Efficient and energy-saving prestressed hollow slab

Abstract

The utility model relates to the technical field of hollow slabs, in particular to an efficient and energy-saving prestressed hollow slab which comprises a hollow slab body formed by pouring concrete, a plurality of through holes penetrating through the hollow slab body, and a plurality of reinforcing ribs arranged on the inner walls of the two ends of each through hole in an annular array mode. Stress concentration is uniformly reinforced and dispersed, the compression resistance and shear resistance of the edges of the through holes are improved, a plurality of third reinforcing ribs are arranged on the outer walls of the through holes in an annular array mode, and the third reinforcing ribs are embedded in the hollow slab, so that the structural strength of the peripheries of the through holes is further enhanced, and crack expansion is prevented; the corner reinforcing plates are embedded in the edges of the four corners of the two ends of the hollow slab, the corner reinforcing plates are formed by pouring a plurality of steel bars in a staggered mode, and the bearing capacity of the corners of the hollow slab is greatly enhanced; the reinforcing plates can effectively prevent the corners from cracking or being damaged when the corners are subjected to external force.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow core slab technical field especially for efficient energy -conserving prestressed hollow core slab. BACKGROUND

[0002] In the past, industrial plants mostly used solid concrete slabs or other heavy building materials. These materials have certain bearing capacity and stability, but also have many limitations. For example, the solid concrete slab has a large self-weight, which not only increases the difficulty of transportation and installation, but also may cause insufficient bearing capacity of the foundation. In addition, traditional building materials perform poorly in terms of heat and sound insulation, and are difficult to meet the requirements of modern industrial plants for comfort and energy efficiency.

[0003] As a new type of building material, prestressed hollow core slab greatly reduces the self-weight due to its hollow design, making transportation and installation more convenient, improving material utilization, and reducing production costs. Secondly, prestressed hollow core slab makes the floor slab less likely to crack when bearing working load, improving the durability and bearing capacity of the structure. In addition, it also has excellent heat and sound insulation performance, which helps to reduce the energy consumption of industrial plants and improve the comfort of employees.

[0004] Chinese patent CN202420454161.7 with publication number high sound insulation type prefabricated prestressed hollow core slab, through sound absorbing sponge and sound insulation layer, sound absorbing sponge and support pipe cooperate, can effectively reduce the vibration transmission of the support pipe inside the prestressed hollow core slab main body, so that the inside is not easy to produce echo, thereby reducing the degree of indoor space affected by external noise, greatly increasing the sound insulation effect of the prestressed hollow core slab main body, the sound insulation layer is hollow inside, reducing the propagation speed and decibel of noise. However, the hollow core slab has limited bearing capacity and is not easy to assemble and install, which may crack and damage easily and increase the difficulty of construction. Therefore, the prestressed hollow core slab with high efficiency and energy saving is provided. SUMMARY

[0005] The main purpose of the utility model is to provide a prestressed hollow core slab with high efficiency and energy saving to solve the problem of cracking and damage of the hollow core slab with limited bearing capacity and difficult assembly and installation in related technologies.

[0006] In order to achieve the above object, according to one aspect of the present application, an efficient energy-saving prestressed hollow slab is provided, which comprises a hollow slab formed by pouring concrete, a plurality of through holes are formed through the hollow slab, a plurality of reinforcing bars are arranged in a ring array on the inner wall of both ends of the through hole, a plurality of third reinforcing bars are arranged in a ring array on the outer wall of the through hole, and the third reinforcing bars are embedded in the hollow slab, a corner reinforcing plate is embedded at the four corner edges of both ends of the hollow slab, the corner reinforcing plate is formed by pouring a plurality of reinforcing bars in a staggered manner, and two adjacent hollow slabs can be connected.

[0007] Further, the through hole is hexagonal, and each third reinforcing bar is located at the center of one side of the through hole.

[0008] Further, a plurality of first reinforcing bars are arranged in a ring array on both ends of the inner wall of the through hole, and one end of the first reinforcing bar is in communication with each other.

