A composite floor support structure
By combining L-shaped support plates, detachable bolts, and adjustable support screws, the problems of difficulty in ensuring accuracy and material waste in existing composite floor slab support systems are solved, achieving stability, adjustability, and reusability, thereby improving construction efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CNNC HUACHEN CONSTR ENG CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-24
Smart Images
Figure CN224549676U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of construction engineering technology, and more specifically, to a composite floor slab support structure. Background Technology
[0002] As a core solution for prefabricated building floor systems, composite concrete slabs, through a composite construction mode of "precast base slab + cast-in-place layer," leverage the advantages of standardized production and efficient on-site assembly, resulting in over 80% application in prefabricated building floor slabs. In existing technologies, composite floor slab support systems primarily utilize angle steel supports or steel brackets. This system involves pre-embedded parts in the concrete walls, which are then welded to the angle steel supports or steel brackets after wall construction to form a support structure. This approach offers significant advantages such as high load-bearing capacity, convenient assembly, and strong applicability, making it a mature and widely used support solution in the industry.
[0003] However, the existing support system is limited by its design theory and structural characteristics, and there are the following technical problems that urgently need to be solved: First, during the installation of embedded parts and welding of supports, it is difficult to ensure the accuracy of operation, which makes it difficult for each panel to be kept on the same plane after the precast base plate is hoisted. Additional leveling measures are required, which increases the complexity of construction. Second, the support angle steel and steel brackets cannot be removed after construction, which results in a large waste of resources as consumable materials and increases the cost of the project. Third, the support system adopts a welding connection method, which involves a large amount of welding work and is highly dependent on manual operation, directly extending the construction period. Utility Model Content
[0004] In view of this, this application provides a composite floor slab support structure, which aims to improve the problems of difficult leveling of precast slabs, high construction material costs, large amount of welding work and high dependence on manual labor in the prior art, resulting in long construction cycles.
[0005] This application provides a composite floor slab support structure, the composite floor slab including a precast slab and a cast-in-place layer located on the precast slab, the precast slab being disposed on the top of the wall;
[0006] The supporting structure includes:
[0007] The support base includes an L-shaped support plate, which includes a first plate and a second plate that are perpendicular to each other and fixedly connected. One surface of the first plate abuts against the wall. The first plate has a first through hole, and the second plate has a screw-in through hole.
[0008] The embedded component includes a detachable bolt, an anchor embedded in the wall, a conical sleeve, and a pre-embedded screw rod. One end of the pre-embedded screw rod is connected to the anchor, and the other end of the pre-embedded screw rod is screwed to the small-diameter end of the conical sleeve. The large-diameter end face of the conical sleeve is parallel to the wall surface. The shank of the detachable bolt is screwed to the large-diameter end of the conical sleeve. The shank of the detachable bolt passes through the first through hole, and the head of the detachable bolt abuts against the other surface of the first plate.
[0009] An adjustable support assembly includes a support screw, which is screwed to the second plate, and the top end of the support screw abuts against the bottom surface of the precast slab.
[0010] Preferably, the adjustable support assembly further includes a support plate, the bottom surface of which is connected to the top end of the support screw, and the top surface of which abuts against the precast slab.
[0011] Preferably, the adjustable support assembly further includes a top block, which is fixedly connected to the bottom surface of the support plate, and the support screw abuts against the top block.
[0012] Preferably, the adjustable support assembly further includes a guide seat, which is fixedly connected to the top block. The guide seat has a guide hole, and the support screw passes through the guide hole.
[0013] Preferably, the support base further includes a reinforcing plate, which is fixedly connected between the first plate and the second plate.
[0014] Preferably, the pre-embedded component further includes a dustproof sleeve, which is screwed to the pre-embedded screw and abuts against the end face of the tapered sleeve near the anchor.
[0015] Preferably, the adjustable support assembly further includes a support nut, which is fixedly connected to the second plate, and the support screw is screwed to the support nut.
[0016] Preferably, a washer is provided between the head of the removable bolt and the first plate, and the shank of the removable bolt passes through the washer.
[0017] Preferably, the bottom outer contour of the support screw is a regular hexagon.
[0018] Preferably, the anchor includes a pre-embedded rod, which is screwed to the pre-embedded screw, and the centerline of the pre-embedded rod is perpendicular to the axis of the pre-embedded screw.
