A semi-assembled floor formwork structure

Abstract

The application provides a kind of semi-assembled floor formwork structure, comprising a plurality of floor formworks sequentially spliced together by strip support plates respectively;The floor formwork and strip support plate are clamped by a plurality of clamping and jacking devices, and the splicing of the floor formwork and strip support plate is supported by a joint square tube assembly.The two spliced floor formworks and strip support plates are clamped and supported by the clamping and jacking device and the joint square tube assembly, so that the floor formwork and strip support plate can be spliced more tightly together, reducing the risk of slurry leakage.The clamping and jacking device jacks the joint square tube assembly at the splicing gap between the floor formwork and strip support plate, which can prevent the floor formwork and strip support plate from deforming and affecting the flatness after the completion of floor concrete pouring, avoiding problems such as joint dislocation.

Description

Technical Field

[0001] This invention relates to the field of building formwork technology, specifically to a semi-prefabricated floor formwork structure. Background Technology

[0002] Currently, in prefabricated floor formwork structures, the joints between two adjacent floor formwork panels are typically made of 50*10*2000 / 3000 / 4000 timber or 50*50 steel-clad timber as secondary joists. Then, iron nails are used to nail the two floor formwork panels together with the secondary joists to form an integral floor formwork structure, which facilitates the subsequent pouring process.

[0003] However, the aforementioned floor formwork structure makes it difficult to ensure the tightness between adjacent floor formwork panels, easily leading to grout leakage. Furthermore, after prolonged exposure to sun and rain, deformation of the floor formwork can severely weaken the holding power between nails and the timber / steel-clad timber / formwork, causing nails to protrude upwards. If the nailing is not thoroughly checked before pouring the beam and slab concrete, misalignment of the concrete joints can occur, and nail heads may become embedded in the concrete, requiring treatment after demolding. Additionally, the nails on the floor formwork can easily injure workers during dismantling, cleaning, and transportation, posing a significant safety hazard and severely slowing down material cleaning and transportation. Each time materials are reused, the old nails on the floor formwork must be removed before using new nails for the next construction phase, which increases both labor and material costs.

[0004] In addition, some prefabricated floor formwork structures use clamps to splice two floor formwork panels together, eliminating the need for nails. However, traditional clamping splicing methods simply clamp the floor formwork panels together without treating the joint gaps, still posing a significant risk of grout leakage. Summary of the Invention

[0005] To address the existing problems, this invention provides a semi-prefabricated floor formwork structure that can avoid grout leakage, reduce construction costs, and facilitate installation and disassembly.

[0006] This invention is achieved through the following technical solution: a semi-prefabricated floor formwork structure, comprising several floor formwork panels sequentially spliced ​​together by strip support plates; the floor formwork panels and the strip support plates are clamped together by several clamping and tightening devices, and the splice joint between the floor formwork panels and the strip support plates is supported by a joint square tube assembly; in addition, the clamping and tightening devices can also press the joint square tube assembly against the floor formwork panels and the strip support plates.

[0007] Furthermore, the joint square tube assembly includes a square tube body and a plurality of L-shaped profile assemblies; the panel of the square tube body is at least partially recessed inward to form a square tube U-shaped groove extending along its axial direction; the L-shaped profile assemblies are distributed along the splicing gap between the floor template and the strip support plate, and the L-shaped profile assemblies are inserted into the square tube U-shaped groove; the clamping and tightening device presses the square tube body upward.

[0008] The L-shaped profile assembly includes two L-shaped profiles respectively disposed on the lower surface of the splicing ends of the floor template and the strip support plate that are spliced ​​together.

[0009] The L-shaped profile includes an L-shaped plate and two fan-shaped plates respectively connected to both ends of the L-shaped plate.

[0010] The square tube U-shaped groove includes a horizontal part at the bottom and arc-shaped parts connected to both sides of the horizontal part; the arc-shaped surface of the fan-shaped plate is in close contact with the arc-shaped part of the square tube U-shaped groove.

[0011] The clamping and tightening device includes two clamping profiles respectively disposed on the lower surface of the splicing end of the floor template and the strip support plate that are spliced ​​together, and a clamp for clamping the two clamping profiles; the clamp can press the joint square tube assembly upward.

