Round pipe and rectangular pipe combined section chord member for building pipe truss structure

Abstract

The utility model relates to a circular pipe and rectangular pipe combined section chord member for a building pipe truss structure, and relates to the technical field of steel structure truss.The circular pipe and rectangular pipe combined section chord member comprises a circular pipe section chord member, a rectangular pipe section chord member and a connecting assembly, and the two ends of the connecting assembly are connected with the circular pipe section chord member and the rectangular pipe section chord member correspondingly; and the connecting assembly is used for connecting the circular pipe section chord member and the rectangular pipe section chord member. The method has the effect of improving the reasonable utilization rate of materials.

Description

Technical Field

[0001] The present application relates to the technical field of steel structure trusses, and in particular to a combined circular and rectangular tube chord for a building pipe truss structure. Background Art

[0002] A pipe truss refers to a lattice structure composed of circular members connected to each other at the ends. It is widely used in many large-span venue buildings today, such as large public buildings like convention centers and stadiums.

[0003] Currently, general pipe truss structures mainly use a single type of member, for example, all circular pipes or all rectangular pipes, and are assembled by welding to provide compressive and flexural bearing capacities for the building.

[0004] However, due to the different magnitudes of forces and requirements for deformation control at different positions along the entire length of the chord, the suitable cross-sectional types are also different. A single type of member not only causes material waste but also increases the self-weight of the structure, thereby reducing the rational utilization rate of materials. Utility Model Content

[0005] In order to improve the rational utilization rate of materials, the present application provides a combined circular and rectangular tube chord for a building pipe truss structure.

[0006] The combined circular and rectangular tube chord for a building pipe truss structure provided by the present application adopts the following technical solution:

[0007] A combined circular and rectangular tube chord for a building pipe truss structure includes a circular tube cross-section chord, a rectangular tube cross-section chord, and a connecting component. The two ends of the connecting component are respectively connected to the circular tube cross-section chord and the rectangular tube cross-section chord, and the connecting component is used to connect the circular tube cross-section chord and the rectangular tube cross-section chord.

[0008] By adopting the above technical solution, since the circular tube cross-section chord has compressive, flexural, and torsional bearing capacities and the cross-sectional shape of the circular tube cross-section chord is uniform, the mechanical properties of the circular tube cross-section chord are stable. When bearing the load in the direction of gravity, the internal force at the circular tube cross-section chord is small, and the moment of inertia and stiffness of the circular tube cross-section are small; when the force in the chord is small, the circular tube cross-section chord is suitable for the parts with looser deformation control;

[0009] Since the rectangular tube cross-section chord can provide a larger cross-sectional area and better stiffness, it can enhance the overall stability of the structure. When bearing the load in the direction of gravity, the internal force at the rectangular tube cross-section chord is large, and the moment of inertia and stiffness of the cross-section are large; when the force in the chord is large, the rectangular tube cross-section chord is suitable for the parts with strict deformation requirements;

[0010] By combining chord members with two different cross-sectional forms, it is possible to achieve that the chord members of the combined cross-section of circular tubes and rectangular tubes bear basically the same stress at the same height along the length direction, and the deformation of the members meets the requirements, thereby effectively reducing the self-weight of the structure and then being easy to improve the reasonable utilization rate of materials.

[0011] Optionally, the connection assembly includes a connecting member, a first flange and a second flange. Two ends of the connecting member are respectively fixedly connected to one end of the chord member of the rectangular tube cross-section and the first flange; the second flange is fixedly connected to one end of the chord member of the circular tube cross-section; the first flange and the second flange are arranged opposite to each other and are fixedly connected by fasteners.

[0012] By adopting the above technical solution, by setting the connecting member, the connection requirements of members with different shapes and sizes can be adapted. Whether it is a chord member of a rectangular tube cross-section or a circular tube cross-section, they can be connected through appropriate connecting members and flanges, thereby expanding the application range of the device;

[0013] By firmly connecting the first flange and the second flange through fasteners, it can withstand greater pressure and tension, thereby providing higher connection strength and stability.

[0014] Optionally, the connecting member is in the shape of a right trapezoid. The wide end of the connecting member is fixedly connected to the end of the chord member of the rectangular tube cross-section, and the narrow end is fixedly connected to the end of the chord member of the circular tube cross-section. The narrow end of the connecting member extends towards the direction close to the chord member of the circular tube cross-section.

[0015] By adopting the above technical solution, since the shape of the connecting member is a right trapezoid, it can well adapt to the shape change from a rectangular tube to a circular tube. The wide end adapts to the larger cross-section of the rectangular tube, while the narrow end adapts to the smaller cross-section of the circular tube, realizing a smooth transition between two different-shaped pipe fittings;

[0016] At the same time, the design of the right trapezoid can better disperse and bear the pressure or tension from the chord member of the circular tube cross-section, enhancing the overall strength and stability of the connection.

