An assembled non-disassembly steel truss floor deck and construction technology

Abstract

The present invention relates to a steel truss floor decking construction technology, specifically an assembled non-disassembly steel truss floor decking and a construction process. An assembled non-disassembly steel truss floor decking comprises a base plate made of concrete and a steel truss fixed to the base plate by vertical rigid clamping, a steel mesh is embedded in the base plate, and a plurality of embedded parts suitable for vertical rigid clamping and fixing the steel truss are orderly connected to the steel mesh, an opening is provided on the bottom side of the embedded part, the opening is suitable for the upper and lower adaptation installation of the steel mesh, an installation groove is vertically provided on the embedded part, an internal threaded hole is vertically arranged at the bottom of the installation groove and a screw is connected through the internal threaded hole, the bottom of the screw can enter the inside of the opening, a pressure plate that moves up and down is installed inside the opening, the top of the pressure plate and the bottom of the screw are suitable for rotational matching installation, and the pressure plate slides up and down inside the opening, a connection structure is provided on the top of the embedded part, and the connection structure is suitable for assembly with the steel truss to complete rigid clamping and fixing.

Description

Technical Field

[0001] The present invention relates to a steel truss floor deck construction technology, in particular to an assembled, disassembly-free steel truss floor deck and a construction process. Background Art

[0002] Steel truss floor decking is widely used in steel structures such as power plants, car showrooms, airport terminals, railway stations, and stadiums due to its stable quality, uniform steel distribution, and precise dimensions. Steel truss floor decking generally includes a base plate and steel trusses connected to the base plate. The existing steel trusses are fixed to the base plate through connecting fasteners. The steel truss floor decking can meet the requirements of rapid construction of the main steel structure and provide a firm working platform in a short time.

[0003] At present, most floor decking plates are prefabricated in prefabrication plants. The floor decking plates are prefabricated concrete structures composed of a base plate and a steel truss. A steel mesh is embedded in the base plate, and the steel truss is connected to the base plate through embedded steel bars. For example, CN219033727U discloses a mesh base plate covered with concrete in paragraphs

[0010] and

[0011] . Due to the presence of the steel truss, it is easy to cause contamination of the steel truss and uneven thickness and hollowness of the base plate, resulting in insufficient pressure on the floor decking plates. Summary of the Invention

[0004] In order to solve the above-mentioned shortcomings, the present invention proposes a new type of dismantling-free steel truss floor deck. The inventor has obtained the following technical solutions through practice and summary:

[0005] An assembled, non-disassembly-required steel truss floor deck comprises a base plate of concrete and a steel truss vertically rigidly clamped and fixed to the base plate, wherein a steel mesh is embedded in the base plate, and a plurality of embedded parts suitable for vertically rigidly clamping and fixing the steel truss are connected in order to the steel mesh, an opening is provided on the bottom side of the embedded part, and the opening is suitable for the upper and lower adaptive installation of the steel mesh, an installation groove is vertically provided on the embedded part, an internal threaded hole is vertically arranged at the bottom of the installation groove and a screw is connected through the internal threaded hole, the bottom of the screw can enter the inside of the opening, and a pressure plate that moves up and down is installed inside the opening, the top of the pressure plate and the bottom of the screw are suitable for rotationally matching installation, and the pressure plate slides up and down inside the opening, and a connecting structure is provided on the top of the embedded part, and the connecting structure is suitable for rigid clamping and fixing with the steel truss when assembled up and down.

[0006] Preferably, a limit plate is provided on the embedded part, and the limit plate is made of waste steel plates / sheets on site. The limit plate is suitable for controlling the thickness of the bottom plate concrete.

[0007] Preferably, the connection structure includes a connection port arranged on the top of the embedded part, the connection port is suitable for installing a steel truss, and two parallel connection plates are extended upward on one side of the top of the connection port. A clamping plate is movably installed on the two connection plates, and the clamping plate and the connection plate have relative sliding and rotation. A stopper is installed on the side of the connection plate facing away from the opening, and the stopper is suitable for controlling the outward rotation angle of the clamping plate to the horizontal to complete rigid clamping and fixation.

