Detachable steel bar truss floor support plate structure and construction technology

Abstract

The invention relates to a detachable steel bar truss floor support plate structure and a construction technology, and belongs to the technical field of steel beam floor slabs. The floor support plate structure comprises a steel bar truss, a detachable formwork, connecting pieces for connecting the steel bar truss and the detachable formwork and a supporting assembly for supporting the bottom of the detachable formwork, the connecting pieces are arranged in the length direction of the steel bar truss at intervals, and the connecting pieces comprise connecting fasteners and locking pieces; and the locking piece penetrates through the detachable template from the bottom and is fixedly connected with the connecting fastener. The floor support plate structure has the effects of reducing the use of a metal bottom die in an existing floor support plate structure and reducing the construction cost.

Description

Technical Field

[0001] The present application relates to the technical field of steel beam floor construction, and in particular to a detachable steel truss floor deck structure and construction process. Background Art

[0002] Steel truss floor deck is a composite floor system that combines prefabricated steel trusses with cast-in-place concrete. It has the advantages of quick construction, high bearing capacity and low cost. It is widely used in industrial plants, commercial buildings and public facilities.

[0003] Existing steel truss floor decks consist of steel trusses and a supporting base formwork for the trusses. The steel trusses are secured by electric spot welding of multiple sets of steel bars, including top and bottom chords and web members. The assembled steel trusses are then resistance spot welded to the supporting base formwork to form the steel truss floor deck.

[0004] Regarding the above-mentioned related technologies, since the steel truss and the supporting bottom formwork are fixed by spot welding, after the concrete is poured into the floor deck, they will form a whole that is difficult to separate. In addition, the supporting bottom formwork is made of metal material. In large-scale steel structure construction projects, a large number of steel truss floor decks are used, which has the problem of high cost. Summary of the Invention

[0005] In order to reduce the use of metal bottom formwork in existing floor deck structures and reduce construction costs, the present application provides a detachable steel truss floor deck structure and construction process.

[0006] The present application provides a detachable steel truss floor deck structure and construction process using the following technical solutions: A detachable steel truss floor deck structure includes a steel truss, a detachable formwork, a connector connecting the steel truss and the detachable formwork, and a support assembly supporting the bottom of the detachable formwork. The connectors are arranged at intervals along the length direction of the steel truss. The connectors include a connecting fastener and a locking member. The locking member passes through the detachable formwork from below and is fixedly connected to the connecting fastener.

[0007] By adopting the above technical solution, the steel truss is reliably connected to the detachable formwork. After the pouring of concrete and other processes on the floor deck are completed, the detachable formwork and supporting components can be removed, which solves the problem of high cost caused by the non-detachable bottom formwork of the traditional floor deck, and reduces the cost of using floor decks in large steel structure construction projects.

[0008] Optionally, the locking piece is a self-tapping screw, a reserved hole for the locking piece to pass through is provided on the detachable template, and a self-tapping punched hole corresponding to the reserved hole is provided on the bottom of the connecting fastener; The removable template is provided with a positioning structure for cooperating with the connecting fastener. The positioning structure includes a limiting slide rail that is detachably arranged on both sides of the reserved hole and for the connecting fastener to slide, and a positioning plunger component arranged on the side wall of the limiting slide rail. The outer side wall of the connecting fastener is provided with a locking hole that cooperates with the positioning plunger component to lock.

[0009] By adopting the above technical solution, the locking part adopts a self-tapping screw, which cooperates with the reserved holes on the detachable template and the self-tapping punched holes at the bottom of the connecting fastener, so that the connecting fastener and the detachable template can be fixed conveniently and quickly; the positioning structure provided on the detachable template utilizes a limiting slide rail to enable the connecting fastener to slide, and the positioning plunger cooperates with the locking hole on the outer wall of the connecting fastener to lock, thereby realizing precise positioning of the connecting fastener on the detachable template, which is convenient for the installation and connection of subsequent components.

[0010] Optionally, the steel bar truss includes an upper chord steel bar, a lower chord steel bar and a web steel bar, and the connecting fastener is provided with a limiting groove for the lower chord steel bar to be clamped into; The connecting fastener is provided with a limiting push block at the opening of the limiting groove for abutting the web steel bar, the connecting fastener is provided with a limiting slide groove for sliding installation of the limiting push block, and a first elastic member connected to the limiting push block is provided on the inner wall of the limiting slide groove, and the limiting push block is provided with a limiting inclined surface for abutting and pushing the lower chord steel bar.

