Glass fiber reinforced arched rib pig house leakproof board and manufacturing process thereof

Abstract

A glass fiber ribbed arch-shaped leaky board for pig house and a manufacturing process thereof, comprising a body, the body comprising a panel, horizontal ribs and vertical ribs, the panel being rectangular, the horizontal ribs and the vertical ribs extending along the width and length directions of the panel and being arranged on both sides of the panel, the panel being provided with a plurality of leaky grooves, the length direction of the leaky grooves being arranged along the length direction of the panel, the upper end faces of the panel, the horizontal ribs and the vertical ribs being flush, and the lower end faces of the horizontal ribs and the vertical ribs being lower than the lower end face of the panel; the lower end face of the vertical rib being an arc-shaped face concave upward into an arch shape; the leaky board further comprising a plurality of glass fiber ribs, the glass fiber ribs being arranged in the horizontal ribs and the vertical ribs, the glass fiber ribs in the horizontal ribs and the glass fiber ribs in the vertical ribs being overlapped with each other, and the glass fiber ribs extending along the length direction of the panel being arranged in the panel between the leaky grooves; the material of the body being dry hard concrete. The present application has the advantages of light self weight, corrosion resistance, low cost, simple manufacturing process and short manufacturing period, and belongs to the technical field of auxiliary equipment for breeding industry.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for animal husbandry, specifically to a fiberglass reinforced arched ribbed pigsty slatted panel and its manufacturing process. Background Technology

[0002] In the context of green agriculture, the construction of large-scale modern environmentally friendly and energy-saving pig houses is an inevitable trend in the pig farming industry. As one of the most important waste separation devices in the centralized pig house sewage system, the performance of slatted floors is crucial to the construction and operation of the entire pig house system. At present, traditional reinforced concrete slatted floors are the choice of most centralized pig houses. They have the following three problems: (1) The thickness of the slatted floors is relatively large, resulting in a heavy weight; (2) The amount of steel reinforcement is relatively large, and there is still room for cost optimization; (3) The steel reinforcement is easily corroded in the pig house environment.

[0003] As a composite material, fiber-reinforced composite bars (hereinafter referred to as composite bars) have advantages such as high strength, light weight, and good corrosion resistance. In addition, compared with fiber-reinforced composite panels, fabrics, and meshes, composite bars can be directly applied to concrete components without the need for applying or impregnating with adhesive, which has the advantage of simple construction. Moreover, their surface is often sandblasted, which allows them to bond well with concrete.

[0004] Dry-hard concrete, compared to ordinary concrete, has advantages such as lower fluidity, lower heat of hydration, faster hardening speed, higher early strength, reduced project costs, and shorter construction periods. It is commonly used in precast concrete products and components, hollow concrete blocks, road slabs, and paving bricks. Its advantages include mass production on factory production lines and immediate demolding and curing, resulting in shorter construction periods and cost savings. However, current technology does not utilize this material for the mass production of slatted floor panels in pigsties.

[0005] The key to designing slatted floors for pigsties lies in finding a balance between weight, performance, strength, and cost. Summary of the Invention

[0006] To address the technical problems existing in the prior art, the purpose of this invention is to provide a glass fiber reinforced arched ribbed pigsty slatted panel and its manufacturing process, which maintains good mechanical properties while reducing the panel thickness and replacing steel bars with composite material reinforcement.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A fiberglass reinforced arched ribbed pigsty slatted panel includes a body, which comprises a panel, transverse ribs, and longitudinal ribs. The panel is rectangular. The transverse ribs extend along the width of the panel and are located on both sides of the panel. The longitudinal ribs extend along the length of the panel and are located on both sides of the panel. The panel has multiple slatted grooves, the length of which is along the length of the panel. The upper surfaces of the panel, transverse ribs, and longitudinal ribs are flush, while the lower surfaces of the transverse ribs and longitudinal ribs are lower than the lower surface of the panel. The lower surface of the longitudinal ribs is an arched surface that is concave upwards. The slatted panel also includes multiple fiberglass reinforcing bars. Fiberglass reinforcing bars are installed in both the transverse and longitudinal ribs. The fiberglass reinforcing bars in the transverse and longitudinal ribs overlap each other. Fiberglass reinforcing bars extending along the length of the panel are installed in the panel between the slatted grooves. The material of the body is dry-hardened concrete.

