CN212427798U

CN212427798U - Truss structure

Info

Publication number: CN212427798U
Application number: CN202020600263.7U
Authority: CN
Inventors: 李瑞雄; 姜琦; 李亚明; 贾水钟; 刘大宇
Original assignee: Shanghai Architectural Design and Research Institute Co Ltd
Current assignee: Shanghai Architectural Design and Research Institute Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-01-29
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a truss structure, including two chords and web, two chord parallel arrangement, two the chord respectively welds on the both sides that the web is relative. Through using the web to replace the web member of traditional truss, make the web with the chord member can realize the transversal joint welding, has avoided traditional truss web member to need to pass through the welded problem mutually with the chord member, has reduced the welding degree of difficulty of truss structure to welded quality has been guaranteed. Meanwhile, the web plate has higher shearing rigidity and strength than the web member, so that the rigidity and strength of the truss structure can be greatly improved under the condition of equivalent steel consumption compared with the traditional truss, and the deflection generated when the truss structure bears vertical load is smaller, thereby meeting the requirements of certain structures on the rigidity, stability and height of the truss structure.

Description

Truss structure

Technical Field

The utility model relates to a building structure technical field especially relates to a truss structure.

Background

The truss structure is a lattice beam structure, and in actual engineering design, the truss structure has many engineering cases, including various types such as truss structures and space three-dimensional trusses. Although the existing truss structure design technology is mature, most truss structures adopt a mode of chord members and web members, namely a structural mode of arranging the web members between two chord members. When installing the truss structure of angle change between some chord member and the web member, because every web member tip is irregular, all need process alone, and the processing requirement that passes through the welded mutually needs to be satisfied in the connection between every web member and the chord member for the welding degree of difficulty increases, and the welding volume is big, and welding quality is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a truss structure, the web member replacement through with traditional truss is the steel sheet, has avoided needing to run through welded processing requirement mutually between steel sheet and the chord member, has reduced the welding degree of difficulty to welding quality has been improved.

In order to achieve the purpose, the utility model provides a truss structure, including two chords and web, two chord parallel arrangement, two the chord welds respectively on the both sides that the web is relative.

Optionally, the centre lines of the two chords lie in a plane parallel to the web surface.

Optionally, the width of the web in the direction perpendicular to the axial direction of the chord is between forty-one and twenty-one times the diameter of the chord.

Optionally, a plurality of stiffening ribs are symmetrically arranged at two ends of the web plate, and the stiffening ribs are perpendicular to the surface of the web plate.

Optionally, the stiffening ribs are arranged at equal intervals along the axial direction of the chord.

Optionally, an included angle between the axial direction of the stiffening rib and the axial direction of the chord is between 40 degrees and 50 degrees.

Optionally, the chord member includes a plurality of steel pipes of splicing along the axial, adjacent two the steel pipe passes through first connecting piece and connects, first connecting piece includes two ring flanges and a plurality of first bolt, two the ring flange is connected adjacent two respectively the tip of steel pipe, and two the ring flange passes through first bolted connection.

Optionally, the flange plate and the steel pipe are welded and fixed.

Optionally, the web includes a plurality of steel sheets of splicing along the chord member axial, adjacent two the steel sheet passes through the second connecting piece and connects, the second connecting piece includes connecting plate and a plurality of second bolt, the connecting plate is located adjacent two simultaneously the tip of steel sheet is surperficial, partly the second bolt runs through and connects connecting plate and one of them the steel sheet, another part the second bolt runs through and connects connecting plate and another the steel sheet.

Optionally, the connecting plates are arranged on two surfaces of the end of the steel plate.