[0008] Preferably, a guide groove is provided on the extension direction of the clamping plate, and a slider and a flat spring suitable for flexibly installing the slider are slidably installed inside the guide groove. The slider and the connecting plate are rotatably matched and a torsion spring is installed at the rotation node. A passive bearing body is installed on the opposite side of the two connecting plates, and an arc-shaped pressure body is installed on the side of the clamping plate opposite to the connecting plate. The arc-shaped pressure body is suitable for resisting the passive bearing body and then compressing the flat spring and moving outward relative to the passive bearing body when the clamping plate rotates toward the connecting port. The flat spring and the torsion spring are suitable for forcing the clamping plate to rotate outward and complete the rigid clamping fixation after the corresponding steel bars on the steel truss fully enter the connecting port.

[0009] Preferably, the steel truss includes upper chords, lower chords and web bars, the web bars include two groups and the projections of the two groups in the length direction are symmetrically arranged, the two ends of the upper chords and the lower chords are welded and fixed by connecting plates, and the upper chords are suitable for limiting the tops of the two groups of web bars on the left and right.

[0010] Preferably, the tops of the two groups of web reinforcements are arranged in a socket-and-spigot manner, and the upper chord reinforcement includes two symmetrically arranged blocks that extend freely downward, and the two blocks are suitable for controlling the outward rotation angles of the tops of the two groups of web reinforcements after the tops of the two groups of web reinforcements cross.

[0011] Preferably, the connecting piece comprises a T-shaped structural steel plate, the bottom ends of the connecting piece are suitable for fixing two groups of lower chord ribs, and the top end of the connecting piece is suitable for fixing upper chord ribs.

[0012] Preferably, the web reinforcement is adapted to be located on the outer side of the lower chord reinforcement on the same side and to be overlapped and fixed thereto, and the top thereof is abutted and fixed to the inner top of the baffle on the other side.

[0013] An assembly process for an assembled, non-disassembly-required steel truss floor deck, wherein the steps for splicing two adjacent floor decks are as follows:

[0014] Waterproof sealant is applied to the joint area of ​​two adjacent base plates, the two base plates are horizontally extruded and spliced, and vertical rigid clamping and fixing are completed through the connection structure of the steel truss and the embedded parts of the two base plates near the joint area.

[0015] A construction process for an assembled, non-disassembly-required steel truss floor deck, the construction steps are as follows:

[0016] Step 1: Baseboard prefabrication

[0017] Place concrete pads in the precast mold according to the specified position in the drawing design, and install the steel mesh on the pads. The pressure plate, screws, and openings must be installed on the steel bars on the steel mesh in advance. Wrap the connection structure with concrete curing film, pour concrete and vibrate it until it just covers the limit plate. Cure the concrete and remove it from the mold after it reaches the designed strength.

[0018] Step 2: Assembly of floor decking units

[0019] The bottom of the web reinforcement of a single group of steel trusses is fixed to the corresponding connection structure with vertical rigid clamping. The upper chord, lower chord and connecting plate of the steel truss are placed in the middle of the two web reinforcements and arranged in the air. The two web reinforcements are rotated inward and overlapped on the outside of the corresponding lower chord. The upper chord is lowered and fixed by inserting the top of the web reinforcement through the two blocking bodies at the top. Finally, the web reinforcement is welded to the lower chord and upper chord, and embedded parts are reserved for the single splicing area of ​​the floor deck.

