A multi-layer longitudinal and transverse composite box beam venter truss steel structure roof system

Abstract

This invention discloses a multi-layered, longitudinally and transversely stacked box-type hollow truss steel roof truss system, comprising: multiple hollow trusses arranged in a cross configuration, each hollow truss including parallel chords and connecting members between the chords; the multiple hollow trusses are sequentially stacked at their intersection nodes, and adjacent hollow trusses are fixedly connected; and an inner partition plate is set at the intersection nodes of the hollow trusses, vertically arranged within the hollow trusses and fixedly connected to the chords, forming a multi-layered, longitudinally and transversely stacked hollow node box structure together with the chords and connecting members. This invention, through the cross-stacked hollow trusses and the inner partition plates at their intersection nodes, forms a concealed steel column hollow truss structure with high rigidity and load-bearing capacity. The roof truss system has a simple structure, fewer nodes and structural members, greatly reducing the processing and production costs of the roof truss, improving the construction efficiency of the roof truss, and meeting the shape and stress requirements of different buildings.

Description

Technical Field

[0001] This invention relates to the field of housing construction technology, specifically to a multi-layer longitudinal and transverse composite box-beam hollow truss steel structure roof truss system. Background Technology

[0002] A roof truss is a component of a building, a truss used in the roof structure to bear the weight of the roof and framework, as well as wind loads acting on the top chord. They are typically made of materials such as wood, steel, or reinforced concrete, and come in various shapes including triangular, trapezoidal, and arched. Traditional roof trusses are generally triangular, composed of a top chord, a bottom chord, vertical web members, and diagonal web members. Depending on the materials used, there are wooden roof trusses, steel roof trusses, and reinforced concrete roof trusses. With the development of modern building technology, large-span structures have become the fastest-growing structural type worldwide.

[0003] Common structural systems for large-span steel roof trusses include: truss structures, suspension structures, arch structures, space frame structures, thin-walled space structures, and reticulated shell structures. For example, Chinese invention patent CN108978871A provides a large-span roof structure, which includes two trusses arranged in a cross shape and columns connected to the ends of each truss. The truss includes a T-beam distributed along a straight line and two L-beams arranged side by side above the T-beam. Multiple upper chords are vertically arranged between the two L-beams, and straight web members are respectively arranged between the two ends of each upper chord and the T-beam. The upper chords and the corresponding two straight web members form an isosceles triangle structure. The columns include three column bases distributed along a straight line. The top of each column base forms a top surface with an equilateral triangle structure, and the bottom of each column base forms a bottom surface with an equilateral triangle structure. The area of ​​the bottom surface is larger than the area of ​​the top surface. To showcase architectural cultural characteristics, many large-span roof structures do not have suspended ceilings, in order to reflect the unity of architectural form and structural stress. However, the shapes of the aforementioned large-span roof structure systems are basically fixed, making it difficult to meet the requirements of different buildings for form and structural stress. In addition, the roof truss structure has a large number of members and nodes, making the manufacturing and installation complex and the processing and production costs high. Without suspended ceilings, the ceiling appears cluttered, affecting the aesthetics of the building.

[0004] In view of this, there is an urgent need to improve the existing large-span steel structure roof truss system in order to enhance its aesthetics, reduce its processing and production costs, and meet the requirements of different architectural shapes and structural stresses. Summary of the Invention

[0005] The technical problem to be solved by this invention is that existing large-span steel structure roof truss systems have fixed shapes, many nodes, high production and processing costs, and cannot meet the requirements of different buildings for shape and structural stress.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A multi-layered, longitudinally and transversely stacked box girder hollow truss steel structure roof truss system includes:

[0008] Multiple hollow trusses are arranged in a cross configuration. Each hollow truss includes two parallel chords and a connecting rod between the chords. The multiple hollow trusses are stacked sequentially at their intersection nodes, and adjacent hollow trusses are fixedly connected.

[0009] An inner partition is installed at the intersection of the hollow truss beams. The inner partition is vertically installed inside the hollow truss beams and is fixedly connected to the chord members. The inner partition, the chord members, and the connecting rods form a multi-layered, longitudinally and transversely stacked hollow node box.

[0010] In the above scheme, preferably, the hollow truss includes multiple transverse hollow trusses and multiple longitudinal hollow trusses, the multiple transverse hollow trusses are arranged in parallel, the multiple longitudinal hollow trusses are arranged in parallel, and the transverse hollow trusses and the longitudinal hollow trusses are arranged alternately and sequentially.

[0011] In the above scheme, preferably, each vertical sidewall of the plurality of hollow node boxes is respectively arranged in the same vertical plane.

[0012] In the above scheme, preferably, there is an included angle between the transverse open truss and the longitudinal open truss, and the roof truss system further includes:

[0013] A gap filler plate is disposed between two adjacent open truss beams. The gap filler plate includes parallel slope plates and support plates for connecting the slope plates. The angle of the slope plates is equal to the included angle between the transverse open truss beams and the longitudinal open truss beams. The chord is fixed to the top and bottom surfaces of the gap filler plate.