The utility model provides a pair of among truss structure, including two chords and web, two chord parallel arrangement, two the chord respectively welds on the both sides that the web is relative. Through using the web to replace the web member of traditional truss, make the web with the chord member can realize the transversal joint welding, has avoided traditional truss web member to need to pass through the welded problem mutually with the chord member, has reduced the welding degree of difficulty of truss structure to welded quality has been guaranteed. Meanwhile, the web plate has higher shearing rigidity and strength than the web member, so that the rigidity and strength of the truss structure can be greatly improved under the condition of equivalent steel consumption compared with the traditional truss, and the deflection generated when the truss structure bears vertical load is smaller, thereby meeting the requirements of certain structures on the rigidity, stability and height of the truss structure.

Drawings

Fig. 1 is a front view of a truss structure provided in an embodiment of the present invention;

fig. 2 is a side view of a truss structure provided by an embodiment of the present invention;

fig. 3 is a front view of a truss structure splicing part provided by the embodiment of the present invention;

fig. 4 is a side view of a truss structure splicing part provided by the embodiment of the present invention;

wherein the reference numerals are:

10-a chord; 20-a web; 30-a stiffener;

100-a steel pipe; 110-flange plate; 120-a first bolt; 200-a steel plate; 210-a connecting plate; 220-second bolt.

Detailed Description

The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 and 2, the present embodiment provides a truss structure, which includes two chords 10 and a web 20, wherein the two chords 10 are disposed in parallel, and the two chords 10 are respectively welded to two opposite sides of the web 20.

Specifically, the truss structure can be used as a cross beam to form a roof load-bearing structure of buildings such as a natatorium, a gymnasium, a science and technology museum, and the like, and the roof load-bearing structure mainly bears vertical load. The chord member 10 may be a tubular structure, such as a steel pipe, or a non-tubular structure, such as a square steel pipe, H-shaped steel, channel steel, etc., and the present application does not limit this structure at all, and may be selected according to the factors such as the strength and rigidity required by the structure itself.

In this embodiment, the chords 10 are tubular structures, and the diameters, lengths and materials of the two chords 10 are the same. With reference to fig. 3 and 4, the chord member 10 includes a plurality of steel pipes 100 spliced in an axial direction, two adjacent steel pipes 100 are connected by a first connecting member, the first connecting member includes two flanges 110 and a plurality of first bolts 120, the two flanges 110 are respectively connected to the end portions of two adjacent steel pipes 100, and the two flanges 110 are connected by the first bolts 120. It can be understood that, with the progress of science and technology and the continuous development of building engineering technology, people have higher and higher requirements on the construction of building structures, and by carrying out sectional type and standardized prefabrication processing on the chord member 10 in a factory, only assembly and installation on site are needed, so that the construction efficiency is greatly improved, the noise pollution is reduced, and meanwhile, the construction quality is also ensured. And, for the long-span space structure, the sectional type assembling installation greatly reduces the welding amount and solves the construction cost.

In this embodiment, two adjacent steel pipes 100 are connected through the flanges 110 and the bolts, and during the specific operation, the two flanges 110 are welded to the ends of the two adjacent steel pipes 100 respectively, and this step can be performed in a factory, and then the welded steel pipes 100 are transported to a construction site, and the bolts are used to pass through the corresponding through holes on the two flanges 110, and then the nuts are used to connect the other side of the flanges 110 with the bolts, so that the construction process on the site is greatly simplified, and the construction progress is accelerated. It will be appreciated that the chord 10 of the present embodiment is of tubular construction and therefore employs the flange 110 for attachment. If the chord 10 is of other shapes, the connection can be made by using a corresponding plate structure, for example, if the chord 10 is made of steel, the flange 110 can be replaced by an end plate, and the connection of two chords 10 can be achieved. In this embodiment, the distribution and number of the through holes are not limited at all. In this embodiment, since the diameter of the flange 110 is larger than that of the chord member 10, a part of the flange 110 extends toward the web 20, and therefore, an arc-shaped notch is provided at a part of the web 20 that obstructs the flange 110 for receiving the flange 110.