[0009] Further, a plurality of second reinforcing bars are arranged in a ring array on both ends of the inner wall of the through hole, the second reinforcing bar is located inside the first reinforcing bar, and each third reinforcing bar is located between two adjacent second reinforcing bars.

[0010] Further, a heat insulation cavity is formed around the through hole of the hollow slab, and the heat insulation cavity is filled with heat insulation cotton.

[0011] Further, a plurality of grooves are symmetrically formed on the outer wall of the hollow slab.

[0012] Further, the connecting plate is connected to both sides of the hollow slab, a slot is formed on one side of the connecting plate, and a plug is inserted into the slot.

[0013] Further, the plug is inserted into the slot on one side, and when two adjacent hollow slabs are connected, the plug is inserted into another slot on the other side.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. In the efficient energy-saving prestressed hollow slab, reinforcing bars are arranged around the through hole, the overall stiffness and carrying capacity of the hollow slab are effectively enhanced through the design of multi-layer and multi-directional reinforcing bars, the first reinforcing bar and the second reinforcing bar form a double-layer reinforcing bar structure at both ends of the inner wall of the through hole, the stress concentration is uniformly reinforced and dispersed, and the compressive and shearing capacity of the edge of the through hole is improved; the third reinforcing bar is located between two adjacent second reinforcing bars, further enhancing the structural strength of the periphery of the through hole and preventing crack propagation.

[0016] 2. In the high-efficiency and energy-saving prestressed hollow slab, the corner reinforcing plate is formed by interlaced pouring of a plurality of steel bars, which greatly enhances the load bearing capacity of the corners of the hollow slab. Since the corner area is often a place where stress is concentrated, the presence of the reinforcing plate can effectively prevent the corners from cracking or breaking when subjected to external force. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the prestressed hollow slab in the preferred embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the cross-sectional structure of the hollow slab in the preferred embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the overall structure of the corner reinforcing plate in the preferred embodiment of the present application Figure 2 is an enlarged schematic diagram of the structure at position A in the preferred embodiment of the present application;

[0020] Figure 4 is a schematic diagram of the overall structure of the corner reinforcing plate in the preferred embodiment of the present application;

[0021] Figure 5 is a schematic diagram of the planar structure of the hollow slab in the preferred embodiment of the present application;

[0022] Figure 6 is a schematic diagram of the overall structure of the corner reinforcing plate in the preferred embodiment of the present application Figure 5 is an enlarged schematic diagram of the structure at position B in the preferred embodiment of the present application;

[0023] Figure 7 is a schematic diagram of the overall structure of the corner reinforcing plate in the preferred embodiment of the present application;

[0024] Figure 8 is a schematic diagram of the overall structure of the corner reinforcing plate in the preferred embodiment of the present application Figure 7 is an enlarged schematic diagram of the structure at position C in the preferred embodiment of the present application.

[0025] FIGURE DESCRIPTION

[0026] 1. Hollow slab; 11. Through hole; 12. First reinforcing rib; 13. Second reinforcing rib; 14. Corner reinforcing plate; 15. Groove; 16. Connecting plate; 161. Insert slot; 162. Insert strip; 17. Heat insulation cavity; 18. Third reinforcing rib. DETAILED DESCRIPTION

[0027] To further illustrate the technical means and effects adopted by the present application to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the present application will be described in detail below in combination with the drawings and preferred embodiments.

[0028] Please refer to Figures 1-8The embodiment is shown, aiming at providing a high-efficiency and energy-saving prestressed hollow slab, comprising a hollow slab 1 made of concrete pouring, a plurality of through holes 11 are arranged through the hollow slab 1, a plurality of reinforcing bars are arranged in a ring array on the inner walls of both ends of the through hole 11, a plurality of third reinforcing bars 18 are arranged in a ring array on the outer wall of the through hole 11, and the third reinforcing bars 18 are embedded in the hollow slab 1, and the corner reinforcing plates 14 are embedded at the four corners of both ends of the hollow slab 1, the corner reinforcing plates 14 are made of a plurality of reinforcing bars poured in a staggered manner, and two adjacent hollow slabs 1 can be connected.

