Fabricated steel bar truss floor support plate and construction method

Abstract

The invention discloses a fabricated steel bar truss floor support plate and a construction method and relates to the field of floor slab structures. The assembly type steel bar truss floor support plate comprises a bottom plate and a plurality of steel bar truss bodies arranged on the top face of the bottom plate in parallel, and further comprises a plurality of positioning devices detachably connected with the bottom plate, and the positioning devices are used for pushing every two adjacent steel bar truss bodies to move towards the direction close to each other to be spaced by a preset distance and then fixed to the bottom plate. According to the fabricated steel bar truss floor support plate and the construction method provided by the invention, the steel bar truss bodies can be quickly and efficiently assembled and fixed on the bottom plate according to the preset spacing to form the fabricated steel bar truss floor support plate by arranging the positioning device, so that the operation steps required by personnel for assembling the steel bar truss bodies and the bottom plate are reduced; the time and labor required for assembling the steel bar truss body and the bottom plate are reduced, and the assembling efficiency and convenience of the steel bar truss body and the bottom plate are improved.

Description

Technical Field

[0001] The present application relates to the field of floor structures, and in particular, to an assembled steel truss floor deck and a construction method. Background Art

[0002] At present, the production of steel truss floor decking is carried out by first welding three specifications of steel bars together to form steel trusses, and then assembling and using the steel trusses and floor decking through multiple connectors or snap connections. In the construction industry, different houses have different acceptance standards, so that the bottom plate of the steel truss floor decking can be retained or disassembled for reuse.

[0003] However, since the steel truss needs to be positioned and locked multiple times when assembled with the base plate through multiple connectors or clips, the entire assembly process is relatively cumbersome, making the assembly process of the steel truss and the base plate time-consuming and labor-intensive, affecting the assembly efficiency of the steel truss and the base plate. Summary of the invention

[0004] The purpose of the present application is to provide an assembled steel truss floor deck and a construction method, which reduces the operating steps required for personnel to assemble the steel truss body and the base plate, reduces the time and manpower required for assembling the steel truss body and the base plate, and improves the assembly efficiency and convenience of the steel truss body and the base plate.

[0005] This application is implemented as follows:

[0006] The present application provides an assembled steel truss floor deck, which includes a base plate, a plurality of steel truss bodies arranged in parallel on the top surface of the base plate, and a plurality of positioning devices detachably connected to the base plate, the positioning devices being used to push two adjacent steel truss bodies toward each other to move to a preset distance between them and then be fixed to the base plate.

[0007] In some optional embodiments, the positioning device includes a positioning plate detachably connected to the base plate, a bidirectional screw rotatably connected to the positioning plate in the middle, two clamping blocks symmetrically arranged on both sides of the positioning plate and at least one guide rod, the two clamping blocks are respectively arranged on both ends of the bidirectional screw through threaded sleeves, and the guide rod slides through at least one clamping block; when the bidirectional screw rotates, it drives the two clamping blocks to move toward or away from each other, so as to push the adjacent steel bars of two adjacent steel trusses to move toward each other to both sides of the base plate to clamp or stop clamping the adjacent steel bars of the two adjacent steel trusses.

[0008] In some optional embodiments, a reinforcement device is connected to each side of the positioning device, and the two reinforcement devices are used to press or loosen the opposite steel bars in two adjacent steel bar trusses against the bottom plate.

[0009] In some optional embodiments, the reinforcement device includes a reinforcement bracket connected to the positioning device, a pressure plate arranged under the reinforcement bracket, a reinforcement screw that passes through a thread and connects the reinforcement bracket and the pressure plate, and at least one guide rod that slides through the reinforcement bracket and connects the pressure plate.

[0010] In some optional embodiments, a circular ring is provided on the sliding sleeve of the reinforcing screw, and limit blocks are hinged on both sides of the circular ring through rotating rods; when the reinforcing screw moves axially, it pushes the circular ring down, so that the two rotating rods drive the two limit blocks to move away from each other to press against the two adjacent webs of the steel truss body.