[0012] The clamp includes a clamping structure and a tightening structure connected to the clamping structure; the clamping structure has an adjustable clamping cavity, and the tightening end of the tightening structure extends into the clamping cavity; the clamping structure clamps two clamping profiles, and the tightening end of the tightening structure can move up and down to tighten the joint square tube assembly.

[0013] The clamping structure includes a stud that can move up and down on the clamping structure. The top end of the stud extends into the clamping cavity, and a clamping top plate is installed on the top end of the stud. The clamping top plate clamps the joint square tube assembly.

[0014] The clamping structure includes a clamping base plate, a fixed clamping plate disposed at one end of the clamping base plate, an adjusting component disposed at the other end of the clamping base plate, and a movable clamping plate disposed on the adjusting component; the clamping cavity is formed between the fixed clamping plate and the movable clamping plate, and the adjusting component can drive the movable clamping plate to move to adjust the size of the clamping cavity; the fixed clamping plate and the movable clamping plate respectively fasten the two clamping profiles.

[0015] The adjusting assembly includes a sleeve, a clamp mounting plate, and a clamp insert plate; the clamp mounting plate is disposed on the clamp base plate and a slot is formed between the clamp mounting plate and the clamp base plate; the movable clamp plate is disposed on the sleeve, and both the clamp mounting plate and the clamp base plate pass through the inner hole of the sleeve; the clamp insert plate is inserted into the slot, and the width of the clamp insert plate gradually increases from one end to the other end, so that the clamp insert plate can push the sleeve.

[0016] As another preferred embodiment, the adjustment assembly includes a clamping screw disposed on the clamping base plate, a locking nut disposed on the clamping screw, a connecting plate disposed at the bottom of the movable clamping plate, and a plurality of adjustment plates disposed on the connecting plate; the clamping base plate and the clamping screw pass through the adjustment plates, and the locking nut can push the adjustment plates.

[0017] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0018] (1) This invention uses a clamping and tightening device and a joint square tube assembly to clamp and support the two spliced ​​floor formwork and strip support plate, enabling the floor formwork and strip support plate to be spliced ​​more tightly together and reducing the risk of grout leakage. The clamping and tightening device presses the joint square tube assembly against the splicing gap between the floor formwork and the strip support plate, which can prevent the floor formwork and strip support plate from deforming and affecting the flatness of the floor concrete after pouring, avoiding problems such as misalignment of the joint. In addition, the joint square tube assembly pressing against the splicing gap between the floor formwork and the strip support plate can also seal the splicing gap between the floor formwork and the strip support plate, further preventing grout leakage.

[0019] (2) This invention does not require the use of a large number of iron nails as in traditional technology, thus reducing the labor and material costs of construction; at the same time, it also avoids the risk of workers being injured by iron nails and greatly improves the speed of material cleaning and transportation.

[0020] (3) The present invention provides a fan-shaped plate on the L-shaped profile that matches the arc-shaped part of the U-shaped groove of the square tube, so as to minimize the resistance to the installation and removal of the floor formwork and facilitate construction. Attached Figure Description

[0021] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0022] Figure 1 This is a structural diagram of the present invention.

[0023] Figure 2 for Figure 1Enlarged diagram of point A in the middle.

[0024] Figure 3 This is a structural diagram of the joint square tube assembly of the present invention.

[0025] Figure 4 This is a structural diagram of the L-shaped profile of the present invention.

[0026] Figure 5 This is a structural diagram of the square tube body of the present invention.

[0027] Figure 6 This is a side view of the square tube body of the present invention.

[0028] Figure 7 This is a structural diagram of the clamping and tightening device of the present invention.

[0029] Figure 8 This is a structural diagram of the clamping profile of the present invention.

[0030] Figure 9 This is a structural diagram of the fixture in Embodiment 1 of the present invention.

[0031] Figure 10 This is a structural diagram of the fixture in Embodiment 2 of the present invention.

