Prefabricated steel bar truss floor support plate

Abstract

An assembled steel bar truss floor support plate, including floor support plate unit and steel bar truss, floor support plate unit has at least two, along the transverse splicing connection, floor support plate unit includes plate main body, upper splicing plate and lower splicing plate, plate main body left side or right side is equipped with first recess, plate main body right side or left side is equipped with second recess, first recess is equipped with first adjusting assembly in, second recess is equipped with second adjusting assembly in, upper splicing plate is equipped in the top of first recess, with first adjusting assembly transverse adjustable connection, lower splicing plate is equipped in second recess, with second adjusting assembly transverse adjustable connection, the upper splicing plate of one floor support plate unit is overlapped on the lower splicing plate of another floor support plate unit, steel bar truss is across on the connecting part of two floor support plate unit top, the technical problem of the utility model solves the traditional assembled steel bar truss floor support plate and cannot be adjusted according to demand, needs to customize specific length's bearing formwork under different construction environment, the flexibility of device is lower.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building structures, and in particular, a prefabricated steel truss floor deck. Background Technology

[0002] Steel truss floor decking is an improvement on profiled floor decking. The steel truss is prefabricated in the back-end processing plant and can be prefabricated to the required length. On-site construction requires first placing the truss floor decking in the correct position, welding the steel bars, then welding the studs, and finally placing and binding the on-site steel bars. After customer acceptance, concrete is poured.

[0003] The existing utility model with authorization announcement number CN212689351U discloses a prefabricated steel truss floor deck, including a steel truss and a load-bearing template. The steel truss includes a bottom chord steel bar. The load-bearing template is provided with a number of fixing components for fixing the bottom chord steel bar and connecting components for connecting the fixing components and the load-bearing template.

[0004] The above technical solution can reduce production costs. However, when using the above technical solution, the structure of the supporting template of the device is relatively fixed, which makes it impossible for workers to adjust the length of the supporting template according to the needs. Therefore, in different construction environments, it is necessary to customize the supporting template of a specific length, which makes the device less flexible.

[0005] Therefore, those skilled in the art provide a prefabricated steel truss floor deck to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this utility model is to provide a prefabricated steel truss floor deck, which solves the technical problem that the structure of the load-bearing formwork of traditional prefabricated steel truss floor decks is relatively fixed, making it impossible for workers to adjust it according to needs. Consequently, in different construction environments, it is necessary to customize load-bearing formwork of specific lengths, resulting in low flexibility of the device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution.

[0008] A prefabricated steel truss floor deck includes floor deck units and a steel truss; each floor deck unit comprises at least two pieces, spliced ​​together laterally; each floor deck unit includes a main body, an upper splicing plate, and a lower splicing plate; connecting holes are spaced longitudinally at the center of the main body; a first groove is provided on the left or right side of the main body; the first groove has a rectangular planar shape; a second groove is provided on the right or left side of the main body; the second groove has a horizontal U-shaped planar shape; a first adjusting component is provided in the first groove, and a second adjusting component is provided in the second groove; the upper splicing plate is located at the top of the first groove. The upper splicing plate is laterally adjustable and connected to the first adjusting component; a first horizontal strip hole is provided at intervals along the longitudinal direction on the surface of the upper splicing plate; the lower splicing plate is disposed in the second groove and is laterally adjustable and connected to the second adjusting component; a second horizontal strip hole is provided at intervals along the longitudinal direction on the surface of the lower splicing plate; in adjacent floor decking units, the upper splicing plate of one floor decking unit overlaps the lower splicing plate of another floor decking unit and is fixed by fixing bolts passing through the first horizontal strip hole and the corresponding second horizontal strip hole; the steel truss spans above the connection part of the two floor decking units, and both sides of the steel truss are fixed to the main body of the plate by connecting bolts provided in the connection hole.

[0009] Preferably, a lower connecting plate is provided at the bottom of the upper splicing plate along its inner side; the lower connecting plate is tunably connected to the first adjusting component; an upper connecting plate is provided at the top of the lower splicing plate along its inner side; the upper connecting plate is tunably connected to the second adjusting component.

