An adhesive connector and a non-dismantling bottom formwork steel bar truss floor slab

Abstract

An embodiment of the present invention provides an adhesive connecting member and a steel bar truss floor formwork with a non-removable bottom formwork. Among them, the adhesive connecting member includes: a connecting portion; a supporting portion; and an adhesive portion, and the adhesive portion is disposed between the connecting portion and the supporting portion. The technical solution provided by the embodiment of the present invention is that the connecting member is used in cooperation with a bottom formwork made of a cement substrate. When the connecting member is connected to the bottom formwork, the adhesive portion on the connecting member is connected to the upper surface of the first surface of the bottom formwork, and the bonding force between the adhesive portion and the cement-based material is utilized to bear the load during the floor construction stage, avoiding the disadvantages of weakening the local mechanical properties of the bottom formwork due to being embedded inside the bottom formwork and causing stress concentration, resulting in premature failure of the bottom formwork.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of construction technology, and in particular, to an adhesive connector and a non-removable bottom formwork steel bar truss floor slab. Background Art

[0002] With the popularization of prefabricated buildings in the construction industry, steel bar truss floor slabs have been widely used in various types of buildings. The steel bar truss floor slab speeds up the construction progress, enhances the support effect at the same time, reduces the support structure, and enables rapid installation.

[0003] Traditional non-removable bottom formwork steel bar truss floor slabs basically fall into two types: one is to combine the steel bar truss and the cement-based formwork through locking connectors. There is a large amount of assembly work in the factory for such products, and a large number of metal fasteners are exposed at the bottom of the cement-based board. There is a risk that the exposed metal will rust after long-term use, thus affecting the effect of the decorative surface layer; the other is to embed the steel bar truss in the cement-based board, or embed the connector in the board, and this embedding method will have a negative impact on the mechanical properties of the cement-based board, such as local stress concentration at the embedding location, reducing the load-bearing performance of the cement-based board. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide an adhesive connector and a non-removable bottom formwork steel bar truss floor slab that solve the above problems.

[0005] Embodiments of the present invention provide an adhesive connector, including:

[0006] A connecting part;

[0007] A supporting part;

[0008] An adhesive part, which is arranged between the connecting part and the supporting part.

[0009] Optionally, the connector includes two main plates, a supporting hook and a flanging plate;

[0010] The two main plates are bent to form the connecting part, and the intersection of the two main plates extends along a first vertical direction;

[0011] A supporting hook is respectively arranged at one end of each main plate away from the intersection, and the supporting hook extends along a second vertical direction to form the supporting part, and the first direction is opposite to the second direction;

[0012] A flanging plate is arranged at one end of each main plate away from the intersection, and the flanging plate extends horizontally to form the adhesive part.

[0013] Optionally, there is a first included angle between the two main plates, and the range of the first included angle is greater than or equal to 0 degrees;

[0014] There is a second included angle between the supporting hooks located on different main plates, and the range of the second included angle is greater than or equal to 0 degrees.

[0015] Optionally, slurry leakage holes are provided on the main plates, and slurry overflow holes are provided on the flanging plates.

[0016] Optionally, a plurality of reinforcing flanges are provided at one end of the two main plates where they intersect;

[0017] The reinforcing flanges extend along the second vertical direction; and / or,

[0018] The reinforcing flanges extend along the first vertical direction; and / or

[0019] The reinforcing flanges extend horizontally.

[0020] Optionally, there are a plurality of the supporting hooks and the flanging plates, and the supporting hooks and the flanging plates are arranged at intervals along the length direction of the main plates.

[0021] Correspondingly, an embodiment of the present invention further provides an adhesive type formwork-free steel bar truss floor slab, including:

[0022] A bottom formwork, which is made of a cement substrate, and the bottom formwork has a first surface and a second surface arranged opposite to each other;

[0023] A connecting member, which includes a connecting portion, a supporting portion and an adhesive portion; the adhesive portion is arranged between the connecting portion and the supporting portion; the connecting portion protrudes from the first surface, the supporting portion is located inside the bottom formwork, and the adhesive portion is adhered to the surface of the first surface;

[0024] A steel bar truss, which includes an upper chord steel bar, two lower chord steel bars located on both sides below the upper chord steel bar, and web steel bars fixedly connected to the upper chord steel bar and the lower chord steel bars respectively; the steel bar truss is fixedly connected to the connecting portion of the connecting member through one of the lower chord steel bars and the web steel bars.

[0025] Optionally, the connecting member extends along the width direction of the bottom formwork and is connected to at least one lower chord steel bar on the steel bar truss.

[0026] Optionally, the connecting member extends along the length direction of the bottom formwork;

[0027] The connecting member is connected to the web steel bars on one side of the steel bar truss.

[0028] Optionally, a horizontal bending angle is provided on the web bar, and the web bar is connected to the connecting member through the horizontal bending angle.

[0029] In addition, optionally, a fixing plate is further included. The fixing plate is fixedly connected to the first surface and spans the splicing seam between two adjacent bottom forms and is connected to the adjacent bottom forms.