[0032] The reference numerals in the above figures are as follows: 100—floor formwork, 101—strip support plate, 200—joint square tube assembly, 210—square tube body, 211—square tube U-groove, 212—horizontal section, 213—arc section, 220—L-profile assembly, 221—L-profile, 222—L-shaped plate, 223—fan-shaped plate, 300—clamping and tightening device, 310—clamping profile, 311—profile panel, 312—profile back plate, 313—profile buckle plate, 314 —Diagonal brace, 315—Slot, 320—Clamp, 321—Clamp base plate, 322—Fixed clamp, 323—Snap-on part, 324—Modible clamp, 325—Clamp top plate, 326—Clamp insert plate, 327—Clamp mounting plate, 328—Slot, 329—Sleeve, 330—Fixed nut, 331—Stud, 332—Handle, 333—Adjusting plate, 334—Clamp screw, 335—Locking nut, 336—Connecting plate, 337—Clamping cavity. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0034] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] Example 1

[0040] like Figure 1 , 2As shown, this embodiment discloses a semi-prefabricated floor formwork structure, which includes several floor formwork panels 100 that are sequentially spliced ​​together by strip support plates 101. During splicing, the floor formwork panels 100 and the strip support plates 101 are clamped together by several clamping and tightening devices 300. All the clamping and tightening devices 300 are distributed along the splicing gap between the floor formwork panels 100 and the strip support plates 101 to improve the clamping effect.

[0041] In addition, a joint square tube assembly 200 is provided on the lower surface of the splice between the floor formwork 100 and the strip support plate 101. The clamping and tightening device 300 can press the joint square tube assembly 200 against the splice between the floor formwork 100 and the strip support plate 101 to support the splice between the floor formwork 100 and the strip support plate 101, prevent the floor formwork 100 and the strip support plate 101 from deforming and affecting the flatness of the floor concrete after pouring, and avoid problems such as joint misalignment.

[0042] like Figure 3 As shown, the joint square tube assembly 200 includes a square tube body 210 and several L-shaped profile assemblies 220. Specifically, the square tube body 210 has a hollow structure and is made of high-strength steel, such as alloy steel with a yield strength of 1370MPa (140kgf / mm2) or higher and a tensile strength of 1620MPa (165kgf / mm2) or higher.

[0043] like Figure 5 , 6 As shown, at least a portion of the panel of the square tube body 210 is recessed inward to form a square tube U-shaped groove 211; that is, the panel of the square tube body 210 is provided with a square tube U-shaped groove 211 recessed toward the central axis of the square tube body 210. The square tube U-shaped groove 211 extends along the axial direction of the square tube body 210.

[0044] In addition, the square tube U-shaped groove 211 includes a horizontal portion 212 and arc-shaped portions 213 respectively connected to both sides of the horizontal portion 212. The horizontal portion 212 forms the bottom of the square tube U-shaped groove 211, and the two arc-shaped portions 213 form the groove walls of the square tube U-shaped groove 211.

[0045] Correspondingly, all L-shaped profile components 220 are distributed along the splicing gap between the floor formwork 100 and the strip support plate 101, and their number is determined by the size of the floor formwork 100. The upper end of the L-shaped profile component 220 is installed at the splicing point between the floor formwork 100 and the strip support plate 101, and the lower end is inserted into the square tube U-shaped groove 211.

[0046] Specifically, the L-shaped profile assembly 220 includes two L-shaped profiles 221. During installation, the two L-shaped profiles 221 are respectively installed with screws at the joint edges of the floor formwork 100 and the strip support plate 101, as shown below. Figure 2 As shown.

[0047] like Figure 4 As shown, the L-shaped profile 221 includes an L-shaped plate 222 and two fan-shaped plates 223 respectively connected to both ends of the L-shaped plate 222.

[0048] Specifically, the L-shaped plate 222 is composed of a vertical plate and a horizontal plate connected together, while the fan-shaped plate 223 connects the vertical plate and the horizontal plate respectively. The horizontal plate has screw holes. During installation, screws are passed through the bottom of the horizontal plate and screwed into the lower surfaces of the floor template 100 and the strip support plate 101, fixing the L-shaped plate 222 below the edge of the splicing end of the floor template 100 and the strip support plate 101. Then, the square tube body 210 is used to clamp the L-shaped profiles 221 on the spliced ​​floor template 100 and the strip support plate 101, so that the L-shaped profiles 221 on the floor template 100 and the strip support plate 101 are inserted into the square tube U-shaped groove 211 on the square tube body 210. At this time, the square tube body 210 is located below the splicing gap between the floor template 100 and the strip support plate 101, which can seal the splicing gap and prevent grout leakage. At the same time, when the L-shaped profile 221 is inserted into the U-shaped groove 211 of the square tube, the arc-shaped surface of the sector plate 223 is in close contact with the arc-shaped portion 213 of the U-shaped groove 211 of the square tube, such as Figure 2 As shown, the cooperation between the arc-shaped surface and the arc-shaped part 213 minimizes the resistance to the installation and removal of the floor formwork, making construction easier.

