Lightweight floor slab with ribs protruding from side face

Abstract

The utility model discloses a lightweight floor slab with ribs exposed from the side surface, which comprises a framework (1) and a concrete slab (2) poured on the framework (1) to form a whole, and is characterized in that the framework (1) comprises a plurality of lower longitudinal ribs (1-1), a plurality of upper longitudinal ribs (1-2), a plurality of rectangular ribs (1-3) and a plurality of foam core plates (1-4); the rectangular ribs (1-3) are distributed side by side in the longitudinal direction, and the two transverse ends of the rectangular ribs (1-3) extend out of the concrete slab (2). And each foam core plate (1-4) is positioned in the concrete plate (2). According to the utility model, the requirements of light weight and high strength can be met, and mechanical occlusion is generated after the end parts of the opposite double-row rectangular ribs are combined and poured between the adjacent floor slabs in the transverse direction during construction, so that the connection strength between the transverse directions is greatly enhanced, cracking can be prevented, the overall structural strength and shock resistance can be greatly improved, and the service life can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to a lightweight floor slab with reinforcements extending from the side surfaces. Background Art

[0002] As the construction industry develops towards a green, environmentally friendly and sustainable direction, prefabricated buildings have gradually become a development trend in the construction industry due to their advantages such as fast construction speed, easy quality control and less on-site pollution.

[0003] Precast floor slabs are prefabricated in factory molds and used as prefabricated components for building assembly. At the construction site, reinforced concrete is poured between adjacent precast floor slabs to form a single, assembled slab. As a key component of prefabricated buildings, precast floor slabs are widely used in the construction industry due to their ease of construction and excellent integrity.

[0004] As the existing conventional prefabricated floor (K), it can be seen Figure 1 It has a skeleton and a concrete slab cast on the skeleton to form an integral body. The skeleton includes a plurality of lower longitudinal bars and a plurality of upper longitudinal bars. Since there are no steel bars protruding from both ends of the precast floor slab (K), concrete is poured between the precast floor slabs during construction and installation (see Figure 2 ) After the installation, the horizontal connection strength between them is insufficient, the horizontal stiffness of the floor slab is insufficient, and the calculation assumptions of the rigid floor slab cannot be met. The integrity and seismic performance of the actual structure will be worse, and there is a risk of cracking or even breaking during later use. Utility Model Content

[0005] The utility model provides a lightweight floor slab with side reinforcement, which can solve the technical problems of existing prefabricated floor slabs without protruding steel bars at both ends, insufficient transverse connection strength between the steel bars, insufficient horizontal stiffness of the floor slabs, poor integrity and seismic resistance, and the risk of cracking or even breaking during later use. In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a lightweight floor slab with side reinforcement, comprising a skeleton and a concrete slab, characterized in that: the skeleton comprises a plurality of lower longitudinal bars, a plurality of upper longitudinal bars, a plurality of rectangular bars and a plurality of foam core boards; each of the rectangular bars is distributed side by side in the longitudinal direction and its transverse ends both protrude outward from the concrete slab; each of the foam core boards is located inside the concrete slab.

[0006] Furthermore, the lower longitudinal reinforcement is prestressed steel bar; and the number of the upper longitudinal reinforcement is less than that of the lower longitudinal reinforcement.

[0007] Furthermore, a plurality of vertical reinforcing ribs are arranged at intervals along the transverse direction of the rectangular ribs; the foam core board is inserted into the rectangular ribs and is limited by two adjacent vertical reinforcing ribs.

[0008] Furthermore, the upper longitudinal reinforcement is made of ordinary steel bars; the rectangular reinforcement is made of ordinary steel bars.

[0009] Furthermore, both ends of the upper longitudinal reinforcement are provided with truss reinforcements; both ends of the concrete slab are provided with grooves and the ends of the upper longitudinal reinforcement and / or the upper part of the truss reinforcement are exposed.

[0010] Furthermore, the skeleton also includes lower transverse reinforcement; the lower transverse reinforcement is located below the truss reinforcement; both ends of the lower transverse reinforcement extend outward from the concrete slab.

[0011] Furthermore, the foam core board is made of foam material.

[0012] Furthermore, the foam core panels are multiple and distributed side by side in the transverse direction.

[0013] Furthermore, a row of concave cavities is provided on each of the two transverse sides of the concrete slab.