[0030] The technical solution provided by the embodiment of the present invention uses an adhesive connecting member to cooperate with a bottom form made of a cement substrate. When manufacturing the bottom form, before the bottom form solidifies, the connection between the connecting member and the bottom form can be completed, avoiding a large number of locking operations between the connecting member and the bottom form compared with existing products on the market. At the same time, when the connecting member is connected to the bottom form, the bonding part on the connecting member is connected to the upper surface of the first surface of the bottom form, and the bonding force between the bonding part and the cement-based material is used to bear the load during the floor slab construction stage, avoiding the stress concentration problem caused by being embedded inside the bottom form compared with existing products on the market, avoiding having a negative impact on the mechanical properties of the bottom form, ensuring the mechanical properties of the bottom form, and guaranteeing the structural strength of the bottom form. At the same time, the small hook of the supporting part of the connecting member is anchored in the slab, providing vertical positioning and support for the cement substrate body while also providing an anchoring force to bear the load during the floor slab construction stage, thus providing sufficient safety guarantee for the load-bearing during the floor slab construction stage. The negative impact of this small hook on the mechanical properties of the bottom form can be ignored. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic side view structure diagram of a connecting member in an embodiment of the present invention;

[0033] Figure 2 It is a schematic side view structure diagram of a connecting member from another angle in an embodiment of the present invention;

[0034] Figure 3 It is a schematic top view structure diagram of a connecting member in an embodiment of the present invention;

[0035] Figure 4 It is a schematic side sectional view structure diagram of a non-removable bottom form steel bar truss floor slab in an embodiment of the present invention;

[0036] Figure 5Schematic diagram of a partially enlarged side view cross-section structure of a non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0037] Figure 6 Schematic diagram of a side view structure of another connecting piece in an embodiment of the present invention;

[0038] Figure 7 Schematic diagram of a side view structure of another connecting piece from another angle in an embodiment of the present invention;

[0039] Figure 8 Schematic diagram of a top view structure of another connecting piece in an embodiment of the present invention;

[0040] Figure 9 Schematic diagram of a partially enlarged side view cross-section structure of another non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0041] Figure 10 Schematic diagram of a side view structure of yet another connecting piece in an embodiment of the present invention;

[0042] Figure 11 Schematic diagram of a partially enlarged side view cross-section structure of yet another non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0043] Figure 12 Schematic diagram of a top view structure of yet another connecting piece in an embodiment of the present invention;

[0044] Figure 13 Schematic diagram of a side view structure of yet another connecting piece in an embodiment of the present invention;

[0045] Figure 14 Schematic diagram of a side view cross-section structure of yet another non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0046] Figure 15 Schematic diagram of a side view cross-section structure of still another non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0047] Figure 16 Schematic diagram of a partially enlarged side view cross-section structure of still another non-disassembled bottom formwork steel bar truss floor slab in an embodiment of the present invention;

[0048] Figure 17 Schematic diagram of the state where a fixing plate is connected to the bottom formwork in an embodiment of the present invention. Detailed implementation manners

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the embodiments of the present invention.

[0050] It should be noted that in the description of the present invention, the terms "first" and "second" are only used for the convenience of describing different components or names, and cannot be understood as indicating or implying a sequential relationship, relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0052] Figure 1 It is a schematic side view structure diagram of a connector in an embodiment of the present invention. Figure 2 It is a schematic side view structure diagram of a connector from another angle in an embodiment of the present invention. Figure 3 It is a schematic top view structure diagram of a connector in an embodiment of the present invention, as Figures 1 to 3 shown.

[0053] The embodiment of the present invention provides an adhesive connector 10, and the connector 10 is made of a metal material.

[0054] Among them, the connector 10 includes: a connecting portion 11, a supporting portion 12 and an adhesive portion 13. The adhesive portion 13 is disposed between the connecting portion 11 and the supporting portion 12.

[0055] Combined with Figures 1 to 3 See Figure 4 And Figure 5, during use, the adhesive connector 10 is used in cooperation with the bottom form 40 made of a cement substrate. The connector 10 is connected to the bottom form 40 through the support portion 12 and the adhesive portion 13, and the connecting portion 11 of the connector 10 is used to connect with the steel bar truss 50. When manufacturing the bottom form 40, before the bottom form 40 solidifies, the connection between the connector 10 and the bottom form 40 can be completed, avoiding a large number of locking operations between the conventional connector 10 and the floor deck. When the connector 10 is connected to the bottom form 40, the adhesive portion 13 on the connector 10 is connected to the upper surface of the first side of the bottom form 40, and the bonding force between the adhesive portion 13 and the cement-based material is used to bear the load during the floor slab construction stage, avoiding the problem that the components such as embedded connectors or steel bars inside the bottom form 40 cause local stress concentration in the bottom form 40, thereby avoiding having a negative impact on the mechanical properties of the bottom form 40 and ensuring the structural strength of the bottom form 40.

[0056] The support portion 12 of the connector 10 plays a positioning role for the connector 10. The size of the support portion 12 is very small compared to the overall size of the bottom form 40, and the negative impact of the support portion 12 on the mechanical properties of the cement substrate is relatively small and can be ignored. Moreover, the support portion 12 can also provide a certain anchoring force for the connector 10, making the connection between the connector 10 and the bottom form 40 more secure.

[0057] The connecting portion 11 on the connector 10 protrudes from the first side and is used to connect with the steel bar truss 50, and the fixation between the steel bar truss 50 and the bottom form 40 is achieved through the connector 10. The connector 10 includes but is not limited to being made of metal materials. The connection between the steel bar truss 50 and the connector 10 includes but is not limited to being welded and fixed. The steel bar truss 50 and the connector 10 adopt a welded connection method, making the bottom form 40, the steel bar truss 50, and the connector 10 form a whole, increasing the stiffness of the floor deck applying the connector 10 during the construction stage. During the construction stage of the floor slab, there will be no relative slip between the steel bar truss 50 and the bottom form 40, and they will jointly bear force and deformation, thereby reducing the deformation of the bottom form 40 during the construction stage and making the floor deck have a better flatness effect on the bottom of the floor.

