Assembled steel bar truss floor deck and construction method

Abstract

An assembled steel truss floor deck and a construction method relate to the field of floor structure. The assembled steel truss floor deck 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. The assembled steel truss floor deck and the construction method provided in 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 providing 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.

Description

Technical Field

[0001] The present application relates to the field of floor slab structures, and more specifically, to an assembled steel truss floor slab 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 into steel trusses, and then assembling 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, resulting in the assembly process of the steel truss and the base plate being 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 this 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 parallel to 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 toward each other and move them to a preset distance apart and then fix them 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 threaded on both ends of the bidirectional screw, 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 the two adjacent steel trusses to move toward each other to the two 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 threaded through and connecting the reinforcement bracket and the pressure plate, and at least one guide rod sliding through the reinforcement bracket to connect the pressure plate.

[0010] In some optional embodiments, a circular ring is provided on the sliding sleeve of the reinforcing screw, and the two sides of the circular ring are respectively hinged with limit blocks 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 sliders that slide in the two sliding grooves.

[0012] In some optional implementation schemes, the two limiting 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, with its two ends respectively connected to the positioning plate and the pull rod.

[0014] In some optional embodiments, the positioning plate is further provided with at least one sliding groove, and the pull rod is provided with a sliding block slidably inserted into 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 trusses in parallel on the top surface of the base 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 between them and then fixes them to the bottom plate.

[0019] The beneficial effects of the present application are as follows: the prefabricated 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, wherein the positioning devices are 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. The prefabricated 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 a prefabricated steel truss floor deck by providing a positioning device, thereby reducing the number of 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 following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the partial structure of the assembled steel bar truss floor deck provided in an 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 an embodiment of the present application showing only the bottom plate, the positioning blocks connected to the bottom plate, and the two steel bar truss bodies;

[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 an embodiment of the present application;

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

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

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

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

[0028] Figure 8 This is an abbreviated structural diagram of the connection between the positioning device and the reinforcement brackets of the two reinforcement devices in the assembled steel bar truss floor deck provided by the embodiment of the present application;

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

[0030] Figure 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; 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, reinforcement rib; 310, pressure plate; 320, reinforcement screw; 321, rotating cap; 330, guide rod; 340, ring; 350, rotating rod; 360, limit block; 370, slide groove; 380, slider; 390, slot. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein 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 protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application 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, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0038] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean 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 、 Figure 9 、 Figure 10 As shown, the embodiment of the present application provides an assembled steel bar truss floor deck, which includes a base plate 100, steel bar truss bodies 110 arranged parallel to each other on the top surface of the base 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 spaced apart along the length of each steel bar 111. Two of the steel bars 111 are spaced apart horizontally, and another steel bar 111 is located above and between the two steel bars 111. Each group of web members 112 includes three web members 112 arranged in a triangle. The ends of the three web members 112 in 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 base plate 100 and is used to push the two adjacent steel bar trusses 110 toward each other until they are separated by a preset distance and then fixed to the base plate 100.

[0041] Among them, 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 threaded on both ends of the bidirectional screw 220, 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 to baffles 221, and the two guide rods 24 0 are respectively connected to the two baffles 221, the middle fixed sleeve of the bidirectional screw 220 is provided with a fixing sleeve 222 located between the two ear plates 212, the outer wall of the fixing sleeve 222 is provided with eight rubber ridges 223 arranged at intervals along its circumference, and the adjacent sides of the two clamping blocks 230 are respectively provided with a clamping groove 231, and the inner wall of the clamping groove 231 is provided with three clamping rubber strips 232 extending along the length direction thereof; when the bidirectional screw 220 rotates, it drives the two clamping blocks 230 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 trusses 110 toward each other and move to both sides of the bottom plate 100 to clamp or stop clamping the adjacent steel bars 111 of the two adjacent steel bar trusses 110.

[0042] A reinforcing device is connected to each side of the fixing seat 211, and the two reinforcing devices are used to press the opposite steel bars 111 in the two adjacent steel bar trusses 110 against the bottom plate 100 or loosen them; each reinforcing device includes a U-shaped reinforcing bracket 300 connected to the fixing seat 211 at one end, a pressing plate 310 provided 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 rise and fall, stop pressing or press the adjacent steel bars 111 of the 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. 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 sliding 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 base plate 100 is connected to 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 to an axially movable rod 260, one end of the rod 260 is connected to 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 rod 260 is provided 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 rod 260. The pull rod 270 is provided with two sliding blocks 271, and the two sliding blocks 271 are respectively slidably inserted into the two sliding grooves 290.

