Plant steel truss floor support plate and construction method thereof

Abstract

The invention relates to a plant steel truss floor support plate, and belongs to the field of building steel structures, the plant steel truss floor support plate comprises a first bottom plate and a second bottom plate, the first bottom plate is arranged on the second bottom plate, the size of the second bottom plate is larger than that of the first bottom plate, and a plurality of first vertical rib positioning grooves are formed in the second bottom plate; the first vertical rib positioning grooves are formed close to the side face of the first bottom plate, second vertical rib positioning grooves are formed in the two sides of the first bottom plate, the second vertical rib positioning grooves penetrate through the bottom and the top of the first bottom plate, the second vertical rib positioning grooves correspond to the first vertical rib positioning grooves in a one-to-one mode and are communicated with the first vertical rib positioning grooves, and the first vertical rib positioning grooves in the two sides of the second bottom plate correspond to each other in a one-to-one mode. The floor support plate has the advantages that the vertical steel bars can be accurately and rapidly positioned, the vertical steel bars are not prone to deviation in the welding process, meanwhile, splicing of the adjacent bottom plates is facilitated, the machining difficulty of the floor support plate is lowered, and the situation of slurry leakage in the concrete pouring process is reduced.

Description

Technical Field

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

[0002] Steel structures are widely used in the field of modern construction, especially in factory construction, and are favored for their stable structure, strong bearing capacity, and convenient construction. With the continuous expansion of the scale of industrial plants, the design and construction requirements of floor decks are becoming higher and higher. Floor decks not only need to have sufficient bearing capacity, but also good construction convenience and economy. In order to meet these needs, the design of existing steel structure factory floor decks has been continuously improved and perfected to meet the application needs of different occasions. At present, the floor deck of a steel structure factory is usually composed of a base plate and steel bars. The base plate is used to bear the floor load, and the steel bars are used to enhance the overall structural strength of the floor deck. In order to improve the bearing capacity and stability of the floor deck, the existing technology usually adopts the method of arranging vertical steel bars on the base plate. Common steel plate splicing methods mainly include welding, bolt connection, and slot connection. In addition, the fixing method of the steel bars needs to be considered during the laying of the floor deck to ensure its accurate position on the floor deck and avoid performance degradation due to construction errors. However, the existing steel structure factory floor decking has certain defects in practical application. Since the vertical steel bars are generally arranged on both sides of the bottom plate, it is difficult to accurately position the vertical steel bars in the early stage of processing the floor decking. Moreover, when welding the vertical steel bars, the vertical steel bars are prone to tilt, affecting the subsequent construction of the steel bars. In addition, the vertical steel bars are located on both sides of the bottom plate. When the two bottom plates are usually unable to be directly spliced ​​to each other, additional connecting plates need to be welded, and the connecting plates need to be grooved to bypass the vertical steel bars. This not only increases the construction difficulty, but also easily causes slurry to seep out from the gap between the vertical steel bars and the groove when pouring concrete. Summary of the invention

[0003] In order to achieve accurate and rapid positioning of the vertical steel bars, and prevent the vertical steel bars from being displaced during the welding process, facilitate the splicing of adjacent base plates, reduce the difficulty of processing floor decking, and reduce leakage during concrete pouring, the present application provides a factory steel truss floor deck.

[0004] The present application provides a factory steel truss floor decking adopting the following technical solution: A factory building steel truss floor deck, comprising a first bottom plate and a second bottom plate, wherein the first bottom plate is arranged on the second bottom plate, the size of the second bottom plate is larger than that of the first bottom plate, a plurality of first vertical rib positioning grooves are provided on the second bottom plate, the first vertical rib positioning grooves are arranged adjacent to the side of the first bottom plate, second vertical rib positioning grooves are provided on both sides of the first bottom plate, the second vertical rib positioning grooves penetrate to the bottom and top of the first bottom plate, the second vertical rib positioning grooves correspond to and are connected to the first vertical rib positioning grooves one by one, and the first vertical rib positioning grooves on both sides of the second bottom plate correspond to one by one; A vertical steel bar is inserted into each of the first vertical bar positioning grooves, and the vertical steel bar is also located in the corresponding second vertical bar positioning groove. The vertical steel bars on the two corresponding first vertical bar positioning grooves are commonly connected to the upper chord steel bar, and the vertical steel bars are connected to the lower chord transverse bars. Both ends of the two corresponding lower chord transverse bars are commonly connected to the lower chord longitudinal bars, and the upper chord steel bar and the lower chord longitudinal bars are commonly connected to the web bars.

