Energy-saving dense rib cavity floor slab

Abstract

The utility model provides an energy-saving dense rib cavity floor slab, which relates to the technical field of building structures, and comprises a bottom template, criss-cross reinforcement cages are fixed above the bottom template, placing spaces are formed among the reinforcement cages, and threaded rods are fixed in the placing spaces; the core molds penetrate through the threaded rod and are arranged in the placement space, a gland is connected to the threaded rod, a transverse rib is arranged at the bottom of the gland, and the transverse rib fixes the transversely arranged core molds in the placement space in a pressing mode through downward pressure applied by the gland; and concrete is poured above the bottom formwork and submerges the top ends of the threaded rods, and the dense rib cavity floor slab is formed after the concrete is formed. According to the design, the transverse ribs are pressed downwards through the glands, the core molds are pressed downwards through the transverse ribs, pressing and accurate positioning of the core molds are achieved, the phenomenon that the thickness of rib beams is uneven due to the fact that the core molds are pushed to move in the concrete pouring process can be effectively avoided, meanwhile, the transverse ribs can limit the tops of the core molds, and the core molds are prevented from floating upwards in the concrete pouring process.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to an energy-saving ribbed hollow floor slab. Background Technology

[0002] Cast-in-place hollow concrete slabs are created by using core molds arranged in a specific pattern to replace a portion of the concrete in a solid slab, forming cavities or lightweight sandwich structures. This results in a spatial honeycomb-like load-bearing structure with cavities and dense ribs. The advantages of cast-in-place hollow concrete slabs include: reduced structural weight, material savings, and lower overall construction costs; good sound insulation, heat insulation, and thermal insulation due to the internal sandwich structure; and good seismic performance.

[0003] In traditional construction techniques, the positioning of the core mold relies on the space created by the binding of the reinforcing cage, which requires extremely high binding precision. When manually binding the reinforcing cage, errors inevitably occur in the spacing between the transverse and longitudinal reinforcing bars. The core mold is a hollow structure and relatively lightweight. During the pouring process, the flowing concrete will exert a pushing force on the sides of the core mold. Once a gap exists between the core mold and the reinforcing cage, the core mold is very prone to sliding due to the force.

[0004] Displacement of the mandrel can cause inconsistent spans in the subsequently poured concrete rib beams. Increased spans in some beams result in uneven thickness, severely impacting project quality. Furthermore, due to the mandrel's light weight, if the top is not restrained during concrete pouring, it may float, also posing a quality risk to the final structure. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes an energy-saving ribbed hollow floor slab.

[0006] The technical solution to the technical problem solved by this utility model is as follows:

[0007] This utility model proposes an energy-saving ribbed hollow floor slab, including a bottom formwork with several sets of crisscrossing steel cages fixed on top, forming several placement spaces between the steel cages; a threaded rod fixed in the placement space; a core mold passing through the threaded rod and placed in the placement space; a pressure cap threaded onto the threaded rod; and a transverse rib provided at the bottom of the pressure cap. The transverse rib presses and fixes the several sets of transversely arranged core molds in the placement space by the downward pressure applied by the pressure cap. Concrete is poured above the bottom formwork, covering the top of the threaded rod, and the ribbed hollow floor slab is formed after the concrete is formed.

[0008] Preferably, the upper part of the threaded rod has a movable groove, and the transverse rib can freely pass through the movable groove and press the core mold below through the pressure cap.

[0009] Preferably, a vertically arranged insulation board is placed between the horizontal rib and the core mold, and the insulation board presses and fixes the vertically arranged core mold in the placement space.

[0010] Preferably, both the placement space and the core mold are rectangular in shape, and a through hole is provided at the center of the core mold for the threaded rod to pass through.

[0011] Preferably, the reinforcing cage has a rectangular structure, with the horizontal and vertical reinforcing cages arranged vertically and vertically, such that the top of the vertical reinforcing cage protrudes beyond the top of the horizontal reinforcing cage.

[0012] Preferably, several sets of the insulation boards are positioned between the vertical steel cage and the threaded rod.

[0013] Preferably, the insulation board is made of rigid polyurethane material.

[0014] Preferably, the core mold is made of any one of plastic, metal or composite concrete, and has a hollow internal structure.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] 1. In this utility model, a threaded rod is fixed within the placement space formed by the reinforcing cage, and the core mold is placed in the placement space through the threaded rod. The horizontal reinforcement is pressed down by the pressure cap connected to the threaded rod, and the horizontal reinforcement presses down on the core mold, thereby achieving precise positioning of the core mold. This can effectively prevent the core mold from moving during the concrete pouring process, which would cause uneven thickness of the rib beams. At the same time, the horizontal reinforcement can also limit the top of the core mold, preventing the core mold from floating up during the concrete pouring process.

[0017] 2. In this utility model, an insulation board is set between the horizontal ribs and the core mold. The insulation board is arranged vertically to realize the positioning and integration of the vertical core mold, so as to form a whole and improve the stability of the vertical structure. In addition, the teeth-like effect of the horizontal ribs on the insulation board can also make the insulation board a whole in the horizontal direction, thereby enhancing the stability of the horizontal structure.