[0010] Preferably, a first bearing is installed on the inner sidewall of the first groove near the front sidewall of the first groove; the first adjusting assembly includes a first lead screw and a first rotating shaft; the first lead screw is disposed in the first groove and passes through the lower connecting plate and is threadedly connected to the lower connecting plate; the inner end of the first lead screw is connected to the inner ring of the first bearing, and a first conical wheel is disposed on the first lead screw near the inner end; A second bearing is installed on the inner sidewall of the second groove, near the front sidewall of the second groove; the second adjusting assembly includes a second lead screw and a second rotating shaft; the second lead screw is disposed in the second groove and passes through the upper connecting plate and is threadedly connected to the upper connecting plate; the inner end of the second lead screw is connected to the inner ring of the second bearing, and a second conical wheel is disposed on the second lead screw near the inner end; Mounting grooves are respectively provided on the front sidewall of the main body of the plate, the inner sidewall near the first groove, and the inner sidewall of the second groove; the first rotating shaft and the second rotating shaft are respectively longitudinally arranged in the corresponding mounting grooves; the inner end of the first rotating shaft passes through the front sidewall of the first groove and extends into the corresponding first groove; a third conical wheel is provided on the first rotating shaft near its inner end; the third conical wheel meshes with the first conical wheel; the inner end of the second rotating shaft passes through the front sidewall of the second groove and extends into the corresponding second groove; a fourth conical wheel is provided on the second rotating shaft near its inner end; the fourth conical wheel meshes with the second conical wheel.

[0011] Preferably, the outer ends of the first and second rotating shafts are respectively provided with turntables; the surface of the turntables is provided with limiting bolts; the limiting bolts are threadedly connected to the turntables, and when it is necessary to fix the turntables, the inner end of the limiting bolts abuts against the inner sidewall of the first or second groove.

[0012] Preferably, the steel truss includes top chord bars and web bars; the top chord bars are arranged longitudinally above the connection point of the two floor slab units; there are two sets of web bars, which are respectively arranged at the bottom of both sides of the top chord bars, and each set of web bars is arranged at intervals along the longitudinal direction; the upper end of the web bars is connected to the top chord bars, and the lower end of the web bars is provided with an anchor plate; the connecting bolts are inserted in the anchor plate and threadedly connected to the corresponding connecting holes.

[0013] Preferably, a first slide rod is provided in the first groove; the first slide rod passes through the lower connecting plate and is slidably connected to the lower connecting plate; the inner end of the first slide rod is fixedly connected to the inner sidewall of the first groove; a second slide rod is provided in the second groove; the second slide rod passes through the upper connecting plate and is slidably connected to the upper connecting plate; the inner end of the second slide rod is fixedly connected to the inner sidewall of the second groove.

[0014] Preferably, a gasket is provided between the fixing bolt and the plate body.

[0015] Compared with the prior art, the present invention has the following features and beneficial effects.

[0016] 1. Traditional floor decking uses fixed-size formwork, requiring custom-made panels of varying lengths to meet different span requirements, resulting in high costs, long lead times, and complex inventory management. This new invention utilizes a laterally adjustable splicing design, allowing workers to quickly and conveniently adjust the combined length of floor decking units on-site according to the actual span needs. In actual construction, one or several sets of standard-sized floor decking units can cover various span requirements, greatly improving the product's versatility and applicability, and significantly reducing additional costs and waiting time caused by size variations.

[0017] 2. The prefabricated steel truss floor deck of this utility model serves as the base plate of the composite slab. On-site splicing can be completed through simple overlapping and bolt connections, resulting in high installation efficiency. During construction, when the spacing between the completed slab and the corresponding beam is insufficient for a standard slab length or width, the base plate can be installed by adjusting the length of the floor deck unit. Then, a concrete layer is poured on top of the prefabricated steel truss floor deck to complete the composite slab construction. This structure eliminates the need for custom-made load-bearing formwork of specific lengths, meeting precise span requirements.

[0018] 3. The structure of this utility model adopts a screw drive + bevel gear steering design: the first and second adjustment components use the screw and nut principle. The rotation of the screw drives the connecting plate to move linearly, and the longitudinal rotation (operating turntable) is converted into lateral linear motion (screw rotation) through the bevel gear set (the first / second bevel gear meshing with the third / fourth bevel gear). This design utilizes the mechanical gain of the screw, allowing workers to drive the movement of heavier splicing plates with relatively small force when rotating the turntable. Furthermore, the screw drive enables precise length adjustment to meet accurate span requirements.

[0019] 4. In this invention, the upper splicing plate is connected to the first adjusting component via the lower connecting plate, and the lower splicing plate is connected to the second adjusting component via the upper connecting plate. This design places the point of application of the adjusting force near the root of the splicing plate structure, ensuring the stability of the adjustment process and the structural strength. Simultaneously, the first and second sliding rods pass through the lower and upper connecting plates respectively, providing precise guidance for linear movement during the adjustment process, preventing the splicing plate from deflecting or jamming during movement, and ensuring smooth adjustment and accurate positioning.