[0005] By adopting the above technical solution, during construction, the first base plate is first installed on the second base plate, the vertical steel bar is passed through the second vertical steel bar positioning groove and inserted into the first vertical steel bar positioning groove, and the vertical steel bar is welded to the first base plate and the second base plate. The cooperation of the first vertical steel bar positioning groove and the second vertical steel bar positioning groove can quickly position the vertical steel bar, and during the welding process, the vertical steel bar is not easy to be displaced, which is convenient for processing. At the same time, the adjacent second base plates are directly spliced ​​to each other, and the splicing seams of the second base plates are directly welded to complete the connection of the adjacent floor decking plates. Compared with the existing floor decking plates, the welding parts and welding paths are reduced, which is conducive to reducing the leakage of slurry during the pouring of concrete.

[0006] Optionally, adjacent second bottom plates are spliced ​​with each other, adjacent first bottom plates and adjacent second bottom plates are spliced ​​together to form a mounting groove, adjacent second bottom plates are connected by welding, and a water-swellable water stop block is placed in the mounting groove.

[0007] By adopting the above technical solution, the adjacent second bottom plates are welded and then equipped with water-expanding water stop blocks, which further reduces the possibility of leakage during the concrete pouring process.

[0008] Optionally, a lower chord rod positioning block is provided on both sides of each of the first vertical reinforcement positioning grooves, and the lower chord rod positioning block is arranged on the top of the first bottom plate, and the lower chord rod positioning block on one side of the first bottom plate corresponds one-to-one to the lower chord rod positioning block on the other side, and a transverse reinforcement positioning groove and a longitudinal reinforcement positioning groove are provided on the lower chord rod positioning block, and the transverse reinforcement positioning groove is connected with the longitudinal reinforcement positioning groove, and the two ends of the lower chord transverse reinforcement are respectively located in the transverse reinforcement positioning grooves of two adjacent lower chord positioning blocks on the same side, and the lower chord transverse reinforcement is welded to the vertical steel bars between the two lower chord positioning blocks, and the two ends of the lower chord longitudinal reinforcement are respectively located in the longitudinal reinforcement positioning grooves of the corresponding two lower chord rod positioning blocks, and the lower chord longitudinal reinforcement is placed on the lower chord transverse reinforcement and connected by welding.

[0009] By adopting the above technical scheme, when installing the lower chord transverse reinforcement, first extend the two ends of the lower chord transverse reinforcement into the transverse reinforcement positioning grooves of the two lower chord rod positioning blocks on the same side, and weld the lower chord transverse reinforcement to the vertical reinforcement. Then, pass the lower chord longitudinal reinforcement through the longitudinal reinforcement positioning grooves of the two lower chord positioning blocks on both sides, and weld the lower chord longitudinal reinforcement on the lower chord transverse reinforcement. This can effectively position the lower chord transverse reinforcement and the lower chord longitudinal reinforcement, ensure the position accuracy of the reinforcement, and improve the stability of the overall structure. The welding connection between the lower chord transverse reinforcement and the vertical reinforcement enhances the integrity of the structure, thereby improving the bearing capacity and seismic performance of the steel truss floor deck of the factory building.

[0010] Optionally, a plurality of first web member positioning blocks and a plurality of second web member positioning blocks are provided on the first base plate, the first web member positioning blocks correspond to the second web member positioning blocks one by one, a web member positioning groove adapted to the bottom of the web reinforcement is formed between the first web member positioning blocks and the second web member positioning blocks, the bottom of the web reinforcement is located in the web member positioning groove, and the top of the web reinforcement is welded to the upper chord steel bar.