[0014] Furthermore, the draft angle of the cavity is 10-30°.

[0015] Beneficial effects of the utility model:

[0016] First, the present invention adds a plurality of rectangular ribs, which are distributed side by side in the longitudinal direction and can directly improve the overall strength of the frame. When a concrete slab formed as an integral part of the frame is cast on the frame, the overall strength of the floor slab of the present invention can be improved, so that it can meet the requirements of high-strength use conditions. Since each foam core board is located inside the concrete, the foam core board is a lightweight material and occupies the internal space of the concrete slab. Therefore, the floor slab of the present invention meets the lightweight requirements and can simultaneously meet the requirements of lightweight and high strength.

[0017] Second, during construction, the floor slabs of the present invention are mechanically engaged by pouring the ends of two rows of rectangular ribs facing each other between the lateral ends of the adjacent floor slabs, which greatly enhances the lateral connection strength between them, prevents cracking, and greatly improves the overall structural strength, seismic resistance and service life.

[0018] Third, during construction, the floor slabs of the present invention are mechanically engaged with each other by two sets of truss bars facing each other at both ends of the longitudinal direction and by pouring and filling concrete in each groove, which greatly enhances the longitudinal connection strength, prevents longitudinal cracking, and greatly improves the overall structural strength, seismic resistance and service life.

[0019] Fourthly, the present invention increases the strength of the transverse ends of the floor slabs by means of the lower transverse ribs of the frame. At the same time, since both ends of the lower transverse ribs extend outwards from the concrete slab, the longitudinal connection strength between adjacent floor slabs can be further enhanced.

[0020] Fifth, the utility model provides a row of concave cavities on each of the transverse sides of the concrete slab. During construction, the two rows of concave cavities facing each other in the transverse direction of two adjacent floor slabs will be filled with concrete to further increase the connection strength of the two adjacent floor slabs. The draft angle of the concave cavities is 10-30 degrees, and the side molds of the mold can be more easily pulled out when the floor slab mold is produced.

[0021] Sixth, when the floor slab of the present invention is poured between the beam or between two adjacent floor slabs, the concrete will simultaneously generate mechanical bite force with the protruding ends of the rectangular transverse reinforcement, the grooves and the frame reinforcement, which greatly enhances the longitudinal, transverse and vertical connection strengths, prevents cracking, and greatly improves the overall structural strength, seismic resistance and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of a floor in the prior art.

[0023] Figure 2 It is a stereoscopic diagram of two floor slabs connected in the prior art after being fixed by pouring concrete in the horizontal direction.

[0024] Figure 3 It is a three-dimensional diagram of a lightweight floor slab with side reinforcement in the utility model.

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 It is a stereoscopic diagram of the horizontal connection between two floor slabs of the utility model before concrete pouring.

[0027] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0028] Figure 7 yes Figure 6 Diagram of the state after concrete pouring.

[0029] Figure 8 This is a front view of the two floor slabs connected in the horizontal direction after concrete pouring.

[0030] Figure 9 yes Figure 8 Enlarged view of point D in the middle.

[0031] Figure 10 It is a three-dimensional diagram of the longitudinal direction between two floor slabs of the utility model when they are connected before concrete pouring.

[0032] Figure 11 yes Figure 10 Enlarged view of point F in the middle.

[0033] Figure 12 yes Figure 11 Diagram of the state after concrete pouring.

[0034] Figure 13 It is a three-dimensional diagram of the skeleton before pouring concrete (excluding the concrete slab).

[0035] Figure 14 yes Figure 13 Enlarged view of point C in the middle.

[0036] Figure 15 This is a distribution diagram of a row of lower longitudinal reinforcement.

[0037] Figure 16 This is a distribution diagram of a row of upper longitudinal reinforcement.

[0038] Figure 17 yes Figure 16 Enlarged view of point E in the middle.

[0039] Figure 18 This is a distribution diagram of a row of rectangular bars.

[0040] Figure 19 This is a distribution diagram of a row of foam core panels.

[0041] Figure 20-21 This is a diagram of the distribution state when a row of foam core panels is inserted into a row of rectangular ribs and the assembly is completed.

[0042] Figure 22 yes Figure 21 A partial enlarged view of .

[0043] Figure 23 This is the distribution diagram of the lower transverse reinforcement. DETAILED DESCRIPTION

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0045] Example 1: See Figure 3-4 A lightweight floor slab with side reinforcement comprises a frame 1 and a concrete slab 2. The concrete slab 2 is a concrete layer that is cast on the frame 1 and formed into an integral body by a mold and has a rectangular shape.