[0020] 5. In this utility model, the steel truss spans above the connection between two splicing units, incorporating the splicing seam area into its stress range and enhancing the overall integrity. Through its innovative telescopic splicing structure, upper and lower splicing plates, horizontal strip holes, adjustment components, and stable connection design, this utility model fundamentally solves the problem that the length of traditional prefabricated steel truss floor decking is not adjustable and requires customization. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Figure 1 This is a structural schematic diagram of the prefabricated steel truss floor deck of this utility model.

[0023] Figure 2 This is a structural schematic diagram of the floor decking unit of this utility model.

[0024] Figure 3 This is a schematic diagram of the structure in which the first adjusting component is disposed in the first groove in this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the second adjustment component in the second groove of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure in which a baffle is provided at the mounting groove in this utility model.

[0027] Figure 6 This is a schematic diagram of the upper splicing plate in this utility model.

[0028] Reference numerals in the attached drawings: 1 – Floor deck unit, 1.1 – Slab body, 1.2 – Upper splice plate, 1.3 – Lower splice plate, 1.4 – Lower connecting plate, 1.5 – Upper connecting plate, 2 – Steel truss, 2.1 – Top chord reinforcement, 2.2 – Web reinforcement, 3 – Connecting hole, 4 – First groove, 5 – Second groove, 6 – First adjusting component, 6.1 – First lead screw, 6.2 – First rotating shaft, 6.3 – First conical wheel, 6.4 – Third conical wheel, 7 – Second adjusting component Section assembly, 7.1 - Second lead screw, 7.2 - Second rotating shaft, 7.3 - Second conical wheel, 7.4 - Fourth conical wheel, 8 - First horizontal bar hole, 9 - Second horizontal bar hole, 10 - Connecting bolt, 11 - First bearing, 12 - Second bearing, 13 - Mounting groove, 14 - Turntable, 15 - Limiting bolt, 16 - First slide rod, 17 - Second slide rod, 18 - Shim, 19 - Anchor plate, 20 - Baffle, 21 - Tie rod, 22 - Fixing bolt. Detailed Implementation

[0029] like Figure 1-6As shown, this prefabricated steel truss floor deck includes a floor deck unit 1 and a steel truss 2; the floor deck unit 1 has at least two pieces, which are spliced ​​together in the transverse direction; the floor deck unit 1 includes a main body 1.1, an upper splicing plate 1.2, and a lower splicing plate 1.3; the main body 1.1 has connecting holes 3 spaced longitudinally at its center; a first groove 4 is provided on the left or right side of the main body 1.1; the first groove 4 has a rectangular planar shape; a second groove 5 is provided on the right or left side of the main body 1.1; the second groove 5 has a horizontal U-shaped planar shape; a first adjusting component 6 is provided in the first groove 4, and a second adjusting component 7 is provided in the second groove 5; the upper splicing plate 1.2 is located on top of the first groove 4. The upper splicing plate 1.2 is laterally adjustable and connected to the first adjusting component 6. The upper splicing plate 1.2 has longitudinally spaced first horizontal strip holes 8. The lower splicing plate 1.3 is located in the second groove 5 and is laterally adjustable and connected to the second adjusting component 7. The lower splicing plate 1.3 has longitudinally spaced second horizontal strip holes 9. In adjacent floor decking units 1, the upper splicing plate 1.2 of one floor decking unit 1 overlaps the lower splicing plate 1.3 of another floor decking unit 1 and is fixed by fixing bolts 22 passing through the first horizontal strip holes 8 and the corresponding second horizontal strip holes 9. The steel truss 2 spans above the connection point of the two floor decking units 1, and both sides of the steel truss 2 are fixed to the main body 1.1 by connecting bolts 10 located in the connecting holes 3.

[0030] In this embodiment, a lower connecting plate 1.4 is provided at the bottom of the upper splicing plate 1.2 along its inner side; the lower connecting plate 1.4 is tunably connected to the first adjusting component 6; an upper connecting plate 1.5 is provided at the top of the lower splicing plate 1.3 along its inner side; the upper connecting plate 1.5 is tunably connected to the second adjusting component 7.