[0058] Furthermore, the bottom form 40 is made of a cement substrate. After pouring concrete on the bottom form 40, there is no need to perform the operation of removing the bottom form, reducing the form removal construction of the bottom form 40. It can form a whole with the poured floor slab, having good integrity. Compared with the floor deck with a removable bottom form, it has the advantages of convenient and efficient construction. The bottom form 40 does not need to return to the factory, avoiding processes such as cleaning, quality inspection, and secondary processing of the bottom form, and greatly improving the production efficiency.

[0059] The technical solutions provided by the embodiments of the present invention will be further introduced in detail below.

[0060] In the embodiments of the present invention, the connecting member 10 is made of metal materials including but not limited to stainless steel plates, galvanized plates, galvanized alloy plates, etc. For example, the plate-shaped connecting member 10 is formed by processes including but not limited to cutting, stamping, bending, etc. The thickness range of the plate-shaped connecting member 10 includes but not limited to 0.6 - 1.2 mm, and the width range of the supporting portion 12 includes but not limited to 2 - 4 mm, so as to reduce the negative impact of the supporting portion 12 on the cement substrate.

[0061] In the embodiments of the present invention, the bottom mold 40 is made of cement-based materials including but not limited to ultra-high-strength cement-based materials or high-ductility waterproof and crack-resistant composite cement-based materials. The bottom mold 40 also includes one of a concrete slab, a fiber cement board, and a calcium silicate board. The bottom mold 40 made in the above manner has good rigidity and can withstand the impact of concrete pouring. When pouring concrete, the connecting member 10 and the steel bar truss 50 are wrapped to form a floor slab. After the concrete solidifies to form the floor slab, the bottom mold 40 does not need to be removed, and the bottom mold 40 and the floor slab form an integral body. It should be noted that when the bottom mold 40 is in use, the first surface is used to carry the connecting member 10 and the steel bar truss 50. The first surface faces away from the ground direction, and the first surface can also be called the top surface or the upper surface. The second surface faces the ground direction, and the second surface can also be called the bottom surface or the lower surface.

[0062] In the embodiments of the present invention, referring to Figure 4 , one setting method of the steel bar truss 50 is that the steel bar truss 50 includes an upper chord steel bar 51, two lower chord steel bars 52 located on both sides below the upper chord steel bar 51, and web steel bars 53 fixedly connected to the upper chord steel bar 51 and the lower chord steel bars 52 at both ends respectively. According to different connection requirements, the steel bar truss 50 is fixedly welded to the connecting member 10 through the lower chord steel bar 52, or the steel bar truss 50 is fixedly welded to the connecting member 10 through the web steel bar 53. According to different requirements, different specifications of the steel bar truss 50 can be selected. The specifications of the upper chord steel bar 51, the lower chord steel bar 52, and the web steel bar 53 of different specifications of the steel bar truss 50 can be the same or different. For example, the diameter range of the lower chord steel bar 52 can be selected from different sizes within the range of 6 - 14 mm according to different requirements. The types of the upper chord steel bar 51, the lower chord steel bar 52, and the web steel bar 53 of different specifications of the steel bar truss 50 can also be different, and the types of the upper chord steel bar 51, the lower chord steel bar 52, and the web steel bar 53 of the same steel bar truss 50 can also be different. For example, the steel bars can be plain round steel bars, ribbed steel bars, etc.

[0063] In the embodiments of the present invention, the bonded connector 10, the steel bar truss 50 and the bottom form 40 can be made into a bonded non-removable bottom form steel bar truss floor slab. One manufacturing method of the bonded non-removable bottom form steel bar truss floor slab is that during the production process of making the bottom form 40 with cement-based material, before the cement-based board solidifies, a plurality of connectors 10 are placed on the cement-based board according to preset requirements. After positioning at the first surface position, with a little vertical downward force, the connector 10 is placed in place, that is, the supporting part 12 on the connector 10 extends into the cement-based board, the bonding part 13 on the connector 10 is connected to the upper surface of the first surface of the bottom form 40, and the connecting part 11 on the connector 10 is bonded to the first surface. The slurry of the bottom form 40 can wrap the bonding part 13 on the upper surface of the bottom form 40 through the overflow hole 21. Then, after the cement-based board solidifies and forms strength, the connection between the connector 10 and the bottom form 40 is completed. Then, the steel bar truss 50 is welded to the connecting part 11 of the connector 10, that is, a bonded non-removable bottom form steel bar truss floor slab is formed.

[0064] Another manufacturing method of the bonded non-removable bottom form steel bar truss floor slab is that the steel bar truss 50 can be first welded to the connecting part 11 of the connector 10, and then during the production process of the bottom form 40, before the cement-based board solidifies, the connector 10 is placed on the cement-based board according to preset requirements. After positioning at the first surface position, with a little vertical downward force, the connector 10 is placed in place. Then, after the cement-based board solidifies and forms strength, the connection between the connector 10 and the bottom form 40 is completed, that is, a bonded non-removable bottom form steel bar truss floor slab is formed.

[0065] In the production of the bonded non-removable bottom form steel bar truss floor slab, the bonding part 13 of the connector 10 is connected to the first surface of the bottom form 40, that is, the bonding part 13 is connected to the upper surface of the cement-based board, rather than being buried in the board of the cement-based board. The bonding force between the bonding part 13 and the cement-based material is used to bear the load during the floor construction stage. At the same time, through the small supporting part 12, it can not only play a role in vertically positioning the connector 10, but also provide a certain anchoring force to bear the load during the floor construction stage, which plays a role of secondary safety protection. Therefore, the connector 10 in the embodiments of the present invention can effectively solve the defect problems existing in the traditional non-removable bottom form steel bar truss floor slab, such as the problems that materials such as steel bars or steel plates buried in the cement-based board have a greater negative impact on the performance of the cement-based board, and stress concentration is likely to occur at the weak cross-section of the embedding, resulting in premature failure of the board.