[0009] As a preferred option, the glass fiber reinforcement is divided into rectangular glass fiber reinforcement, strip glass fiber reinforcement, and arc glass fiber reinforcement; a vertically erected rectangular glass fiber reinforcement is set in the transverse rib; a strip glass fiber reinforcement located on the upper side and an arc glass fiber reinforcement located on the lower side are set in the longitudinal rib, and the curvature of the arc glass fiber reinforcement corresponds to the curvature of the lower end face of the longitudinal rib; a strip glass fiber reinforcement is set between adjacent rows of sprue grooves in the panel.

[0010] As a preferred option, the fiberglass reinforcing bars in the longitudinal ribs are connected to the fiberglass reinforcing bars in the transverse ribs by binding.

[0011] As a preferred embodiment, the number of slots is six, arranged in three rows along the width direction and in two columns along the length direction.

[0012] As a preferred option, the surface of the glass fiber reinforcement is sandblasted.

[0013] As a preferred option, the protective layer thickness of the glass fiber reinforcement is ≥15mm.

[0014] As a preferred option, the glass fiber reinforcement has an ultimate tensile strength ≥800MPa and an elastic modulus ≥40GPa.

[0015] As a preferred option, the mechanical properties of dry-hard concrete are compressive strength ≥40MPa, elastic modulus ≥32.5GP, and flexural strength ≥4MPa.

[0016] As a preferred embodiment, the slatted panel is 3000mm long and 600mm wide; the longitudinal rib has a mid-span height of 55mm and a clear rise of 55mm, and the clear span of the arch is 2720mm; the panel height is 55mm and the transverse rib height is 110mm; each slatted groove is 25mm wide and 1280mm long; in the longitudinal rib, the upper and lower glass fiber reinforcements have diameters of 8mm and 12mm respectively; the glass fiber reinforcements in the panel have a diameter of 8mm; the glass fiber reinforcements in the transverse ribs have a diameter of 8mm, forming a rectangle with a length of 500mm and a height of 60mm.

[0017] A manufacturing process for a fiberglass reinforced arched ribbed pigsty slatted panel includes the following steps:

[0018] (1) Prepare the slatted concrete mold and place it on the concrete vibrating table;

[0019] (2) Tie the double-layer glass fiber reinforcement located in the longitudinal ribs, and place it on the mold after tying. The glass fiber reinforcement on the panel can be placed directly.

[0020] (3) Mix dry-hard concrete, pour it into the slatted wall mold, and vibrate it to compact it;

[0021] (4) After the slatted board is demolded, it should be cured by routine maintenance or high-temperature steam curing.

[0022] (5) Install slatted floorboards;

[0023] (6) Fill the gaps at both ends of the slatted board with fine aggregate concrete.

[0024] The principle of this invention is:

[0025] To address the problems of traditional reinforced concrete slatted floors, this paper considers the stress state and the requirements of ultimate limit state and normal limit state of slatted floors in pigsties. Based on the mechanical properties of the selected glass fiber reinforced concrete and dry-hardened concrete, loading tests were conducted on arched ribs, and a finite element model of the arched ribs, validated by experimental data, was established to determine the optimal shape of the arched ribs. Furthermore, based on the planar dimensions of existing conventional pigsty slatted floors, a finite element model of a glass fiber reinforced arched rib slatted floor was established. An optimized form of a novel arched rib pigsty slatted floor using glass fiber reinforced concrete was proposed, along with its manufacturing process.