[0020] Step 3: Support system installation

[0021] Install support members vertically at the bottom of the area where the floor deck is to be installed, adjust the top elevation of the support members and control them to be at the same height, install a fixing plate on the top of the support members, and arrange three groups of support bodies in a circular manner with equal intervals on the top of the fixing plate. Universal joints are arranged at both ends of the support bodies, and the support bodies are connected to the fixing plate and the horizontal support plate through the universal joints at both ends. The three groups of support bodies are all inclined upward and arranged near the middle of the horizontal support plate, and the horizontal support plate and the universal joints at the corresponding ends are used to horizontally support the floor deck unit to be installed;

[0022] Step 4: Hoisting and assembling of floor decking units

[0023] Apply waterproof sealant to the side of the splicing area of ​​the two adjacent floor decking units, first vertically lift the floor decking units to the equipment height by a crane, and then complete the side extrusion sealing by horizontal transverse extrusion and vertical drop, and complete the vertical clamping and fixing of the connection structure on the embedded parts reserved in step 2 and the web reinforcement of the steel truss to be spliced, and place the combination of the upper chord, lower chord and connecting piece of the steel truss to be spliced ​​in the middle of the two web reinforcements and arrange them in the air, and rotate the two web reinforcements inward to overlap the outer side of the corresponding lower chord reinforcement, and drop the upper chord reinforcement through the two blocking bodies at the top to complete the fixation, and finally weld the web reinforcement to the lower chord reinforcement and upper chord reinforcement; weld the end of the upper chord reinforcement to the main beam through the discarded steel bar head;

[0024] Step 5: Concrete pouring

[0025] Reinforcement steel bars are tied to the top of the assembled single steel truss of the floor deck, and then concrete is poured on it. After the concrete reaches the design strength, the support system is removed.

[0026] Compared with the prior art, the present invention has the following beneficial effects: by setting embedded parts, using the upper limit plate of the embedded parts to control the thickness of the bottom plate concrete, using the bottom opening to control the height of the pressure plate inside the opening through the screw to realize the fixing of the steel mesh and the embedded parts, using the connection structure to fix the web reinforcement of the steel truss vertically, the bottom of the web reinforcement moves downward to squeeze the clamping plate, forcing the clamping plate to rotate toward the inside of the connection port, when the arc-shaped pressure body on the clamping plate acts on the passive bearing body, as the web reinforcement continues to enter, the clamping plate moves outward relative to the passive bearing body, forcing it to move outward relative to the web reinforcement, when the bottom of the web reinforcement passes through the top of the clamping plate After that, the clamping plate will rotate outwards under the action of the flat spring and the torsion spring, forcing it to reset. The end of the clamping plate will eventually abut against the stopper, and the free end will be rigidly clamped on the outer circle of the web reinforcement, so that the upper and lower web reinforcements are rigidly clamped and installed. At the same time, the connecting structure also serves as a positioning frame during assembly of the steel truss. The two clamped web reinforcements are rotated toward the middle and overlapped on the outside of the lower chord reinforcement. The combination of the lower chord reinforcement, the upper chord reinforcement and the connecting plate is dropped, so that the top of the web reinforcement is interlocked and fixed to the stopper. At this time, the web reinforcement, the lower chord reinforcement and the upper chord reinforcement are welded to ensure straightness, consistency, and stability and reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the floor deck of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0029] Figure 3 is a cross-sectional view of the steel truss of the present invention;

[0030] Figure 4 This is a cross-sectional view of the connection structure at the top of the embedded part in the present invention;

[0031] Figure 5 It is a top view of the end of the steel truss of the present invention;

[0032] Figure 6 A diagram showing the connection between the floor decking and its supporting system of the present invention;

[0033] Figure 7 This is a positional relationship diagram of the supporting part of the floor decking of the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] The bottom of the embedded part 40 is provided with an opening 41, and the opening 41 is suitable for the upper and lower adaptation installation of the steel mesh 30. The embedded part 40 is provided with an installation groove 42 vertically, and the bottom of the installation groove 42 is vertically provided with an internal threaded hole and a screw 43 is connected through the internal threaded hole. The bottom of the screw 43 can enter the inside of the opening 41, and a pressure plate 44 that moves up and down is installed inside the opening 41. The top of the pressure plate 44 and the bottom of the screw 43 are suitable for rotational matching installation, and the pressure plate 44 slides up and down inside the opening 41. The top of the embedded part 40 is provided with a connecting structure, and the connecting structure is suitable for rigid connection and fixation with the steel truss. The vertical adjustment screw 43 moves the pressing plate 44 downward along the opening and completes the crimping and fixing of the steel mesh that has previously entered the interior of the opening.