[0046] See Figure 13-14 , wherein the skeleton 1 comprises a plurality of lower longitudinal ribs 1-1, a plurality of upper longitudinal ribs 1-2, a plurality of rectangular ribs 1-3 and a plurality of foam core panels 1-4. wherein each of the rectangular ribs 1-3 is arranged side by side in the longitudinal direction and both ends thereof extend outwards from the concrete slab 2 (see Figure 3-4 ); wherein each of the foam core panels 1-4 is located inside the concrete slab 2.

[0047] See Figure 13-14 In this embodiment, the frame 1 is provided with a plurality of additional rectangular ribs 1-3 on the basis of the existing lower longitudinal ribs 1-1 and upper longitudinal ribs 1-2. The plurality of rectangular ribs 1-3 distributed side by side in the longitudinal direction can directly improve the overall strength of the frame 1 (see Figure 13-14 ), so when the concrete slab 2 formed as one body on the frame 1 is cast on the frame, the overall strength of the floor slab of the present invention can be improved (see Figure 3-4 ), so that it can meet the requirements of high-intensity use conditions.

[0048] Compared with the use of transverse straight steel, this embodiment uses rectangular bars 1-3 to better meet the anchorage length requirements of the steel bars in the post-cast zone, and the protruding ends are bent, and the anchorage length is more than twice that of the straight bars, with greater connection strength and better integrity.

[0049] See also Figure 3 and Figure 13 In this embodiment, the frame 1 has a plurality of foam core panels 1-4, and each of the foam core panels 1-4 is located inside the concrete slab 2. The foam core panels 1-4 are lightweight materials and occupy the interior space of the concrete slab 2, thus enabling the floor slab of the present invention to meet the lightweight requirements.

[0050] See Figure 3-4 In addition, since the rectangular ribs 1-3 are distributed side by side in the longitudinal direction and both transverse ends thereof extend outward from the concrete slab 2.

[0051] See Figure 5-9 During the construction and installation, after pouring concrete between the floor slabs, the adjacent floor slabs are mechanically engaged by pouring the ends of the double rows of rectangular reinforcements facing each other, which greatly enhances the horizontal connection strength and prevents horizontal cracking (see Figure 6-9 ), and can greatly improve the overall structural strength, seismic resistance and service life.

[0052] Furthermore, the upper longitudinal reinforcement 1-2 is made of ordinary steel bars; and the rectangular reinforcement 1-3 is made of ordinary steel bars.

[0053] Preferably, the upper longitudinal reinforcement 1-2 is ribbed steel bars.

[0054] Furthermore, the lower longitudinal reinforcement 1-1 is prestressed steel bar; and the number of the upper longitudinal reinforcement 1-2 is less than that of the lower longitudinal reinforcement 1-1.

[0055] Furthermore, the lower longitudinal ribs 1-1 are provided in plurality and are arranged side by side in the transverse direction; the upper longitudinal ribs 1-2 are provided in plurality and are arranged side by side in the transverse direction; and the foam core panels 1-4 are provided in plurality and are arranged side by side in the transverse direction.

[0056] Furthermore, the foam core panels 1-4 are made of foam material.

[0057] Further, see Figure 20-22 A plurality of vertical reinforcing ribs 1-7 are arranged at intervals along the transverse direction along the upper edge of the rectangular rib 1-3; the foam core board 1-4 is inserted into the rectangular rib 1-3 and is limited by two adjacent vertical reinforcing ribs 1-7.

[0058] Example 2: This example is based on Example 1 and is further improved:

[0059] Further, see Figure 16-17 , both ends of the upper longitudinal reinforcement 1-2 are provided with truss reinforcement 1-5; see Figure 3 The concrete slab 2 is provided with grooves 2-1 at both ends thereof so that the ends of the upper longitudinal reinforcement 1-2 and the upper parts of the truss reinforcement 1-5 are exposed. Specifically, the grooves 2-1 are longitudinal strips. Figure 10-12 In this way, after pouring concrete between the floor slabs during construction and installation, the adjacent floor slabs are mechanically engaged in the longitudinal direction through the two sets of truss bars 1-5 facing each other and the concrete poured and filled in each groove 2-1 (see Figure 10-12 ), which greatly enhances the longitudinal connection strength, prevents longitudinal cracking, and greatly improves the overall structural strength, seismic resistance and service life.