[0026] The present invention has the following advantages:

[0027] 1. The slatted panel of the present invention, by setting specific structures, materials and dimensions, has the advantages of being lightweight, corrosion resistant, low cost, simple manufacturing process and short production cycle.

[0028] 2. The slatted panel of the present invention makes full use of the characteristics of glass fiber composite reinforcement, which is lightweight, has high tensile strength and good corrosion resistance, and dry-hard concrete, which hardens quickly, demolds quickly and can effectively shorten the production cycle.

[0029] 3. The longitudinal rib thickness of the slatted board is only 55mm at the mid-span, which reduces the self-weight by 20% to 30% compared with the traditional 110mm thick reinforced concrete slatted board. This greatly reduces the self-weight of the pig house structure and is especially suitable for multi-story pig house buildings.

[0030] 4. Replacing steel bars with fiberglass composite reinforcement reduces the overall cost of slatted panels by approximately 20%.

[0031] 5. The fiberglass composite reinforcement used in the slatted floor has a very low tensile strength loss rate in acidic and alkaline environments, and exhibits good corrosion resistance in pigsty environments.

[0032] 6. All production processes are conventional, simple and convenient.

[0033] 7. Arched longitudinal ribs are used to reduce the self-weight of the slatted floor. At the same time, a measure is taken to pour fine aggregate concrete into the gaps at the ends of the slatted floor after it is laid to fix its ends, ensuring that the slatted floor can still meet its load-bearing capacity and deformation requirements under normal stress conditions. Attached Figure Description

[0034] Figure 1 This is a perspective view of the slatted panel of the present invention.

[0035] Figure 2 This is a perspective view of the slatted panel of the present invention from another angle.

[0036] Figure 3 This is a reinforcement diagram of the slatted panel of the present invention.

[0037] Figure 4 yes Figure 3 Sectional view of section 1-1.

[0038] Figure 5 yes Figure 3 Sectional view of section 2-2.

[0039] Figure 6 yes Figure 3 Sectional view of section 3-3.

[0040] Figure 7 yes Figure 3 Sectional view of section 4-4.

[0041] Figure 8 This is a front view of the longitudinal ribs during the design phase, in mm.

[0042] Figure 9 This is a cross-sectional view of the end of the longitudinal rib during the design phase, in mm.

[0043] Figure 10 This is a cross-sectional view of the longitudinal ribs during the design phase, in mm.

[0044] Figure 11 It is a four-point bending load test device.

[0045] Figure 12 It is an end fixing device.

[0046] Figure 13 It is a load-deflection curve diagram based on finite element analysis and experimental results.

[0047] Figure 14 This is a finite element stress cloud diagram of a specimen with a 0mm end gap.

[0048] Figure 15 This is a finite element stress cloud diagram of a specimen with a 2mm end gap.

[0049] Figure 16 This is a finite element stress cloud diagram with a 0mm gap at the end of the specimen.

[0050] Figure 17 This is a finite element stress cloud diagram with a 2mm gap at the end of the specimen.

[0051] 1-Main body, 2-Horizontal part of panel, 3-Horizontal rib, 4-Longitudinal part of panel, 5-Longitudinal rib, 6-Groove.

[0052] B = 600mm, which is the width of the slatted panel.

[0053] L = 3000mm, which is the length of the slatted panel.

[0054] b1 = 25mm, which is the width of the sprue groove; l = 1280mm, which is the length of the sprue groove.

[0055] b2 = 160mm, which is the width of the horizontal portion of the panel; h1 = 55mm, which is the height of the panel.

[0056] b3 = 125mm, which is the width of the longitudinal rib.

[0057] h2 = 110mm, which is the height of the transverse rib and the height of both ends of the longitudinal rib.

[0058] b4 = 140mm, which is the width of the transverse rib.

[0059] b5 = 137.5mm, which is the width of the vertical portion of the panel.

[0060] b6 = 2720mm, which is the net span of the longitudinal rib.

