Glass fiber rib arched rib hog house leak plate and manufacturing process thereof

Abstract

The glass fiber rib arch rib hog house leak plate comprises a body, the body comprises a face plate, transverse ribs and longitudinal ribs, the face plate is rectangular, the transverse ribs and the longitudinal ribs extend in the width direction and the length direction of the face plate respectively and are arranged on the two sides of the face plate, a plurality of leak grooves are formed in the face plate, the length direction of the leak grooves is arranged in the length direction of the face plate, and the longitudinal ribs are arranged on the face plate. The upper end faces of the panel, the transverse ribs and the longitudinal ribs are flush, and the lower end faces of the transverse ribs and the longitudinal ribs are lower than the lower end face of the panel; the lower end surface of the longitudinal rib is an arc-shaped surface which is upwards sunken into an arch; the leak plate further comprises a plurality of glass fiber ribs, the glass fiber ribs are arranged in the transverse ribs and the longitudinal ribs, the glass fiber ribs in the transverse ribs and the glass fiber ribs in the longitudinal ribs are in lap joint with each other, and the glass fiber ribs extending in the length direction of the panel are arranged in the panel between the leak grooves. The body is made of dry hard concrete. The invention has the advantages of light dead weight, corrosion resistance, low manufacturing cost, simple manufacturing process and short manufacturing period, and belongs to the technical field of breeding industry auxiliary equipment.

Description

Technical Field

[0001] The invention relates to the field of auxiliary equipment for breeding industry, and in particular to a glass fiber reinforced arched rib pig house slatted plate and a manufacturing process thereof. Background Art

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

[0003] As a composite material, fiber reinforced composite reinforcement (hereinafter referred to as composite reinforcement) has the advantages of high strength, light weight and good corrosion resistance. In addition, compared with fiber reinforced composite plates, fabrics and meshes, composite reinforcement can be directly used in concrete components without the process of applying or soaking glue, which has the advantage of simple construction, and its surface is often sandblasted, which can better bond with concrete.

[0004] Compared with ordinary concrete, dry hard concrete has the characteristics of low fluidity, low hydration heat, fast hardening speed, high early strength, reduced project cost and shortened construction period. Dry hard concrete is commonly used in precast concrete products and components, concrete hollow blocks, road panels, road panels, pavement bricks and other projects. It has the characteristics of batch production on factory production lines and immediate demoulding and maintenance, which can shorten the construction period and save costs. However, the prior art does not use this material for mass production of pig house slatted panels.

[0005] How to strike a balance among deadweight, performance, strength and cost is the key to pig house slatted panel design. Summary of the invention

[0006] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a glass fiber reinforced arched rib pig house slatted board and a manufacturing process thereof, which can maintain good mechanical indicators while reducing the board thickness and replacing steel bars with composite reinforcements.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A glass fiber reinforced arched rib pig house slatted board comprises a body, the body comprising a panel, transverse ribs and longitudinal ribs, the panel is rectangular, the transverse ribs extend along the width direction of the panel and are arranged on both sides of the panel, the longitudinal ribs extend along the length direction of the panel and are arranged on both sides of the panel, a plurality of slatted grooves are arranged on the panel, the length direction of the slatted grooves are arranged along the length direction of the panel, the upper end surfaces of the panel, the transverse ribs and the longitudinal ribs are flush, the lower end surfaces of the transverse ribs and the longitudinal ribs are lower than the lower end surface of the panel; the lower end surface of the longitudinal ribs is an arcuate surface that is concave upward into an arch shape; the slatted board also comprises a plurality of glass fiber reinforced bars, the glass fiber reinforced bars in both the transverse ribs and the longitudinal ribs are overlapped with each other, and the glass fiber reinforced bars extending along the length direction of the panel are arranged in the panel between the slatted grooves; the material of the body is dry hard concrete.

[0009] As a preferred embodiment, the glass fiber reinforcement is divided into rectangular glass fiber reinforcement, strip glass fiber reinforcement and arc glass fiber reinforcement; a vertically upright rectangular glass fiber reinforcement is arranged 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 arranged in the longitudinal rib, and the curvature of the arc glass fiber reinforcement corresponds to the curvature of the lower end surface of the longitudinal rib; a strip glass fiber reinforcement is arranged between adjacent rows of leakage grooves in the panel.

[0010] As a preferred embodiment, the glass fiber reinforcement in the longitudinal ribs and the glass fiber reinforcement in the transverse ribs are connected by binding.

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

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

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

[0014] As a preferred embodiment, the ultimate tensile strength of the glass fiber reinforcement is ≥800MPa, and the elastic modulus is ≥40GPa.