[0011] By adopting the above technical solution, the limiting groove of the connecting fastener can be used for the lower chord steel bar to be inserted, which can realize the limitation of the lower chord steel bar of the steel truss, making the positioning of the steel truss more accurate; the limiting push block is set at the opening of the limiting groove and can slide in the limiting slide groove, and cooperates with the first elastic member. When the lower chord steel bar abuts the limiting inclined surface, the limiting push block can be pushed to slide, and then under the action of the first elastic member, the limiting push block abuts the web steel bar, further limiting and fixing the steel truss, thereby enhancing the stability of the connection between the steel truss and the connecting fastener.

[0012] Optionally, the connecting fastener is provided with a limiting opening corresponding to the self-drilling punching hole in the limiting slide groove, and a limiting through hole is provided on the limiting push block. When the lower chord steel bar is inserted into the limiting groove, the limiting through hole and the limiting opening correspond to each other, so that the end of the locking member passes through the limiting opening and is arranged in the limiting through hole.

[0013] By adopting the above technical solution, the detachable formwork and the connecting fastener are fixed by a locking piece. After the lower chord steel bar is inserted into the limiting groove, the limiting through hole and the limiting opening correspond to each other, and the end of the locking piece passes through the limiting opening and is arranged in the limiting through hole, thereby realizing a stable and reliable connection between the steel bar truss, the connecting fastener and the detachable formwork.

[0014] Optionally, the side wall of the steel beam close to the removable formwork is provided with an anti-leakage structure, and the anti-leakage structure includes a sealing cover plate, which covers the gap between the removable formwork and the steel beam, and the bottom of the sealing cover plate is provided with a first sealing surface, and the top of the removable formwork is provided with a second sealing surface that seals with the first sealing surface.

[0015] By adopting the above technical solution, an anti-leakage structure is set up, and a sealing cover plate is used to cover the gap between the removable formwork and the steel beam, and the first sealing surface at the bottom of the sealing cover plate is sealed with the second sealing surface at the top of the removable formwork, which can prevent concrete from leaking from the gap between the removable formwork and the steel beam, thereby improving the sealing of the floor deck structure.

[0016] Optionally, the anti-leakage structure also includes a metal bracket, the top of the metal bracket is lower than the top of the steel beam, one end of the metal bracket is fixed to the steel beam, and the other end abuts the side wall of the removable formwork, and the sealing cover plate covers the gap between the removable formwork and the metal bracket.

[0017] By adopting the above technical solution, one end of the metal bracket is fixed to the steel beam and the other end abuts the side wall of the removable formwork, and the sealing cover plate covers the gap between the removable formwork and the metal bracket. At this time, the anti-leakage structure can adapt to floor decking of different heights.

[0018] Optionally, the support assembly is provided with a clamping mechanism connected to the metal bracket, the clamping mechanism comprising a clamping shell, a first clamping assembly for lifting the bottom of the removable template upward, and a second clamping assembly for pressing the sealing cover plate downward; The first pressing assembly includes a first pressing driving block slidably mounted on the pressing housing, a pushing block for the first pressing driving block to abut, and a second elastic member sleeved on the first pressing driving block, wherein the pushing block corresponds to the bottom of the detachable template; The second pressing assembly includes a second pressing driving block slidably mounted on the pressing housing, a third elastic member sleeved on the second pressing driving block, and a pushing rod for the second pressing driving block to push.

[0019] By adopting the above technical solution, the setting of the pressing mechanism can simultaneously press the sealing cover plate and the detachable template, further improving the sealing effect of the detachable template on both sides.

[0020] Optionally, the push rod includes a vertical push rod vertically slidably installed on a metal bracket and a horizontal push rod arranged at the end of the vertical push rod. The metal bracket is provided with a vertical shell for the vertical push rod to slide in the middle, and a fourth elastic member for sleeved on the vertical push rod is provided in the vertical shell.

[0021] By adopting the above technical solution, the push rod includes a vertical push rod and a horizontal push rod, and the vertical push rod slides in the vertical shell of the metal bracket. A fourth elastic member is installed in the vertical shell, so that the push rod can flexibly move in the vertical direction when subjected to force. When the clamping mechanism is working, it can better push and clamp the sealing cover plate, further improving the sealing of the side wall of the removable template.