[0014] In the above scheme, preferably, the slope plate and the support plate are respectively arranged in the same vertical plane as the vertical sidewalls of the hollow node box.

[0015] In the above scheme, preferably, the thickness of the inner partition, the slope plate, and the support plate is the same as the thickness of the chord and the connecting rod.

[0016] In the above scheme, preferably, there is an included angle between the transverse open truss and the longitudinal open truss, and two adjacent open trusses are welded and fixed by bevel welds.

[0017] In the above scheme, preferably, the chord and the connecting rod are connected by a fillet weld.

[0018] In the above scheme, preferably, the roof truss system also includes a vertically arranged support rod, one end of which is fixed to the structural foundation and the other end is connected and fixed to the hollow node box.

[0019] Compared with existing technologies, the multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof system provided by this invention includes a truss structure composed of multiple hollow trusses arranged in a cross-over configuration. Vertically installed inner partitions at the intersections form invisible steel columns with the trusses, creating a hollow truss structure. The trusses are bending and compression members, possessing greater stiffness and load-bearing capacity, thus meeting the needs of large-span roofs. The roof system resembles the multi-layer mortise and tenon structure of Chinese wooden architecture, possessing the charm of Chinese culture and exhibiting excellent architectural effect and aesthetic appeal. The roof system has fewer components, simpler truss structure nodes, and is easier to operate, effectively improving the construction speed of the roof and saving on production and construction costs. Attached Figure Description

[0020] Figure 1 This is a perspective view of the multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system in this invention;

[0021] Figure 2 This is a schematic diagram of the hollow node box structure in this invention;

[0022] Figure 3 This is a side view of a multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system in one embodiment of the present invention;

[0023] Figure 4 This is a side view of the hollow node box in another embodiment of the present invention;

[0024] Figure 5 This is a perspective view of the hollow node box in another embodiment of the present invention.

[0025] in, Figures 1 to 5 The correspondence between the names of the components and the reference numerals in the attached drawings is as follows:

[0026] 1. Hollow truss beam; 2. Internal diaphragm; 3. Hollow node box; 4. Gap filler plate; 5. Support rod.

[0027] Transverse open-web truss 11, longitudinal open-web truss 12

[0028] String 101, Connecting rod 102

[0029] Slope plate 41, support plate 42. Detailed Implementation

[0030] This invention provides a multi-layered, longitudinally and transversely stacked box girder hollow truss steel roof truss system. Through multiple hollow trusses arranged in a cross-over configuration and internal partitions at the intersections of the hollow trusses, an invisible steel column structure is formed, improving the stiffness and load-bearing capacity of the steel roof truss system, reducing its production and construction costs, and meeting the design and load-bearing requirements of different buildings. The invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 and Figure 2 As shown, the multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system provided by the present invention includes multiple intersecting hollow truss beams 1 and inner partitions 2 disposed at the intersection nodes of the hollow truss beams 1.

[0032] The hollow truss 1 includes multiple transverse hollow trusses 11 and multiple longitudinal hollow trusses 12. The transverse hollow trusses 11 are arranged in parallel, and the longitudinal hollow trusses 12 are arranged in parallel. Each hollow truss 1 includes a chord member 101 and a connecting member 102. Two chord members 101 are arranged in parallel, and the connecting member 102 is located between the two chord members 101 to connect them. The chord members 101 and the connecting member 102 are connected by fillet welds. The transverse hollow trusses 11 and the longitudinal hollow trusses 12 are alternately stacked in sequence, and the chord members 101 at the intersection nodes of the transverse hollow trusses 11 and the longitudinal hollow trusses 12 are fixedly connected.

[0033] The inner partition 2 is installed inside the hollow truss 1 and fixed to the chord 101 and connecting rod 102. The inner partition 2 is vertically installed at the intersection of the hollow truss 1, forming a multi-layered, longitudinally and transversely stacked hollow node box 3 with the chord 101 and connecting rod 102. Each vertical sidewall of the multi-layered hollow node box 3 is set in the same vertical plane, forming an invisible steel column structure at the intersection of the hollow truss 1, which has great rigidity and load-bearing capacity.

[0034] The chords of the transverse open truss 11 and the longitudinal open truss 12 can be arranged in parallel or at an angle.

[0035] like Figure 3 As shown, in one embodiment of the present invention, the included angle between the transverse open truss 11 and the longitudinal open truss 12 is small, and two adjacent transverse open truss 11 and longitudinal open truss 12 beams are welded and fixed by bevel welds.