[0066] When the bonded non-detachable bottom formwork steel bar truss floor slab is in use after being manufactured, the bottom formwork 40 can be used only as a bottom formwork and does not participate in the structural force. Or, when the bottom formwork 40 is made of a cement-based material with good performance, such as the bottom formwork 40 is made of an ultra-high-strength cement-based material, so that the bottom formwork 40 has good performance and there is no continuous layout along the plate length direction, it can also participate in the structural force during the floor construction stage. Through structural calculation, about 50% of the floor slab quantity can be reduced, greatly improving the flatness of the bottom of the slab.

[0067] Continue to refer to Figures 1 to 3 , in an implementation manner of the connecting member 10 in the embodiment of the present invention, the connecting member 10 includes two main plates, a supporting hook and a flanging plate. The two main plates are bent to form a connecting portion 11, and the intersection of the two main plates extends along a first vertical direction. A supporting hook is respectively provided at one end of each main plate away from the intersection, and the supporting hook extends along a second vertical direction to form a supporting portion 12, and the first direction is opposite to the second direction. A flanging plate is provided at one end of each main plate away from the intersection, and the flanging plate extends transversely to form an adhesive portion 13. Taking Figure 1 the orientation in

[0068] the connecting member 10 can be a plate-like structure of an integrally formed structure, and the main plate, the supporting hook and the flanging plate are made by processes such as cutting, stamping and bending. Taking one of the manufacturing processes as an example, a plate with a thickness of 0.6-1.2 mm is selected as the base plate, and stamping or bending is performed at the center of the base plate. The main plate and the flanging plate are formed by stamping or bending processes. The main plate protrudes from the plane where the flanging plate is located, and flanging plates are respectively provided on the two main plates.

[0069] Then, along the length direction of the flanging plate, multiple narrow strip structures are sheared, stamped or cut out on the flanging plate on the die. The width of the narrow strip structure can be 2-4 mm. According to different requirements, multiple narrow strip structures can be sheared, stamped or cut out on the flanging plate on the die.

[0070] Finally, if the supporting hook is not formed by one-time shearing and stamping with the narrow strip structure, the narrow strip structure can be bent away from the main plate by a bending process, and then a hook head is bent at one end of the narrow strip structure away from the main plate, so as to form the supporting hook.

[0071] Refer to Figure 5, during use, the support hook and the flanging plate of the connecting member 10 are connected to the bottom mold 40, and the main body plate is used to connect with the steel bar truss 50. The flanging plate is connected to the upper surface of the first side of the bottom mold 40, and the flanging plate is in contact with the cement-based material surface, which can effectively increase the adhesion between the flanging plate and the cement-based material, so as to utilize the adhesive force between the flanging plate and the cement-based material to bear the load during the floor construction stage. At the same time, the support hook plays a positioning role for the connecting member 10. The size ratio of the support hook is very small, and a small and thin support hook is pre-bent on the connecting member 10, and this small and thin support hook can also play a role in providing a certain anchoring force.

[0072] The main body plate protrudes from the first side. After the steel bar truss 50 is connected to the main body plate, the main body plate can increase the height of the steel bar truss 50 relative to the bottom mold 40, forming the concrete protection layer thickness of the lower chord steel bar 52. When pouring concrete, it makes it easier for the concrete to enter the bottom of the steel bar truss 50, so that it is easier to wrap the steel bar truss 50, making the connection between the steel bar truss 50 and the concrete more firm.

[0073] Further, referring to Figure 1 and Figure 6 , in some realizable embodiments of the present invention, according to different connection requirements, there is a first included angle between two main body plates, and the range of the first included angle is greater than or equal to 0 degrees. Figure 1 The angle a shown in Figure 1 is the angle value of the first included angle, and a≥0 degrees. Referring to Figures 1 to 3 , when a>0 degrees, the two main body plates form a V-shaped structure. The V-shaped structure is relatively stable and not easy to deform, so it can provide relatively stable support for the steel bar truss 50. Further, in order to make it easier for the concrete to wrap the main body plate, referring to

[0074] Referring to Figures 6 to 9 , when a = 0 degrees, the two main body plates form an I-shaped structure. The I-shaped structure is relatively narrow and can provide relatively stable support for the steel bar truss 50. Further, when a = 0 degrees, the main body plate can also be provided with a slurry leakage hole 20, and the concrete can pass through the slurry leakage hole 20 to pass through the main body plate of the I-shaped structure, so that the concrete on both sides of the I-shaped structure is in contact and integrated to wrap the main body plate.

[0075] Further, continue to refer to Figure 1 and Figure 6 , in some realizable embodiments of the present invention, according to different connection requirements, there is a second included angle between the support hooks located on different main body plates, and the range of the second included angle is greater than or equal to 0 degrees. Figure 6The angle b shown in [figure] is the angular value of the second included angle, and b ≥ 0 degrees. Refer to Figure 6 , when b > 0 degrees, the two support hooks form a V-shaped structure. The V-shaped structure is relatively stable and not prone to relative movement with the bottom mold 40. At the same time, the provided anchoring force is also more stable. Refer to Figure 1 , when b = 0 degrees, the two support hooks are approximately parallel and occupy less space. When using Figure 6 、 Figure 10 the type of the connecting member 10 shown, it is advisable that b > 0 degrees. When using Figure 1 the type of the connecting member 10, b can be equal to 0 degrees or not equal to 0 degrees.

[0076] To further enhance the connection strength between the flanging plate and the bottom mold 40, refer to Figure 1 、 Figure 3 and Figure 8 , overflow holes 21 are provided on the flanging plate. Through the overflow holes 21, the contact area between the flanging plate and the cement-based material can be increased, and the adhesion between the cement-based material and the flanging plate is greater, so that the connection between the cement-based material and the flanging plate is more stable and firm. Further, according to different requirements, the overflow holes 21 can be provided only on a part of the flanging plate, and the overflow holes 21 can not be provided on a part of the flanging plate.