[0017] Optionally, the chord member of the circular tube cross-section is made of seamless steel pipe.

[0018] By adopting the above technical solution, since there is no welding point inside the seamless steel pipe, the mechanical properties of the chord member of the circular tube cross-section are better, thereby being able to meet requirements such as high strength, high pressure, and high precision.

[0019] Optionally, the chord member of the rectangular tube cross-section is a welded component.

[0020] By adopting the above technical solution, since the welded components can firmly connect all parts of the chord member with a rectangular tube cross-section together to form an integral structure, it can provide relatively high structural stability and strength, thus making it easy to ensure that the entire structure remains stable and safe when bearing various external forces and loads.

[0021] Optionally, the fastener is a friction-type high-strength bolt.

[0022] By adopting the above technical solution, the friction-type high-strength bolt has very high strength and can bear large tensile and shear forces; in addition, the friction-type high-strength bolt generates plastic deformation at the joint through frictional heat, causing the material surfaces to adhere to each other, thereby achieving a self-locking effect;

[0023] By adopting the friction-type high-strength bolt, not only the strength and reliability of the connection are improved, but also it has good fatigue resistance, thereby enhancing the safety and stability of the connection.

[0024] Optionally, reinforcing ribs are fixedly connected between the first flange and the second flange and the connecting member and the chord member with a rectangular tube cross-section respectively.

[0025] By adopting the above technical solution, the reinforcing ribs provide additional support and reinforcement for the connection, making the entire connection assembly more robust, capable of withstanding greater external forces and loads, reducing the risk of deformation or damage caused by uneven or excessive stress, thereby enhancing the reliability and stability of the connection.

[0026] Optionally, anti-corrosion and fireproof materials are coated on both the chord member with a circular tube cross-section and the chord member with a rectangular tube cross-section.

[0027] By adopting the above technical solution, since the anti-corrosion and fireproof materials can resist corrosion and fire damage, the use of anti-corrosion and fireproof materials can significantly reduce the maintenance frequency and cost of the members, greatly reducing the damage and replacement frequency of the members, thereby reducing the maintenance cost.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. By providing the chord member with a circular tube cross-section, the chord member with a rectangular tube cross-section, and the connection assembly, it is possible to achieve that the stress magnitudes at the same height along the length direction of the combined chord member of the circular tube and the rectangular tube are basically the same, and the deformation of the member meets the requirements, thereby effectively reducing the structural self-weight and then being conducive to improving the reasonable utilization rate of materials;

[0030] 2. By providing the connecting member, the first flange, and the second flange, whether it is a rectangular tube cross-section or a circular tube cross-section, they can be connected through appropriate connecting members and flanges, thereby expanding the application range of the device;

[0031] 3. By setting the reinforcing ribs, the entire connection component becomes more robust, capable of withstanding greater external forces and loads, reducing the risk of deformation or damage caused by uneven or excessive stress, thereby enhancing the reliability and stability of the connection. Brief Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0033] Figure 2 is Figure 1 an enlarged view of part A in

[0034] Figure 3 is Figure 2 an enlarged view of part B in

[0035] Description of the Reference Numerals:

[0036] 1, circular tube cross-section chord; 2, rectangular tube cross-section chord; 3, connection component; 31, connecting piece; 32, first flange; 33, second flange; 34, fastener; 35, reinforcing rib. Detailed Description of the Embodiment

[0037] The following further elaborates on the present application in conjunction with the attached Figures 1-3 drawings.

[0038] An embodiment of the present application discloses a combined cross-section chord of a circular tube and a rectangular tube for a building pipe truss structure. Referring to Figure 1 , a combined cross-section chord of a circular tube and a rectangular tube for a building pipe truss structure includes a circular tube cross-section chord 1, a rectangular tube cross-section chord 2, and a connection component 3. The two ends of the connection component 3 are respectively connected to the circular tube cross-section chord 1 and the rectangular tube cross-section chord 2, and the connection component 3 is used to connect the circular tube cross-section chord 1 and the rectangular tube cross-section chord 2.

[0039] During use, the circular tube cross-section chord 1 and the rectangular tube cross-section chord 2 are respectively connected to the two ends of the connection component 3, achieving that the combined cross-section chord of the circular tube and the rectangular tube bears substantially the same stress magnitude at the same height along the length direction, and the deformation of the member meets the requirements, thereby effectively reducing the self-weight of the structure and further facilitating the improvement of the rational utilization rate of materials.

[0040] Referring to Figure 2 , the circular tube cross-section chord 1 is made of seamless steel pipe, and the rectangular tube cross-section chord 2 is a welded member. In the embodiment of the present application, the welded member is a steel member, and both the circular tube cross-section chord 1 and the rectangular tube cross-section chord 2 are coated with anti-corrosion and fire-proof materials.