[0022] A construction process for a detachable steel truss floor deck structure comprises the following steps: S1, install the limit rails on the removable template, insert the connecting fasteners between adjacent limit rails, and achieve preliminary positioning of the connecting fasteners through the locking holes and positioning plungers; S2, inserting the pre-welded steel truss into the connecting fastener so that the lower chord steel bar is limited and arranged in the limit groove; S3, insert the locking piece from the bottom of the removable formwork to fix the connecting fastener and the removable formwork, and at the same time insert the end of the locking piece into the limiting through hole to lock the steel truss; S4, remove the limit rails, place the removable formwork in the corresponding floor bearing holes using hoisting equipment, weld the ends of the steel trusses to the steel beams, and support the bottom of the removable formwork using support components; S5, moving the first pressing driving block and the second pressing driving block to press the upper and lower sides of the sealing cover plate to ensure the sealing of the side wall of the removable template.

[0023] By adopting the above technical solution, the limiting slide rail is first installed and the connecting fastener is inserted for preliminary positioning to facilitate subsequent operations; the steel truss is inserted into the connecting fastener so that the lower chord steel bar is limited and arranged in the limiting groove, which is convenient for accurate installation of the steel truss; the locking piece is used to penetrate to fix the connecting fastener and the detachable formwork and lock the steel truss to enhance structural stability; after removing the limiting slide rail, the detachable formwork is hoisted and the end of the steel truss is fixed, and at the same time, the bottom of the detachable formwork is supported to complete the basic installation of the floor deck; the moving clamping drive block is pressed on the upper and lower sides of the sealing cover plate to ensure the sealing of the side wall of the detachable formwork and improve the overall waterproof and leak-proof performance.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up removable formwork and connectors, the removable formwork can be removed after pouring concrete on the steel truss floor deck, avoiding the high cost problem caused by the inability to remove the traditional metal support bottom formwork and reducing construction costs; 2. The setting of connecting fasteners and locking parts facilitates the installation and disassembly of steel trusses and removable formwork, making the operation more convenient; 3. The anti-leakage structure can effectively cover the gap between the removable formwork and the steel beams and metal supports to prevent leakage of concrete and ensure the construction quality of the floor deck. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a cross-sectional schematic diagram of the steel bar truss and connecting fasteners after being matched in an embodiment of the present application.

[0027] Figure 3 yes Figure 2 A local enlarged schematic diagram of point A in the middle.

[0028] Figure 4 It is a schematic diagram of the matching structure of the support assembly and the detachable template in an embodiment of the present application.

[0029] Figure 5 It is an exploded schematic diagram of the detachable template and sealing cover plate of the embodiment of the present application.

[0030] Figure 6 This is a structural schematic diagram of an embodiment of the present application in which a steel beam is provided with a metal bracket.

[0031] Figure 7 It is a cross-sectional schematic diagram of the clamping mechanism of the embodiment of the present application.

[0032] Figure 8 yes Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0033] Explanation of the reference numerals: 1. steel truss; 11. upper chord steel bar; 12. lower chord steel bar; 13. web bar steel bar; 2. removable formwork; 21. reserved hole; 22. limiting slide rail; 221. fastener slide groove; 222. positioning groove; 23. positioning plunger; 231. plunger housing; 232. plunger spring; 233. plunger ball head; 24. positioning protrusion; 3. connecting member; 31. connecting fastener; 311. self-tapping punching hole; 312. locking groove; 313. limiting groove; 3131. anti-slip groove; 314. limiting push block; 3141. limiting inclined surface; 3142. limiting through hole; 315. limiting slide groove; 3151. limiting opening; 316. first elastic member; 32. locking member; 4. support assembly; 41. support base; 42. support Lifting rod; 43. Support plate; 44. Inclined bracket; 5. Clamping mechanism; 51. Clamping shell; 511. Vertical slide; 512. Inclined slide; 513. Rotating buckle groove; 52. First clamping assembly; 521. First clamping drive block; 522. Pushing block; 5221. Pushing inclined plane; 523. Second elastic member; 53. Second clamping assembly; 531. Second clamping drive block; 532. Third elastic member; 533. Pushing rod; 5331. Vertical push rod; 5332. Horizontal push rod; 5333. Drive hole; 54. Locking ring; 55. Drive column; 551. Drive part; 6. Sealing cover plate; 61. Sealing groove; 62. Sealing strip; 7. Metal bracket; 71. Vertical shell; 711. Fourth elastic member; 8. Steel beam. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiments of the present application disclose a detachable steel bar truss floor deck structure and a construction process.