[0077] In the embodiments of the present invention, according to different requirements, the leakage holes 20 on the main body plate can be one or more. The leakage holes 20 can be circular holes or oblong holes, or hole structures of other shapes. When there are multiple leakage holes 20, the multiple leakage holes 20 can be arranged at intervals along the length direction of the main body plate, or along the width direction of the main body plate, or a part of the leakage holes 20 are arranged at intervals along the length direction, and a part of the leakage holes 20 are arranged at intervals along the width direction. Correspondingly, the overflow holes 21 on the flanging plate can be one or more. The overflow holes 21 can be circular holes or oblong holes, or hole structures of other shapes. When there are multiple overflow holes 21, the multiple overflow holes 21 can be arranged at intervals along the length direction of the flanging plate, or along the width direction of the flanging plate, or a part of the overflow holes 21 are arranged at intervals along the length direction, and a part of the overflow holes 21 are arranged at intervals along the width direction.

[0078] Refer to Figure 10 and Figure 11, To further enhance the connection stability between the main plates and the steel bar truss 50, one feasible way is that one end of the two main plates at the intersection is provided with a plurality of reinforcing flanges 30. The reinforcing flanges 30 can be located between the two main plates or on the outer side between the two main plates. Through the reinforcing flanges 30, the relative thickness of the main plates can be increased, thereby increasing the contact surface with the steel bar truss 50, improving the support strength of the main plates, and enhancing the connection strength and stability. At the same time, when the main plates and the steel bar truss 50 are welded, through the reinforcing flanges 30, the relative thickness of the main plates can be increased, which can prevent the main plates from being penetrated and improve the connection stability of the welding points.

[0079] There are various implementation methods for the reinforcing flanges 30. The reinforcing flanges 30 extend along the second vertical direction. And / or, the reinforcing flanges 30 extend along the first vertical direction; and / or the reinforcing flanges 30 extend horizontally. For example, refer to Figure 10 , each main plate is bent downward to form the reinforcing flanges 30. There can be a plurality of reinforcing flanges 30, that is, each main plate can be first bent downward, then upward, then downward, and so on, thereby forming a plurality of vertical reinforcing flanges 30, and the plurality of vertical reinforcing flanges 30 are stacked along the horizontal direction. For another example, each main plate can be first bent horizontally, then upward or downward, then horizontally, then upward or downward, and so on, thereby forming a plurality of horizontally stacked reinforcing flanges 30, and the plurality of horizontal reinforcing flanges 30 are stacked along the vertical direction.

[0080] Furthermore, according to different requirements, the plurality of reinforcing flanges 30 can be arranged parallel to each other, such as refer to Figure 10 , the plurality of reinforcing flanges 30 are parallel to each other in the vertical direction, or the plurality of reinforcing flanges 30 are parallel to each other in the horizontal direction. In addition to the parallel arrangement, the plurality of reinforcing flanges 30 can also be arranged at an angle. For example, the plurality of reinforcing flanges 30 form a V-shaped structure, the reinforcing flanges 30 and the main plate form a Y-shaped structure, or the plurality of reinforcing flanges 30 form an M-shaped structure, a W-shaped structure, an inverted L-shaped structure, etc. Of course, the plurality of reinforcing flanges 30 can also form other shaped structures, which are not listed one by one here. All other forms obtained by those skilled in the art without creative labor fall within the scope of protection of the embodiments of the present invention.

[0081] In the embodiments of the present invention, according to different requirements, the length of the connecting member 10 can be set accordingly, refer to Figure 3 and Figure 8 , the connecting member 10 can be set to a shorter length. Refer to Figure 12 and Figure 13 , the connecting member 10 can be set to a longer length. Further, there are a plurality of support hooks and flanging plates, and the support hooks and flanging plates are arranged at intervals along the length direction of the main plate.

[0082] According to the different lengths of the connecting member 10, there are also various connection methods between the connecting member 10 and the steel bar truss 50. Refer to Figure 4 , when the connecting member 10 has a shorter length, the connecting member 10 can be connected to one steel bar truss 50. For example, the length direction of the connecting member 10 extends along the width direction of the steel bar truss 50, and the connecting member 10 is connected to one or two lower chord steel bars 52 in one steel bar truss 50, or is connected to the web steel bars 53 on one side or both sides in one steel bar truss 50. Another example is that the length direction of the connecting member 10 extends along the length direction of the steel bar truss 50, and multiple connecting members 10 are arranged at intervals and are connected to the same lower chord steel bar 52 in one steel bar truss 50, or are connected to the web steel bars 53 on the same side in one steel bar truss 50.

[0083] Refer to Figure 14 , when the connecting member 10 has a longer length, the connecting member 10 can be connected to multiple steel bar trusses 50. For example, the length direction of the connecting member 10 extends along the width direction of the steel bar truss 50, and the connecting member 10 is connected to the lower chord steel bars 52 in multiple steel bar trusses 50, or is connected to the web steel bars 53 in multiple steel bar trusses 50. Another example is to refer to Figure 15 , the length direction of the connecting member 10 extends along the length direction of the steel bar truss 50, and the connecting member 10 is connected to the same lower chord steel bar 52 in one steel bar truss 50, or is connected to the web steel bars 53 on the same side in one steel bar truss 50.

