Prefabricated non-floor-supporting truss

Abstract

This application specifically discloses the technical field of floor slab support, particularly relating to a prefabricated, non-floor-supporting floor slab truss. It includes multiple supporting trusses located beneath the floor slab, with tie rods positioned perpendicularly to adjacent trusses. The supporting trusses are fixedly mounted on the main structural steel beams via connecting components, and the supporting trusses act on the bottom of the floor slab. This application's supporting truss uses the main structural steel beams as fulcrums, acting on the bottom of the floor slab. The tie rods, perpendicular to the length of the supporting trusses, improve the stability of the floor slab supporting trusses during construction. Furthermore, it eliminates the need for a lower floor slab as a foundation, improving construction efficiency, reducing construction space requirements, and solving the problem of high material consumption. Additionally, by incorporating length adjustment components, it allows for single-piece fabrication and multiple reuses based on the span requirements of different floor slabs at the construction site, resulting in significant economic value.

Description

Technical Field

[0001] This application relates to the technical field of floor support, and in particular to assembled non-ground-supported floor slab trusses. Background Technology

[0002] With the active promotion of national policies, prefabricated steel structure buildings have developed rapidly. When the span of the building floor exceeds a certain distance, it is necessary to erect temporary supports or increase the rigidity of the floor itself to resist construction loads and deformation.

[0003] In related technologies, temporary supports are all ground-based supports, which can only be erected after the concrete of the floor slab below the floor being constructed has reached a certain strength. This slows down the construction speed of the building's floor slabs, thereby increasing the construction cycle of the entire prefabricated steel structure building; at the same time, ground-based supports occupy a large amount of space, making the construction site space relatively crowded.

[0004] To increase the stiffness of a floor slab, it is necessary to increase the amount of steel reinforcement in the floor slab by increasing the diameter of the steel bars and reducing the spacing between the bars. However, increasing the amount of steel reinforcement has a relatively limited effect on improving the stiffness of the floor slab, and the effect is not significant.

[0005] Therefore, there is an urgent need for a floor support system that is efficient in construction, occupies little construction space, and saves on construction materials. This would solve the problem of long construction cycles caused by the need for temporary supports to be based on the lower floor slab, as well as the problems of excessive material consumption and insignificant stiffness improvement when increasing the stiffness of the floor slab itself. Summary of the Invention

[0006] This application provides a prefabricated non-ground floor slab support truss, which aims to improve the problems of slow construction progress in the construction process of related technologies, which increases the construction cycle of the entire prefabricated steel structure, while also occupying a large construction space, resulting in a relatively crowded construction site and a large amount of construction materials.

[0007] This application provides a prefabricated non-floor-supporting truss, employing the following technical solution:

[0008] The assembled non-floor-supporting truss includes multiple supporting trusses located below the floor slab, with tie rods between adjacent supporting trusses. The tie rods are perpendicular to the supporting trusses. The supporting trusses are fixedly installed on the main structural steel beams via connecting components. The main structural steel beams abut against the bottom of the floor slab. Multiple supporting plates acting on the floor slab are provided on the supporting trusses.

[0009] By adopting the above technical solution, during construction, the main structural steel beams are integrally set on the main structural columns. The columns provide support for the main structural steel beams, which in turn provide support for the supporting trusses. The supporting trusses act on the bottom of the floor slab. At the same time, tie rods are set in the direction perpendicular to the length of the supporting trusses, which improves the stability of the floor slab supporting trusses during construction. Furthermore, it eliminates the need for a lower floor slab as a foundation, thereby improving construction efficiency and reducing the space occupied during construction. In addition, it solves the problem of excessive construction material consumption.

[0010] Preferably, the supporting truss includes multiple supporting frames and a length adjustment assembly. A support plate is provided on the top of the supporting frame, and the support plate acts on the bottom of the floor slab. The connecting assembly connects the supporting frame and the main structural steel beam. The length adjustment assembly is installed between adjacent supporting frames of the same supporting truss.

[0011] By adopting the above technical solution, the distance between adjacent support frames on the same support truss can be adjusted using the length adjustment component, making the support truss suitable for floor slab construction of different spans and improving the application range of the assembled floor slab support truss.

[0012] Preferably, the support frame includes a truss upper chord, a truss lower chord, and vertical web members. The two ends of the vertical web members are respectively connected to the truss upper chord and the truss lower chord, and the truss upper chord, the truss lower chord, and the vertical web members form a square truss structure.

[0013] By adopting the above technical solution, the support frame is a truss structure, which gives the support frame strong stability.