[0018] 3. In this utility model, the design of the insulation board and the horizontal reinforcement working together replaces the cumbersome steps of tying the steel mesh at the top in the traditional way. The insulation board is placed between the threaded rod and the vertical steel cage in advance, and the horizontal reinforcement is inserted into the movable groove. The positioning of the two can be achieved by screwing on the pressure cap. This replaces the function of the traditional steel mesh, simplifies the construction structure, reduces the construction difficulty, and greatly improves the convenience of installation. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the vertical steel cage and core mold in this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of a single core mold and a reinforcing cage in this utility model.

[0023] Figure 4 for Figure 1 The right view in the image.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Bottom formwork; 2. Reinforcing cage; 3. Placement space; 4. Threaded rod; 5. Core mold; 6. Pressure cap; 7. Horizontal reinforcement; 8. Movable groove; 9. Insulation board; 10. Perforation. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] As attached Figures 1 to 4As shown, this embodiment proposes an energy-saving ribbed hollow floor slab, which includes a bottom template 1. Several sets of crisscrossing steel cages 2 are fixed above the bottom template 1. The diameter of the steel cages 2 forms several placement spaces 3. Threaded rods 4 are fixed in the placement spaces 3 by welding or other means. It also includes a core mold 5, which passes through the threaded rods 4 and is placed in the placement spaces 3. A pressure cap 6 is threadedly connected to the top of the threaded rods 4. A transverse rib 7 is provided at the bottom of the pressure cap 6. When the pressure cap 6 is screwed onto the threaded rods 4, the pressure rod generates a downward force. The transverse rib 7 then presses and fixes the several sets of transversely arranged core molds 5 in the placement spaces 3 by the downward pressure applied by the pressure cap 6.

[0030] Furthermore, side formwork is fixed around the bottom formwork 1, and concrete is poured above the bottom formwork 1, with the concrete covering the top of the threaded rod 4. After the concrete is formed, a ribbed hollow floor slab is formed.

[0031] In traditional construction techniques, the positioning of the core mold 5 relies on the placement space 3 formed by the binding of the reinforcing cage 2, which requires extremely high binding precision. When manually binding the reinforcing cage 2, errors inevitably occur in the spacing between the transverse and longitudinal reinforcing cages 2. The core mold 5 is a hollow structure and relatively lightweight. During the pouring process, the flowing concrete will exert a horizontal thrust on the sides of the core mold 5. Once a gap exists between the core mold 5 and the reinforcing cage 2, the core mold 5 is very prone to sliding due to the force.

[0032] Displacement of the core mold 5 will cause inconsistent spans in the subsequently poured concrete rib beams. Increased spans in some beams will result in uneven thickness, severely impacting project quality. Furthermore, due to its lightweight nature, if the top of the core mold 5 is not restrained during concrete pouring, it will float upwards, also posing a quality risk to the final structure.

[0033] The energy-saving ribbed hollow slab proposed in this embodiment, during construction, first forms a placement space 3 by binding the reinforcing cage 2, which is used to place individual core molds 5 for initial positioning. Then, a threaded rod 4 is fixed within the placement space 3. The core mold 5 passes through the threaded rod 4 and is positioned again. By screwing on the pressure cap 6 on the threaded rod 4, the pressure cap 6 presses down on the transverse reinforcing bars 7, which in turn press down on the core mold 5, achieving precise positioning of the core mold 5 through this pressure. This avoids uneven thickness of the ribs formed during concrete pouring. The structure of the transverse reinforcing bars 7 also limits the top of the core mold 5, preventing it from floating during concrete pouring. This ensures that the final quality of the building meets design standards.

[0034] To facilitate the installation of the horizontal rib 7 and prevent its displacement during the pressing process of the pressure cap 6, a movable groove 8 is provided on the upper part of the threaded rod 4. The horizontal rib 7 can freely pass through the movable groove 8 and is held in place by the pressure cap 6 against the mandrel 5 below. In this design, the horizontal rib 7 is positioned by the movable groove 8, effectively preventing displacement of the horizontal rib 7 due to accidental contact before the construction step of tightening the pressure cap 6 to press the horizontal rib 7.

[0035] In some embodiments, a vertically arranged insulation board 9 is placed between the horizontal ribs 7 and the core mold 5, and the insulation board 9 presses and fixes the vertically arranged core mold 5 within the placement space 3. The hollow structure of the core mold 5 can play a certain role in sound insulation and heat insulation, and can effectively block the transmission of sound and heat; on this basis, the insulation board 9 is laid on top of it. The insulation board 9 is preferably made of rigid polyurethane material, which, together with the core mold 5, can achieve a better heat insulation effect and further prevent heat from being transferred through the floor slab.

[0036] Furthermore, by placing a rigid insulation board 9 between the horizontal ribs 7 and the core mold 5, the vertical core mold 5 can be positioned and integrated, forming a whole and significantly improving the stability of the vertical structure. In addition, the pressing effect of the horizontal ribs 7 on the insulation board 9 makes the insulation board 9 a whole in the horizontal direction, enhancing the stability of the horizontal structure.