[0011] By adopting the above technical solution, the first web member positioning block and the second web member positioning block arranged on the first base plate can accurately position the web reinforcement, so that the web reinforcement is firmly installed in the web member positioning groove, thereby improving the accuracy and stability of the web reinforcement installation. At the same time, the welding of the top of the web reinforcement to the upper chord steel bar further enhances the rigidity and stability of the overall structure.

[0012] Optionally, a plurality of lifting grooves are formed on the second bottom plate, and a plurality of lifting holes are formed on the first bottom plate, the diameter of the lifting grooves is equal to the diameter of the lifting holes, a hanging seat is placed in the lifting groove, the hanging seat is connected to a hanging hook, and the hanging hook passes through the lifting hole.

[0013] By adopting the above technical solution, the cooperation of the lifting groove and the lifting hole makes it possible for the hanging seat to be tightly against the bottom of the first bottom plate during the lifting process of the floor decking, thereby preventing the hanging seat from falling off. Compared with the traditional method of directly connecting the lifting device with the upper chord steel bar, the safety of the floor decking during the lifting process is improved.

[0014] Optionally, a plurality of countersunk grooves are formed on the second bottom plate, a plurality of countersunk holes are formed on the first bottom plate, the countersunk grooves correspond to the countersunk holes one by one, the countersunk holes are penetrated by fixing bolts, and the fixing bolts are threadedly connected to the countersunk grooves.

[0015] By adopting the above technical solution, the countersunk grooves opened on the second bottom plate correspond one-to-one with the countersunk holes opened on the first bottom plate, and are connected by fixing bolts, thereby improving the stability and installation accuracy of the overall structure of the floor decking plate, and facilitating on-site assembly and disassembly.

[0016] Optionally, a connecting seat is installed at the bottom of the second base plate, and a spring is hinged to the connecting seat, and the other end of the spring is hinged to a column of the building.

[0017] By adopting the above technical solution, an elastic connection between the floor decking and the building columns is achieved, which effectively absorbs and alleviates the impact of external vibration or impact on the floor decking and improves the structural stability.

[0018] Optionally, a connecting seat is installed at the bottom of the second base plate and a column of the building, both ends of the spring are connected to a connecting block, the connecting seat is hinged with a connecting sleeve, and the connecting block is threadedly connected in the connecting sleeve.

[0019] By adopting the above technical solution, a flexible connection between the steel truss floor slab of the factory building and the building is achieved, which effectively improves the seismic resistance and stability of the floor slab under the action of external forces. In addition, the length of the connecting block extending into the connecting sleeve can be adjusted according to the design requirements, thereby adjusting the stretching length of the spring, and when the adjustment spring is aged, the connecting block can be directly removed from the connecting sleeve and replaced with a new spring.

[0020] The embodiment of the present application also provides a construction method of a factory steel truss floor deck, which is applied to the above-mentioned factory steel truss floor deck, and includes the following steps: S1. Processing and production of floor decking and transportation to the construction site; S2. The reinforcement of the structural beams and columns is tied, and the beam and column formwork and support system are installed; S3. Measure and lay out the floor deck before laying it. Measure and adjust the floor deck support elevation; S4. Laying floor decking; S5, cutting and adjustment of non-standard plates, reserved holes and openings; S6. Pre-buried and reserved mechanical and electrical engineering; S7, floor slab reinforcement binding; S8. Tie up the reserved steel bars at the opening and the negative reinforcement at the connection between the floor deck and the beam; S9. Concrete pouring and maintenance.