[0011] In some optional implementation schemes, the top surfaces at both ends of the pressure plate are respectively provided with sliding grooves, and the two limit blocks are respectively provided with sliding blocks that slide in the two sliding grooves.

[0012] In some optional implementation schemes, the two limit blocks are respectively provided with a slot for clamping the corresponding web.

[0013] In some optional embodiments, the base plate is connected to a plurality of positioning blocks, and a positioning hole is provided at the end of each positioning block; a positioning groove is provided at the bottom of the positioning plate for accommodating the positioning block, and the positioning plate is connected to an axially movable insertion rod; one end of the insertion rod is connected to a pull rod, and the other end slides through the positioning plate and is inserted into the positioning hole; a spring is provided on the insertion rod, and its two ends are respectively connected to the positioning plate and the pull rod.

[0014] In some optional implementation schemes, the positioning plate is further provided with at least one sliding groove, and the pull rod is provided with a sliding block slidably inserted in the sliding groove.

[0015] The present application also provides a construction method for the above-mentioned assembled steel bar truss floor deck, which comprises the following steps:

[0016] Arrange multiple steel bar trusses in parallel on the top surface of the bottom plate;

[0017] Removably connecting a plurality of positioning devices to the base plate;

[0018] Each positioning device pushes the adjacent steel bars of two adjacent steel bar trusses toward each other to move to a preset distance and then is fixed to the bottom plate.

[0019] The beneficial effects of the present application are as follows: the assembled steel truss floor deck provided by the present application includes a base plate, a plurality of steel truss bodies arranged in parallel on the top surface of the base plate, and a plurality of positioning devices detachably connected to the base plate, the positioning devices are used to push two adjacent steel truss bodies to move toward each other until they are fixed to the base plate at a preset distance. The assembled steel truss floor deck and construction method provided by the present application can quickly and efficiently assemble and fix the steel truss bodies on the base plate at a preset spacing to form an assembled steel truss floor deck by setting a positioning device, thereby reducing the operating steps required for personnel to assemble the steel truss bodies with the base plate, reducing the time and manpower required for assembling the steel truss bodies with the base plate, and improving the assembly efficiency and convenience of the steel truss bodies with the base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the partial structure of the assembled steel bar truss floor deck provided in the embodiment of the present application;

[0022] Figure 2 A schematic diagram of a partial structure of the assembled steel bar truss floor deck provided in the embodiment of the present application, in which only the bottom plate, the positioning blocks connected to the bottom plate and the two steel bar truss bodies are shown;

[0023] Figure 3 A schematic diagram of the structure of the connection between the positioning device and two reinforcement devices in the assembled steel bar truss floor deck provided in the embodiment of the present application;

[0024] Figure 4 A schematic structural diagram of a first-view positioning device in an assembled steel bar truss floor deck provided in an embodiment of the present application;

[0025] Figure 5 A structural schematic diagram of a second perspective of a positioning device in an assembled steel bar truss floor deck provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram of a partial structure of the connection between a positioning device and two reinforcement devices in an assembled steel bar truss floor deck provided in an embodiment of the present application;

[0027] Figure 7 A partial cross-sectional structural schematic diagram of a positioning device in an assembled steel bar truss floor deck provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of the structure of the assembly of the steel bar truss floor deck provided in the embodiment of the present application when the positioning device and the reinforcement brackets of the two reinforcement devices are connected;

[0029] Fig. 9 A schematic diagram of the partial structure of the reinforcement device in the assembled steel bar truss floor deck provided in the embodiment of the present application;

[0030] Fig.10 A schematic diagram of the partial structure of the connection between the circular ring, rotating rod and limit block of the reinforcement device in the assembled steel truss floor deck provided in an embodiment of the present application.