[0037] A limit plate 45 is provided on the embedded part 40 . The limit plate 45 is made of steel plates / sheets discarded on site. The limit plate 45 is suitable for controlling the concrete thickness of the base plate 10 .

[0038] The connection structure includes a connection port 46 arranged at the top of the embedded part 40, and the connection port 46 is suitable for installing a steel truss. Two parallel connection plates 47 are extended upward on one side of the top of the connection port 46. A clamping plate 49 is movably installed on the two connection plates 47. The clamping plate 49 and the connection plate 47 have relative sliding and rotation. A stopper 48 is installed on the side of the connection plate 47 facing away from the opening 41. The stopper 48 is suitable for controlling the outward rotation angle of the clamping plate 49 to the horizontal to complete rigid clamping and fixation.

[0039] A guide groove 410 is provided on the clamping plate 49 in the extension direction, and a slider 411 and a flat spring 412 suitable for flexibly installing the slider 411 are slidably installed inside the guide groove 410. The slider 411 and the connecting plate 47 are rotatably matched and a torsion spring is installed at the rotation node. A passive bearing body 413 is installed on the opposite side of the two connecting plates 47, and an arc-shaped pressure body 414 is installed on the side of the clamping plate 49 opposite to the connecting plate 47. The arc-shaped pressure body 414 is suitable for resisting the passive bearing body 413 when the clamping plate 49 rotates toward the connecting port 46, and then compressing the flat spring 412 and moving outward relative to the passive bearing body 413. The flat spring 412 and the torsion spring are suitable for forcing the clamping plate 49 to rotate outward and complete the rigid clamping fixation after the corresponding steel bars on the steel truss fully enter the connecting port 46.

[0040] During use, the web reinforcement of the steel truss is moved downward to squeeze the clamping plate 49, forcing the clamping plate 49 to deflect. When the arc-shaped pressure body 414 on the clamping plate 49 contacts the passive bearing body 413, the web portion continues to rotate, causing the arc-shaped pressure body 414 to move outward relative to the passive bearing body 413, that is, the clamping plate 49 moves outward relative to the connecting plate 47 and the slider 411 and compresses the flat spring 412. When the bottom of the web reinforcement passes the top of the free end of the clamping plate 49, the clamping plate 49 is reset under the action of the torsion spring and the flat spring 412, causing the free end to be rigidly clamped to the outside of the web reinforcement, and the other end will abut against the stopper 48.

[0041] Based on the above embodiment, the following improvements are made: the steel truss includes an upper chord 21, a lower chord 22 and a web rib 23. The web rib 23 includes two groups and the projections of the two groups in the length direction are symmetrically arranged. The two ends of the upper chord 21 and the lower chord 22 are welded and fixed by connecting plates 24. The upper chord 21 is suitable for limiting the tops of the two groups of web ribs 23 on the left and right.

[0042] The tops of the two groups of web reinforcements 23 are arranged in a socket-and-spigot manner, and the upper chord reinforcement 21 includes two symmetrically arranged baffles 211 that extend freely downward. The two baffles 211 are suitable for controlling the outward rotation angles of the tops of the two groups of web reinforcements 23 after the tops of the two groups of web reinforcements 23 cross.

[0043] The connecting piece 24 comprises a T-shaped structural steel plate. The bottom ends of the connecting piece 24 are suitable for fixing the two sets of lower chord bars 22 , and the top end of the connecting piece 24 is suitable for fixing the upper chord bar 21 .

[0044] The web reinforcement 23 is adapted to be located on the outer side of the lower chord reinforcement 22 on the same side and to be overlapped and fixed thereto, and the top thereof is abutted and fixed to the inner top of the blocking body 211 on the other side.

[0045] The connecting structure also serves as a positioning frame for the steel truss during assembly. The two clamped web bars 23 are rotated toward the middle and overlapped on the outside of the lower chord bar 22. The combination of the lower chord bar 22, the upper chord bar 21 and the connecting piece 24 is dropped, so that the top of the web bar 23 is inserted into each other and fixed to the retaining body 211. At this time, the web bar 23, the lower chord bar 22 and the upper chord bar 21 are welded to ensure the straightness, consistency and structural stability and reliability of the steel truss.