[0037] Reference Figure 1 A detachable steel truss floor deck structure includes a steel truss 1, a detachable formwork 2, a connector 3 for connecting the steel truss 1 and the detachable formwork 2, a support assembly 4 supporting the bottom of the detachable formwork 2, and a clamping mechanism 5 arranged on the support assembly 4.

[0038] Reference Figure 1 and Figure 2 The cross section of the steel truss 1 is triangular and includes an upper chord steel bar 11, a lower chord steel bar 12, and a web steel bar 13. The specific structure includes an upper chord steel bar 11 at the top and two lower chord steel bars 12 at the bottom. The upper chord steel bar 11 and the lower chord steel bar 12 are fixed together by welding through the web steel bars 13.

[0039] Connector 3 includes a fastener 31 and a locking member 32. Fastener 31 and steel truss 1 are fixed in place, and locking member 32 is used to connect the removable formwork 2 to fastener 31. After the concrete pouring of the floor deck is completed, locking member 32 and fastener 31 are released, allowing the removable formwork 2 and steel truss 1 to be removed and reused.

[0040] In this embodiment, the locking members 32 are self-tapping screws, and the removable template 2 is provided with a pre-set hole 21 for the locking members 32 to pass through. The bottom of the fastener 31 has self-tapping holes 311 corresponding to the pre-set holes 21. In this embodiment, the bottom of the fastener 31 has two sets of self-tapping holes 311, each located on the side away from the bottom chord reinforcement 12.

[0041] To ensure alignment between the pre-set holes 21 and the self-drilling punch holes 311 and facilitate the locking operation of the locking member 32, the removable template 2 is provided with a positioning structure for the fastener 31. The positioning structure includes limiting rails 22 located on either side of the pre-set holes 21 and positioning plungers 23 provided on the sidewalls of the limiting rails 22. A fastener slot 221 for the fastener 31 is formed between the two sets of parallel limiting rails 22.

[0042] The limiting rail 22 is detachably mated with the removable template 2. The bottom of the limiting rail 22 is provided with a plurality of positioning grooves 222 along its length. The removable template 2 is provided with positioning protrusions 24 for plugging into the positioning grooves 222. The plugging and mating of the positioning protrusions 24 and the positioning grooves 222 enables the limiting rail 22 to be fixed to the removable template 2.

[0043] The positioning plunger 23 is arranged on the inner side of the limiting slide rail 22. The positioning plunger 23 includes a plunger housing 231, a plunger spring 232, and a plunger ball head 233. The two ends of the plunger spring 232 are respectively fixed to the inner bottom wall of the plunger housing 231 and the plunger ball head 233. The opposite sides of the connecting fastener 31 are provided with locking grooves 312 that cooperate with the plunger ball head 233 to lock. The locking grooves 312 and the plunger ball head 233 are adapted. The positioning plunger 23 corresponds to the reserved hole 21, that is, the locking grooves 312 and the reserved hole 21 are located in the same vertical plane, so that when the connecting fastener 31 moves in the fastener slide 221, the construction personnel can judge whether the connecting fastener 31 has completed the initial positioning by hearing the sound of the locking grooves 312 and the plunger ball head 233 cooperating. At the same time, the initial positioning of the connecting fastener 31 also realizes the correspondence between the self-drilling punching 311 and the reserved hole 21. After the connection fastener 31 is positioned, the construction worker uses an electric or manual tool to push the locking piece 32 upward from the bottom of the detachable formwork 2 to fix the connection fastener 31 and the detachable formwork 2.

[0044] The connecting fasteners 31 are evenly spaced along the length of the limiting slide rails 22 and have a retaining groove 313 at their tops for inserting the lower chord rebar 12. To enhance the connection strength between the steel truss 1 and the connecting fasteners 31, the connecting fasteners 31 are equipped with retaining blocks 314 on either side of the retaining groove 313, which abut against the web rebar 13. The retaining blocks 314 slide horizontally on the connecting fasteners 31. An anti-slip groove 3131 is formed between the retaining blocks 314 and the retaining groove 313, reducing the probability of the steel truss 1 detaching from the connecting fasteners 31.