[0031] In the figure: 100, bottom plate; 110, steel bar truss body; 111, steel bar; 112, web member; 120, positioning block; 130, positioning hole; 200, positioning device; 210, positioning plate; 211, fixing seat; 212, ear plate; 213, through hole; 220, bidirectional screw; 221, baffle; 222, fixing sleeve; 223, rubber convex strip; 230, clamping block; 231, clamping groove; 232, clamping rubber strip; 240, guide rod; 250, positioning groove; 260, insertion rod; 270, pull rod; 271, sliding block; 280, spring; 290, sliding groove; 300, reinforcement bracket; 301, reinforcing rib; 310, pressure plate; 320, reinforcement screw; 321, rotating screw cap; 330, guide rod; 340, ring; 350, rotating rod; 360, limit block; 370, sliding groove; 380, slider; 390, slot. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The features and performance of the assembled steel truss floor deck and the construction method of the present application are further described in detail below in conjunction with the embodiments.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the embodiment of the present application provides an assembled steel bar truss floor deck, which includes a bottom plate 100, steel bar truss bodies 110 arranged in parallel and at intervals on the top surface of the bottom plate 100, and positioning devices 200 arranged at intervals. Figure 1 Only partial structures of two steel bar trusses 110 and a positioning device 200 are shown for reference. The steel bar trusses 110 include three parallel steel bars 111 and groups of web members 112 arranged at intervals along the length direction of each steel bar 111, wherein two steel bars 111 are arranged at intervals horizontally, and another steel bar 111 is arranged above the middle of the two steel bars 111. Each group of web members 112 includes three web members 112 arranged in a triangle, and the two ends of the three web members 112 of the same group are respectively connected to two adjacent steel bars 111; the positioning device 200 is detachably connected to the top surface of the bottom plate 100 and is used to push the two adjacent steel bar trusses 110 to move toward each other to a preset distance and then be fixed to the bottom plate 100;

[0041] The positioning device 200 includes a positioning plate 210 detachably connected to the base plate 100, a fixing seat 211 connected to the top of the positioning plate 210, a pair of ear plates 212 connected to the top of the fixing seat 211, a bidirectional screw 220 rotatably passing through and connecting the two ear plates 212 in the middle, two clamping blocks 230 symmetrically arranged on both sides of the positioning plate 210, and two guide rods 240 respectively connected to both sides of the fixing seat 211, the two clamping blocks 230 are respectively arranged on both ends of the bidirectional screw 220 through thread sleeves, the two guide rods 240 are coaxially arranged and slide through the two clamping blocks 230 respectively, the outer walls of the two ends of the bidirectional screw 220 are provided with external threads in opposite directions, the two ends of the bidirectional screw 220 are respectively connected with baffles 221, and the two guide rods 240 are respectively connected to the two ends of the bidirectional screw 220. 0 are respectively connected with two baffles 221, a fixed sleeve 222 located between the two ear plates 212 is provided on the middle fixed sleeve of the bidirectional screw 220, eight rubber convex strips 223 arranged at intervals along its circumference are provided on the outer wall of the fixed sleeve 222, and clamping grooves 231 are respectively provided on the adjacent sides of the two clamping blocks 230, and three clamping rubber strips 232 extending along the length direction thereof are provided on the inner wall of the clamping grooves 231; when the bidirectional screw 220 rotates, the two clamping blocks 230 are driven to move toward or away from each other, so that the two clamping grooves 231 push the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110 to move toward each other to the two sides of the bottom plate 100 to clamp or stop clamping the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110.