[0014] Preferably, the length adjustment assembly includes a first adjustment tube slidably installed between two adjacent upper chords of trusses and a second adjustment tube slidably installed between two adjacent lower chords of trusses. Both the first adjustment tube and the second adjustment tube have multiple connection holes along the length direction. A first fastener is connected between the first adjustment tube and two adjacent upper chords of trusses and between the second adjustment tube and two adjacent lower chords of trusses. The first fastener passes through the connection holes.

[0015] By adopting the above technical solution, and according to the span requirements of different floor slabs at the construction site, the upper chord of the truss and the first adjusting pipe, and the lower chord of the truss and the second adjusting pipe can be flexibly assembled on site to adapt to different span requirements. That is, the first fastener is inserted through the connecting holes at different positions to realize the adjustment of the length of the upper chord and the lower chord of the truss. It can be made once and reused multiple times, which has good economic value.

[0016] Preferably, a diagonal web member is provided between the upper chord and the lower chord of the truss.

[0017] By adopting the above technical solutions, the stability and support strength of the supporting truss are further enhanced, ensuring the construction quality of the floor slab.

[0018] Preferably, the main structural steel beam includes an upper flange plate, a lower flange plate, and a web plate. The upper flange plate acts on the bottom of the floor slab, the supporting truss is fixedly connected to the lower flange plate through a connecting assembly, and the web plate is fixedly connected between the upper flange plate and the lower flange plate.

[0019] By adopting the above technical solution, the supporting truss is fixedly connected to the lower flange plate through connecting components, that is, the supporting truss is supported by the main structural steel beams. This avoids the need to erect temporary ground supports. On the one hand, it does not occupy a large construction space and does not require the lower floor slab as a construction foundation, resulting in high construction efficiency. On the other hand, it does not require increasing the amount of steel reinforcement to improve the floor slab rigidity, saving construction materials.

[0020] Preferably, a connecting lug is fixedly provided at the end of the tie rod, a supporting lug is fixedly provided on the side wall of the supporting truss, and a second fastener is installed between the connecting lug and the supporting lug.

[0021] By adopting the above technical solution, the connecting ear plate and the supporting ear plate can be detachably connected using the second fastener. This makes installation and disassembly convenient. At the same time, it can be manufactured once and reused multiple times, which has good economic value.

[0022] Preferably, the connecting assembly includes a first connector and a second connector. The first connector is fixedly connected to the bottom of the main structural steel beam, and the supporting truss overlaps the second connector. The first connector and the second connector are detachably connected.

[0023] By adopting the above technical solution, the supporting truss is attached to the second connector, which facilitates installation and construction, and also facilitates disassembly after construction, thus improving the convenience of construction.

[0024] Preferably, the second connector includes an overlapping sleeve and a connecting plate. The overlapping sleeve is connected to the supporting truss, and a third fastener is connected between the connecting plate and the first connector. The overlapping sleeve passes through the connecting plate, and both ends of the overlapping sleeve extend from the side wall of the connecting plate.

[0025] By adopting the above technical solution, the two ends of the lap sleeve extend from the side wall of the connecting plate, which increases the working area between the connecting plate and the supporting truss and improves the stability of the connection with the supporting truss.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By fixing the supporting truss to the main structural steel beam through connecting components, the main structural steel beam supports the supporting truss, thus avoiding the need to erect temporary ground supports. On the one hand, it does not occupy a large construction space and does not require the lower floor slab as a construction foundation, resulting in high construction efficiency; on the other hand, it does not require increasing the amount of steel reinforcement to improve the floor slab rigidity, saving construction materials.

[0028] 2. By setting up length adjustment components, the span requirements of different floor slabs on the construction site can be met by flexibly assembling the truss upper chord and the first adjustment pipe, and the truss lower chord and the second adjustment pipe on site. That is, the first fastener is inserted through the connection holes at different positions to adjust the length of the truss upper chord and the truss lower chord. It can be made once and reused multiple times, which has good economic value.

[0029] 3. By attaching the supporting truss to the second connector, installation and disassembly after construction are facilitated, thus improving the convenience of construction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a top view of an embodiment of the present application;

[0032] Figure 3 yes Figure 1 A magnified view of part A in the middle;

[0033] Figure 4 yes Figure 1 A structural diagram illustrating the specific working relationship between the main structural steel beams and connecting components;

[0034] Figure 5 It is a sectional view showing the specific fit between the tie rod, the truss top chord, and the connecting lugs.