[0046] A process for assembling assembled non-disassembly steel truss floor decks, characterized in that the steps of splicing two adjacent floor decks are as follows:

[0047] Waterproof sealant is applied to the joint area of ​​two adjacent base plates 10, and the two base plates 10 are laterally extruded and spliced ​​together, and vertical rigid clamping and fixing are completed through the connection structure in the steel truss and the embedded parts 40 of the two base plates 10 near the joint area.

[0048] A construction process for an assembled, non-disassembly-required steel truss floor deck, the construction steps are as follows:

[0049] Step 1: Prefabrication of base plate 10

[0050] Place concrete pads in the precast mold according to the specified position in the drawing design, and install the steel mesh 30 on the pads. Install the pressure plate 44, screw 43, and opening 41 on the steel bars on the steel mesh 30 in advance. Wrap the connection structure with concrete curing film, pour concrete and vibrate it until it just covers the limit plate 45. Cure the concrete and remove it from the mold after it reaches the designed strength.

[0051] Step 2: Assembly of floor decking units

[0052] The bottom of the web reinforcement 23 of a single group of steel trusses is fixed to the corresponding connection structure by vertical rigid clamping. The combination of the upper chord 21, the lower chord 22 and the connecting piece 24 of the steel trusses is placed in the middle of the two web reinforcements 23 and arranged in the air. The two web reinforcements 23 are rotated inward and overlapped on the outside of the corresponding lower chord 22. The upper chord 21 is lowered and inserted into the top of the web reinforcement 23 through the two blocking bodies 211 at the top to complete the fixation. Finally, the web reinforcement 23 is welded to the lower chord 22 and the upper chord 21, and the embedded parts 40 used in the single splicing area of ​​the floor deck are reserved.

[0053] Step 3: Support system installation

[0054] A support member 50 is vertically installed at the bottom of the area where the floor deck is to be installed. The top elevation of the support member 50 is adjusted and controlled to be at the same height. A fixing plate 51 is installed on the top of the support member 50. Three groups of support bodies 52 are arranged in a circular manner with equal intervals on the top of the fixing plate 51. Universal joints 54 are arranged at both ends of the support body 52. ​​The support body 52 is connected to the fixing plate 51 and the horizontal support plate 53 through the universal joints 54 at both ends. The three groups of support bodies 52 are all inclined upward and arranged near the middle of the horizontal support plate 53. The horizontal support plate 53 and the universal joints 54 at the corresponding ends are used to horizontally support the floor deck unit to be installed.

[0055] Step 4: Hoisting and assembling of floor decking units

[0056] Apply waterproof sealant on the side of the splicing area of ​​the two adjacent floor decking units, use a crane to vertically lift the floor decking units to the equipment height, and then complete the side extrusion sealing by horizontal transverse extrusion and vertical drop, and complete the vertical clamping and fixing of the connection structure on the embedded parts 40 reserved in step 2 and the web reinforcement 23 of the steel truss to be spliced, and place the assembly of the upper chord reinforcement 21, the lower chord reinforcement 22 and the connecting piece 24 of the steel truss to be spliced ​​in the middle of the two web reinforcements 23 and arrange them in the air, and rotate the two web reinforcements 23 inward to overlap the outer side of the corresponding lower chord reinforcement 22, and drop the upper chord reinforcement 21 through the two blocking bodies 211 at the top to complete the fixation by inserting the top of the web reinforcement 23 into each other, and finally weld the web reinforcement 23 to the lower chord reinforcement 22 and the upper chord reinforcement 21;

[0057] Step 5: Concrete pouring

[0058] Reinforcement steel bars are tied to the top of the assembled single steel truss of the floor deck, and then concrete is poured on it. After the concrete reaches the design strength, the support system is removed.