[0042] A reinforcing device is connected to each side of the fixing seat 211, and the two reinforcing devices are used to press or loosen the opposite steel bars 111 in two adjacent steel bar trusses 110 to the bottom plate 100; each reinforcing device includes a U-shaped reinforcing bracket 300 connected to the fixing seat 211 at one end, a pressing plate 310 arranged below the end of the reinforcing bracket 300 away from the fixing seat 211, a reinforcing screw 320 threaded through and connecting the reinforcing bracket 300 and the pressing plate 310, and two sliding screws passing through The reinforcement bracket 300 is connected to the guide rod 330 of the pressure plate 310, and two reinforcing ribs 301 are connected between the fixed seat 211 and the reinforcement bracket 300. The guide rod 330 is parallel to the reinforcement screw 320, and the top of the reinforcement screw 320 is connected to a rotating screw cap 321. When the reinforcement screws 320 of the two reinforcement devices rotate, they move up and down axially and drive the corresponding connected pressure plate 310 to move up and down to stop pressing or press the adjacent steel bars 111 of two adjacent steel bar trusses 110 against the bottom plate 100. A circular ring 340 is provided on the sliding sleeve of each reinforcing screw 320, and the two sides of the circular ring 340 are respectively hinged to the limit blocks 360 through the rotating rod 350, and the top surfaces of the two ends of the pressure plate 310 are respectively provided with sliding grooves 370, and the two limit blocks 360 are respectively provided with sliders 380 slidably arranged in the two sliding grooves 370; when the reinforcing screw 320 moves axially, it pushes the circular ring 340 to descend, so that the two rotating rods 350 drive the two limit blocks 360 to move away from each other to press against the two adjacent webs 112 of the corresponding steel truss body 110; the two limit blocks 360 are respectively provided with a clamping groove 390 for clamping the corresponding web 112.

[0043] The bottom plate 100 is connected with the positioning blocks 120 arranged at intervals, and the end of each positioning block 120 is provided with a positioning hole 130; the bottom of the positioning plate 210 is provided with a positioning groove 250 extending into the fixed seat 211, and the positioning groove 250 is used to accommodate the positioning block 120. The fixed seat 211 is provided with a through hole 213 connected to the positioning groove 250. The fixed seat 211 is connected with an axially movable plug rod 260, one end of the plug rod 260 is connected with a pull rod 270, and the other end slides through the through hole 213 on the positioning plate 210 and then extends into the positioning groove 250 and is inserted into the positioning hole 130. The plug rod 260 is sleeved with a spring 280 whose two ends are respectively connected to the positioning plate 210 and the pull rod 270. The top surface of the positioning plate 210 is also provided with two sliding grooves 290 arranged parallel to the axis of the plug rod 260, and the pull rod 270 is provided with two sliding blocks 271, and the two sliding blocks 271 are respectively slidably inserted in the two sliding grooves 290.

[0044] The present application also provides a construction method for the above-mentioned assembled steel bar truss floor deck, which comprises the following steps:

[0045] Step 1: Arrange the steel trusses 110 in parallel and at intervals on the top surface of the bottom plate 100, so that the positioning block 120 connected to the top surface of the bottom plate 100 is located between the two steel trusses 110;

[0046] Step 2, each positioning device 200 is detachably connected to the top surface of the base plate 100; push the pull rod 270 of the positioning device 200 to move in the direction away from the fixing seat 211, so that the pull rod 270 drives the insertion rod 260 to move in the direction away from the fixing seat 211 and stretch the spring 280, and then place the positioning plate 210 of the positioning device 200 between the two steel truss bodies 110 on the top surface of the base plate 100, so that the positioning block 120 connected to the top surface of the base plate 100 is inserted into the positioning groove 250 provided at the bottom of the positioning plate 210, and the positioning hole 130 provided at the end of the positioning block 120 is aligned with the through hole 213 opened on the fixing seat 211, at this time, the pull rod 270 can be released, and the stretched spring 280 drives the pull rod 270 to move in the opposite direction and reset, so that the pull rod 2 The insertion rod 260 connected to 70 moves in the opposite direction and moves in the direction close to the fixing seat 211 to the positioning hole 130 inserted into the end of the positioning block 120, so that the positioning plate 210 and the fixing seat 211 of the positioning device 200 are connected and fixed with the positioning block 120 at the top of the bottom plate 100 by using the insertion rod 260, so that the positioning device 200 is detachably connected to the top of the bottom plate 100; at this time, the bidirectional screw 220 of the positioning device 200 passes through two adjacent steel bar truss bodies 110, and the clamping blocks 230 arranged on both sides of the positioning plate 210 are respectively located on the outside of the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110, and the pressure plates 310 of the reinforcement device on both sides of the positioning plate 210 are respectively located above the two opposite steel bars 111 of the two adjacent steel bar truss bodies 110;