[0035] In the diagram, 1. Support truss; 2. Tie rod; 3. Connecting assembly; 31. First connector; 32. Second connector; 321. Overlap sleeve; 322. Connecting plate; 4. Main structural steel beam; 41. Upper flange plate; 42. Lower flange plate; 43. Web plate; 5. Support plate; 6. Support frame; 7. Length adjustment assembly; 71. First adjusting pipe; 72. Second adjusting pipe; 8. Truss upper chord; 9. Truss lower chord; 10. Vertical web member; 11. First fastener; 12. Diagonal web member; 13. Connecting lug plate; 14. Support lug plate; 15. Second fastener; 16. Third fastener. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0037] Example:

[0038] This application discloses an assembled non-floor-supporting truss, as shown in the embodiments below. Figure 1 and Figure 2 The system includes multiple supporting trusses 1 located below the floor slab. In this embodiment, to achieve the effect of one-time fabrication and multiple reuses of the floor slab supporting trusses, a connecting component 3 is detachably connected between the supporting trusses 1 and the main structural steel beams 4. The main structural steel beams 4 abut against the bottom of the floor slab, and the supporting trusses 1 act on the bottom of the floor slab. During construction, the supporting trusses 1 act on the bottom of the floor slab, which improves the supporting stiffness of the supporting trusses 1 on the floor slab.

[0039] In this embodiment, refer to Figure 1 The columns are steel columns in the main steel structure. During construction, the building columns are constructed before the floor slab below. Therefore, when the main structural steel beam 4 is installed on the main structural columns, it is not connected to the floor slab below. Thus, the main structural steel beam 4 used to support the floor slab above does not depend on the structure of the floor slab below. During construction, it is not necessary to wait for the floor slab below to be cured before constructing the floor slab above, which improves construction efficiency. At the same time, there is no need to build temporary supports, which avoids temporary supports occupying the space between the floor slab below and the floor slab above, thus occupying less space.

[0040] Specifically, refer to Figure 1 The supporting truss 1 includes multiple supporting frames 6 and a length adjustment assembly 7. The length adjustment assembly 7 is installed between adjacent supporting frames 6 of the same supporting truss 1 to adjust the distance between two adjacent supporting frames 6, thereby adjusting the span of the entire supporting truss 1. Preferably, a single supporting truss 1 includes three supporting frames 6. A support plate 5 is provided on the top of the supporting frame 6. The support plate 5 acts on the bottom of the floor slab. During construction, multiple support plates 5 are evenly placed on the top of the supporting truss 1, so that the force applied by the upper floor slab is more dispersed when transmitted to the supporting truss 1 through the evenly distributed support plates 5, thereby increasing the overall stability of the supporting truss 1 and ensuring construction quality. Preferably, the support plate 5 is made of wooden purlins.

[0041] Furthermore, referring to Figure 1 The support frame 6 includes a truss upper chord 8, a truss lower chord 9, and vertical web members 10. There are two vertical web members 10. In this embodiment, the truss upper chord 8, the truss lower chord 9, and the vertical web members 10 are all made of square steel pipes. The support plate 5 is placed on the top of the truss upper chord 8. The two ends of the vertical web members 10 are welded to the truss upper chord 8 and the truss lower chord 9, respectively. The truss upper chord 8, the truss lower chord 9, and the vertical web members 10 form a square truss structure, which makes the floor slab have sufficient support rigidity during the construction stage.

[0042] Meanwhile, during construction, inclined web members 12 can be welded between the upper chord 8 and the lower chord 9 of the truss to further enhance the support stiffness of the supporting truss 1 and ensure construction quality. Preferably, there are two inclined web members 12, which are symmetrically arranged about the center plane of the upper chord 8 in the vertical direction and form a triangular structure with the upper chord 8 and the lower chord 9.

[0043] Furthermore, referring to Figure 1 The length adjustment assembly 7 includes a first adjustment tube 71 slidably installed between two adjacent upper chords 8 of trusses and a second adjustment tube 72 slidably installed between two adjacent lower chords 9 of trusses. Both the first and second adjustment tubes 71 and 72 have multiple connection holes along their length. First fasteners 11 are connected between the first adjustment tube 71 and the two adjacent upper chords 8, and between the second adjustment tube 72 and the two adjacent lower chords 9 of trusses. The first fasteners 11 pass through the connection holes. Preferably, the first fasteners 11 are bolts.