[0061] K1 - 8mm diameter strip fiberglass reinforcement; K2 - 12mm diameter arc-shaped fiberglass reinforcement; K3 - 8mm diameter strip fiberglass reinforcement; K4 - 8mm diameter rectangular fiberglass reinforcement; c is the thickness of the protective layer of the fiberglass reinforcement. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to specific embodiments.

[0063] Example 1

[0064] A fiberglass reinforced arched ribbed pigsty slatted panel includes a body, which comprises a panel, transverse ribs, and longitudinal ribs. The panel is rectangular. The transverse ribs extend along the width of the panel and are located on both sides of the panel. The longitudinal ribs extend along the length of the panel and are located on both sides of the panel. The panel has multiple slatted grooves, the length of which is along the length of the panel. The upper surfaces of the panel, transverse ribs, and longitudinal ribs are flush, while the lower surfaces of the transverse ribs and longitudinal ribs are lower than the lower surface of the panel. The lower surface of the longitudinal ribs is an arched surface that is concave upwards. The slatted panel also includes multiple fiberglass reinforcing bars. Fiberglass reinforcing bars are installed in both the transverse and longitudinal ribs. The fiberglass reinforcing bars in the transverse and longitudinal ribs overlap each other. Fiberglass reinforcing bars extending along the length of the panel are installed in the panel between the slatted grooves. The material of the body is dry-hardened concrete.

[0065] Fiberglass reinforcing bars are divided into rectangular fiberglass reinforcing bars, strip fiberglass reinforcing bars, and arc fiberglass reinforcing bars; a vertically erected rectangular fiberglass reinforcing bar is set in the transverse rib; a strip fiberglass reinforcing bar is set on the upper side and an arc fiberglass reinforcing bar is set on the lower side in the longitudinal rib, and the curvature of the arc fiberglass reinforcing bar corresponds to the curvature of the lower end face of the longitudinal rib; a strip fiberglass reinforcing bar is set between adjacent rows of sprue grooves in the panel.

[0066] The fiberglass reinforcing bars in the longitudinal ribs are connected to the fiberglass reinforcing bars in the transverse ribs by binding.

[0067] There are six slots, arranged in three rows along the width and two columns along the length.

[0068] The surface of the glass fiber reinforcement is sandblasted, which allows it to form a good bond with dry-hardened concrete.

[0069] The protective layer thickness of the fiberglass reinforcement is ≥15mm.

[0070] The ultimate tensile strength of glass fiber reinforcement is ≥800MPa, and the elastic modulus is ≥40GPa.

[0071] The mechanical properties of dry-hard concrete after 28 days of conventional curing are: compressive strength ≥40MPa, elastic modulus ≥32.5GP, and flexural strength ≥4MPa.

[0072] The slatted panel is 3000mm long and 600mm wide; the longitudinal rib has a mid-span height of 55mm and a clear rise of 55mm, and the clear span of the arch is 2720mm; the panel height is 55mm and the transverse rib height is 110mm; each slatted groove is 25mm wide and 1280mm long; in the longitudinal rib, the upper and lower glass fiber reinforcements have diameters of 8mm and 12mm respectively; the glass fiber reinforcements in the panel have a diameter of 8mm; the glass fiber reinforcements in the transverse ribs have a diameter of 8mm, forming a rectangle with a length of 500mm and a height of 60mm.

[0073] This invention is lightweight, corrosion-resistant, inexpensive, and simple to manufacture, making it suitable for the construction of large-scale pigsties.

[0074] Example 2

[0075] A manufacturing process for a fiberglass reinforced arched ribbed pigsty slatted panel includes the following steps:

[0076] (1) Prepare the slatted concrete mold and place it on the concrete vibrating table;

[0077] (2) Tie the double-layer glass fiber reinforcement located in the longitudinal ribs. After tying, place it on the mold. The glass fiber reinforcement on the panel can be placed directly. During the construction, pads are set at the bottom to protect the thickness of the protective layer. Placing directly means placing it on the pads.