[0045] The connecting fastener 31 has a limiting slot 315 for slidingly positioning a limiting push block 314. A first elastic member 316, which is a compression spring, is disposed within the limiting slot 315 and connects to the limiting push block 314. The end of the limiting push block 314 also has a limiting inclined surface 3141 for abutting and pushing the lower chord steel bars 12. The limiting inclined surfaces 3141 gradually tilt inward from top to bottom. As the steel truss 1 is vertically inserted downward, the two sets of lower chord steel bars 12 respectively abut the two limiting push blocks 314. Under the action of the limiting inclined surfaces 3141, the limiting push blocks 314 retract into the limiting slot 315 until the lower chord steel bars 12 move into the anti-slip groove 3131. At this point, the limiting push block 314 automatically resets under the action of the first elastic member 316 and abuts the web steel bars 13.

[0046] The connecting fastener 31 is provided with a limiting opening 3151 on the bottom wall of the limiting slot 315, and the limiting opening 3151 corresponds to the self-tapping punching hole 311. The limiting push block 314 is provided with a limiting through hole 3142 corresponding to the limiting opening 3151. When the steel truss 1 is inserted into the limiting slot 313, the limiting through hole 3142 of the limiting push block 314 corresponds to the limiting opening 3151, so that the locking member 32 can pass through the limiting opening 3151 and be inserted into the limiting through hole 3142, thereby limiting the sliding of the limiting push block 314 and further improving the connection strength between the steel truss 1 and the connecting fastener 31.

[0047] Reference Figure 1 He Ru Figure 4 The support assembly 4 comprises a support base 41, a support lift rod 42 mounted on the support base 41, and a support plate 43 secured to the top of the support lift rod 42. The support lift rod 42 is a conventional telescopic rod structure, comprising two telescopically coupled support rods locked together by bolts. The support plate 43 abuts the bottom of the removable formwork 2, ensuring that the removable formwork 2 remains horizontal and stable during concrete pouring.

[0048] After the assembled steel truss 1 and removable formwork 2 are placed in the placement hole formed by the steel beam, the two ends of the steel truss 1 in the length direction are welded to the steel beam. The length direction of the steel truss 1 is defined as the length direction of the removable formwork 2.

[0049] Reference Figure 4 and Figure 5 In order to reduce leakage during concrete filling, the present application also includes an anti-leakage structure. The anti-leakage structure includes a sealing cover plate 6, which is a metal plate. One side of the sealing cover plate 6 and the steel beam sealing cover plate 6 cover the gap between one side of the removable formwork 2 and the steel beam in the length direction. A sealing structure is provided at the bottom of the sealing cover plate 6. The sealing structure includes a sealing groove 61 opened at the bottom of the sealing cover plate 6, and a sealing strip 62 arranged in the sealing groove 61. The width of the sealing groove 61 is greater than the sealing strip 62, and the bottom of the sealing strip 62 protrudes from the bottom surface of the sealing cover plate 6. Anti-leakage is achieved between two adjacent removable formworks 2 by plug-in cooperation.

[0050] Reference Figure 6 and Figure 7 In other embodiments, to achieve the height difference between adjacent floor decks, the anti-leakage structure further includes a metal bracket 7. The metal bracket 7 is lower than the steel beam and is formed of T-shaped steel, welded to the steel beam. The top of the removable formwork 2 fits snugly against the top of the metal bracket 7, and a sealing cover 6 covers the gap between the steel beam and one side of the removable formwork 2 along its length.

[0051] The support assembly 4 is provided with a pressing mechanism 5 for connecting to the metal bracket 7 . The pressing mechanism 5 includes a pressing shell 51 , a first pressing assembly 52 and a second pressing assembly 53 .

[0052] Below the support plate 43 is an inclined bracket 44 for tilting the pressing housing 51. The first pressing assembly 52 is used to lift the first pressing assembly 52 upward. The first pressing assembly 52 includes a first pressing drive block 521 that is slidably arranged on the pressing housing 51, a push block 522 that abuts the first pressing drive block 521, and a second elastic member 523 that is sleeved on the first pressing drive block 521. The pressing housing 51 has a vertical chute 511 for vertically arranging the push block 522, and an inclined chute 512 for tilting and sliding the first pressing drive block 521. The bottom of the push block 522 is provided with a push inclined surface 5221 for the first pressing drive block 521 to push. When the first pressing drive block 521 slides upward along the inclined chute 512, it can push the push block 522 to slide upward, thereby exerting a pressing effect on the edge bottom wall of the removable template 2.