[0060] During construction, additional reinforcement bars may be added between the grooves 2-1 of two adjacent floor slabs of this embodiment to enhance overall performance (e.g., by lap jointing, bundling, or welding). The grooves 2-1 are also designed to facilitate lap jointing and bundling of reinforcement bars (not shown). Preferably, the reinforcement bars may be ribbed bars.

[0061] Specifically, both ends of the reinforcing steel bars are respectively inserted into the grooves 2-1 of the two floor slabs and then connected to the truss bars 1-5 therein (such as overlapped, tied or welded).

[0062] Example 3: This example is based on Example 1 or 2 and is further improved:

[0063] See also Figure 2-3 Furthermore, the skeleton 1 includes a plurality of lower transverse ribs 1-6. These ribs are positioned below the truss ribs 1-5, with both ends of the ribs extending outward from the concrete slab 2. These ribs further increase the strength of the transverse ends of the floor slab. Furthermore, since both ends of the ribs extend outward from the concrete slab 2, the longitudinal connection strength between adjacent floor slabs is further enhanced.

[0064] See Figure 23In this embodiment, the skeleton 1 has a total of four lower transverse ribs 1-6, which are divided into two groups of two, and are located below the truss ribs 1-5 at both ends of the upper longitudinal rib 1-2.

[0065] Example 4: This example is based on Example 1, 2 or 3, and is further improved:

[0066] See also Figure 2-3 Furthermore, the concrete slab 2 is provided with a row of concave cavities 2-2 on each of its two transverse sides. During construction, the two rows of concave cavities 2-2 facing each other in the transverse direction of the two adjacent floor slabs are filled with concrete (see Figure 8-9 ) to further increase the connection strength of the two adjacent floor slabs.

[0067] Further, see Figure 8-9 The draft angle of the cavity 2-2 is 10-30 degrees. In floor slab mold production, the side mold of the mold can be pulled out more easily.

[0068] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A lightweight floor slab with side reinforcement, comprising a frame (1) and a concrete slab (2), characterized in that: The skeleton (1) comprises a plurality of lower longitudinal ribs (1-1), a plurality of upper longitudinal ribs (1-2), a plurality of rectangular ribs (1-3) and a plurality of foam core panels (1-4); each of the rectangular ribs (1-3) is arranged side by side in the longitudinal direction and both ends thereof extend outward from the concrete slab (2); and each of the foam core panels (1-4) is located inside the concrete slab (2).

2. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: The lower longitudinal reinforcement (1-1) is made of prestressed steel bars; and the number of the upper longitudinal reinforcement (1-2) is smaller than that of the lower longitudinal reinforcement (1-1).

3. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: A plurality of vertical reinforcing ribs (1-7) are arranged at intervals along the upper side of the rectangular rib (1-3); The foam core board (1-4) is inserted into the rectangular rib (1-3) and is limited by two adjacent vertical reinforcement ribs (1-7).

4. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: The upper longitudinal reinforcement (1-2) is made of ordinary steel bars; the rectangular reinforcement (1-3) is made of ordinary steel bars.

5. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: Both ends of the upper longitudinal reinforcement (1-2) are provided with truss reinforcements (1-5); Both ends of the concrete slab (2) are provided with grooves (2-1) and can expose the ends of the upper longitudinal reinforcement (1-2) and / or the upper parts of the truss reinforcement (1-5).

6. The lightweight floor slab with side reinforcement according to claim 5, characterized in that: The skeleton (1) further comprises lower transverse ribs (1-6); the lower transverse ribs (1-6) are located below the truss ribs (1-5); both ends of the lower transverse ribs (1-6) extend outwards from the concrete slab (2).

7. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: The foam core plates (1-4) are made of foam material.

8. A lightweight floor slab with side reinforcement according to claim 1 or 7, characterized in that: The foam core panels (1-4) are multiple and are distributed side by side in the transverse direction.

9. The lightweight floor slab with side reinforcement according to claim 1, characterized in that: The concrete slab (2) is provided with a row of concave cavities (2-2) on each of its two transverse sides.

10. The lightweight floor slab with side reinforcement according to claim 9, characterized in that: The draft angle of the cavity (2-2) is 10-30°.

Images