[0036] like Figure 4 and Figure 5As shown, in another embodiment of the present invention, when the included angle between the transverse open truss 11 and the longitudinal open truss 12 is large, the transverse open truss 11 and the longitudinal open truss 12 can be connected and fixed by a gap filler plate 4. The gap filler plate 4 includes a slope plate 41 and a support plate 42. The two slope plates 41 are arranged in parallel, and the angle of the slope plate 41 is equal to the included angle between the transverse open truss 11 and the longitudinal open truss 12. The support plate 42 is used to connect the two slope plates 41. The chords 101 of the transverse open truss 11 and the longitudinal open truss 12 are fixed to the top and bottom surfaces of the gap filler plate 4. The vertical sidewalls of the open node box 3 of the slope plate 41 and the support plate 42 are respectively arranged in the same vertical plane.

[0037] The roof truss system also includes vertically installed support rods 5, one end of which is fixed to the structural foundation and the other end is connected and fixed to the hollow node box 3, further improving the load-bearing capacity of the roof truss system.

[0038] The working process of this invention is as follows:

[0039] The upper and lower chords 101 of the transverse open truss 11 and the longitudinal open truss 12 are connected by inner partitions 2 and connecting rods 102. The inner partitions 2, connecting rods 102, and upper and lower chords 101 form multiple open node box bodies 3, making the roof truss a hollow truss with hidden steel columns. Support rods 5 are set on the open node box bodies 3, forming a composite column composed of four box-shaped steel columns. This spatial structure beam is a compression-bending member with large stiffness and load-bearing capacity, which can meet the needs of large-span roofs, with a maximum roof span of nearly 20m.

[0040] Compared with existing technologies, the multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system provided by the present invention has the following advantages:

[0041] 1. The roof system has an ingenious structural design, resembling the multi-layered mortise and tenon structure of Chinese wooden architecture. It has the charm of Chinese culture, good aesthetics and load-bearing stability, and good architectural effect.

[0042] 2. The thickness of the inner partition, slope plate and support plate in the roof system is the same as the thickness of the chord and connecting rod, so that the cross sections of the open truss beam and the hidden steel column of the roof system are consistent, the components are highly standardized and easy to process, and at the same time, it is convenient to perform stress simulation calculations on the roof system, thereby improving the design efficiency and design accuracy of the roof.

[0043] 3. The hollow trusses of the roof system form a multi-layered hollow node box structure at the intersection nodes. The hollow node box structure improves the overall structural stiffness of the hollow truss steel roof system. The number of node components is small, which saves steel consumption in the roof system and reduces the cost of manufacturing and construction of the roof system.

[0044] 4. The roof structure has simple and uniform nodes, which are easy to manufacture in the factory. The hollow trusses, internal partitions and gap fillers can be prefabricated in the factory and then spliced ​​on the construction site, which makes the construction speed fast.

[0045] This invention is not limited to the above-described preferred embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

Claims

1. A multi-layered, longitudinally and transversely stacked box girder hollow truss steel structure roof truss system, characterized in that, include: Multiple hollow trusses are arranged in a cross configuration. Each hollow truss includes two parallel chords and a connecting rod between the chords. The multiple hollow trusses are stacked sequentially at their intersection nodes, and adjacent hollow trusses are fixedly connected. An inner partition is provided at the intersection of the hollow truss beams. The inner partition is vertically installed inside the hollow truss beams and is fixedly connected to the chord members. The inner partition, the chord members, and the connecting rods form a multi-layered hollow node box with longitudinal and transverse overlap. The roof truss system also includes vertically arranged support rods, one end of which is fixed to the structural foundation and the other end is connected and fixed to the hollow node box. The hollow truss includes multiple transverse hollow trusses and multiple longitudinal hollow trusses. The multiple transverse hollow trusses are arranged in parallel, and the multiple longitudinal hollow trusses are arranged in parallel. The transverse hollow trusses and the longitudinal hollow trusses are alternately stacked in sequence. There is an included angle between the transverse open-web truss and the longitudinal open-web truss, and the roof truss system also includes: A gap filler plate is disposed between two adjacent open truss beams. The gap filler plate includes parallel slope plates and support plates for connecting the slope plates. The angle of the slope plates is equal to the included angle between the transverse open truss beams and the longitudinal open truss beams. The chord is fixed to the top and bottom surfaces of the gap filler plate.

2. The multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system according to claim 1, characterized in that, Each of the vertical sidewalls of the multiple hollow node boxes is respectively set in the same vertical plane.

3. The multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system according to claim 1, characterized in that, The slope plate and the support plate are respectively arranged in the same vertical plane as the vertical sidewalls of the hollow node box.

4. The multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system according to claim 3, characterized in that, The thickness of the inner partition, the slope plate, and the support plate is the same as the thickness of the chord and the connecting rod.

5. The multi-layer longitudinal and transverse composite box girder hollow truss steel structure roof truss system according to claim 1, characterized in that, The chord and the connecting rod are connected by a fillet weld.

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