[0053] The second pressing assembly 53 is used to press the sealing cover plate 6 downward, and includes a second pressing driving block 531 slidably arranged in the inclined sliding groove 512, a third elastic member 532 sleeved on the second pressing driving block 531, and a pushing rod 533 for the second pressing driving block 531 to push.

[0054] The push rod 533 is generally L-shaped and comprises a vertical push rod 5331 and a horizontal push rod 5332 disposed at the end of the vertical push rod 5331. The end of the horizontal push rod 5332 aligns with the sealing cover plate 6. A vertical housing 71 is mounted on the metal bracket 7, allowing the push rod 533 to slide vertically. A fourth elastic member 711 is sleeved within the vertical housing 71 to ensure a clearance between the push rod 533 and the sealing cover plate 6 under normal conditions.

[0055] The bottom of the vertical push rod 5331 extends to the bottom of the vertical housing 71. It is provided with drive holes 5333 extending through both side walls. The second compression drive block 531 is tilted and inserted into the drive hole 5333. As the second compression drive block 531 tilts downward, the push rod 533 as a whole moves downward, pressing the horizontal push rod 5332 against the sealing cover plate 6. The compression of the push block 522 and the horizontal push rod 5332 ensures a tight seal at the side edges of the removable formwork 2, reducing the likelihood of concrete leakage.

[0056] The second compression drive block 531 is also equipped with a locking ring 54 for locking. The locking ring passes through the compression housing and extends outside the compression housing. The outer wall of the compression housing 51 is provided with a rotational snap groove 513 for the locking ring 54 to rotate into. First, the lock ring 54 and the rotational snap groove 513 cooperate to lock the first and second compression drive blocks 531 to the compression housing 51, ensuring the compression stability of the push block 522 and the horizontal push rod 5332.

[0057] In order to simultaneously drive the synchronous movement of the first and second pressing drive blocks 531, the pressing housing 51 is further provided with a driving column 55 between the first and second pressing drive blocks 531. The driving body is threadedly engaged with the pressing housing 51. The driving body is provided with a driving portion 551 that drives the two drive blocks away from each other.

[0058] A construction process for a detachable steel truss floor deck structure includes the following steps: S1, install the limit rails on the removable template, insert the connecting fasteners between adjacent limit rails, and achieve preliminary positioning of the connecting fasteners through the locking holes and positioning plungers; S2, inserting the pre-welded steel truss into the connecting fastener so that the lower chord steel bar is limited and arranged in the limit groove; S3, insert the locking piece from the bottom of the removable formwork to fix the connecting fastener and the removable formwork, and at the same time insert the end of the locking piece into the limiting through hole to lock the steel truss; S4, remove the limit rails, place the removable formwork in the corresponding floor bearing holes using hoisting equipment, weld the ends of the steel trusses to the steel beams, and support the bottom of the removable formwork using support components; S5, moving the first pressing driving block and the second pressing driving block to press the upper and lower sides of the sealing cover plate to ensure the sealing of the side wall of the removable template.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A detachable steel truss floor deck structure, characterized in that: The invention comprises a steel bar truss (1), a detachable formwork (2), a connecting piece (3) connecting the steel bar truss (1) and the detachable formwork (2), and a support assembly (4) supporting the bottom of the detachable formwork (2), wherein the connecting pieces (3) are arranged at intervals along the length direction of the steel bar truss (1), and the connecting pieces (3) include a connecting fastener (31) and a locking piece (32), wherein the locking piece (32) passes through the detachable formwork (2) from below and is fixedly connected to the connecting fastener (31).

2. The detachable steel truss floor deck structure according to claim 1, characterized in that: The locking member (32) is a self-tapping screw, a reserved hole (21) for the locking member (32) to pass through is provided on the detachable template (2), and a self-tapping punched hole (311) corresponding to the reserved hole (21) is provided at the bottom of the connecting fastener (31); The detachable template (2) is provided with a positioning structure for cooperating with the connecting fastener (31), and the positioning structure includes a limiting slide rail (22) that is detachably arranged on both sides of the reserved hole (21) and for the connecting fastener (31) to slide, and a positioning plunger (23) arranged on the side wall of the limiting slide rail (22), and the outer side wall of the connecting fastener (31) is provided with a locking groove (312) that cooperates with the positioning plunger (23) to lock.