[0084] In the embodiments of the present invention, there are various implementation manners of the web steel bars 53. One achievable manner is that the web steel bars 53 include multiple sub-steel bars, and adjacent sub-steel bars are connected end to end at an angle to form a waveform structure. Another achievable manner is that the web steel bars 53 are of an integral structure and are in a waveform structure. When connecting with the upper chord steel bar 51 and the lower chord steel bar 52, the peak part of the waveform structure is connected to the upper chord steel bar 51, and the lower chord steel bar 52 is connected to the middle part of the waveform structure. Refer to Figure 16 , after the lower chord steel bar 52 is connected to the web steel bars 53, there is a certain distance between the lower chord steel bar 52 and the first surface of the bottom form 40, forming the concrete protective layer thickness of the lower chord steel bar 52, so as to facilitate the concrete to enter the bottom of the lower chord steel bar 52, so that the concrete can more densely wrap the steel bar truss 50.

[0085] When the connecting member 10 is connected to the web steel bars 53, in order to enhance the connection stability between the web steel bars 53 and the connecting member 10, one achievable manner is to refer to Figure 16, a horizontal bending angle 54 is provided on the web bar reinforcement 53, and the web bar reinforcement 53 is connected to the connecting member 10 through the horizontal bending angle 54. The horizontal bending angles 54 on different web bar reinforcements 53 are bent in opposite directions. Through the horizontal bending angle 54, the web bar reinforcement 53 can be more conveniently connected to the connecting member 10, so that the connection between the steel bar truss 50 and the connecting member 10 is more stable, and the separation between the steel bar truss 50 and the connecting member 10 is avoided.

[0086] Based on the connecting member 10 provided in the above embodiment, correspondingly, refer to Figure 4 , Figure 14 and Figure 15 , an adhesive type non-removable bottom form steel bar truss floor slab provided by an embodiment of the present invention includes: a bottom form 40, a connecting member 10, and a steel bar truss 50. Among them, the connecting member 10 can be realized by the connecting member 10 in the above embodiment.

[0087] Among them, the bottom form 40 is made of a cement substrate, including but not limited to being made of an ultra-high-strength cement-based material or a high-ductility waterproof and crack-resistant composite cement-based material. The bottom form 40 has a first surface and a second surface arranged opposite to each other.

[0088] The connecting member 10 can be realized by the connecting member 10 described in Embodiment 1. The structure of the connecting member 10 can refer to the content recorded in Embodiment 1, which will not be elaborated here one by one. Specifically, refer to Figures 1 to 3 , Figures 6 to 8 and Figure 10 , the connecting member 10 includes a connecting portion 11, a supporting portion 12, and an adhesive portion 13. The adhesive portion 13 is arranged between the connecting portion 11 and the supporting portion 12. The connecting portion 11 protrudes from the first surface, the supporting portion 12 is located inside the bottom form 40, and the adhesive portion 13 is adhered to the surface of the first surface.

[0089] Refer to Figure 4 , the steel bar truss 50 includes an upper chord steel bar 51, two lower chord steel bars 52 located on both sides below the upper chord steel bar 51, and web bar reinforcements 53 fixedly connected to the upper chord steel bar 51 and the lower chord steel bars 52 respectively. Refer to Figure 5 , Figures 9 to 11 and Figure 16 , the steel bar truss 50 is fixedly welded to the connecting portion 11 of the connecting member 10 through one of the lower chord steel bars 52 and the web bar reinforcements 53.

[0090] In use, the bonded connector 10 is used in cooperation with the bottom form 40 made of a cement substrate. The connector 10 is connected to the bottom form 40 through the support portion 12 and the bonding portion 13. The connecting portion 11 of the connector 10 is used to connect with the steel bar truss 50. When manufacturing the bottom form 40, before the bottom form 40 solidifies, the connection between the connector 10 and the bottom form 40 can be completed, avoiding a large number of locking operations between the connector 10 and the floor deck. When the connector 10 is connected to the bottom form 40, the bonding portion 13 on the connector 10 is connected to the upper surface of the first surface of the bottom form 40, and the bonding force between the bonding portion 13 and the cement-based material is used to bear the load during the floor slab construction stage, avoiding problems such as stress concentration in the local area of the bottom form 40 caused by embedding the connector 10 or steel bars and other components inside the bottom form 40, thereby avoiding negative impacts on the mechanical properties of the bottom form 40 and ensuring the structural strength of the bottom form 40.

[0091] The support portion 12 of the connector 10 plays a positioning role for the connector 10. The size of the support portion 12 is very small compared to the overall size of the bottom form 40, and the negative impact of the support portion 12 on the mechanical properties of the cement substrate is relatively small and can be ignored. Moreover, the support portion 12 can also provide a certain anchoring force for the connector 10, making the connection between the connector 10 and the bottom form 40 more secure.

[0092] The connecting portion 11 on the connector 10 protrudes from the first surface and is used to connect with the steel bar truss 50, realizing the fixation between the steel bar truss 50 and the bottom form 40 through the connector 10. The connector 10 is made of, but not limited to, metal materials. The connection between the steel bar truss 50 and the connector 10 includes, but is not limited to, welding fixation. The steel bar truss 50 and the connector 10 are connected by welding, making the bottom form 40, the steel bar truss 50, and the connector 10 form a whole, increasing the stiffness of the floor deck applying the connector 10 during the construction stage. During the construction stage of the floor slab, there will be no relative slip between the steel bar truss 50 and the bottom form 40, and they will jointly bear force and deformation, thereby reducing the deformation of the bottom form 40 during the construction stage and making the floor deck have a better flatness effect on the bottom of the floor.