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

[0016] As a preferred embodiment, the length of the slatted plate is 3000mm and the width is 600mm; the mid-span height of the longitudinal rib is 55mm, the net rise is 55mm, and the arch net span is 2720mm; the panel height is 55mm, and the height of the transverse rib is 110mm; the width of each slatted groove is 25mm and the length is 1280mm; in the longitudinal rib, the diameters of the upper and lower glass fiber reinforcements are 8mm and 12mm respectively; the diameter of the glass fiber reinforcement in the panel is 8mm; the diameter of the glass fiber reinforcement in the transverse rib is 8mm, and it encloses a rectangle with a length of 500mm and a height of 60mm.

[0017] A manufacturing process of a glass fiber reinforced arched rib pig house slatted board comprises the following steps:

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

[0019] (2) Tie the double-layer glass fiber reinforcements in the longitudinal ribs and place them on the mold. The glass fiber reinforcements on the panel can be placed directly.

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

[0021] (4) After demoulding, the slatted panels are subjected to conventional curing or high-temperature steam curing;

[0022] (5) Install slatted panels;

[0023] (6) Pour fine stone concrete into the gaps at both ends of the slatted plates.

[0024] The principle of the present invention is:

[0025] Aiming at the problems existing in traditional reinforced concrete slatted panels, considering the stress state of pig house slatted panels and the requirements of their ultimate bearing capacity and normal limit states, the arched plate rib loading test was carried out according to the mechanical properties of the selected glass fiber reinforcement and dry hard concrete, and a finite element model of the arched plate rib verified by the test data was established to determine the optimal shape of the arched plate rib. Furthermore, based on the plane dimensions of the existing conventional pig house slatted panels, a finite element model of the glass fiber reinforcement arched rib slatted panels was established, and the optimal form of a new type of arched rib pig house slatted panels using glass fiber reinforcement and dry hard concrete was proposed, and its manufacturing process was proposed.

[0026] The present invention has the following advantages:

[0027] 1. The slatted plate of the present invention has the advantages of light weight, corrosion resistance, low cost, simple manufacturing process and short manufacturing cycle by setting a specific structure, material selection and size.

[0028] 2. The slatted plate of the present invention fully utilizes the characteristics of light weight, high tensile strength, good corrosion resistance of glass fiber composite reinforcement, fast hardening and demoulding of dry hard concrete, and can effectively shorten the production cycle.

[0029] 3. The mid-span thickness of the longitudinal ribs of the slatted slab is only 55mm. Compared with the traditional 110mm thick reinforced concrete slatted slab, its self-weight is reduced by 20% to 30%, which greatly reduces the self-weight of the pig house structure and is particularly suitable for multi-story pig house buildings.

[0030] 4. Glass fiber composite bars replace steel bars, which reduces the overall cost of slatted panels by about 20%.

[0031] 5. The glass fiber composite reinforcement used in the slatted plate has a small loss rate of tensile strength in acid and alkaline environments, and exhibits good corrosion resistance in the pig house environment.

[0032] 6. The production adopts conventional technology, which is simple and convenient.

[0033] 7. Arched longitudinal ribs are used to reduce the deadweight of the slatted panels. At the same time, after the slatted panels are paved, fine stone concrete is poured into the gaps at the ends to fix the ends, ensuring that the slatted panels can still meet the requirements of bearing capacity and deformation under normal stress conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional view of a slatted plate of the present invention.

[0035] Figure 2 It is a stereogram of another viewing angle of the slatted plate of the present invention.

[0036] Figure 3 It is the reinforcement diagram of the slatted plate of the present invention.

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

[0038] Figure 5 yes Figure 3 Sectional view of 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 It is the front view of the longitudinal rib in the design stage, unit: mm.

[0042] Fig. 9 It is the end section view of the longitudinal rib in the design stage, in mm.

[0043] Fig.10 It is the middle section view of the longitudinal rib in the design stage, unit is mm.

[0044] Fig.11 It is a four-point bending loading test device.

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

[0046] Fig.13 It is the load-deflection curve diagram of finite element analysis and test results.

[0047] Fig.14 It is the finite element stress cloud diagram of the specimen with end gap of 0mm.

[0048] Fig.15 This is the finite element stress cloud diagram of the specimen with an end gap of 2mm.

[0049] Fig.16 It is the finite element stress cloud diagram when the gap at the end of the specimen is 0mm.

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

[0051] 1-main body, 2-lateral part of the panel, 3-lateral ribs, 4-lateral part of the panel, 5-longitudinal ribs, 6-slatted grooves.