[0044] The present application also provides a method for constructing the above-mentioned assembled steel bar truss floor deck, which includes 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 stretches the spring 280, and then places the positioning plate 210 of the positioning device 200 between the two steel trusses 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 to the positioning block 120 at the top of the base plate 100 by using the insertion rod 260, so that the positioning device 200 is detachably connected to the top of the base plate 100; at this time, the bidirectional screw 220 of the positioning device 200 passes through the two adjacent steel bar truss bodies 110, and the clamping blocks 230 provided 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 devices on both sides of the positioning plate 210 are respectively located above the two back-to-back steel bars 111 of the two adjacent steel bar truss bodies 110;

[0047] Step 3: The positioning device 200 pushes the two adjacent steel bar trusses 110 to move toward each other to a preset distance between them and then fix them on the bottom plate 100; first, move the two adjacent steel bar trusses 110 so that the adjacent steel bars 111 of the two adjacent steel bar trusses 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 threadedly sleeved on both ends of the bidirectional screw 220 move toward each other, so that the two clamping grooves 231 set on the adjacent sides of the two clamping blocks 230 respectively push the adjacent steel bars 111 of the clamped two adjacent steel bar trusses 110 to move toward each other to both sides of the positioning plate 210 for fixation, and use the positioning device 200 to quickly and efficiently position and fix the adjacent steel bars 111 of the two adjacent steel bar trusses 110;

[0048] Step 4: The reinforcement devices connected to both sides of the positioning device 200 press the opposite steel bars 111 of 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 axially downward when rotating and drive the two connected pressure plates 310 to descend, thereby using the two descending pressure plates 310 to press the opposite steel bars 111 of 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 truss body 110 to fix them, thereby realizing axial positioning and fixation of the two back-to-back steel bars 111 in the two steel truss bodies 110, and completing the fast and efficient positioning and stable connection and fixation of the steel 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 toward 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 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. 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 drives 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] The top surfaces of both 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 sliding in the two sliding 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 sliding grooves 370, thereby ensuring that when the circular ring 340 descends, it pushes the two limit blocks 360 to stably move away from each other and in the sliding 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 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 making creative efforts are within the scope of protection of this application.

Claims

1. An assembled steel truss floor deck, comprising a bottom plate and a plurality of steel truss bodies arranged in parallel on the top surface of the bottom plate, characterized in that: The cam is adapted to move the two adjacent members toward each other, wherein the two members are arranged to move relative to each other to move the two adjacent members closer to each other, and the two members are adapted to move relative to each other to move the two adjacent members closer to each other. Adjacent steel bars of the steel bar truss body; a reinforcement device is respectively connected to both sides of the positioning device, and the two reinforcement devices are respectively used to press the back-to-back steel bars in the two adjacent steel bar trusses against the base plate or loosen them; 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 and connects the reinforcement bracket and the pressure plate through a thread, and at least one guide rod that slides through the reinforcement bracket and connects the pressure plate; a sliding sleeve is provided on the reinforcement screw, and the two sides of the ring are respectively hinged to limit blocks by rotating rods; when the reinforcement screw moves axially, it pushes the ring down, so that the two rotating rods drive the two limit blocks to move in a direction away from each other to press against the two adjacent webs of the steel bar truss body.

2. The assembled steel bar truss floor deck according to claim 1, 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 that are slidably arranged in the two sliding grooves.

3. The assembled steel bar truss floor deck according to claim 1, characterized in that: The two limit blocks are respectively provided with a slot for clamping the corresponding web.

4. The assembled steel bar truss floor deck according to claim 1, 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.

5. The assembled steel bar truss floor deck according to claim 4, 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 into the sliding groove.

6. The construction method of the assembled steel bar truss floor deck according to any one of claims 1 to 5, characterized in that: It includes the following steps: Arrange multiple steel trusses in parallel on the top surface of the base plate; detachably connecting a plurality of positioning devices to the base plate; The positioning device is used to push the adjacent steel bars of two adjacent steel bar trusses toward each other to move to a preset distance between them and then fix them to the bottom plate.

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