[0019] Compared with the prior art, the composite floor slab support structure provided in this application achieves at least the following beneficial effects:
[0020] The composite floor slab support structure provided in this application features an L-shaped support slab whose first plate abuts tightly against the wall. Combined with a pre-embedded structure consisting of embedded bolts, anchors, and a conical sleeve, a stable anchoring system is formed. The large-diameter end of the conical sleeve is parallel to the wall surface, and its connection to the conical sleeve via detachable bolts ensures that the support base effectively transfers the load of the composite floor slab to the wall. This prevents the support structure from shifting or overturning during construction, guaranteeing construction safety and structural stability, and allowing it to withstand significant construction loads. In the adjustable support assembly, the support bolts are screwed to the second plate. Rotating the support bolts allows for flexible adjustment of the height of the precast slab abutting against them, ensuring that multiple precast slabs remain on the same plane, guaranteeing overall flatness and installation accuracy, and reducing floor slab installation errors caused by improper support height. The leveling process for the precast slabs using this support structure is simple and convenient. In addition, the pre-embedded components are pre-embedded during the wall construction stage, and the support base can be quickly fixed to the wall with detachable bolts during subsequent installation. The detachable bolts, conical sleeves, support screws and L-shaped support plates can all be disassembled and recycled after construction and reused, reducing material waste and construction costs. The assembly and disassembly process is simple and helps to shorten the construction cycle.
[0021] Of course, any product implementing this application need not specifically need to achieve all of the technical effects described above at the same time.
[0022] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.
[0024] Figure 1 The figure shown is a three-dimensional structural diagram of the composite floor slab support structure provided in the embodiment of this application;
[0025] Figure 2 The figure shown is a side view of the composite floor slab support structure provided in the embodiment of this application;
[0026] Figure 3 The diagram shown is a structural schematic of the construction state of the composite floor slab support structure provided in the embodiment of this application.
[0027] Explanation of reference numerals in the attached figures:
[0028] 10-Composite floor slab, 11-Precast slab, 20-Wall, 100-Support base, 110-L-shaped support plate, 111-First slab, 1111-First through hole, 112-Second slab, 120-Reinforcing plate, 200-Embedded component, 210-Anchor, 211-Embedded rod, 220-Conical sleeve, 230-Removable bolt, 240-Dustproof sleeve, 300-Adjustable support component, 310-Support screw, 320-Support plate, 330-Top block, 340-Guide seat, 350-Support nut, 401-Washer. Detailed Implementation
[0029] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present application.
[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.
[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0032] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0033] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.
[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0035] Figure 1 The figure shown is a three-dimensional structural diagram of the composite floor slab support structure provided in the embodiment of this application. Figure 2 The figure shown is a side view of the composite floor slab support structure provided in an embodiment of this application. Figure 3 The diagram shown is a structural schematic of the construction state of the composite floor slab support structure provided in the embodiment of this application.
[0036] Please refer to Figures 1 to 3 This application provides a composite floor slab support structure. The composite floor slab 10 includes a precast slab 11 and a cast-in-place layer located on the precast slab 11. The precast slab 11 is disposed on the top of the wall 20.
[0037] The support structure includes a support base 100, a pre-embedded component 200, and an adjustable support component 300.
[0038] The support base 100 includes an L-shaped support plate 110. The L-shaped support plate 110 includes a first plate 111 and a second plate 112 that are perpendicular to each other and fixedly connected. One surface of the first plate 111 abuts against the wall 20. The first plate 111 has a first through hole 1111, and the second plate 112 has a screw-in through hole.
[0039] The pre-embedded component 200 includes a detachable bolt 230, an anchor 210 embedded in the wall 20, a conical sleeve 220, and a pre-embedded screw 250. One end of the pre-embedded screw 250 is connected to the anchor 210, and the other end of the pre-embedded screw 250 is screwed to the small-diameter end of the conical sleeve 220. The large-diameter end face of the conical sleeve 220 is parallel to the surface of the wall 20. The shank of the detachable bolt 230 is screwed to the large-diameter end of the conical sleeve 220. The shank of the detachable bolt 230 passes through the first through hole 1111, and the head of the detachable bolt 230 abuts against the other plate surface of the first plate 111.