[0031] In this embodiment, a first bearing 11 is installed on the inner sidewall of the first groove 4 near the front sidewall of the first groove 4; the first adjusting assembly 6 includes a first lead screw 6.1 and a first rotating shaft 6.2; the first lead screw 6.1 is disposed in the first groove 4, and the first lead screw 6.1 passes through the lower connecting plate 1.4 and is threadedly connected to the lower connecting plate 1.4; the inner end of the first lead screw 6.1 is connected to the inner ring of the first bearing 11, and a first conical wheel 6.3 is disposed on the first lead screw 6.1 near the inner end; A second bearing 12 is installed on the inner wall of the second groove 5, near the front wall of the second groove 5; the second adjusting assembly 7 includes a second lead screw 7.1 and a second rotating shaft 7.2; the second lead screw 7.1 is disposed in the second groove 5, and the second lead screw 7.1 passes through the upper connecting plate 1.5 and is threadedly connected to the upper connecting plate 1.5; the inner end of the second lead screw 7.1 is connected to the inner ring of the second bearing 12, and a second conical wheel 7.3 is disposed on the second lead screw 7.1 near the inner end; by providing the second bearing 12, the second lead screw 7.1 is stabilized, thereby minimizing the shaking phenomenon of the second conical wheel 7.3 during rotation, thus ensuring the stability of the rotation of the second conical wheel 7.3; the plate body 1 Mounting grooves 13 are respectively provided on the front sidewall of .1, the inner sidewall near the first groove 4, and the inner sidewall of the second groove 5; the first rotating shaft 6.2 and the second rotating shaft 7.2 are respectively longitudinally arranged in the corresponding mounting grooves 13; the inner end of the first rotating shaft 6.2 passes through the front sidewall of the first groove 4 and extends into the corresponding first groove 4; a third conical wheel 6.4 is provided on the first rotating shaft 6.2 near its inner end; the third conical wheel 6.4 meshes with the first conical wheel 6.3; the inner end of the second rotating shaft 7.2 passes through the front sidewall of the second groove 5 and extends into the corresponding second groove 5; a fourth conical wheel 7.4 is provided on the second rotating shaft 7.2 near its inner end; the fourth conical wheel 7.4 meshes with the second conical wheel 7.3.

[0032] In this embodiment, turntables 14 are respectively provided at the outer ends of the first rotating shaft 6.2 and the second rotating shaft 7.2; a limiting bolt 15 is provided on the surface of the turntable 14; the limiting bolt 15 is threadedly connected to the turntable 14, and when it is necessary to fix the turntable 14, the inner end of the limiting bolt 15 abuts against the inner sidewall of the first groove 4 or the second groove 5. By providing the limiting bolt 15, the turntable 14 is locked, thereby minimizing the phenomenon of the turntable 14 rotating on its own, and thus ensuring the stability of the rotation of the turntable 14.

[0033] In this embodiment, the steel truss 2 includes an upper chord bar 2.1 and web bars 2.2. The upper chord bar 2.1 is longitudinally positioned above the connection point of the two floor deck units 1. There are two sets of web bars 2.2, respectively positioned at the bottom of both sides of the upper chord bar 2.1, with each set of web bars 2.2 spaced apart longitudinally. The upper end of the web bar 2.2 is connected to the upper chord bar 2.1, and the lower end of the web bar 2.2 is provided with an anchor plate 19. The connecting bolts 10 pass through the anchor plate 19 and are threadedly connected to the corresponding connecting holes 3. By providing the steel truss 2 and connecting bolts 10, it is convenient for workers to disassemble the steel truss 2, thereby making the main body 1.1 suitable for different types of steel trusses, thus increasing the practicality of the device.

[0034] In this embodiment, a first slide rod 16 is provided in the first groove 4; the first slide rod 16 passes through the lower connecting plate 1.4 and is slidably connected to the lower connecting plate 1.4; the inner end of the first slide rod 16 is fixedly connected to the inner sidewall of the first groove 4; a second slide rod 17 is provided in the second groove 5; the second slide rod 17 passes through the upper connecting plate 1.5 and is slidably connected to the upper connecting plate 1.5; the inner end of the second slide rod 17 is fixedly connected to the inner sidewall of the second groove 5. By providing the first slide rod 16 and the second slide rod 17, the movement trajectory of the upper splicing plate 1.2 and the lower splicing plate 1.3 is restricted, thereby minimizing the rotation of the upper splicing plate 1.2 and the lower splicing plate 1.3 during movement, and thus ensuring the stability of the splicing plate movement.