[0029] The through hole 11 is hexagonal, which can reduce the amount of concrete, reduce the self weight, improve the material utilization rate, ensure the quality stability of the hollow slab 1, and effectively enhance the compression and shear capacity of the region, prevent the edge of the through hole 11 from cracking due to stress concentration, and improve the overall load bearing capacity of the structure.

[0030] A plurality of first reinforcing bars 12 are arranged in a ring array on the inner walls of both ends of the through hole 11, which can ensure that each direction of the inner wall of the through hole 11 is uniformly reinforced, one end of the first reinforcing bar 12 is communicated with each other to form a closed overall structure, and the overall rigidity is enhanced to prevent local damage.

[0031] A plurality of second reinforcing bars 13 are arranged in a ring array on both ends of the inner wall of the through hole 11, the second reinforcing bars 13 are located inside the first reinforcing bars 12 to form a double-layer reinforcing bar structure, since the both ends of the inner wall of the through hole 11 are the key stress areas, especially under bending or shear load, stress concentration is easy to occur, therefore, the first reinforcing bars 12 and the second reinforcing bars 13 are arranged only on both ends of the inner wall of the through hole 11, effectively dispersing the stress of the region, enhancing the load bearing capacity of both ends of the through hole 11, and ensuring the stability of the hollow slab 1 under complex working conditions; the middle part of the through hole 11 is usually under small stress, so it does not need to be additionally provided with reinforcing bars, reducing unnecessary material consumption and reducing manufacturing cost.

[0032] And each third reinforcing bar 18 is located between two adjacent second reinforcing bars 13 to prevent cracks from occurring and expanding along the weak area between the second reinforcing bars 13, the length of the third reinforcing bar 18 is less than but close to the length of the through hole 11, which reduces the material consumption while ensuring sufficient load bearing capacity.

[0033] The hollow slab 1 is provided with a heat insulation cavity 17 around the through hole 11, forming an effective heat insulation barrier. The heat insulation cavity 17 is filled with heat insulation cotton, which is a high-performance thermal insulation material with extremely low thermal conductivity, effectively blocking the heat transfer path, reducing the heat transfer to the inside of the hollow slab 1, and improving the overall heat insulation effect. In places such as industrial plants that need to control indoor temperature, the presence of the heat insulation cavity 17 significantly reduces the impact of external environmental temperature on the indoor environment, helping to maintain a stable and comfortable working environment. At the same time, the heat insulation cotton also has a certain sound absorption effect, which can reduce noise transmission and further improve the indoor environment quality.

[0034] The hollow slab 1 is provided with a heat insulation cavity 17 around the through hole 11, forming an effective heat insulation barrier. The heat insulation cavity 17 is filled with heat insulation cotton, which is a high-performance thermal insulation material with extremely low thermal conductivity, effectively blocking the heat transfer path, reducing the heat transfer to the inside of the hollow slab 1, and improving the overall heat insulation effect. In places such as industrial plants that need to control indoor temperature, the presence of the heat insulation cavity 17 significantly reduces the impact of external environmental temperature on the indoor environment, helping to maintain a stable and comfortable working environment. At the same time, the heat insulation cotton also has a certain sound absorption effect, which can reduce noise transmission and further improve the indoor environment quality.

[0035] The hollow slab 1 is provided with a heat insulation cavity 17 around the through hole 11, forming an effective heat insulation barrier. The heat insulation cavity 17 is filled with heat insulation cotton, which is a high-performance thermal insulation material with extremely low thermal conductivity, effectively blocking the heat transfer path, reducing the heat transfer to the inside of the hollow slab 1, and improving the overall heat insulation effect. In places such as industrial plants that need to control indoor temperature, the presence of the heat insulation cavity 17 significantly reduces the impact of external environmental temperature on the indoor environment, helping to maintain a stable and comfortable working environment. At the same time, the heat insulation cotton also has a certain sound absorption effect, which can reduce noise transmission and further improve the indoor environment quality.