[0040] The adjustable support assembly 300 includes a support screw 310, which is screwed to the second plate 112, and the top end of the support screw 310 abuts against the bottom surface of the precast plate 11.
[0041] It is important to understand that before the concrete of wall 20 is poured, the pre-embedded components 200 are positioned according to the design, and the anchors 210, pre-embedded screws 250 and conical sleeves 220 are embedded into the steel mesh of wall 20 at a preset depth to ensure that the anchors 210 are tied and fixed to the steel bars of wall 20 to prevent displacement during pouring; the large diameter end of the conical sleeve 220 faces the outside of wall 20, the axis of the conical sleeve 220 is perpendicular to the wall surface, and its axis is consistent with the installation direction of the subsequently installed detachable bolts 230.
[0042] During installation of the composite floor slab support structure, the support base 100 is first assembled. Specifically, one surface of the first slab 111 abuts against the wall 20. The construction worker rotates the removable bolt 230, causing the shank of the removable bolt 230 to pass through the first through hole 1111 and extend into the conical sleeve 220. The shank of the removable bolt 230 is then screwed into the large-diameter end of the conical sleeve 220 until the head of the removable bolt 230 is tightly abutting against the surface of the first slab 111. Then, the adjustable support assembly 300 is assembled, with the support screw 310 passing through the screw-in through hole and its top end abutting against the bottom surface of the precast slab 11.
[0043] In use: During the construction of the composite floor slab 10, multiple precast slabs 11 are hoisted and erected on top of the wall 20. Multiple support structures are installed on the wall 20 along its length, providing support for the precast slabs 11. When the surfaces of the precast slabs 11 are not on the same plane, their height needs to be adjusted. This is done by operating the support structures supporting the precast slabs 11 and rotating the support screw 310. The support screw 310 moves up and down accordingly, thus adjusting the height of the precast slabs 11. If the support screw 310 is rotated clockwise, it rises; if it is rotated counterclockwise, it falls; and vice versa. Repeat the above operation to adjust the height of multiple precast slabs 11. After the surface height of multiple precast slabs 11 is consistent, tie the cast-in-place layer reinforcement on the precast slabs 11, set up the formwork and pour the concrete. After confirming that the concrete strength of the cast-in-place layer meets the requirements, rotate the support screw 310 counterclockwise to slowly lower the height of the support screw 310. After the support screw 310 is completely separated from the precast slab 11, unscrew the support screw 310 from the screw hole of the second plate 112. Rotate the detachable bolt 230 to unscrew the rod of the detachable bolt 230 from the conical sleeve 220. Remove the L-shaped support plate 110 from the surface of the wall 20. Then, remove the conical sleeve 220 from inside the wall 20.
[0044] The composite floor slab support structure provided in this embodiment has an L-shaped support plate 110 whose first plate 111 is tightly abutting against the wall 20. Combined with the pre-embedded structure of the pre-embedded screw 250, anchor 210 and conical sleeve 220, a stable anchoring system is formed. The large diameter end of the conical sleeve 220 is parallel to the surface of the wall 20. With the screw connection between the removable bolt 230 and the conical sleeve 220, the support base 100 can effectively transfer the load of the composite floor slab 10 to the wall 20, ensuring that the support structure is not easy to shift or overturn during construction, ensuring construction safety and structural stability, and can withstand large construction loads. In the adjustable support assembly 300, the support screw 310 is screwed to the second plate 112. By rotating the support screw 310, the height of the precast slab 11 it abuts can be flexibly adjusted, ensuring that the multiple precast slabs 11 remain on the same plane, guaranteeing the overall flatness and installation accuracy of the multiple precast slabs 11, and reducing floor slab installation errors caused by improper support height. The leveling process of the precast slabs 11 by this support structure is simple and convenient. In addition, the pre-embedded assembly 200 is pre-embedded during the construction stage of the wall 20. During subsequent installation, the support base 100 can be quickly fixed to the wall 20 by the detachable bolts 230. The detachable bolts 230, the conical sleeve 220, the support screw 310, and the L-shaped support plate 110 can all be disassembled and recycled after construction and reused, reducing material waste and construction costs. The assembly and disassembly process is simple and helps to shorten the construction cycle.