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An assembled non-disassembly steel truss floor deck, characterized in that: The invention comprises a bottom plate (10) made of concrete and a steel truss fixed to the bottom plate (10) by vertical rigid clamping, wherein a steel mesh (30) is embedded in the bottom plate (10), and a plurality of embedded parts (40) suitable for vertical rigid clamping and fixing the steel truss are connected in order on the steel mesh (30), an opening (41) is provided on the bottom side of the embedded part (40), and the opening (41) is suitable for the upper and lower fitting of the steel mesh (30), and an installation groove (42) is vertically opened on the embedded part (40), and the installation groove (42) is provided on the embedded part (40). ) is vertically provided with an internal threaded hole at the bottom thereof and is connected to a screw rod (43) through the internal threaded hole, the bottom of the screw rod (43) can enter the inside of the opening (41), and a pressing plate (44) that moves up and down is installed inside the opening (41), the top of the pressing plate (44) and the bottom of the screw rod (43) are suitable for rotationally matching and installing, and at the same time, the pressing plate (44) slides up and down inside the opening (41), and a connecting structure is provided at the top of the embedded part (40), and the connecting structure is suitable for being assembled with the steel bar truss up and down to complete the rigid clamping fixation; The steel truss comprises an upper chord (21), a lower chord (22) and a web (23), wherein the web (23) comprises two groups and the projections of the two groups in the length direction are symmetrically arranged, the ends of the upper chord (21) and the lower chord (22) are welded and fixed by connecting pieces (24), and the upper chord (21) is suitable for left and right limiting the tops of the two groups of web (23); The tops of the two groups of web reinforcements (23) are arranged in a socket-and-spigot manner, and the upper chord reinforcement (21) includes two symmetrically arranged stoppers (211) freely extending downward, and the two stoppers (211) are suitable for controlling the outward rotation angles of the tops of the two groups of web reinforcements (23) after the tops of the two groups of web reinforcements (23) cross.

2. The assembled non-disassembly steel bar truss floor deck according to claim 1 is characterized in that: A limit plate (45) is provided on the embedded part (40). The limit plate (45) is made of a steel plate / sheet discarded on site. The limit plate (45) is suitable for controlling the concrete thickness of the bottom plate (10).

3. The assembled non-disassembly steel bar truss floor deck according to claim 2 is characterized in that: The connection structure includes a connection port (46) arranged on the top of the embedded part (40), the connection port (46) is suitable for installing a steel truss, and two parallel connection plates (47) are arranged on one side of the top of the connection port (46) extending upward. A clamping plate (49) is movably installed on the two connection plates (47), and the clamping plate (49) and the connection plate (47) have relative sliding and rotation capabilities. A stopper (48) is installed on the side of the connection plate (47) facing away from the opening (41), and the stopper (48) is suitable for controlling the outward rotation angle of the clamping plate (49) to the horizontal to complete the rigid clamping fixation.

4. The assembled non-disassembly steel bar truss floor deck according to claim 3 is characterized in that: A guide groove (410) is provided on the clamping plate (49) in the extension direction, a slider (411) and a flat spring (412) suitable for flexibly installing the slider (411) are slidably installed inside the guide groove (410), the slider (411) and the connecting plate (47) are rotationally matched and a torsion spring is installed at the rotation node, a passive bearing body (413) is installed on the opposite side of the two connecting plates (47), and an arc-shaped pressure-applying body (414) is installed on the side of the clamping plate (49) opposite to the connecting plate (47), and the arc-shaped pressure-applying body (414) is suitable for resisting the passive bearing body (413) when the clamping plate (49) rotates toward the connecting port (46), and then compressing the flat spring (412) and moving outward relative to the passive bearing body (413), and the flat spring (412) and the torsion spring are suitable for forcing the clamping plate (49) to rotate outward after the corresponding steel bar on the steel truss completely enters the connecting port (46) and completes the rigid clamping fixation.

5. The assembled non-disassembly steel bar truss floor deck according to claim 1 is characterized in that: The connecting piece (24) comprises a T-shaped structural steel plate, the bottom ends of the connecting piece (24) are suitable for fixing two groups of lower chord bars (22), and the top end of the connecting piece (24) is suitable for fixing the upper chord bar (21).