[0047] Step 3: Make the positioning device 200 push the two adjacent steel bar truss bodies 110 to move toward each other until they are fixed to the base plate 100 at a preset distance; first, move the two adjacent steel bar truss bodies 110 so that the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110 are respectively moved to the clamping grooves 231 of the two clamping blocks 230 that are clamped into the positioning device 200. At this time, the operator can hold the fixing sleeve 222 and rotate it to drive the bidirectional screw 220 to rotate, so that the two clamping blocks 230 that are threadedly sleeved on both ends of the bidirectional screw 220 are moved toward each other, so that the two clamping grooves 231 provided on the adjacent sides of the two clamping blocks 230 respectively push the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110 that are clamped together are moved toward each other to the two sides of the positioning plate 210 for fixing, and the adjacent steel bars 111 of the two adjacent steel bar truss bodies 110 are quickly and efficiently positioned and fixed by using the positioning device 200;

[0048] Step 4: The reinforcement devices connected to both sides of the positioning device 200 press the opposite steel bars 111 in the two adjacent steel bar trusses 110 against the bottom plate 100. The operator rotates the rotary screw caps 321 of the two reinforcement devices to drive the two reinforcement screws 320 to rotate, so that the two reinforcement screws 320 move downward along the axial direction when rotating and drive the two connected pressing plates 310 to descend, so that the two descending pressing plates 310 are used to press and fix the opposite steel bars 111 in the two adjacent steel bar trusses 110 against the top surface of the bottom plate 100, and at the same time, the two rotary screw caps 321 drive the two reinforcement screws When 320 rotates and descends, it pushes the ring 340 sleeved on the reinforcing screw 320 to descend, so that the two rings 340 respectively drive the rotating rods 350 hinged on both sides to rotate and drive the two limit blocks 360 to move away from each other, so that the card slots 390 set in the two limit blocks 360 in each reinforcement device respectively press against the two adjacent webs 112 of the corresponding steel bar truss body 110 to fix them, thereby realizing the axial positioning and fixation of the two back-to-back steel bars 111 in the two steel bar truss bodies 110, and completing the fast and efficient positioning and stable connection and fixation of the steel bar truss body 110 and the base plate 100.

[0049] Among them, the outer wall of the fixed sleeve 222 is provided with rubber ridges 223 arranged at intervals along its circumference. The rubber ridges 223 can be used to improve the stability of the operator holding the fixed sleeve 222 for rotation, ensuring that the bidirectional screw 220 is stably pushed to rotate and drive the two clamping blocks 230 to move towards or away from each other.

[0050] A clamping groove 231 is provided on each adjacent side of the two clamping blocks 230, which can stably clamp two adjacent steel bars 111 in the two steel bar trusses 110 and push them into position when the two clamping blocks 230 move toward each other. Three clamping rubber strips 232 are provided on the inner wall of the clamping groove 231, which can be used to buffer and fix the steel bars 111.

[0051] The top surface of the positioning plate 210 is also provided with two sliding grooves 290 arranged parallel to the axis of the insertion rod 260, and the pull rod 270 is provided with two sliding blocks 271. The two sliding blocks 271 are respectively slidably inserted in the two sliding grooves 290. When the operator pushes the pull rod 270 to drive the insertion rod 260 to move axially toward or away from the fixed seat 211, the pull rod 270 can drive the sliding blocks 271 to move along the sliding groove 290 to ensure that the pull rod 270 stably drives the insertion rod 260 to move.

[0052] Slide grooves 370 are respectively provided on the top surfaces of both ends of the pressure plate 310, and the two limit blocks 360 are respectively provided with sliders 380 slidingly arranged in the two slide grooves 370. When the two circular rings 340 respectively descend and drive the rotating rods 350 hinged on both sides to rotate and push the two limit blocks 360 to move away from each other, the sliders 380 connected to the limit blocks 360 move along the slide grooves 370, thereby ensuring that when the circular ring 340 descends, the two limit blocks 360 are pushed stably in the directions away from each other and in the slide grooves 370 to press against the two adjacent webs 112 of the corresponding steel bar truss body 110.