[0078] (3) Mix dry-hard concrete, pour it into the slatted wall mold, and vibrate it to compact it;

[0079] (4) After the slatted board is demolded, it should be cured by routine maintenance or high-temperature steam curing.

[0080] (5) Install slatted floorboards;

[0081] (6) Fill the gaps at both ends of the slatted board with fine aggregate concrete.

[0082] The parts not mentioned in this embodiment are the same as in Embodiment 1.

[0083] The experimental process is as follows: First, the longitudinal ribs are tested. Then, the finite element simulation results are compared with the longitudinal rib test results to prove that the finite element simulation process is feasible and correct. Finally, the dimensions of the complete slatted panel are simulated using the finite element method.

[0084] Firstly, a four-point bending test was conducted on the most important arched longitudinal rib in a glass fiber reinforced arched ribbed pigsty slatted panel. The specific dimensions and reinforcement details of the longitudinal rib are detailed below. Figures 8-10 .

[0085] The experiment was conducted under two different working conditions: (1) the two ends of the arched longitudinal rib were completely fixed; (2) a 2mm gap was left at each end of the arched longitudinal rib to simulate the construction error caused by the pouring of fine aggregate concrete at the ends during the laying of the slatted floor or the shrinkage that the fine aggregate concrete may cause during use due to drying shrinkage. This experiment used a self-designed end-fixing device to achieve the two end-fixing modes of the arched longitudinal rib. The four-point bending load test device is shown below. Figure 11 See end fixing device Figure 12 .

[0086] The loading process was conducted in accordance with the test method for slatted floorboards:

[0087] (1) Place the arched longitudinal ribs on the loading platform and center them;

[0088] (2) Adjust the steel blocks of the end fixers to achieve complete fixation of the ends of the arched longitudinal ribs or to set the predetermined gap at the ends;

[0089] (3) Loading, the loading method is four-point loading;

[0090] (4) A hierarchical loading system is adopted, with each additional level recording relevant data. The loading system is as follows:

[0091] ① Preloading: The preload is 1kN. After confirming that the test plate ribs are in good contact with the testing machine and that the measuring device is working properly, the load is unloaded to zero.

[0092] ②Formal loading: Each load level is 1kN, and test data are collected after each load level is held for 2 minutes.

[0093] The final experimental and ABAQUS-based finite element analysis results are shown in the following table and... Figure 13 As shown:

[0094] Note: Ultimate load is the maximum load that the plate rib can withstand, and ultimate mid-span deflection is the mid-span deflection of the plate rib corresponding to the ultimate load.

[0095] Comparing the test results of the rib loading test of the slatted panel with the finite element analysis results, it can be seen that the test results are in good agreement with the finite element analysis results, proving that the method of designing and optimizing the slatted panel using the ABAQUS platform is feasible and correct.

[0096] Based on the finite element model of the arched longitudinal ribs, the finite element analysis of the slatted panel was carried out to optimize its cross-sectional dimensions and the configuration of the glass fiber reinforcement, and the optimized slatted panel was finally obtained as shown in this embodiment.

[0097] The finite element simulation results for the slatted panel in Example 1 are as follows:

[0098] 1) When both ends of the slatted panel are completely fixed and there are no gaps, a uniformly distributed load of 10kN is applied to the panel of the slatted panel. The deflection of the slatted panel is 13.46mm, and the slatted panel is in good condition.

[0099] 2) When a 2mm gap is left at each end of the slatted panel, a uniformly distributed load of 10kN is applied to the panel. The deflection of the slatted panel is 25.51mm, and the slatted panel is in good condition.

[0100] Both of the above working conditions meet the requirement that the mid-span deflection of a conventional pigsty slatted floor under a uniformly distributed load of 10kN is less than 1 / 100 = 29mm of the simply supported span.