[0044] Specifically, both the first adjusting pipe 71 and the second adjusting pipe 72 are made of square steel pipes, and both ends of the first adjusting pipe 71 can be inserted into the upper chord 8 of the truss. Multiple through holes that match the connecting holes on the first adjusting pipe 71 are evenly opened along the length of the two adjacent upper chords 8. Then, the connecting holes of the first adjusting pipe 71 are aligned with the through holes of the two adjacent upper chords 8, and the first fastener 11 passes through the corresponding through holes to fix the two adjacent upper chords 8 to the first adjusting pipe 71. At the same time, the connecting holes on the first adjusting pipe 71 match the through holes at different positions on the upper chord 8 to adjust the distance between the two adjacent support frames 6 of the same support truss 1.

[0045] Similarly, the structure and connection relationship between the second adjusting pipe 72 and the lower chord 9 of the truss are exactly the same as those of the first adjusting pipe 71 and the upper chord 8 of the truss, so they will not be described in detail here. Those skilled in the art can specifically implement the connection between the second adjusting pipe 72 and the lower chord 9 of the truss according to the structure and connection relationship between the first adjusting pipe 71 and the upper chord 8 of the truss.

[0046] Reference Figure 1 The main structural steel beam 4 includes an upper flange plate 41, a lower flange plate 42, and a web plate 43. The upper flange plate 41 acts on the bottom of the floor slab. The supporting truss 1 is fixedly connected to the lower flange plate 42 through the connecting component 3. The web plate 43 is welded to the opposite side walls of the upper flange plate 41 and the lower flange plate 42. The cross-sectional shape of the main structural steel beam 4 is generally "I" shaped. The upper flange plate 41 of the main structural steel beam 4 acts on the bottom of the floor slab, increasing the support area at the bottom of the floor slab and improving the overall support strength.

[0047] Reference Figure 3The connecting component 3 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 is fixedly connected to the bottom of the main structure steel beam 4, and the supporting truss 1 is attached to the second connecting member 32. The first connecting member 31 and the second connecting member 32 are detachably connected.

[0048] Specifically, the first connecting member 31 consists of two connecting bodies symmetrically distributed on both sides of the web plate 43, and a cavity is formed between the two connecting bodies. The lower flange plate 42 of the main structural steel beam 4 is located in the cavity between the two connecting bodies. Under the gravity of the supporting truss 1, the top of the lower flange plate 42 abuts against the cavity wall, thereby realizing the fixed connection between the main structural steel beam 4 and the first connecting member 31.

[0049] Reference Figure 3 and Figure 4 The second connecting member 32 includes an overlapping sleeve 321 and a connecting plate 322. The overlapping sleeve 321 is made of square steel pipe, passes through the lower half of the connecting plate 322 and is welded thereon, and both ends of the overlapping sleeve 321 extend from the side wall of the connecting plate 322. The lower chord 9 of the truss passes through the overlapping sleeve 321. By setting the overlapping sleeve 321, the working area between the connecting plate 322 and the lower chord 9 of the truss is increased, thereby improving the connection strength between the connecting component 3 and the supporting truss 1. The upper half of the connecting plate 322 extends into the first connecting member 31, and the two connecting bodies of the first connecting member 31 are clamped and fixed to both sides of the connecting plate 322.

[0050] Specifically, refer to Figure 3 and Figure 4 A third fastener 16 is connected between the connecting plate 322 and the first connecting member 31. In this embodiment, the third fastener 16 is a bolt assembly. In specific use, the third fastener 16 passes through the first connecting member 31 and the connecting plate 322 to achieve a fixed connection between the first connecting member 31 and the second connecting member 32.

[0051] Reference Figure 2 Multiple parallel tie rods 2 are installed between adjacent supporting trusses 1, and the tie rods 2 are perpendicular to the supporting trusses 1. (Refer to...) Figure 1 and Figure 5 The two ends of the tie rod 2 are respectively connected to the corresponding support frame 6 in the adjacent support truss 1. The end of the tie rod 2 is welded with a connecting lug plate 13, and the side wall of the support truss 1 is welded with a support lug plate 14. A second fastener 15 is installed between the connecting lug plate 13 and the support lug plate 14. Preferably, the second fastener 15 is a bolt.

[0052] Reference Figure 1 and Figure 5Preferably, the support ear plate 14 is welded to the side wall of the upper chord 8 of the truss, and a support ear plate 14 is welded to both sides of a single upper chord 8 of the truss, so that the tie rod 2 connected to the two support ear plates 14 and the upper chord 8 of the adjacent support truss 1 form a square truss structure. This truss structure has strong stability and improves the support strength.