[0049] Meanwhile, the square tube U-shaped groove 211 can clamp the two L-shaped profiles 221 fixed on the spliced ​​floor template 100 and strip support plate 101 to limit and fix the floor template 100 and strip support plate 101, so that the floor template 100 and strip support plate 101 abut against each other, reduce the joint between the floor template 100 and strip support plate 101, and also prevent grout leakage.

[0050] The clamping and tightening device 300 serves to clamp the floor formwork 100 and the strip support plate 101, and also to push the square tube body 210 upwards. Figure 7 As shown, the clamping and tightening device 300 includes two clamping profiles 310 respectively disposed on the lower surfaces of the floor template 100 and the strip support plate 101 that are spliced ​​together, and a clamp 320 for clamping the two clamping profiles 310; the clamp 320 can press the square tube body 210 upward.

[0051] like Figure 9As shown, the fixture 320 includes a clamping structure and a pressing structure connected to the clamping structure. The clamping structure has a clamping cavity 337, the size of which can be adjusted. Through the clamping structure, the clamping profiles 310 on the floor formwork 100 and the strip support plate 101 can be clamped, so that the floor formwork 100 and the strip support plate 101 are closely attached to each other, which can also play a role in reducing the splicing gap between the floor formwork 100 and the strip support plate 101 and reducing the risk of mortar leakage.

[0052] The pressing end of the pressing structure extends into the clamping cavity 337, and the pressing structure can move up and down. Through the pressing structure, the square tube body 210 can be pressed tightly on the floor formwork 100 and the strip support plate 101, preventing the floor formwork 100 and the strip support plate 101 from deforming and warping upwards and the joints from producing uneven offsets.

[0053] The clamping structure includes a fixture bottom plate 321, a fixed clamping plate 322 arranged at one end of the fixture bottom plate 321, an adjusting component arranged at the other end of the fixture bottom plate 321, and a movable clamping plate 324 arranged on the adjusting component. A clamping cavity 337 is formed between the fixed clamping plate 322 and the movable clamping plate 324. The adjusting component can drive the movable clamping plate 324 to move to adjust the size of the clamping cavity 337. The fixed clamping plate 322 and the movable clamping plate 324 respectively fasten the two clamping profiles 310.

[0054] Specifically, the adjusting component includes a sleeve 329, a fixture mounting plate 327 and a fixture insertion plate 326. During installation, the fixture mounting plate 327 is welded to the fixture bottom plate 321. The shape of the fixture mounting plate 327 is "U-shaped", so a slot 328 is formed between the fixture mounting plate 327 and the fixture bottom plate 321.

[0055] The sleeve 329 is a hollow square sleeve, and the movable clamping plate 324 is arranged on the surface of the sleeve 329. During installation, both the fixture mounting plate 327 and the fixture bottom plate 321 pass through the inner hole of the sleeve 329, so that the sleeve 329 can move along the fixture bottom plate 321.

[0056] The fixture insertion plate 326 can be inserted into the slot 328, and the width of the fixture insertion plate 326 gradually increases from one end to the other end, so that the fixture insertion plate 326 has a wide end and a narrow end. During use, the narrow end of the fixture insertion plate 326 is inserted into the slot 328. As the fixture insertion plate 326 is continuously inserted, the fixture insertion plate 326 can push the sleeve 329 forward, making the movable clamping plate 324 approach the fixed clamping plate 322, thereby adjusting the size of the clamping cavity 337.

[0057] In addition, buckle portions 323 facing the clamping cavity 337 are arranged on both the fixed clamping plate 322 and the movable clamping plate 324, and the two buckle portions 323 respectively fasten one clamping profile 310.

[0058] Specifically, such as Figure 8 As shown, the clamping profile 310 includes a profile panel 311, a profile back plate 312, a profile buckle plate 313, and a diagonal brace plate 314. The profile panel 311 and the profile buckle plate 313 are horizontally arranged at the upper and lower ends of the profile back plate 312, respectively, and a buckle groove 315 is formed between the profile panel 311, the profile back plate 312, and the profile buckle plate 313, into which the buckle part 323 can be snapped. The diagonal brace plate 314 connects the profile panel 311, the profile back plate 312, and the profile buckle plate 313, respectively. The diagonal brace plate 314 can enhance the overall strength of the clamping profile 310 and make it easier to grasp during handling; multiple diagonal braces plate 314 can be provided.