With reference to fig. 1 and fig. 2, the web 20 is located between the two chords 10, and two opposite sides of the web 20 are respectively welded to the two chords 10. By using the web plate 20 to replace a web member of a traditional truss, the web plate 20 and the chord member 10 can realize straight seam welding, so that the problem that the web member of the traditional truss needs to meet the requirement of intersecting welding processing is avoided, the welding difficulty of the web plate 20 and the chord member 10 is reduced, and the welding quality is ensured. Meanwhile, because the web 20 has higher shearing rigidity and strength than the web member, the rigidity and strength of the truss structure can be greatly improved under the condition of equivalent steel consumption compared with the traditional truss, and the requirements of certain structures on the rigidity and stability of the truss structure are met. In addition, the truss structure using the web plate 20 has higher rigidity and strength, so that the deflection generated when the truss structure bears a vertical load is smaller, and therefore, the building structure with limitation on the height of the truss due to the building clear height or modeling requirement in engineering practice can be met. In this embodiment, the web 20 is made of steel and has a square structure. The thickness of the web 20 is not limited in this embodiment.

Optionally, the center lines of the two chords 10 are located in a plane parallel to the surface of the web 20, that is, the center lines of the two chords 10 are coplanar with the surface of the web 20, so as to better realize the common stress of the chords 10 and the web 20, and improve the rigidity of the truss structure. It is understood that the width of the web 20 in the embodiment perpendicular to the axial direction of the chord 10 is between forty to twenty times the diameter of the chord, and it is understood that the thickness of the web 20 is much smaller than the diameter of the chord 10, so as to facilitate the welding connection between the web 20 and the chord 10. In this embodiment, since the thickness of the web 20 is much smaller than the diameter of the chord member 10, a straight weld is formed between the web 20 and the chord member 10, thereby avoiding the problem that the chord member 10 and the web member need to be welded together in the conventional truss structure, reducing the welding difficulty, and ensuring the welding quality.

With reference to fig. 1 and fig. 2, a plurality of stiffening ribs 30 are symmetrically disposed at two ends of the web 20, and the stiffening ribs 30 are perpendicular to the surface of the web 20. Because the stress of the truss structure is mainly concentrated at the two ends of the truss structure, the shear rigidity and strength of the web 20 and the out-of-plane stability can be greatly improved by additionally arranging the stiffening ribs 30 at the two ends of the web 20, and further the shear rigidity, strength and rigidity of the truss structure are improved. In this embodiment, the stiffening ribs 30 are square steel plates symmetrically disposed at two ends of the web 20, and the plane of the stiffening ribs 30 is perpendicular to the plane of the web 20. Of course, the position of the stiffener 30 may be adjusted according to the direction and position of the concentrated load during construction. In this embodiment, the stiffeners 30 are equally spaced in the axial direction parallel to the chord 10 so as to uniformly improve the shear stiffness and strength and out-of-plane stability of the web 20. Of course, the present application does not impose any limitations on the number, location, and distribution of the stiffeners 30. In this embodiment, the number of the stiffeners 30 is 8, and 4 stiffeners 30 are respectively disposed on both sides of the web 20.

With continued reference to fig. 1, the angle between the axial direction of the stiffening rib 30 and the axial direction of the chord 10 is between 40 ° and 50 °. It can be understood that, since the angle between the force direction of the web 20 and the axial direction of the chord 10 is between 40 ° and 50 °, the stiffening rib 30 can be better used by making the angle between the axial direction of the stiffening rib 30 and the axial direction of the chord 10 between 40 ° and 50 °, and the stability of the web 20 is improved, and the specific angle can be determined according to the force applied to the web 20. In this embodiment, the angle between the projection of the stiffener 30 on the web 20 and the axial direction of the chord 10 is 45 °.