[0037] The combination of the horizontal ribs 7 and the insulation board 9 replaces the function of the top-tied steel mesh, reduces the cost of laying additional steel mesh, simplifies the construction structure, reduces construction difficulty, and greatly improves the ease of installation.

[0038] In some embodiments, both the placement space 3 and the core mold 5 are rectangular in shape, and the core mold 5 has a through hole 10 in the middle for the threaded rod 4 to pass through, so as to achieve the initial positioning of the core mold 5.

[0039] Accordingly, in conjunction with the appendix Figure 1 and Figure 4 As shown, the reinforcing cage 2 has a rectangular structure, with the horizontal and vertical reinforcing cages 2 arranged in an alternating pattern, so that the top of the vertical reinforcing cage 2 protrudes beyond the top of the horizontal reinforcing cage 2. This allows several sets of insulation boards 9 to be positioned between the vertical reinforcing cage 2 and the threaded rod 4, and the protruding parts are used to quickly lay and position the insulation boards 9.

[0040] In some embodiments, the core mold 5 is made of any one of plastic, metal, or composite concrete, and has a hollow structure inside. The hollow structure can greatly reduce the weight of the core mold 5 itself, thereby reducing the overall weight of the floor slab, which is especially beneficial to the load-bearing capacity of high-rise buildings; the air layer formed inside the hollow structure can play a role in sound insulation and heat insulation to a certain extent.

[0041] The following are the specific construction steps for energy-saving ribbed hollow floor slabs:

[0042] S1: Pre-build the bottom formwork 1 and side formwork, and tie the steel cage 2 on the bottom formwork 1 so that the steel cage 2 is crisscrossed to form an internal grid-like placement space 3;

[0043] S2: The threaded rod 4 is fixed in the placement space 3. The threaded rod 4 is fixed above the bottom template 1 by welding, so that the threaded rod 4 is located in the center of the placement space 3.

[0044] S3: After passing the prefabricated core mold 5 with the perforation 10 through the threaded rod 4, place it in the corresponding placement space 3;

[0045] S4: Lay the insulation board 9 vertically above the core mold 5, and position the insulation board 9 between the vertical steel cage 2 and the threaded rod 4, so that the insulation board 9 is initially positioned.

[0046] S5: The transverse ribs 7 are passed through the transverse threaded rods 4 respectively, and then the pressure cap 6 is threadedly connected above the threaded rods 4. As the pressure cap 6 is screwed, the pressure cap 6 applies downward pressure to the transverse ribs 7 and the insulation board 9 below it, and further makes the transverse ribs 7 and the insulation board 9 cooperate to press and fix the core mold 5 arranged in a grid pattern.

[0047] S6: Pour concrete between the bottom formwork 1 and the side formwork, so that the concrete covers the top of the threaded rod 4. After the concrete is formed, an energy-saving ribbed hollow floor slab is formed.

[0048] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. An energy-saving ribbed hollow floor slab, characterized in that, include: The bottom template (1) has several sets of crisscrossing steel cages (2) fixed on top, and several sets of placement spaces (3) are formed between the steel cages (2). The threaded rod (4) is fixed in the placement space (3); The core mold (5) passes through the threaded rod (4) and is placed in the placement space (3). The threaded rod (4) is threaded with a pressure cap (6). The bottom of the pressure cap (6) is provided with a horizontal rib (7). The horizontal rib (7) presses and fixes several sets of horizontally arranged core molds (5) in the placement space (3) by the downward pressure applied by the pressure cap (6). Concrete is poured above the bottom template (1), covering the top of the threaded rod (4). After the concrete is formed, a densely ribbed hollow floor slab is formed.

2. The energy-saving ribbed hollow floor slab according to claim 1, characterized in that, The threaded rod (4) has a movable groove (8) on its upper part. The transverse rib (7) can freely pass through the movable groove (8) and press the core mold (5) below through the pressure cap (6).

3. The energy-saving ribbed hollow floor slab according to claim 1, characterized in that, A vertically arranged insulation board (9) is placed between the horizontal rib (7) and the core mold (5), and the insulation board (9) presses and fixes the vertically arranged core mold (5) in the placement space (3).

4. The energy-saving ribbed hollow floor slab according to claim 1, characterized in that, The placement space (3) and the core mold (5) are both rectangular in shape. A through hole (10) is provided at the center of the core mold (5) for threaded rod (4) to pass through.

5. The energy-saving ribbed hollow floor slab according to claim 3, characterized in that, The steel cage (2) has a rectangular structure, and the steel cages (2) arranged horizontally and vertically are distributed vertically, so that the top of the vertical steel cage (2) protrudes from the top of the horizontal steel cage (2).

6. The energy-saving ribbed hollow floor slab according to claim 5, characterized in that, Several sets of insulation boards (9) are respectively positioned between the vertical steel cage (2) and the threaded rod (4).

7. The energy-saving ribbed hollow floor slab according to claim 3, characterized in that, The insulation board (9) is made of rigid polyurethane material.

8. The energy-saving ribbed hollow floor slab according to claim 1, characterized in that, The core mold (5) is made of any one of the following materials: plastic, metal or composite concrete, and has a hollow interior.

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