[0059] The profile panel 311 is provided with screw holes, allowing the clamping profile 310 to be installed on the lower surface of the floor template 100 and the strip support plate 101 using screws. After the floor template 100 and the strip support plate 101 are assembled, the snap-fit ​​part 323 on the fixing clamp 322 is first fastened to the clamping profile 310 on the floor template 100. Then, the clamp insert plate 326 is inserted into the slot 328 to adjust the position of the movable clamp 324, so that the snap-fit ​​part 323 on the movable clamp 324 fastens the clamping profile 310 on the strip support plate 101. Through the clamping action of the clamping structure, the floor template 100 and the strip support plate 101 can be further tightened together.

[0060] In order to fix the clamping plate 326 after the clamping structure clamps the floor template 100 and the strip support plate 101, a row of insertion holes can be provided on the clamping plate 326 along its length direction, and a insertion hole is also provided on the clamping mounting plate 327. After the clamping plate 326 is inserted into place, a pin is inserted into the insertion hole on the clamping mounting plate 327 and the corresponding insertion hole on the clamping plate 326, so that the clamping plate 326 can be fixed.

[0061] In addition, a reinforcing plate is connected to the movable clamping plate 324 and the sleeve 329 to improve the clamping strength of the movable clamping plate 324.

[0062] like Figure 9 As shown, the clamping structure includes a fixing nut 330 welded to the fixture base plate 321, a stud 331 whose upper end passes through the fixing nut 330 and the fixture base plate 321 and extends into the clamping cavity 337, and a fixture top plate 325 installed on the top of the stud 331. The stud 331 and the fixing nut 330 are threaded together, so the stud 331 can be moved up and down when it is turned.

[0063] For easier operation, a handle 332 is provided at the lower end of the stud 331.

[0064] Of course, in another embodiment, the fixing nut 330 may not be provided, in which case the stud 331 can be directly threaded to the fixture base plate 321.

[0065] After the clamping structure clamps the floor formwork 100 and the strip support plate 101, turn the stud 331 upwards to make the top plate 325 of the clamp press against the square tube body 210. Figure 2 As shown. After all the floor formwork 100mm is assembled, the assembled semi-prefabricated floor formwork structure is supported by support poles.

[0066] The semi-prefabricated floor formwork structure in this embodiment clamps and supports the floor formwork 100 and the strip support plate 101 through clamping and tightening devices and joint square tube assemblies, allowing the floor formwork 100 and the strip support plate 101 to be spliced ​​together more tightly, reducing the risk of grout leakage. At the same time, it eliminates the need for the extensive use of nails as in traditional technologies, reducing labor and material costs during construction; it also avoids the risk of workers being injured by nails and greatly improves the speed of material cleaning and transportation.

[0067] Example 2

[0068] This embodiment is basically the same as Embodiment 1, except that the structure of the adjustment component of the clamp 320 is different. Figure 10 As shown, the adjustment assembly in this embodiment includes a clamping screw 334 disposed on the clamping base plate 321, a locking nut 335 disposed on the clamping screw 334, a connecting plate 336 disposed at the bottom of the movable clamping plate 324, and several adjusting plates 333 disposed on the connecting plate 336.

[0069] The clamping screw 334 extends from the end of the clamping base plate 321 and passes through all the adjusting plates 333, which can move along the clamping screw 334. Each adjusting plate 333 is provided with a through hole, and the clamping base plate 321 passes through at least one through hole on the adjusting plate 333. The clamping base plate 321 fixes the adjusting plate 333 so that it cannot rotate but can only move along the clamping screw 334.

[0070] When the locking nut 335 is tightened, the locking nut 335 can push the adjusting plate 333, causing the movable clamping plate 324 to move towards the fixed clamping plate 322, thereby clamping the clamping profile 310 installed on the floor template 100 and the strip support plate 101.

[0071] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0072] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this invention is defined by the claims and their equivalents.