[0053] For the convenience of display, in this embodiment, only two steel truss bodies 110 and one positioning device 200 are shown, and the steel truss body 110 only shows a partial structure and four groups of web members 112, which does not mean that the assembled steel truss floor deck only includes two steel truss bodies 110 and one positioning device 200.

[0054] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. An assembled steel bar truss floor deck, comprising a bottom plate, and a plurality of steel bar trusses arranged in parallel on the top surface of the bottom plate, characterized in that: It also includes a plurality of positioning devices detachably connected to the bottom plate, and the positioning devices are used to push two adjacent steel bar trusses to move toward each other until they are separated by a preset distance and then fixed to the bottom plate.

2. The assembled steel bar truss floor deck according to claim 1, characterized in that: The positioning device includes a positioning plate detachably connected to the base plate, a bidirectional screw rod rotatably connected to the positioning plate in the middle, two clamping blocks symmetrically arranged on both sides of the positioning plate and at least one guide rod, the two clamping blocks are respectively arranged on both ends of the bidirectional screw rod by threaded sleeves, and the guide rod slides through at least one of the clamping blocks; when the bidirectional screw rod rotates, it drives the two clamping blocks to move toward or away from each other, so as to push the adjacent steel bars of the two adjacent steel bar trusses to move toward each other to the two sides of the base plate to clamp and fix or stop clamping the adjacent steel bars of the two adjacent steel bar trusses.

3. The assembled steel bar truss floor deck according to claim 1, characterized in that: A reinforcing device is respectively connected to both sides of the positioning device, and the two reinforcing devices are respectively used to press or loosen the back-to-back steel bars in two adjacent steel bar trusses against the bottom plate.

4. The assembled steel bar truss floor deck according to claim 3 is characterized in that: The reinforcement device includes a reinforcement bracket connected to the positioning device, a pressure plate arranged below the reinforcement bracket, a reinforcement screw threadedly passing through and connecting the reinforcement bracket and the pressure plate, and at least one guide rod sliding through the reinforcement bracket and connected to the pressure plate.

5. The assembled steel bar truss floor deck according to claim 4 is characterized in that: A circular ring is provided on the sliding sleeve of the reinforcing screw, and the two sides of the circular ring are respectively hinged to limit blocks through rotating rods; when the reinforcing screw moves axially, it pushes the circular ring to descend, so that the two rotating rods drive the two limit blocks to move away from each other and press against the two adjacent webs of the steel truss body.

6. The assembled steel bar truss floor deck according to claim 5, characterized in that: The top surfaces at both ends of the pressing plate are respectively provided with sliding grooves, and the two limit blocks are respectively provided with sliding blocks slidably arranged in the two sliding grooves.

7. The assembled steel bar truss floor deck according to claim 5, characterized in that: The two limit blocks are respectively provided with a clamping groove for clamping the corresponding web rod.

8. The assembled steel bar truss floor deck according to claim 2, characterized in that: The base plate is connected to a plurality of positioning blocks, and a positioning hole is provided at the end of each positioning block; a positioning groove is provided at the bottom of the positioning plate for accommodating the positioning block, and the positioning plate is connected to an axially movable insertion rod; one end of the insertion rod is connected to a pull rod, and the other end slides through the positioning plate and is inserted into the positioning hole; a spring is sleeved on the insertion rod, and its two ends are respectively connected to the positioning plate and the pull rod.

9. The assembled steel bar truss floor deck according to claim 8, characterized in that: The positioning plate is further provided with at least one sliding groove, and the pull rod is provided with a sliding block slidably inserted in the sliding groove.

10. The construction method of the assembled steel bar truss floor deck according to any one of claims 1 to 9, characterized in that: It includes the following steps: Arrange multiple steel bar trusses in parallel on the top surface of the bottom plate; Removably connecting a plurality of positioning devices to the base plate; The positioning device is used to push adjacent steel bars of two adjacent steel bar trusses toward each other to move to a preset distance and then be fixed to the bottom plate.

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