[0093] Furthermore, the bottom form 40 is made of a cement substrate. After pouring concrete on the bottom form 40, there is no need to perform the operation of removing the bottom form, reducing the form removal construction of the bottom form 40. It can form a whole with the poured floor slab, having good integrity. Compared with the floor deck with a removable bottom form, it has the advantages of convenient and efficient construction. The bottom form 40 does not need to return to the factory, avoiding processes such as cleaning, quality inspection, and secondary processing of the bottom form, and greatly improving the production efficiency.

[0094] One connection method between the connector 10 and the steel bar truss 50 is as follows. Refer to Figure 4 and Figure 14, the connecting member 10 extends along the width direction of the bottom formwork 40 and is connected to at least one lower chord steel bar 52 on the steel bar truss 50. The length direction of the connecting member 10 is the same as the width direction of the bottom formwork 40, and the length direction of the connecting member 10 is the same as the width direction of the steel bar truss 50. A plurality of connecting members 10 are arranged at intervals along the length direction of the steel bar truss 50. Figure 4 , the connecting member 10 is correspondingly connected to two lower chord steel bars 52 on the same steel bar truss 50. Refer to Figure 14 , another realizable way of the connecting member 10 is that, on the basis of the previous realizable way, the length of the connecting member 10 is increased, so that the overall length of the connecting member 10 becomes longer, and it can be used to connect the lower chord steel bars 52 on two or more steel bar trusses 50. As Figure 14 shown, three or more steel bar trusses 50 can be correspondingly connected to one connecting member 10.

[0095] In the embodiment of the present invention, according to different requirements, the width of the bottom formwork 40 can be set accordingly, and different numbers of steel bar trusses 50 can be arranged on each bottom formwork 40. For example, one realizable way is that the width of the bottom formwork 40 is 600 mm, and three steel bar trusses 50 can be arranged at intervals in the width direction of the bottom formwork 40. Another example is that the width of the bottom formwork 40 is 1200 mm, and six steel bar trusses 50 can be arranged at intervals in the width direction of the bottom formwork 40.

[0096] Refer to Figure 15 , another connection method between the connecting member 10 and the steel bar truss 50 is that the connecting member 10 extends along the length direction of the bottom formwork 40. The connecting member 10 is connected to one lower chord steel bar 52 on the steel bar truss 50; or the connecting member 10 is connected to the web member steel bar 53 on one side of the steel bar truss 50. The length direction of the connecting member 10 is the same as the length direction of the bottom formwork 40, and the length direction of the connecting member 10 is the same as the length direction of the steel bar truss 50. A plurality of connecting members 10 are arranged at intervals along the width direction of the steel bar truss 50. Figure 15 , the connecting member 10 is correspondingly connected to one lower chord steel bar 52 on the same steel bar truss 50, or the connecting member 10 is correspondingly connected to the web member steel bar 53 on one side of the same steel bar truss 50. There can be a plurality of connecting members, and the plurality of connecting members are connected to the lower chord steel bar 52 or the web member steel bar 53 at intervals along the width direction of the steel bar truss 50.

[0097] When the connecting member 10 is connected to the web bar 53, to enhance the connection stability between the web bar 53 and the connecting member 10, one achievable way is that the web bar 53 is provided with a horizontal bending angle 54, and the web bar 53 is connected to the connecting member 10 through the horizontal bending angle 54. The horizontal bending angles 54 on different web bars 53 are bent in opposite directions. Through the horizontal bending angle 54, it is more convenient for the web bar 53 to be connected to the connecting member 10, thereby making the connection between the steel bar truss 50 and the connecting member 10 more stable and preventing the steel bar truss 50 from being disengaged from the connecting member 10.

[0098] See Figure 4 and Figure 17 , at the intersections of the opposite ends of the bottom formwork 40 with the second surface, there are respectively chamfer angles 41. The chamfer angles 41 on the bottom formwork 40 and the chamfer angles 41 on the adjacent bottom formwork 40 can form an accommodating space. The accommodating space can be a triangular structure that is narrower at the top and wider at the bottom. When making the bottom decorative surface layer, first fill the accommodating space formed by the chamfer angles 41 with a sealing material for leveling. The sealing material can be materials such as elastic cement mortar or wall mud. After drying, then perform the next construction step of the decorative layer. This structural method can effectively prevent cracking at the joint seams at the bottom of the slab, solving the problem of cracking of the bottom decorative layer caused by the traditional joint seam method.

[0099] To further reduce the misalignment of the splicing seams between two adjacent bottom formworks 40, see Figure 17 , the non - removable bottom formwork steel bar truss floor slab further includes a fixing plate 60. The fixing plate 60 is fixedly connected to the first surface and straddles the splicing seam between two adjacent bottom formworks 40 and is connected to the adjacent bottom formworks 40. Through - holes for fasteners to pass through can be pre - provided on the fixing plate 60. The fixing plate 60 can be connected to the two bottom formworks 40 respectively by self - tapping screws, making the two adjacent bottom formworks 40 form an integral body. Through the fixing plate 60, the internal force between the bottom formworks 40 can be transmitted, enabling the bottom formworks 40 to participate in the force during the construction stage, reducing the relative deformation amount between the bottom formworks 40 during the construction stage, and improving the flatness effect of the bottom of the floor slab.

[0100] In the embodiment of the present invention, the fixing plate 60 can be realized in various ways. The fixing plate 60 includes but is not limited to a steel plate. The cross - sectional form of the fixing plate 60 includes a straight - line type. The plate with a straight - line type structure straddles the splicing seam between adjacent bottom formworks 40 and is connected to the two bottom formworks 40. See the figure, the cross - sectional form of the fixing plate 60 also includes an L - type and a T - type. The plates with L - type and T - type structures are connected to the bottom formwork 40 through the horizontal plate, and the vertical plate enhances the structural strength of the fixing plate 60, making the fixing plate 60 not easily bend, thereby more effectively reducing the relative deformation amount of the bottom formwork 40 during the construction stage and improving the flatness effect of the bottom of the floor slab. The cross - sectional form of the fixing plate 60 also includes a trough - type and a C - type. The plates with trough - type and C - type structures have high structural strength and are not easily bent, and can reduce the relative deformation amount of the bottom formwork 40.