[0036] The hollow slab 1 is provided with a heat insulation cavity 17 around the through hole 11, forming an effective heat insulation barrier. The heat insulation cavity 17 is filled with heat insulation cotton, which is a high-performance thermal insulation material with extremely low thermal conductivity, effectively blocking the heat transfer path, reducing the heat transfer to the inside of the hollow slab 1, and improving the overall heat insulation effect. In places such as industrial plants that need to control indoor temperature, the presence of the heat insulation cavity 17 significantly reduces the impact of external environmental temperature on the indoor environment, helping to maintain a stable and comfortable working environment. At the same time, the heat insulation cotton also has a certain sound absorption effect, which can reduce noise transmission and further improve the indoor environment quality.

[0037] The hollow slab 1 is a high-efficiency energy-saving building material, has the characteristics of light weight and high strength, and has the corner reinforcing plate 14 embedded at the two ends and the four corner edges of the hollow slab 1. The corner reinforcing plate 14 is formed by pouring a plurality of steel bars in a staggered manner, which not only forms a strong internal support structure, but also effectively disperses the concentrated stress that may be borne by the corner area. The staggered arrangement of the steel bars also increases the bonding force between the corner reinforcing plate 14 and the main body of the hollow slab 1, ensuring that they can work together to resist deformation and damage under stress.

[0038] In specific use, the special mold is made according to the design drawing, the position of the heat insulation cavity 17 is reserved in the mold, and the heat insulation cotton is filled, then the concrete is poured into the mold, the first reinforcing rib 12 and the second reinforcing rib 13 are arranged in an annular array at both ends of the inner wall of the through hole 11, the third reinforcing rib 18 is installed between the adjacent two second reinforcing ribs 13, the corner reinforcing plate 14 is embedded at the two ends and the four corner edges of the hollow slab 1, when a plurality of hollow slabs 1 need to be assembled, the side walls of the connecting plates 16 of the adjacent two hollow slabs 1 are attached, the two insertion grooves 161 are aligned, then the insertion strip 162 is inserted and arranged in the insertion groove 161, finally the hoisting equipment is used to hoist the hollow slab 1 to the specified position.

[0039] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the present application.

Claims

1. A high-efficiency energy-saving prestressed hollow slab, comprising a hollow slab (1) formed by pouring concrete, a plurality of through holes (11) being formed through the hollow slab (1), characterized in that, The inner wall of the through hole (11) is provided with a plurality of reinforcing ribs in annular array at both ends, the outer wall of the through hole (11) is provided with a plurality of third reinforcing ribs (18) in annular array, and the third reinforcing ribs (18) are embedded in the hollow plate (1); the four corner edges of both ends of the hollow plate (1) are embedded with corner reinforcing plates (14); the corner reinforcing plates (14) are formed by pouring a plurality of reinforcing bars in a staggered manner; and two adjacent hollow plates (1) can be connected.

2. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 1, wherein, The through hole (11) is hexagonal, and each third reinforcing rib (18) is located at the center of one side of the through hole (11).

3. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 2, characterized in that, The inner wall of the through hole (11) is provided with a plurality of first reinforcing ribs (12) in annular array at both ends, and one end of the first reinforcing rib (12) is communicated with each other.

4. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 3, characterized in that, The inner wall of the through hole (11) is also provided with a plurality of second reinforcing ribs (13) in annular array at both ends, the second reinforcing rib (13) is located inside the first reinforcing rib (12), and each third reinforcing rib (18) is located between two adjacent second reinforcing ribs (13).

5. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 1, wherein The hollow plate (1) is provided with a heat insulation cavity (17) around the through hole (11), and the heat insulation cavity (17) is filled with heat insulation cotton.

6. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 1, wherein The outer wall of the hollow plate (1) is symmetrically provided with a plurality of grooves (15) upward and downward.

7. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 1, wherein Both sides of the hollow plate (1) are connected with a connecting plate (16), one side of the connecting plate (16) is provided with a slot (161), and the slot (161) is inserted with a plug (162).

8. The high-efficiency energy-saving prestressed hollow slab as claimed in claim 7, characterized in that, The plug (162) is inserted into the slot (161) on one side, and when two adjacent hollow plates (1) are connected, the other side of the plug (162) is inserted into another slot (161).

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