[0021] Optionally, step S1 includes the following steps: S11, the first bottom plate is installed on the second bottom plate, the vertical steel bar passes through the second vertical steel bar positioning groove and is inserted into the first vertical steel bar positioning groove, and the vertical steel bar is welded to the first bottom plate and the second bottom plate; S12, weld the lower chord transverse reinforcement to the vertical reinforcement; S13, weld the lower chord longitudinal reinforcement at both ends of the lower chord transverse reinforcement; S14. Weld the web reinforcement on the first bottom plate, and weld the web reinforcement to the lower chord longitudinal reinforcement and the upper chord steel bars.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. During construction, first install the first base plate on the second base plate, pass the vertical steel bar through the second vertical steel bar positioning groove and insert it into the first vertical steel bar positioning groove, weld the vertical steel bar to the first base plate and the second base plate, the cooperation of the first vertical steel bar positioning groove and the second vertical steel bar positioning groove can quickly position the vertical steel bar, and during the welding process, the vertical steel bar is not easy to be displaced, which is convenient for processing. At the same time, the adjacent second base plates are directly spliced ​​to each other, and the splicing seams of the second base plates are directly welded to complete the connection of the adjacent floor decking plates. Compared with the existing floor decking plates, the welding parts and welding paths are reduced, which is conducive to reducing the leakage of slurry during the pouring of concrete; 2. When installing the lower chord transverse reinforcement, first extend the two ends of the lower chord transverse reinforcement into the transverse reinforcement positioning grooves of the two lower chord positioning blocks on the same side, and weld the lower chord transverse reinforcement to the vertical reinforcement. Then, pass the lower chord longitudinal reinforcement through the longitudinal reinforcement positioning grooves of the two lower chord positioning blocks on both sides, and weld the lower chord longitudinal reinforcement on the lower chord transverse reinforcement. This can effectively position the lower chord transverse reinforcement and the lower chord longitudinal reinforcement, ensure the position accuracy of the reinforcement, and improve the stability of the overall structure. The welding connection between the lower chord transverse reinforcement and the vertical reinforcement enhances the integrity of the structure, thereby improving the bearing capacity and seismic performance of the steel truss floor deck of the factory building.

[0023] 3. The coordination of the lifting groove and the lifting hole enables the hanging seat to be tightly against the bottom of the first bottom plate during the lifting process of the floor deck, thus preventing the hanging seat from falling off. Compared with the traditional method of directly connecting the lifting device with the upper chord steel bar, the safety of the floor deck during the lifting process is improved.

[0024] 4. The flexible connection between the steel truss floor slab of the factory building and the building is realized, which effectively improves the seismic resistance and stability of the floor slab under the action of external forces. And the length of the connecting block extending into the connecting sleeve can be adjusted according to the design requirements, so as to adjust the stretching length of the spring, and when the adjustment spring is aged, the connecting block can be directly taken out of the connecting sleeve and replaced with a new spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the structure of the embodiment of the present application, which is used to reflect the spring, connecting sleeve, connecting block, sink groove and fixing bolt.

[0027] Figure 3 It is a structural schematic diagram used to reflect the lifting groove and the hanging seat in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. First base plate; 11. Countersunk hole; 12. Lifting hole; 13. Lifting hook; 14. Second vertical reinforcement positioning groove; 2. Second base plate; 21. Countersunk groove; 22. Lifting groove; 23. Hanging seat; 24. First vertical reinforcement positioning groove; 3. Fixing bolt; 41. Vertical reinforcement; 42. Lower chord transverse reinforcement; 43. Lower chord longitudinal reinforcement; 44. Upper chord reinforcement; 45. Web reinforcement; 5. Lower chord rod positioning block; 51. Transverse reinforcement positioning groove; 52. Longitudinal reinforcement positioning groove; 61. First web rod positioning block; 62. Second web rod positioning block; 63. Web rod positioning groove; 7. Connecting seat; 71. Connecting sleeve; 72. Connecting block; 73. Spring; 81. Installation groove; 82. Water-swelling water stop block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a steel truss floor deck of a factory building.