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

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

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

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

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

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

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

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

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

[0061] K1-strip glass fiber reinforcement with a diameter of 8mm; K2-arc-shaped glass fiber reinforcement with a diameter of 12mm; K3-strip glass fiber reinforcement with a diameter of 8mm; K4-rectangular glass fiber reinforcement with a diameter of 8mm; c is the thickness of the protective layer of the glass fiber reinforcement. DETAILED DESCRIPTION

[0062] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0063] Embodiment 1

[0064] A glass fiber reinforced arched rib pig house slatted board comprises a body, the body comprising a panel, transverse ribs and longitudinal ribs, the panel is rectangular, the transverse ribs extend along the width direction of the panel and are arranged on both sides of the panel, the longitudinal ribs extend along the length direction of the panel and are arranged on both sides of the panel, a plurality of slatted grooves are arranged on the panel, the length direction of the slatted grooves are arranged along the length direction of the panel, the upper end surfaces of the panel, the transverse ribs and the longitudinal ribs are flush, the lower end surfaces of the transverse ribs and the longitudinal ribs are lower than the lower end surface of the panel; the lower end surface of the longitudinal ribs is an arcuate surface that is concave upward into an arch shape; the slatted board also comprises a plurality of glass fiber reinforced bars, the glass fiber reinforced bars in both the transverse ribs and the longitudinal ribs are overlapped with each other, and the glass fiber reinforced bars extending along the length direction of the panel are arranged in the panel between the slatted grooves; the material of the body is dry hard concrete.

[0065] 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 arranged 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 arranged in the longitudinal rib, and the curvature of the arc glass fiber reinforcement corresponds to the curvature of the lower end surface of the longitudinal rib; a strip glass fiber reinforcement is arranged between adjacent rows of leak seam grooves in the panel.

[0066] The glass fiber reinforcement in the longitudinal rib and the glass fiber reinforcement in the transverse rib are connected by binding.

[0067] The number of slat slots is six, arranged in three rows along the width direction and in two columns along the length direction.

[0068] The surface of the glass fiber reinforcement is sandblasted, which can form a good bond with dry hard concrete.

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

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

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

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

[0073] The invention has the advantages of light weight, good corrosion resistance, low cost and simple manufacture, and is suitable for the construction of large-scale pig houses.

[0074] Embodiment 2

[0075] A manufacturing process of a glass fiber reinforced arched rib pig house slatted board comprises the following steps:

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

[0077] (2) Tie the double-layer glass fiber reinforcement inside the longitudinal ribs and place them on the mold. The glass fiber reinforcement on the panel can be placed directly. During the construction, pads will be set at the bottom to provide a protective layer thickness. Direct placement means placing them on the pads.

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

[0079] (4) After demoulding, the slatted panels are subjected to conventional curing or high-temperature steam curing;

[0080] (5) Install slatted panels;

[0081] (6) Pour fine stone concrete into the gaps at both ends of the slatted plates.

[0082] The parts not mentioned in this embodiment are the same as those in the first embodiment.

[0083] The test process is as follows: first test the longitudinal ribs, then compare the finite element simulation results with the longitudinal rib test results to prove that the finite element simulation process is feasible and correct, and then use the finite element method to simulate the dimensions of the complete slatted plate.

[0084] Firstly, a four-point bending test was carried out on the most important arched longitudinal ribs in a glass fiber reinforced arched rib pig house slatted plate. The specific size and reinforcement of the longitudinal ribs are shown in Figure 8-Figure 10 .

[0085] The test was conducted under two different working conditions: (1) both ends of the arched longitudinal rib were completely fixed; (2) a 2 mm gap was left at each end of the arched longitudinal rib to simulate the construction error caused by the pouring of fine stone concrete at the end when the slatted board was laid, or the possible shrinkage of fine stone concrete due to shrinkage during use. This test used a self-designed end fixing device to achieve the above two end fixing modes of the arched longitudinal rib. See the four-point bending loading test device for details. Fig.11 , end fixing device see Fig.12 .

[0086] The test loading process is carried out in accordance with the slatted plate loading test method:

[0087] (1) Place the arched longitudinal rib on the loading platform and align it;

[0088] (2) Adjust the steel block of the end fixer to achieve complete fixation of the end of the arched longitudinal rib or setting of a predetermined gap at the end;

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

[0090] (4) Use hierarchical loading, record relevant data at each level, and the loading system is as follows:

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

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

[0093] The final test and finite element analysis results based on ABAQUS are shown in the following table and Fig.13 As shown:

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

[0095] Comparing the slatted plate rib loading test results with the finite element analysis results, it can be seen that the test results are consistent with the finite element analysis results, which proves that the method of designing and optimizing slatted plates using the ABAQUS platform is feasible and correct.