[0101] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A glass fiber reinforced arched rib pig house leak-proof board, comprising a body, the body comprising a panel, a horizontal rib and a vertical rib, the panel being rectangular, the horizontal rib extending along the width direction of the panel and being arranged on both sides of the panel, the vertical rib extending along the length direction of the panel and being arranged on both sides of the panel, a plurality of leak slots are arranged on the panel, the length direction of the leak slots being arranged along the length direction of the panel, the upper end faces of the panel, the horizontal rib and the vertical rib are flush, and the lower end faces of the horizontal rib and the vertical rib are lower than the lower end face of the panel, characterized in that: The lower end face of the longitudinal rib is an arched surface that is concave upwards; the slatted panel also includes multiple glass fiber reinforcements, with glass fiber reinforcements set in both the transverse and longitudinal ribs. The glass fiber reinforcements in the transverse ribs and the glass fiber reinforcements in the longitudinal ribs overlap each other, and glass fiber reinforcements extending along the length of the panel are set in the panel between the slatted grooves; the material of the body is dry-hard concrete. Fiberglass reinforcing bars are divided into rectangular fiberglass reinforcing bars, strip fiberglass reinforcing bars, and arc fiberglass reinforcing bars; a vertically erected rectangular fiberglass reinforcing bar is set in the transverse rib; a strip fiberglass reinforcing bar is set on the upper side and an arc fiberglass reinforcing bar is set on the lower side in the longitudinal rib, and the curvature of the arc fiberglass reinforcing bar corresponds to the curvature of the lower end face of the longitudinal rib; a strip fiberglass reinforcing bar is set between adjacent rows of sprue grooves in the panel. The ultimate tensile strength of glass fiber reinforced concrete is ≥ 800 MPa, and the elastic modulus is ≥ 40 GPa. The mechanical properties of dry-hard concrete are compressive strength ≥40MPa, elastic modulus ≥32.5GP, and flexural strength ≥4MPa. The slatted panel is 3000mm long and 600mm wide; the longitudinal rib has a mid-span height of 55mm and a clear rise of 55mm, and the clear span of the arch is 2720mm; the panel height is 55mm and the transverse rib height is 110mm; each slatted groove is 25mm wide and 1280mm long; in the longitudinal rib, the upper and lower glass fiber reinforcements have diameters of 8mm and 12mm respectively; the glass fiber reinforcements in the panel have a diameter of 8mm; the glass fiber reinforcements in the transverse ribs have a diameter of 8mm, forming a rectangle with a length of 500mm and a height of 60mm.

2. The fiberglass reinforced arched ribbed pigsty slatted board according to claim 1, characterized in that: The fiberglass reinforcing bars in the longitudinal ribs are connected to the fiberglass reinforcing bars in the transverse ribs by binding.

3. A fiberglass reinforced arched ribbed pigsty slatted panel according to claim 1, characterized in that: There are six slots, arranged in three rows along the width and two columns along the length.

4. A fiberglass reinforced arched ribbed pigsty slatted panel according to claim 1, characterized in that: The surface of the fiberglass reinforcement is sandblasted.

5. A fiberglass reinforced arched ribbed pigsty slatted panel according to claim 1, characterized in that: The protective layer thickness of the fiberglass reinforcement is ≥15mm.

6. The manufacturing process of a glass fiber reinforced arched ribbed pigsty slatted panel according to any one of claims 1 to 5, characterized in that, Includes the following steps: (1) Prepare the slatted concrete mold and place it on the concrete vibrating table; (2) Tie the double-layer glass fiber reinforcement located in the longitudinal ribs. After tying, place it on the mold. The glass fiber reinforcement on the panel can be placed directly. (3) Mix dry-hard concrete, pour it into the slatted wall mold, and vibrate it to compact it; (4) After the slatted board is demolded, it should be cured by routine maintenance or high-temperature steam curing; (5) Install the slatted floorboards; (6) Fill the gaps at both ends of the slatted board with fine aggregate concrete.

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