3. The detachable steel truss floor deck structure according to claim 2, characterized in that: The steel bar truss (1) comprises an upper chord steel bar (11), a lower chord steel bar (12) and a web steel bar (13); the connecting fastener (31) is provided with a limiting groove (313) for the lower chord steel bar (12) to be clamped; The connecting fastener (31) is provided with a limiting push block (314) at the opening of the limiting groove (313) for abutting against the web reinforcement (13), the connecting fastener (31) is provided with a limiting slide groove (315) for sliding installation of the limiting push block (314), and a first elastic member (316) connected to the limiting push block (314) is provided on the inner wall of the limiting slide groove (315), and a limiting inclined surface (3141) for abutting and pushing the lower chord reinforcement (12) is provided on the limiting push block (314).

4. The detachable steel truss floor deck structure according to claim 3, characterized in that: The connecting fastener (31) is provided with a limiting opening (3151) corresponding to the self-tapping punching hole (311) in the limiting sliding groove (315), and a limiting through hole (3142) is provided on the limiting push block (314). When the lower chord steel bar (12) is inserted into the limiting groove (313), the limiting through hole (3142) corresponds to the limiting opening (3151), so that the end of the locking member (32) passes through the limiting opening (3151) and is arranged in the limiting through hole (3142).

5. The detachable steel truss floor deck structure according to claim 1, characterized in that: The steel beam (8) is provided with an anti-leakage structure on the side wall close to the removable formwork (2), and the anti-leakage structure includes a sealing cover plate (6), and the sealing cover plate (6) covers the gap between the removable formwork (2) and the steel beam (8). A sealing structure is provided at the bottom of the sealing cover plate (6), and the sealing structure includes a sealing groove (61) opened at the bottom of the sealing cover plate (6) and a sealing strip (62) arranged in the sealing groove (61), and the width of the sealing groove (61) is greater than the width of the sealing strip (62).

6. The detachable steel bar truss floor deck structure according to claim 5, characterized in that: The anti-leakage structure further comprises a metal bracket (7), the top of the metal bracket (7) being lower than the top of the steel beam, one end of the metal bracket (7) being fixed to the steel beam (8), and the other end being in contact with the side wall of the removable formwork (2), and the sealing cover plate (6) covering the gap between the removable formwork (2) and the metal bracket (7).

7. The detachable steel truss floor deck structure according to claim 1, characterized in that: The support assembly (4) is provided with a pressing mechanism (5) connected to the metal bracket (7), and the pressing mechanism (5) includes a pressing shell (51), a first pressing assembly (52) for lifting the bottom of the removable template (2) upward, and a second pressing assembly (53) for pressing the sealing cover plate (6) downward; The first clamping assembly (52) includes a first clamping drive block (521) slidably mounted on the clamping housing (51), a push block (522) for the first clamping drive block (521) to abut against, and a second elastic member (523) sleeved on the first clamping drive block (521), wherein the push block corresponds to the bottom of the detachable template (2); The second pressing assembly (53) comprises a second pressing drive block (531) slidably mounted on the pressing housing (51), a third elastic member (532) sleeved on the second pressing drive block (531), and a pushing rod (533) for the second pressing drive block (531) to push.

8. The detachable steel bar truss floor deck structure according to claim 7, characterized in that: The push rod (533) comprises a vertical push rod (5331) mounted on a metal bracket (7) for vertical sliding movement, and a horizontal push rod (5332) arranged at the end of the vertical push rod (5331). A vertical shell (71) for the vertical push rod (5331) to slide in the middle is provided on the metal bracket (7), and a fourth elastic member (711) for sleeve-mounting the vertical push rod (5331) is provided in the vertical shell (71).

9. A construction process for a detachable steel truss floor deck structure, characterized in that: The detachable steel truss floor deck structure according to any one of claims 1 to 8 comprises the following steps: S1, install the limit rails on the removable template, insert the connecting fasteners between adjacent limit rails, and achieve preliminary positioning of the connecting fasteners through the locking holes and positioning plungers; S2, inserting the pre-welded steel truss into the connecting fastener so that the lower chord steel bar is limited and arranged in the limit groove; S3, insert the locking piece from the bottom of the removable formwork to fix the connecting fastener and the removable formwork, and at the same time insert the end of the locking piece into the limiting through hole to lock the steel truss; S4, remove the limit rails, place the removable formwork in the corresponding floor bearing holes using hoisting equipment, weld the ends of the steel trusses to the steel beams, and support the bottom of the removable formwork using support components; S5, moving the first pressing driving block and the second pressing driving block to press the upper and lower sides of the sealing cover plate to ensure the sealing of the side wall of the removable template.

Images