[0031] like Figure 1 and Figure 2 The steel truss floor deck of the factory building includes a first bottom plate 1 and a second bottom plate 2. The second bottom plate 2 is provided with a plurality of sink grooves 21. The first bottom plate 1 is provided with a plurality of sink holes 11. The sink grooves 21 correspond to the sink holes 11 one by one. The sink holes 11 are penetrated with fixing bolts 3. The fixing bolts 3 are threadedly connected with the sink grooves 21. The first bottom plate 1 and the second bottom plate 2 are both rectangular plates. The size of the first bottom plate 1 is smaller than that of the second bottom plate 2. The center point of the first bottom plate 1 and the center point of the second bottom plate 2 are located on the same vertical line; like Figure 3 The second bottom plate 2 is provided with a plurality of hoisting grooves 22, and the first bottom plate 1 is provided with a plurality of hoisting holes 12. The diameter of the hoisting grooves 22 is larger than that of the hoisting holes 12. A hanging seat 23 is placed in the hoisting groove 22. The hanging seat 23 is connected with a hanging hook 13. The hanging hook 13 passes through the hanging hole 12. like Figure 1Six first vertical rib positioning grooves 24 are provided on the second bottom plate 2, of which three first vertical rib positioning grooves 24 are located on one side of the first bottom plate 1, and the other three first vertical rib positioning grooves 24 are located on the other side of the first bottom plate 1. The first vertical rib positioning grooves 24 on one side of the first bottom plate 1 correspond to the first vertical rib positioning grooves 24 on the other side of the first bottom plate 1 one by one; Three second vertical rib positioning grooves 14 are respectively provided on the two side surfaces of the first bottom plate 1, and the second vertical rib positioning grooves 14 extend to the bottom and the top of the first bottom plate 1, and the second vertical rib positioning grooves 14 correspond to and communicate with the first vertical rib positioning grooves 24 one by one, and a vertical steel bar 41 is inserted into each first vertical rib positioning groove 24, and the vertical steel bar 41 is also located in the corresponding second vertical rib positioning groove 14, and the vertical steel bar 41 is welded to the first bottom plate 1 and the second bottom plate 2; Twelve lower chord positioning blocks 5 are welded to the top of the first base plate 1, and each two lower chord positioning blocks 5 form a group. The two lower chord positioning blocks 5 in each group are respectively arranged on both sides of a second vertical rib positioning groove 14, and the lower chord positioning blocks 5 are provided with a transverse rib positioning groove 51 and a longitudinal rib positioning groove 52. The opening directions of the transverse rib positioning grooves 51 of the two lower chord positioning blocks 5 in the same group are relatively arranged, and the opening directions of the longitudinal rib positioning grooves 52 of the two lower chord positioning blocks 5 in the same group are relatively arranged, and the longitudinal rib positioning groove 52 is located above the transverse rib positioning groove 51, and the longitudinal rib positioning groove 52 is connected with the transverse rib positioning groove 51.

[0032] The lower chord rod positioning blocks 5 on both sides of the first base plate 1 correspond to each other one by one, and a lower chord transverse rib 42 is commonly inserted into the transverse rib positioning grooves 51 of the two lower chord rod positioning blocks 5 in the same group, and lower chord longitudinal ribs 43 are commonly inserted into the longitudinal rib positioning grooves 52 of the corresponding lower chord rod positioning blocks 5 on both sides, and the lower chord longitudinal ribs 43 are placed on the lower chord transverse ribs 42 and connected by welding.

[0033] The vertical steel bars 41 on the two corresponding first vertical reinforcement locating grooves 24 are welded together with the upper chord steel bars 44, and a plurality of first web member locating blocks 61 and a plurality of second web member locating blocks 62 are arranged on the first base plate 1. The first web member locating blocks 61 correspond to the second web member locating blocks 62 one by one, and a web member locating groove 63 adapted to the bottom of the web reinforcement 45 is formed between the first web member locating blocks 61 and the second web member locating blocks 62. The web member locating groove 63 is located on the side of the lower chord longitudinal reinforcement 43 away from the upper chord steel bars 44, the bottom of the web reinforcement 45 is located in the web member locating groove 63, and the top of the web reinforcement 45 is welded to the upper chord steel bars 44.

[0034] The bottom of the second base plate 2 and the pillars of the building are both equipped with a connecting seat 7, the connecting seat 7 is hinged with a connecting sleeve 71, the connecting sleeve 71 is internally threadedly connected with a connecting block 72, and a spring 73 is commonly connected between the two connecting blocks 72; Adjacent second bottom plates 2 are spliced ​​with each other, and adjacent first bottom plates 1 and adjacent second bottom plates 2 are spliced ​​together to form a mounting groove 81 . Adjacent second bottom plates 2 are connected by welding, and a water-swellable water stop block 82 is placed in the mounting groove 81 .