[0035] In this embodiment, a gasket 18 is provided between the fixing bolt 22 and the plate body 1.1. By providing the gasket 18, the plate body 1.1 is protected, thereby reducing the wear caused by the fixing bolt 22 on the plate body 1.1 and increasing the service life of the plate body 1.1.

[0036] In this embodiment, the area near the center of the main body 1.1 is defined as the inner side, and the area near the perimeter of the main body 1.1 is defined as the outer side.

[0037] In this embodiment, a baffle 20 is connected to the groove opening of the mounting groove 13 by a pin or hinge, and a pull rod 21 is fixedly installed on the front side of each baffle 20. The baffle 20 is made of rubber material. By setting the baffle 20, it plays the role of blocking the turntable 14. The installation of the pull rod 21 makes it convenient for workers to pull the baffle 20 out of the plate body 1.1.

[0038] The working principle of this utility model is as follows: In use, the worker first rotates the turntable 14, causing the turntable 14 to drive the first rotating shaft 6.2 and the second rotating shaft 7.2 to rotate. This causes the first rotating shaft 6.2 and the second rotating shaft 7.2 to drive the connected third conical wheel 6.4 and fourth conical wheel 7.4 to rotate, which in turn causes the third conical wheel 6.4 to drive the connected first conical wheel 6.3 to rotate, and the fourth conical wheel 7.4 to drive the connected second conical wheel 7.3 to rotate. Simultaneously, the first conical wheel 6.3 drives the first lead screw 6.1 to rotate, causing the first lead screw 6.1 to drive the upper splicing plate 1.2 to slide on the plate body 1.1. The second conical wheel 7.3 drives the second lead screw 7.1 to rotate, causing the second lead screw 7.3 to... .1 The lower splicing plate 1.3 slides on the main body 1.1, allowing the worker to adjust the length of the floor deck unit 1 according to construction needs. Then, the worker adjusts the corresponding lower splicing plate 1.3 on another floor deck unit 1 to match the length of the upper splicing plate 1.2 on the previous floor deck unit 1. Then, the adjacent lower splicing plate 1.3 and upper splicing plate 1.2 are stacked together and fixedly connected using fixing bolts 22. The turntable 14 is fixedly connected to the main body 1.1 using limiting bolts 15, thereby achieving the purpose of adjusting the length of the load-bearing template. Afterward, the worker places the steel truss 3 on the two main bodies 1.1 and fixes the steel truss 3 to the main body 1.1 using connecting bolts 10, thus completing the assembly process of the prefabricated steel truss floor deck.

[0039] The above embodiments are not exhaustive examples of specific implementation methods, and other embodiments may also exist. The purpose of the above embodiments is to illustrate the present utility model, rather than to limit the protection scope of the present utility model. All applications derived from simple variations of the present utility model fall within the protection scope of the present utility model.

Claims

1. A fabricated steel bar truss floor deck, characterized in that: The system includes a floor deck unit (1) and a steel truss (2); the floor deck unit (1) consists of at least two pieces, which are spliced ​​together in the transverse direction; the floor deck unit (1) includes a main body (1.1), an upper splicing plate (1.2), and a lower splicing plate (1.3); the main body (1.1) has connecting holes (3) spaced longitudinally at the middle position; a first groove (4) is provided on the left or right side of the main body (1.1); the first groove (4) has a rectangular planar shape; a second groove (5) is provided on the right or left side of the main body (1.1); the second groove (5) has a horizontal U-shaped planar shape; a first adjusting component (6) is provided in the first groove (4), and a second adjusting component (7) is provided in the second groove (5); the upper splicing plate (1.2) is located at the top of the first groove (4) and connected to the first adjusting component. (6) Horizontally adjustable connection; on the surface of the upper splicing plate (1.2), there are first horizontal strip holes (8) spaced along the longitudinal direction; the lower splicing plate (1.3) is set in the second groove (5) and is horizontally adjustable to the second adjustment component (7); on the surface of the lower splicing plate (1.3), there are second horizontal strip holes (9) spaced along the longitudinal direction; in adjacent floor decking units (1), the upper splicing plate (1.2) of one floor decking unit (1) overlaps the lower splicing plate (1.3) of another floor decking unit (1) and is fixed by fixing bolts (22) passing through the first horizontal strip hole (8) and the corresponding second horizontal strip hole (9); the steel truss (2) spans across the connection part of the two floor decking units (1) and the two sides of the steel truss (2) are fixed to the plate body (1.1) by connecting bolts (10) set in the connection hole (3).