[0045] See Figures 1 to 3 In some embodiments, the adjustable support assembly 300 further includes a support plate 320, the bottom surface of which is connected to the top end of the support screw 310, and the top surface of which abuts against the precast slab 11.
[0046] In the support structure of this embodiment, a support plate 320 is added. The top surface of the support plate 320 is in large-area contact with the bottom surface of the precast slab 11, which disperses the support force to a larger area and avoids cracking and damage to the precast slab 11 due to stress concentration. It is especially suitable for thin precast slabs 11 or precast slabs 11 with low bottom strength.
[0047] See Figures 1 to 3 In some embodiments, the adjustable support assembly 300 further includes a top block 330, which is fixedly connected to the bottom surface of the support plate 320, and the support screw 310 abuts against the top block 330.
[0048] In this embodiment, the top block 330 serves as a transition component between the support screw 310 and the support plate 320. On the one hand, by increasing the contact area, stress concentration is avoided, and the support plate 320 is prevented from being deformed or cracked by local stress, thereby improving the structural durability. On the other hand, the top block 330 can be made of high-strength materials (such as cast steel) to enhance the support stiffness of the precast slab 11 and reduce elastic deformation during the construction stage.
[0049] See Figures 1 to 3 In some embodiments, the adjustable support assembly 300 further includes a guide seat 340, which is fixedly connected to the top block 330. The guide seat 340 has a guide hole, and the support screw 310 passes through the guide hole.
[0050] In the support structure of this embodiment, a guide seat 340 is added. The guide seat 340 is fixedly connected to the top block 330, and a guide hole is opened in the guide seat 340 for the support screw 310 to pass through. The hole wall of the guide hole can constrain the radial position of the support screw 310 during the adjustment process, avoid the eccentricity of the support force caused by the tilt of the support screw 310, and ensure that the load is transmitted to the precast plate 11 along the axial direction. This achieves the vertical guidance and anti-eccentricity effect of the support screw 310, and improves the height adjustment accuracy and stability of the adjustable support assembly 300.
[0051] See Figures 1 to 3 In some embodiments, the support base 100 further includes a reinforcing plate 120, which is fixedly connected between the first plate 111 and the second plate 112.
[0052] In this embodiment, by adding a reinforcing plate 120 between the first plate 111 and the second plate 112 of the L-shaped support plate 110, the structural rigidity and deformation resistance of the support base 100 can be improved. In specific implementation, the reinforcing plate 120, as a triangular rib, can effectively distribute the load, reduce the bending stress of the L-shaped support plate 110 under stress (especially when the support screw 310 transmits concentrated loads), and prevent cracking or plastic deformation at the connection.
[0053] See Figure 3 In some embodiments, the pre-embedded component 200 further includes a dustproof sleeve 240, which is screwed to the pre-embedded screw 250 and abuts against the end face of the tapered sleeve 220 near the anchor 210.
[0054] In this embodiment, the dustproof sleeve 240 is screwed to the pre-embedded screw 250 and abuts against the end face of the tapered sleeve 220. During construction, it can effectively prevent impurities such as mortar and dust from entering the thread gap between the tapered sleeve 220 and the pre-embedded screw 250, avoiding thread corrosion or jamming due to contamination. Since the tapered sleeve 220 needs to be removed after construction, the protective function of the dustproof sleeve 240 ensures that the threaded connection between the pre-embedded screw 250 and the tapered sleeve 220 remains smooth during removal, significantly reducing disassembly difficulty and minimizing component wear caused by thread damage. This improves the reusability of the pre-embedded component 200 and reduces construction and maintenance costs.
[0055] See Figures 1 to 3 In some embodiments, the adjustable support assembly 300 further includes a support nut 350, which is fixedly connected to the second plate 112, and the support screw 310 is screwed to the support nut 350.
[0056] In this embodiment, by adding a support nut 350 fixedly connected to the second plate 112, the support screw 310 is screwed to the support nut 350, forming a stable threaded transmission pair. This design enhances the connection reliability between the support screw 310 and the second plate 112, preventing the support screw 310 from loosening or falling off under load. Simultaneously, the preload of the support nut 350 improves the accuracy of height adjustment and the rigidity of the support structure, ensuring that the load of the composite floor slab 10 can be stably transmitted to the support base 100. Furthermore, it facilitates quick adjustment of the support height during construction, improving the operational convenience and reusability of the support structure.