[0035] During construction, the first bottom plate 1 and the second bottom plate 2 are first connected by bolts, the vertical steel bar 41 is passed through the second vertical steel bar positioning groove 14 and inserted into the first vertical steel bar positioning groove 24, and the vertical steel bar 41 is welded to the first bottom plate 1 and the second bottom plate 2. The first vertical steel bar positioning groove 24 and the second vertical steel bar positioning groove 14 cooperate to quickly position the vertical steel bar 41; Then, the lower chord transverse reinforcement 42 is inserted into the corresponding transverse reinforcement positioning groove 51, and the lower chord transverse reinforcement 42 is welded to the vertical reinforcement 41, and then the lower chord longitudinal reinforcement 43 is inserted into the corresponding longitudinal reinforcement positioning groove 52, and the lower chord longitudinal reinforcement 43 is welded to the lower chord transverse reinforcement 42; The bottom of the web reinforcement 45 is inserted into the web rod positioning groove 63, and the web reinforcement 45 is welded to the lower chord longitudinal reinforcement 43 and the upper chord reinforcement 44 to complete the processing of the floor deck.

[0036] After the floor deck is transferred to the site, the hoist is hooked with the hook 13, and then the floor deck is hoisted, the adjacent second bottom plates 2 are spliced ​​and welded, the water-swellable water stop strip is inserted into the installation groove 81, and then the connecting block 72 is connected to the connecting sleeve 71 to complete the installation of the floor deck.

[0037] The cooperation of the first vertical reinforcement positioning groove 24 and the second vertical reinforcement positioning groove 14 can quickly position the vertical reinforcement 41, and during the welding process, the vertical reinforcement 41 is not easy to be offset, which is convenient for processing. At the same time, the adjacent second bottom plates 2 are directly spliced ​​to each other, and the splicing seams of the second bottom plates 2 are directly welded to complete the connection of the adjacent floor decking plates. Compared with the existing floor decking plates, the welding parts and welding paths are reduced, which is conducive to reducing the leakage of slurry during the pouring of concrete; When installing the lower chord transverse reinforcement 42, firstly extend the two ends of the lower chord transverse reinforcement 42 into the transverse reinforcement positioning grooves 51 of the two lower chord rod positioning blocks 5 on the same side, and weld the lower chord transverse reinforcement 42 to the vertical reinforcement 41, and then pass the lower chord longitudinal reinforcement 43 through the longitudinal reinforcement positioning grooves 52 of the two lower chord rod positioning blocks 5 on both sides, and weld the lower chord longitudinal reinforcement 43 on the lower chord transverse reinforcement 42, which can effectively position the lower chord transverse reinforcement 42 and the lower chord longitudinal reinforcement 43, ensure the position accuracy of the reinforcement, and improve the stability of the overall structure; the welding connection between the lower chord transverse reinforcement 42 and the vertical reinforcement 41 enhances the integrity of the structure, thereby improving the bearing capacity and seismic performance of the steel truss floor deck of the factory building; The cooperation between the hoisting groove 22 and the hoisting hole 12 enables the hanging seat 23 to be tightly against the bottom of the first bottom plate 1 during the hoisting process of the floor deck, thereby preventing the hanging seat 23 from falling off. Compared with the traditional method of directly connecting the hanging device with the upper chord steel bar 44, the safety of the floor deck during the hoisting process is improved; The flexible connection between the steel truss floor slab of the factory building and the building is realized, and the seismic resistance and stability of the floor slab under the action of external forces are effectively improved. The length of the connecting block 72 extending into the connecting sleeve 71 can be adjusted according to the design requirements, thereby adjusting the stretching length of the spring 73, and when the adjusting spring 73 ages, the connecting block 72 can be directly taken out of the connecting sleeve 71 and replaced with a new spring 73.

[0038] The implementation principle of the embodiment of the present application is as follows: during construction, first install the first base plate 1 on the second base plate 2, pass the vertical reinforcement 41 through the second vertical reinforcement positioning groove 14 and insert it into the first vertical reinforcement positioning groove 24, and weld the vertical reinforcement 41 to the first base plate 1 and the second base plate 2. The cooperation of the first vertical reinforcement positioning groove 24 and the second vertical reinforcement positioning groove 14 can quickly position the vertical reinforcement 41, and during the welding process, the vertical reinforcement 41 is not easy to be displaced, which is convenient for processing. At the same time, the adjacent second base plates 2 are directly spliced ​​to each other, and the splicing seams of the second base plates 2 are directly welded to complete the connection of the adjacent floor decking plates. Compared with the existing floor decking plates, the welding parts and welding paths are reduced, which is conducive to reducing the leakage of slurry during the pouring of concrete.