6. The assembled non-disassembly steel bar truss floor deck according to claim 1, characterized in that: The web reinforcement (23) is adapted to be located on the outside of the lower chord reinforcement (22) on the same side and to be overlapped and fixed thereto, and the top thereof is abutted and fixed to the top of the inside of the blocking body (211) on the other side.

7. An assembly process for the assembled non-disassembly steel truss floor deck as claimed in claim 1, characterized in that: The steps for splicing two adjacent floor decking plates are as follows: Waterproof sealant is applied to the splicing area of ​​two adjacent bottom plates (10), the two bottom plates (10) are laterally extruded and spliced, and vertical rigid clamping and fixing are completed through the connection structure in the steel truss and the embedded parts (40) near the splicing area of ​​the two bottom plates (10).

8. A construction process for an assembled, non-disassembly-required steel truss floor deck as claimed in claim 4, characterized in that: The construction steps are as follows: Step 1: Prefabrication of the base plate (10) Place a concrete pad in the prefabricated mold at the position specified in the drawing design, install a steel mesh (30) on the pad, install the pressure plate (44), the screw (43), and the opening (41) on the steel bars on the steel mesh (30) in advance, wrap the connection structure with a concrete curing film, pour concrete and vibrate it until it just covers the limit plate (45), and demould after curing the concrete and reaching the designed strength; Step 2: Assembly of floor decking units The bottom of the web reinforcement (23) of the single group of steel trusses is fixed to the corresponding connection structure by vertical rigid clamping, the upper chord reinforcement (21), the lower chord reinforcement (22) and the connecting piece (24) of the steel trusses are placed in the middle of the two web reinforcements (23) and are suspended in the air, the two web reinforcements (23) are rotated inward and overlapped on the outside of the corresponding lower chord reinforcement (22), the upper chord reinforcement (21) is lowered through the two blocking bodies (211) at the top to complete the fixation by inserting the top of the web reinforcement (23), and finally the web reinforcement (23) is welded to the lower chord reinforcement (22) and the upper chord reinforcement (21), and the embedded parts (40) used in the floor decking unit splicing area are reserved; Step 3: Support system installation A support member (50) is vertically installed at the bottom of the area where the floor deck is to be installed, and the top elevation of the support member (50) is adjusted and controlled to be at the same height. A fixing plate (51) is installed on the top of the support member (50), and three groups of support bodies (52) are arranged at equal intervals in a ring on the top of the fixing plate (51). Universal joints (54) are arranged at both ends of the support body (52). The support body (52) is connected to the fixing plate (51) and the horizontal support plate (53) through the universal joints (54) at both ends. The three groups of support bodies (52) are all inclined upward and arranged close to the middle of the horizontal support plate (53). The horizontal support plate (53) and the universal joints (54) at the corresponding ends are used to horizontally support the floor deck monomer to be installed; Step 4: Hoisting and assembling of floor decking units Apply waterproof sealant to the side of the splicing area of ​​the adjacent two floor decking monomers, first vertically hoist the floor decking monomer to the equipment height by a crane, and then complete the side extrusion sealing by horizontal transverse extrusion and vertical drop, and complete the vertical clamping and fixing of the connection structure on the embedded part (40) reserved in step 2 and the web bar (23) of the steel truss to be spliced, and place the assembly of the upper chord bar (21), the lower chord bar (22) and the connecting piece (24) of the steel truss to be spliced ​​in the middle of the two web bars (23) and suspend them in the air, and rotate the two web bars (23) inward to overlap the outer side of the corresponding lower chord bar (22), and drop the upper chord bar (21) through the two blocking bodies (211) at the top to insert the top of the web bar (23) and complete the fixation, and finally weld the web bar (23) to the lower chord bar (22) and the upper chord bar (21); Step 5: Concrete pouring Reinforcement steel bars are tied to the top of the assembled single steel truss of the floor deck, and then concrete is poured on it. After the concrete reaches the design strength, the support system is removed.

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