[0053] During construction, through holes are made on both the connecting ear plate 13 and the supporting ear plate 14. The through holes on the connecting ear plate 13 and the supporting ear plate 14 are aligned, and then the second fastener 15 passes through the corresponding through holes to achieve a fixed connection between the tie rod 2 and the supporting truss 1. The connecting ear plate 13 and the supporting ear plate 14 are detachably connected using the second fastener 15, allowing the floor slab supporting truss to be manufactured once and reused multiple times, thus offering good economic value.

[0054] The implementation principle of this application embodiment is as follows:

[0055] During construction, the main structural steel beam 4 is first installed onto the main structural column, and then the pre-assembled connecting component 3 is connected to the main structural steel beam 4. Then, the support truss 1 is hoisted to the construction floor by a tower crane, and the support truss 1 is connected to the connecting component 3. When installing the support truss 1, the support plate 5 should be laid on the upper chord 8 of the truss at the same time. Then, the precast composite floor slab or the formwork-free steel truss floor deck or formwork is installed on the top of the assembled support truss 1, and the pouring of the upper floor slab begins.

[0056] Throughout the construction process, the specifications, spacing, and quantities of the tie rods 2 and support trusses 1, as well as the support frame 6, the first adjusting pipe 71, and the second adjusting pipe 72, can be flexibly adjusted on-site according to the different floor slab span requirements at the construction site, thereby adapting to different floor slab span requirements. At the same time, the support trusses 1 do not need to be placed on the ground, saving construction space and truly enabling the simultaneous pouring of multiple floor slabs, accelerating the construction speed of building floor slabs, and reducing the construction cycle of the entire structure.

[0057] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular, non-floor-supporting truss, characterized in that, It includes multiple supporting trusses (1) located below the floor slab, and tie rods (2) are provided between adjacent supporting trusses (1). The tie rods (2) are perpendicular to the supporting trusses (1). The supporting trusses (1) are fixedly installed on the main structural steel beams (4) through connecting components (3). The main structural steel beams (4) abut against the bottom of the floor slab. Multiple supporting plates (5) acting on the floor slab are provided on the supporting trusses (1). The connecting component (3) includes a first connector (31) and a second connector (32). The first connector (31) is fixedly connected to the bottom of the main structural steel beam (4), and the supporting truss (1) overlaps the second connector (32). The first connector (31) consists of two connectors symmetrically distributed on both sides of the web, forming a cavity between the two connectors. The lower flange of the main steel structure is located inside the cavity and abuts against the cavity wall. The second connector (32) includes an overlapping sleeve (321) and a connecting plate (322). The overlapping sleeve (321) passes through and is fixed to the connecting plate (322). The supporting truss (1) passes through the overlapping sleeve (321) and overlaps and is fixed thereto. The two connecting bodies of the first connector (31) are clamped and fixed to both sides of the connecting plate (322). The supporting truss (1) includes multiple supporting frames (6) and a length adjustment component (7). The top of the supporting frame (6) is provided with a support plate (5), which acts on the bottom of the floor slab. The connecting component (3) is connected between the supporting frame (6) and the main structural steel beam (4). The length adjustment component (7) is installed between adjacent supporting frames (6) of the same supporting truss (1).

2. The assembled non-floor-supporting truss according to claim 1, characterized in that, The support frame (6) includes a truss upper chord (8), a truss lower chord (9) and a vertical web member (10). The two ends of the vertical web member (10) are connected to the truss upper chord (8) and the truss lower chord (9) respectively, and the truss upper chord (8), the truss lower chord (9) and the vertical web member (10) form a square truss structure.

3. The assembled non-floor-supporting truss according to claim 2, characterized in that, The length adjustment assembly (7) includes a first adjustment tube (71) slidably installed between two adjacent upper chords (8) of a truss and a second adjustment tube (72) slidably installed between two adjacent lower chords (9) of a truss. Both the first adjustment tube (71) and the second adjustment tube (72) have multiple connection holes along the length direction. The first adjustment tube (71) is connected to the two adjacent upper chords (8) of the truss and the second adjustment tube (72) is connected to the two adjacent lower chords (9) of the truss. The first fastener (11) passes through the connection hole.

4. The assembled non-floor-supporting truss according to claim 3, characterized in that, An oblique web member (12) is provided between the upper chord (8) and the lower chord (9) of the truss.

5. The assembled non-ground-floor slab support truss according to claim 1, characterized in that, A connecting ear plate (13) is fixedly provided at the end of the tie rod (2), and a supporting ear plate (14) is fixedly provided on the side wall of the supporting truss (1). A second fastener (15) is installed between the connecting ear plate (13) and the supporting ear plate (14).

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