[0057] See Figure 3 In some embodiments, a washer 401 is provided between the head of the removable bolt 230 and the first plate 111, and the shank of the removable bolt 230 passes through the washer 401.
[0058] In this embodiment, the transitional support of the washer 401 can evenly distribute the local pressure of the head of the removable bolt 230 on the first plate 111, preventing the first plate 111 from deforming or breaking due to stress concentration. At the same time, the washer 401 can fill the tiny gap between the head of the removable bolt 230 and the surface of the first plate 111, enhancing the tightness of the connection, preventing the removable bolt 230 from tilting under force, improving the reliability and stability of the connection between the support base 100 and the wall 20, and facilitating quick installation and disassembly during construction.
[0059] See Figures 1 to 3 In some embodiments, the bottom outer contour of the support screw 310 is a regular hexagon. This facilitates quick clamping and rotation using standard tools such as wrenches and sockets during construction, significantly improving the operational efficiency of adjusting the support height and avoiding adjustment difficulties caused by slippage at the bottom of the support screw 310.
[0060] See Figure 3 In some embodiments, the anchor 210 includes a pre-embedded rod 211, which is screwed to a pre-embedded screw 250, with the centerline of the pre-embedded rod 211 perpendicular to the axis of the pre-embedded screw 250. Thus, the pre-embedded rod 211 and the pre-embedded screw 250 are screwed together to form a T-shaped anchoring structure, enhancing the anchoring strength between the pre-embedded component 200 and the wall 20.
[0061] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.
Claims
1. A composite floor slab support structure, the composite floor slab comprising a precast slab and a cast-in-place layer located on the precast slab, the precast slab being disposed on the top of a wall; Its features are, The supporting structure includes: The support base includes an L-shaped support plate, which includes a first plate and a second plate that are perpendicular to each other and fixedly connected. One surface of the first plate abuts against the wall. The first plate has a first through hole, and the second plate has a screw-in through hole. The embedded component includes a detachable bolt, an anchor embedded in the wall, a conical sleeve, and a pre-embedded screw rod. One end of the pre-embedded screw rod is connected to the anchor, and the other end of the pre-embedded screw rod is screwed to the small-diameter end of the conical sleeve. The large-diameter end face of the conical sleeve is parallel to the wall surface. The shank of the detachable bolt is screwed to the large-diameter end of the conical sleeve. The shank of the detachable bolt passes through the first through hole, and the head of the detachable bolt abuts against the other surface of the first plate. An adjustable support assembly includes a support screw, which is screwed to the second plate, and the top end of the support screw abuts against the bottom surface of the precast slab.
2. The composite floor slab support structure as described in claim 1, characterized in that, The adjustable support assembly further includes a support plate, the bottom surface of which is connected to the top end of the support screw, and the top surface of which abuts against the precast slab.
3. The composite floor slab support structure as described in claim 2, characterized in that, The adjustable support assembly also includes a top block, which is fixedly connected to the bottom surface of the support plate, and the support screw abuts against the top block.
4. The composite floor slab support structure as described in claim 3, characterized in that, The adjustable support assembly also includes a guide seat, which is fixedly connected to the top block. The guide seat has a guide hole, and the support screw passes through the guide hole.
5. The composite floor slab support structure as described in claim 1, characterized in that, The support base also includes a reinforcing plate, which is fixedly connected between the first plate and the second plate.
6. The composite floor slab support structure as described in claim 1, characterized in that, The pre-embedded component also includes a dustproof sleeve, which is screwed to the pre-embedded screw and abuts against the end face of the tapered sleeve near the anchor.
7. The composite floor slab support structure as described in claim 1, characterized in that, The adjustable support assembly also includes a support nut, which is fixedly connected to the second plate, and the support screw is screwed to the support nut.
8. The composite floor slab support structure as described in claim 1, characterized in that, A washer is provided between the head of the removable bolt and the first plate, and the shank of the removable bolt passes through the washer.
9. The composite floor slab support structure as described in claim 1, characterized in that, The bottom outer contour of the support screw is a regular hexagon.
10. The composite floor slab support structure as described in claim 1, characterized in that, The anchor includes a pre-embedded rod, which is screwed to the pre-embedded screw, and the centerline of the pre-embedded rod is perpendicular to the axis of the pre-embedded screw.