[0039] The present application also provides a method for constructing a steel truss floor deck of a factory building. The method for constructing the steel truss floor deck of a factory building according to the present application includes the following steps: S1. Processing and production of floor decking and transportation to the construction site; S11, the first bottom plate 1 is installed on the second bottom plate 2, the vertical steel bar 41 passes through the second vertical steel bar positioning groove 14 and is inserted into the first vertical steel bar positioning groove 24, and the vertical steel bar 41 is welded to the first bottom plate 1 and the second bottom plate 2; S12, welding the lower chord transverse reinforcement 42 to the vertical reinforcement 41; S13, welding the lower chord longitudinal reinforcement 43 at both ends of the lower chord transverse reinforcement 42; S14, welding the web reinforcement 45 on the first bottom plate 1, and welding the web reinforcement 45 to the lower chord longitudinal reinforcement 43 and the upper chord reinforcement 44; S2. The reinforcement of the structural beams and columns is tied, and the beam and column formwork and support system are installed; S3. Measure and lay out the floor deck before laying it. Measure and adjust the floor deck support elevation; S4. Laying floor decking; S5, cutting and adjustment of non-standard plates, reserved holes and openings; S6. Pre-buried and reserved mechanical and electrical engineering; S7, floor slab reinforcement binding; S8. Tie up the reserved steel bars at the opening and the negative reinforcement at the connection between the floor deck and the beam; S9. Concrete pouring and maintenance.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel truss floor deck for a factory building, characterized by: The invention comprises a first bottom plate (1) and a second bottom plate (2), wherein the first bottom plate (1) is arranged on the second bottom plate (2), the size of the second bottom plate (2) is larger than the size of the first bottom plate (1), a plurality of first vertical rib positioning grooves (24) are provided on the second bottom plate (2), the first vertical rib positioning grooves (24) are arranged adjacent to the side surfaces of the first bottom plate (1), second vertical rib positioning grooves (14) are provided on both sides of the first bottom plate (1), the second vertical rib positioning grooves (14) pass through the bottom and the top of the first bottom plate (1), the second vertical rib positioning grooves (14) correspond to and are connected with the first vertical rib positioning grooves (24) one by one, and the first vertical rib positioning grooves (24) on both sides of the second bottom plate (2) correspond to each other one by one; A vertical steel bar (41) is inserted into each of the first vertical bar positioning grooves (24), and the vertical steel bar (41) is also located in the corresponding second vertical bar positioning groove (14). The vertical steel bars (41) on the two corresponding first vertical bar positioning grooves (24) are commonly connected to an upper chord steel bar (44), and the vertical steel bars (41) are connected to a lower chord transverse bar (42). Both ends of the two corresponding lower chord transverse bars (42) are commonly connected to a lower chord longitudinal bar (43), and the upper chord steel bar (44) and the lower chord longitudinal bar (43) are commonly connected to a web bar (45).

2. The factory building steel truss floor deck according to claim 1 is characterized by: Adjacent second bottom plates (2) are spliced ​​with each other, adjacent first bottom plates (1) and adjacent second bottom plates (2) are spliced ​​together to form a mounting groove (81), adjacent second bottom plates (2) are connected by welding, and a water-swellable water stop block (82) is placed in the mounting groove (81).

3. The factory building steel truss floor deck according to claim 1 is characterized by: A lower chord rod positioning block (5) is provided on both sides of each of the first vertical rib positioning grooves (24); the lower chord rod positioning block (5) is provided on the top of the first bottom plate (1); the lower chord rod positioning block (5) on one side of the first bottom plate (1) corresponds to the lower chord rod positioning block (5) on the other side; a transverse rib positioning groove (51) and a longitudinal rib positioning groove (52) are provided on the lower chord rod positioning block (5); the transverse rib positioning groove (51) is connected to the longitudinal rib positioning groove (52); The two ends of the chord transverse reinforcement (42) are respectively located in the transverse reinforcement positioning grooves (51) of the two adjacent lower chord rod positioning blocks (5) on the same side, and the lower chord transverse reinforcement (42) is welded to the vertical reinforcement (41) between the two lower chord rod positioning blocks (5), and the two ends of the lower chord longitudinal reinforcement (43) are respectively located in the longitudinal reinforcement positioning grooves (52) of the two corresponding lower chord rod positioning blocks (5), and the lower chord longitudinal reinforcement (43) is placed on the lower chord transverse reinforcement (42) and connected by welding.