[0101] According to different requirements, the fixing plate 60 can be arranged at different positions of the bottom mold 40. For example, referring to the figure, the fixing plate 60 is fixedly connected to the end of the bottom mold 40 along the length direction, so that the fixing plate 60 straddles the splicing seam between two adjacent bottom molds 40 spliced along the length direction, and connects two adjacent bottom molds 40 arranged along the length direction. When splicing along the length direction, through the fixing plate 60, two adjacent bottom molds 40 are formed into a whole, and the internal force between the bottom molds 40 can be transmitted through the fixing plate 60, so that the bottom mold 40 can participate in the force during the construction stage, reducing the relative deformation amount of the bottom mold 40 during the construction stage and improving the flatness effect of the bottom of the floor slab.

[0102] The fixing plate 60 is fixedly connected to the end of the bottom mold 40 along the width direction. Thus, the fixing plate 60 straddles the splicing seam between two adjacent bottom molds 40 spliced along the width direction, connects two adjacent bottom molds 40 arranged along the width direction, and transmits the internal force between the bottom molds 40 through the fixing plate 60, so that the bottom mold 40 can participate in the force during the construction stage, reducing the relative deformation amount of the bottom mold 40 during the construction stage and improving the flatness effect of the bottom of the floor slab.

[0103] It should be noted that in the embodiment of the present invention, the fixing plate 60 can be fixedly connected only to the end of the bottom mold 40 along the length direction, or can be fixedly connected only to the end of the bottom mold 40 along the width direction, or can be fixedly connected with the fixing plate 60 at both the end of the bottom mold 40 along the length direction and the end along the width direction.

[0104] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adhesive connector, characterized in that, the connector is made of metal material, and the connector includes: a connecting part; a supporting part; an adhesive part, and the adhesive part is arranged between the connecting part and the supporting part; the connector includes two main plates, supporting hooks and flanging plates; the two main plates are bent to form the connecting part, and the intersection of the two main plates extends along the first vertical direction; each main plate is respectively provided with a supporting hook at one end far away from the intersection, and the supporting hook extends along the second vertical direction to form the supporting part, and the first direction is opposite to the second direction; each main plate is provided with a flanging plate at one end far away from the intersection, and the flanging plate extends horizontally to form the adhesive part.

2. The adhesive connector according to claim 1, characterized in that, there is a first included angle between the two main plates, and the range of the first included angle is greater than or equal to 0 degrees; there is a second included angle between the supporting hooks on different main plates, and the range of the second included angle is greater than or equal to 0 degrees.

3. The adhesive connector according to claim 1, characterized in that, the main plate is provided with slurry leakage holes, and the flanging plate is provided with slurry overflow holes.

4. The adhesive connector according to claim 1, characterized in that, one end of the two main plates at the intersection is provided with a plurality of reinforcing flanges; the reinforcing flanges extend along the second vertical direction; and / or, the reinforcing flanges extend along the first vertical direction; and / or the reinforcing flanges extend horizontally.

5. The adhesive connector according to any one of claims 1 to 4, characterized in that, both the supporting hooks and the flanging plates are multiple, and the supporting hooks and the flanging plates are arranged at intervals along the length direction of the main plate.

6. An adhesive formwork-free bottom steel bar truss floor slab, characterized in that, it includes: a bottom formwork, the bottom formwork is made of a cement substrate, and the bottom formwork has a first surface and a second surface arranged opposite to each other; a connector, the connector includes a connecting part, a supporting part and an adhesive part; the adhesive part is arranged between the connecting part and the supporting part; the connecting part protrudes from the first surface, the supporting part is located inside the bottom formwork, and the adhesive part is adhered to the surface of the first surface; a steel bar truss, the steel bar truss includes an upper chord steel bar, two lower chord steel bars located on both sides below the upper chord steel bar, and web steel bars respectively fixedly connected to the upper chord steel bar and the lower chord steel bar; the steel bar truss is fixedly connected to the connecting part of the connector through one of the lower chord steel bars and the web steel bars; the connector includes two main plates, supporting hooks and flanging plates; the two main plates are bent to form the connecting part, and the intersection of the two main plates extends along the first vertical direction; each main plate is respectively provided with a supporting hook at one end far away from the intersection, and the supporting hook extends along the second vertical direction to form the supporting part, and the first direction is opposite to the second direction; At one end of each of the main plates away from the intersection, there is provided a flanging plate, and the flanging plate extends transversely to form the bonding portion.

7. The bonded non-removable bottom formwork steel bar truss floor slab according to claim 6, wherein, the connecting member extends along the width direction of the bottom formwork and is connected to at least one lower chord steel bar on the steel bar truss.

8. The bonded non-removable bottom formwork steel bar truss floor slab according to claim 6, wherein, the connecting member extends along the length direction of the bottom formwork; the connecting member is connected to the web steel bars on at least one side of the steel bar truss.

9. The bonded non-removable bottom formwork steel bar truss floor slab according to claim 8, wherein, the web steel bar is provided with a horizontal bending angle, and the web steel bar is connected to the connecting member through the horizontal bending angle.

10. The bonded non-removable bottom formwork steel bar truss floor slab according to any one of claims 6 to 9, wherein, it further includes a fixing plate, and the fixing plate is fixedly connected to the first surface and straddles the splicing seam between two adjacent bottom formworks and is connected to the adjacent bottom formworks.

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