[0096] Based on the finite element model of the arched longitudinal rib, a finite element analysis is performed on the slatted plate to optimize its cross-sectional dimensions and the configuration of the glass fiber reinforcement, and finally an optimized slatted plate is obtained as shown in the first embodiment.

[0097] The finite element simulation results of the slatted plate of Example 1 are as follows:

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

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

[0100] The above two working conditions both meet the deformation requirement that the mid-span deflection of the conventional pig house slatted plate is less than 1 / 100 = 29 mm of the simply supported span when the load is uniformly distributed at 10 kN.

[0101] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A glass fiber reinforced arched rib piggery slatted board, comprising a body, the body comprising a panel, a transverse rib, and a longitudinal rib, the panel is rectangular, the transverse ribs extend along the width direction of the panel and are arranged on both sides of the panel, the longitudinal ribs extend along the length direction of the panel and are arranged on both sides of the panel, a plurality of slatted grooves are arranged on the panel, the length direction of the slatted grooves is arranged along the length direction of the panel, the upper end surfaces of the panel, the transverse ribs, and the longitudinal ribs are flush, and the lower end surfaces of the transverse ribs and the longitudinal ribs are lower than the lower end surface of the panel, characterized in that: The lower end surface of the longitudinal rib is an arc-shaped surface that is concave upward into an arch shape; the slatted panel also includes a plurality of glass fiber reinforcements, which are arranged in both the transverse ribs and the longitudinal ribs, the glass fiber reinforcements in the transverse ribs and the glass fiber reinforcements in the longitudinal ribs overlap each other, and the glass fiber reinforcements extending along the length direction of the panel are arranged in the panel between the slatted grooves; the material of the main body is dry hard concrete.

2. A glass fiber reinforced arched rib pig house slatted board according to claim 1, characterized in that: 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 arranged 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 arranged in the longitudinal rib, and the curvature of the arc glass fiber reinforcement corresponds to the curvature of the lower end surface of the longitudinal rib; a strip glass fiber reinforcement is arranged between adjacent rows of leak seam grooves in the panel.

3. A glass fiber reinforced arched rib pig house slatted board according to claim 2, characterized in that: The glass fiber reinforcement in the longitudinal rib and the glass fiber reinforcement in the transverse rib are connected by binding.

4. A glass fiber reinforced arched rib pig house slatted board according to claim 2, characterized in that: The number of slat slots is six, arranged in three rows along the width direction and in two columns along the length direction.

5. A glass fiber reinforced arched rib pig house slatted board according to claim 1, characterized in that: The surface of the fiberglass reinforcement is sandblasted.

6. A glass fiber reinforced arched rib pig house slatted board according to claim 1, characterized in that: The protective layer thickness of the glass fiber reinforcement is ≥15mm.

7. A glass fiber reinforced arched rib pig house slatted board according to claim 1, characterized in that: The ultimate tensile strength of glass fiber reinforcement is ≥800MPa, and the elastic modulus is ≥40GPa.

8. A glass fiber reinforced arched rib pig house slatted board according to claim 1, characterized in that: The mechanical indicators of dry hard concrete are compressive strength ≥40MPa, elastic modulus ≥32.5GP, and flexural strength ≥4MPa.

9. A glass fiber reinforced arched rib pig house slatted board according to claim 4, characterized in that: The length of the slatted board is 3000mm and the width is 600mm; the mid-span height of the longitudinal rib is 55mm, the clear rise is 55mm, and the arch clear span is 2720mm; the panel height is 55mm, and the height of the transverse rib is 110mm; the width of each slatted groove is 25mm and the length is 1280mm; in the longitudinal rib, the diameters of the upper and lower glass fiber reinforcements are 8mm and 12mm respectively; the diameter of the glass fiber reinforcement in the panel is 8mm; the diameter of the glass fiber reinforcement in the transverse rib is 8mm, enclosing a rectangle with a length of 500mm and a height of 60mm.

10. A process for manufacturing a glass fiber reinforced arched rib pig house slatted board according to any one of claims 1 to 9, characterized in that: The steps include: (1) Prepare the slatted plate mold and place it on the concrete vibration table; (2) Tie the double-layer glass fiber reinforcements in the longitudinal ribs and place them on the mold. The glass fiber reinforcements on the panel can be placed directly. (3) Mix dry hard concrete, pour it into the slatted plate mold, and vibrate it to compact it; (4) After demoulding, the slatted panels are subjected to conventional curing or high-temperature steam curing; (5) Install slatted panels; (6) Pour fine stone concrete into the gaps at both ends of the slatted plates.

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