[0041] Referring to Figure 1 、 Figure 2 and Figure 3, the connecting component 3 includes a connecting piece 31, a first flange 32 and a second flange 33. The connecting piece 31 is in the shape of a right trapezoid. The wide end of the connecting piece 31 is fixedly connected to the end of the chord member 2 of the rectangular pipe section, and the narrow end is fixedly connected to the first flange 32. The narrow end of the connecting piece 31 extends towards the direction close to the first flange 32.

[0042] Referring to Figure 2 and Figure 3 , the second flange 33 is fixedly connected to one end of the chord member 1 of the circular pipe section. The first flange 32 is arranged opposite to the second flange 33 and is fixedly connected by fasteners 34. There are multiple fasteners 34, and the multiple fasteners 34 are evenly arranged around the axis direction of the second flange 33.

[0043] In the embodiment of the present application, the fastener 34 is preferably a friction-type high-strength bolt. The friction-type high-strength bolt has very high strength and can withstand large tensile and shear forces; in other embodiments, the fastener 34 can also be a high-strength bearing-type bolt.

[0044] Referring to Figure 2 and Figure 3 , reinforcing ribs 35 are fixedly connected between the first flange 32 and the connecting piece 31 and between the second flange 33 and the chord member 2 of the rectangular pipe section respectively. There are four reinforcing ribs 35, and the four reinforcing ribs 35 are evenly arranged around the axis direction of the first flange 32 for one week. The reinforcing rib 35 is in the shape of a trapezoidal plate.

[0045] During use, one end of the connecting piece 31 is welded to the chord member 2 of the rectangular pipe section by butt weld, and the other end is welded to the first flange 32 by fillet weld. Then the second flange 33 is welded to the chord member 1 of the circular pipe section by fillet weld. Then the first flange 32 and the second flange 33 are connected by friction-type high-strength bolts, so that the structural self-weight can be effectively reduced, and thus it is easy to improve the reasonable utilization rate of materials.

[0046] The implementation principle of the circular pipe and rectangular pipe combined cross-section chord member for the building pipe truss structure in the embodiment of the present application is: one end of the connecting piece 31 is welded to the chord member 2 of the rectangular pipe section by butt weld, and the other end is welded to the first flange 32 by fillet weld. Then the second flange 33 is welded to the chord member 1 of the circular pipe section by fillet weld. Then the first flange 32 and the second flange 33 are connected by friction-type high-strength bolts. By combining two chord members with different cross-section forms, it can be realized that the circular pipe and rectangular pipe combined cross-section chord member can bear basically the same stress at the same height along the length direction, and the deformation of the member meets the requirements, so that the structural self-weight can be effectively reduced, and thus it is easy to improve the reasonable utilization rate of materials.

[0047] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure, characterized in that: The invention comprises a circular tube section chord bar (1), a rectangular tube section chord bar (2) and a connection assembly (3), wherein two ends of the connection assembly (3) are respectively connected to the circular tube section chord bar (1) and the rectangular tube section chord bar (2), and the connection assembly (3) is used to connect the circular tube section chord bar (1) and the rectangular tube section chord bar (2).

2. A chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 1, characterized in that: The connection assembly (3) comprises a connection piece (31), a flange plate 1 (32) and a flange plate 2 (33); two ends of the connection piece (31) are respectively fixedly connected to one end of the rectangular tube section chord (2) and the flange plate 1 (32); the flange plate 2 (33) is fixedly connected to one end of the circular tube section chord (1); the flange plate 1 (32) and the flange plate 2 (33) are arranged opposite to each other and are fixedly connected by a fastener (34).

3. A chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 2, characterized in that: The connecting piece (31) is in the shape of a right-angled trapezoid; the wide end of the connecting piece (31) is fixedly connected to the end of the rectangular tube section chord (2), and the narrow end is fixedly connected to the end of the circular tube section chord (1); the narrow end of the connecting piece (31) extends in a direction close to the circular tube section chord (1).

4. The chord rod of the combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 1, characterized in that: The circular tube cross-section chord (1) is made of a seamless steel tube.

5. The chord rod of the combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 1, characterized in that: The rectangular tube cross-section chord (2) is a welded component.

6. The chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 2, characterized in that: The fastener (34) is a friction-type high-strength bolt.

7. The chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 2, characterized in that: The flange plate 1 (32) and the flange plate 2 (33) are respectively fixedly connected to the connecting member (31) and the rectangular tube section chord (2) by a reinforcing rib (35).

8. The chord bar with a combined cross-section of a circular tube and a rectangular tube for a building tube truss structure according to claim 1, characterized in that: The circular tube section chord bar (1) and the rectangular tube section chord bar (2) are both coated with anti-corrosion and fireproof materials.

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