4. The factory building steel truss floor deck according to claim 1, characterized in that: A plurality of first web member positioning blocks (61) and a plurality of second web member positioning blocks (62) are provided on the first bottom plate (1), the first web member positioning blocks (61) and the second web member positioning blocks (62) corresponding to each other one by one, a web member positioning groove (63) adapted to the bottom of the web reinforcement (45) is formed between the first web member positioning blocks (61) and the second web member positioning blocks (62), the bottom of the web reinforcement (45) is located in the web member positioning groove (63), and the top of the web reinforcement (45) is welded to the upper chord reinforcement (44).

5. The factory building steel truss floor deck according to claim 1, characterized in that: The second bottom plate (2) is provided with a plurality of hanging grooves (22), the first bottom plate (1) is provided with a plurality of hanging holes (12), the diameter of the hanging grooves (22) being equal to the diameter of the hanging holes (12), a hanging seat (23) being placed in the hanging grooves (22), the hanging seat (23) being connected with a hanging hook (13), and the hanging hook (13) passing through the hanging hole (12).

6. The factory building steel truss floor deck according to claim 5, characterized in that: The second bottom plate (2) is provided with a plurality of countersunk grooves (21), the first bottom plate (1) is provided with a plurality of countersunk holes (11), the countersunk grooves (21) correspond to the countersunk holes (11) one by one, the countersunk holes (11) are penetrated by fixing bolts (3), and the fixing bolts (3) are threadedly connected to the countersunk grooves (21).

7. The factory building steel truss floor deck according to claim 1, characterized in that: A connecting seat (7) is installed at the bottom of the second base plate (2), and a spring (73) is hinged to the connecting seat (7), and the other end of the spring (73) is hinged to a column of the building.

8. The factory building steel truss floor deck according to claim 7 is characterized by: The bottom of the second base plate (2) and the column of the building are both installed with a connecting seat (7), both ends of the spring (73) are connected with a connecting block (72), the connecting seat (7) is hinged with a connecting sleeve (71), and the connecting block (72) is threadedly connected in the connecting sleeve (71).

9. A construction method for a steel truss floor deck of a factory building, characterized by: The application of the factory building steel truss floor deck as described in any one of claims 1 to 8 comprises the following steps: S1. Processing and production of floor decking and transportation to the construction site; S2. The reinforcement of the structural beams and columns is tied, and the beam and column formwork and support system are installed; S3. Measure and lay out the floor decking before laying it, and measure and adjust the floor decking support elevation; S4. Laying floor decking; S5, cutting and adjustment of non-standard plates, reserved holes and openings; S6. Pre-buried and reserved mechanical and electrical engineering; S7, floor slab reinforcement binding; S8. Tie up the reserved steel bars at the opening and the negative reinforcement at the connection between the floor deck and the beam; S9. Concrete pouring and maintenance.

10. The construction method of the factory building steel truss floor deck according to claim 9, characterized in that: Step S1 includes the following steps: S11, the first bottom plate (1) is installed on the second bottom plate (2), the vertical steel bar (41) passes through the second vertical steel bar positioning groove (14) and is inserted into the first vertical steel bar positioning groove (24), and the vertical steel bar (41) is welded to the first bottom plate (1) and the second bottom plate (2); S12, welding the lower chord transverse reinforcement (42) to the vertical reinforcement (41); S13, welding the lower chord longitudinal reinforcement (43) at both ends of the lower chord transverse reinforcement (42); S14, welding web reinforcement (45) on the first bottom plate (1), and welding the web reinforcement (45) to the lower chord longitudinal reinforcement (43) and the upper chord reinforcement (44).

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