction of the truss lower chord steel pipe 3 is smaller, the bracket 2 can convert more pressure into horizontal force pointing to the inner side of the web plate 11, and the web plate 11 is damaged, meanwhile, because the area of the support 4 is limited, the lower end of the bracket 2 is usually smaller, and when the included angle between the arch end 22 of the bracket 2 and the mounting surface of the support 4 is too small, the horizontal force pointing to the inner side of the web plate 11 of the bracket 2 is concentrated on the horizontal force, and the web plate 11 or the bracket 2 at the position is easily damaged. Therefore, the included angle between the arching end 22 of the bracket 2 and the mounting surface of the support 4 is preferably 65-75 degrees. In addition, in order to better protect the web 11, the joint of the web 11 and the fixed end 21 of the bracket 2 may be thickened to further strengthen the connection strength between the truss and the support 4.
As shown in the figure, in some embodiments, the height of the contact point of the bracket 2 and the truss lower chord steel tube 3 is lower than the height of the horizontal bisector of the truss lower chord steel tube 3. Specifically, due to the main supporting function of the bracket 2, when the contact point of the bracket and the truss lower chord steel pipe 3 is too high, any gain effect on the support is not achieved, materials are wasted, the construction difficulty is increased, and the installation of other rod piece reinforcing plates on the truss is affected.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A connection structure of a truss and a support is characterized by comprising: the truss structure comprises a truss, a box body used for supporting the truss and brackets arranged on two sides of the box body;
the box body is provided with a web plate and a rib plate and is used for supporting the lower chord steel pipe of the truss;
the bracket, the bracket is equipped with the stiff end and arches and props the end, the stiff end with the web is connected, it is from bottom to top to arch to prop the end the hypotenuse that the slope of web direction extends.
2. The truss and support connecting structure as claimed in claim 1, wherein a reinforcing plate for supporting the lower chord steel tube is further provided in the box body, the reinforcing plate is parallel to the web, and both ends of the reinforcing plate are connected to the middle of the rib plate.
3. The truss-support connection structure as claimed in claim 2, wherein the top end of the reinforcing plate extends into the lower chord steel pipe to restrain the lower chord steel pipe.
4. The truss-support connection structure as claimed in claim 3, wherein the reinforcing plate comprises a support end and a connection end, the support end is disposed in the box body and connected to the rib plate, and the connection end has a length greater than that of the support end and is connected to the inside of the lower chord steel tube.
5. The truss and support connection structure as claimed in claim 1, wherein an annular partition is further provided in the lower chord steel pipe, and the annular partition is provided corresponding to the box body.
6. The truss and support connection structure as claimed in claim 5, wherein the annular partition plates are provided in plurality, and the plurality of annular partition plates are equally spaced.
7. The truss-and-brace connection structure as claimed in claim 1 wherein the corbels are connected in pairs to webs on both sides of the box.
8. The truss and support connection structure as claimed in claim 7, wherein the plurality of pairs of the corbels are equally spaced.
9. The truss to support connection structure as claimed in claim 1, wherein the angle between the corbel bar ends and the support mounting surface is 65 ° to 75 °.
10. The truss and support connection structure as claimed in claim 1, wherein the height of the fixed end is lower than the horizontal bisector of the lower chord steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548765.4A CN111749344A (en) | 2020-06-16 | 2020-06-16 | Connecting structure of truss and support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548765.4A CN111749344A (en) | 2020-06-16 | 2020-06-16 | Connecting structure of truss and support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111749344A true CN111749344A (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010548765.4A Pending CN111749344A (en) | 2020-06-16 | 2020-06-16 | Connecting structure of truss and support |
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| CN (1) | CN111749344A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622513A (en) * | 2021-08-11 | 2021-11-09 | 中国建筑第八工程局有限公司 | Inverted-gyro-shaped truss connecting system |
-
2020
- 2020-06-16 CN CN202010548765.4A patent/CN111749344A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622513A (en) * | 2021-08-11 | 2021-11-09 | 中国建筑第八工程局有限公司 | Inverted-gyro-shaped truss connecting system |
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