Claims

1. A semi-prefabricated floor formwork structure, comprising a plurality of floor formwork panels (100) sequentially spliced ​​together by strip support plates (101); characterized in that, The floor template (100) and the strip support plate (101) are clamped together by a number of clamping and tightening devices (300), and the joint between the floor template (100) and the strip support plate (101) is supported by a joint square tube assembly (200); in addition, the clamping and tightening device (300) can also press the joint square tube assembly (200) against the floor template (100) and the strip support plate (101); The joint square tube assembly (200) includes a square tube body (210) and a plurality of L-shaped profile assemblies (220); the panel of the square tube body (210) is at least partially recessed inward to form a square tube U-shaped groove (211) extending along its axial direction; the L-shaped profile assemblies (220) are distributed along the splicing gap between the floor template (100) and the strip support plate (101), and the L-shaped profile assemblies (220) are inserted into the square tube U-shaped groove (211); the clamping and tightening device (300) presses the square tube body (210) upward. The L-shaped profile assembly (220) includes two L-shaped profiles (221) respectively disposed on the lower surfaces of the splicing ends of the floor template (100) and the strip support plate (101) that are spliced ​​together; the L-shaped profile (221) includes an L-shaped plate (222) and two fan-shaped plates (223) respectively connected to both ends of the L-shaped plate (222). The square tube U-shaped groove (211) includes a horizontal part (212) at the bottom and arc-shaped parts (213) respectively connected to both sides of the horizontal part (212); the arc-shaped surface of the fan-shaped plate (223) is in close contact with the arc-shaped part (213) of the square tube U-shaped groove (211). The clamping and tightening device (300) includes two clamping profiles (310) respectively disposed on the lower surfaces of the splicing ends of the spliced ​​floor template (100) and the strip support plate (101), and a clamp (320) for clamping the two clamping profiles (310); the clamp (320) can press the joint square tube assembly (200) upward. The clamp (320) includes a clamping structure and a tightening structure connected to the clamping structure; the clamping structure has an adjustable clamping cavity (337), and the tightening end of the tightening structure extends into the clamping cavity (337); the clamping structure clamps two clamping profiles (310), and the tightening end of the tightening structure can move up and down to tighten the joint square tube assembly (200).

2. The semi-prefabricated floor formwork structure according to claim 1, characterized in that, The clamping structure includes a stud (331) that can move up and down on the clamping structure. The top end of the stud (331) extends into the clamping cavity (337), and a clamping top plate (325) is installed on the top end of the stud (331). The clamping top plate (325) clamps the joint square tube assembly (200).

3. The semi-prefabricated floor formwork structure according to claim 2, characterized in that, The clamping structure includes a clamping base plate (321), a fixed clamping plate (322) disposed at one end of the clamping base plate (321), an adjusting component disposed at the other end of the clamping base plate (321), and a movable clamping plate (324) disposed on the adjusting component; the clamping cavity (337) is formed between the fixed clamping plate (322) and the movable clamping plate (324), and the adjusting component can drive the movable clamping plate (324) to move to adjust the size of the clamping cavity (337); the fixed clamping plate (322) and the movable clamping plate (324) respectively fasten the two clamping profiles (310).

4. The semi-prefabricated floor formwork structure according to claim 3, characterized in that, The adjustment assembly includes a sleeve (329), a clamp mounting plate (327), and a clamp insert plate (326); the clamp mounting plate (327) is disposed on the clamp base plate (321) and a slot (328) is formed between the clamp mounting plate (321) and the clamp base plate (321); the movable clamp plate (324) is disposed on the sleeve (329), and both the clamp mounting plate (327) and the clamp base plate (321) pass through the inner hole of the sleeve (329); the clamp insert plate (326) is inserted into the slot (328), and the width of the clamp insert plate (326) gradually increases from one end to the other end so that the clamp insert plate (326) can push the sleeve (329).

5. The semi-prefabricated floor formwork structure according to claim 3, characterized in that, The adjustment assembly includes a clamping screw (334) disposed on the clamping base plate (321), a locking nut (335) disposed on the clamping screw (334), a connecting plate (336) disposed at the bottom of the movable clamping plate (324), and a plurality of adjusting plates (333) disposed on the connecting plate (336); the clamping base plate (321) and the clamping screw (334) pass through the adjusting plates (333), and the locking nut (335) can push the adjusting plates (333).

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