2. The prefabricated steel bar trussed floor deck according to claim 1, characterized in that: A lower connecting plate (1.4) is provided at the bottom of the upper splicing plate (1.2) along its inner side; the lower connecting plate (1.4) is tunably connected to the first adjusting component (6); an upper connecting plate (1.5) is provided at the top of the lower splicing plate (1.3) along its inner side; the upper connecting plate (1.5) is tunably connected to the second adjusting component (7).

3. The prefabricated steel bar trussed floor deck according to claim 2, characterized in that: A first bearing (11) is installed on the inner sidewall of the first groove (4) near the front sidewall of the first groove (4); the first adjusting assembly (6) includes a first lead screw (6.1) and a first rotating shaft (6.2); the first lead screw (6.1) is disposed in the first groove (4) and passes through the lower connecting plate (1.4) and is threadedly connected to the lower connecting plate (1.4); the inner end of the first lead screw (6.1) is connected to the inner ring of the first bearing (11), and a first conical wheel (6.3) is disposed on the first lead screw (6.1) near the inner end. A second bearing (12) is installed on the inner sidewall of the second groove (5) near the front sidewall of the second groove (5); the second adjusting assembly (7) includes a second lead screw (7.1) and a second rotating shaft (7.2); the second lead screw (7.1) is disposed in the second groove (5) and passes through the upper connecting plate (1.5) and is threadedly connected to the upper connecting plate (1.5); the inner end of the second lead screw (7.1) is connected to the inner ring of the second bearing (12), and a second conical wheel (7.3) is disposed on the second lead screw (7.1) near the inner end. Mounting grooves (13) are respectively provided on the front sidewall of the plate body (1.1), the inner sidewall near the first groove (4), and the inner sidewall of the second groove (5); the first rotating shaft (6.2) and the second rotating shaft (7.2) are respectively longitudinally arranged in the corresponding mounting grooves (13); the inner end of the first rotating shaft (6.2) passes through the front sidewall of the first groove (4) and extends into the corresponding first groove (4); a third conical wheel (6.4) is provided on the first rotating shaft (6.2) near the inner end; the third conical wheel (6.4) meshes with the first conical wheel (6.3); the inner end of the second rotating shaft (7.2) passes through the front sidewall of the second groove (5) and extends into the corresponding second groove (5); a fourth conical wheel (7.4) is provided on the second rotating shaft (7.2) near the inner end; the fourth conical wheel (7.4) meshes with the second conical wheel (7.3).

4. The prefabricated steel bar trussed floor deck according to claim 3, characterized in that: The outer ends of the first rotating shaft (6.2) and the second rotating shaft (7.2) are respectively provided with turntables (14); the turntables (14) are provided with limit bolts (15); the limit bolts (15) are threadedly connected to the turntables (14), and when it is necessary to fix the turntables (14), the inner end of the limit bolts (15) is pressed against the inner sidewall of the first groove (4) or the second groove (5).

5. The prefabricated steel bar trussed floor deck according to claim 1, characterized in that: The steel truss (2) includes an upper chord (2.1) and web reinforcement (2.2); the upper chord (2.1) is arranged longitudinally above the connection of the two floor slab units (1); there are two sets of web reinforcement (2.2), which are respectively arranged at the bottom of the two sides of the upper chord (2.1), and each set of web reinforcement (2.2) is arranged longitudinally at intervals; the upper end of the web reinforcement (2.2) is connected to the upper chord (2.1), and the lower end of the web reinforcement (2.2) is provided with an anchor plate (19); the connecting bolt (10) passes through the anchor plate (19) and is threadedly connected to the corresponding connecting hole (3).

6. The prefabricated steel bar trussed floor deck according to claim 3, characterized in that: A first slide rod (16) is provided in the first groove (4); the first slide rod (16) passes through the lower connecting plate (1.4) and is slidably connected to the lower connecting plate (1.4); the inner end of the first slide rod (16) is fixedly connected to the inner sidewall of the first groove (4); a second slide rod (17) is provided in the second groove (5); the second slide rod (17) passes through the upper connecting plate (1.5) and is slidably connected to the upper connecting plate (1.5); the inner end of the second slide rod (17) is fixedly connected to the inner sidewall of the second groove (5).

7. The prefabricated steel bar trussed floor deck according to claim 1, characterized in that: A gasket (18) is provided between the fixing bolt (22) and the plate body (1.1).

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