With reference to fig. 3 and 4, the web 20 includes a plurality of steel plates 200 spliced along the axial direction of the chord, two adjacent steel plates 200 are connected by a second connecting member, the second connecting member includes a connecting plate 210 and a plurality of second bolts 220, the connecting plate 210 is simultaneously located on the end surfaces of two adjacent steel plates 200, a portion of the second bolts 220 penetrates through and connects the connecting plate 210 and one of the steel plates 200, and another portion of the second bolts 220 penetrates through and connects the connecting plate 210 and the other steel plate 200. A plurality of second through holes are correspondingly formed in the connecting plate 210 and the end portions of the two steel plates 200, and second bolts 220 penetrate through the second through holes to respectively connect the connecting plate 210 and the two steel plates 200. The web 20 is assembled by connecting two adjacent steel plates 200 through a connecting plate 210. In this embodiment, the connecting plate 210 is a square steel plate 200, and half of the connecting plate is located one the end of the steel plate 200 and is attached to the end surface of the steel plate 200, and the other half is located the other the end of the steel plate 200 and is attached to the end surface of the steel plate 200, a plurality of second through holes are correspondingly arranged on the connecting plate 210 and the two ends of the steel plate 200, and the second bolts 220 penetrate through the through holes and are locked by nuts.

In this embodiment, the first bolt 120 and the second bolt 220 are both high-strength bolts, because the high-strength bolts are simpler to mount than ordinary bolts, and because the high-strength bolts are prestressed to bear loads, the stress performance is better, and the stability of connecting the two chords 10 can be ensured.

To sum up, the embodiment of the utility model provides a truss structure, including two chords and web, two chord parallel arrangement, two the chord welds respectively on the both sides that the web is relative. Through using the web to replace the web member of traditional truss, make the web with the chord member can realize the transversal joint welding, has avoided traditional truss web member to need to pass through the welded problem mutually with the chord member, has reduced the welding degree of difficulty of truss structure to welded quality has been guaranteed. Meanwhile, the web plate has higher shearing rigidity and strength than the web member, so that the rigidity and strength of the truss structure can be greatly improved under the condition of equivalent steel consumption compared with the traditional truss, and the deflection generated when the truss structure bears vertical load is smaller, thereby meeting the requirements of certain structures on the rigidity, stability and height of the truss structure.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. The utility model provides a truss structure, its characterized in that includes two chords and web, two chord parallel arrangement, two the chord respectively welds on the both sides that the web is relative, the chord includes a plurality of steel pipes along the axial concatenation, adjacent two the steel pipe passes through first connecting piece to be connected, first connecting piece includes two ring flanges and a plurality of first bolt, two adjacent two are connected respectively to the ring flange the tip of steel pipe, and two the ring flange passes through first bolted connection.

2. The truss structure of claim 1 wherein the centerlines of both chords lie in a plane parallel to the web surface.

3. The truss structure as claimed in claim 2 wherein said webs have a width in a direction perpendicular to the axial direction of said chords of between forty to twenty times the diameter of said chords.

4. The truss structure as claimed in claim 1 wherein the web is symmetrically provided at both ends with a plurality of stiffeners perpendicular to the surface of the web.

5. The truss structure as defined in claim 4 wherein a plurality of said stiffeners are equally spaced in the axial direction of said chords.

6. The truss structure as defined in claim 4 wherein the angle between the axial direction of the stiffening ribs and the axial direction of the chords is between 40 ° and 50 °.

7. The truss structure of claim 1 wherein the flanges are welded to the steel tubes.

8. The truss structure as claimed in claim 1 wherein said web comprises a plurality of steel plates joined along the axial direction of said chords, two adjacent ones of said steel plates being connected by a second connecting member, said second connecting member comprising a connecting plate and a plurality of second bolts, said connecting plate being simultaneously located on the end surfaces of two adjacent ones of said steel plates, a portion of said second bolts passing through and connecting said connecting plate to one of said steel plates, and another portion of said second bolts passing through and connecting said connecting plate to another of said steel plates.

9. A truss structure as defined in claim 8 wherein said webs are provided on both surfaces of said steel plate ends.