Thermal load-bearing integrated prefabricated floor system and method for high-performance grain storage

Abstract

The application discloses a heat-insulation load-bearing integrated prefabricated floor system for high-performance granaries and a method thereof. The prefabricated floor system comprises a reinforced concrete frame and a foamed ceramic panel in the reinforced concrete frame. The production method of the prefabricated floor system comprises the following steps: clamping the foamed ceramic panel between upper and lower inner molds, arranging a steel framework around the foamed ceramic panel, pouring concrete into the steel framework, and finally removing the molds. The construction method of the prefabricated floor system comprises the following steps: installing main load-bearing structures on a granary roof, arranging a heat-insulation load-bearing integrated prefabricated floor between the two main load-bearing structures and fixing the heat-insulation load-bearing integrated prefabricated floor, and then hoisting and installing other heat-insulation load-bearing integrated prefabricated floors in sequence; and finally adding a reinforcing structure at a joint where the installation is completed. The prefabricated floor system has the beneficial effects that the heat-insulation load-bearing integrated prefabricated floor is composed of a reinforced concrete frame and a foamed ceramic panel, the self weight of the heat-insulation load-bearing integrated prefabricated floor is only 1 / 5 of that of a reinforced concrete prefabricated floor with the same size, the heat-insulation load-bearing integrated prefabricated floor is convenient to transport and install, and the cost of the main structure is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of building technology, and in particular to a precast floor slab system for high-performance grain depots that integrates insulation and load-bearing, as well as its production and construction methods. Background Technology

[0002] Food security is a crucial component of national security and a vital foundation for achieving economic development, social stability, and national security. The construction of high-standard grain silos places higher demands on the insulation and airtightness of grain processing buildings. Currently, the span of flat-roofed grain silos is generally required to be greater than 18 meters, and the eaves height is generally required to be greater than 10 meters. To improve roof insulation, double-layered roofs with natural ventilation are a common practice. To ensure the airtightness of the roof, the lower roof panel is usually constructed using cast-in-place concrete. This necessitates the on-site erection of tall concrete formwork supports, which is costly, slow, and dangerous. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated prefabricated floor slab system for high-performance grain depots, including its production and construction methods.

[0004] A precast floor slab system for high-performance grain depots, comprising a reinforced concrete frame 1 and a foamed ceramic panel 2.

[0005] The cross-section of any side of the reinforced concrete frame 1 is a trapezoid with the outer side inclined; multiple hanging screw holes 1-2 are provided on two opposite sides of the reinforced concrete frame 1, and through holes 1-3 for installation are provided at the four corners of the reinforced concrete frame 1.

[0006] The foamed ceramic panel 2 has one or more pieces, and multiple foamed ceramic panels 2 are arranged in sequence and closely attached. The entire arrangement of the foamed ceramic panels 2 is embedded in the reinforced concrete frame 1.

[0007] A method for producing an integrated thermal insulation and load-bearing precast floor slab system for high-performance grain depots, comprising the following steps:

[0008] Step 1: Prepare the lower inner mold 3-1, and place the foamed ceramic panels 2 on the lower inner mold 3-1 in sequence, with adjacent foamed ceramic panels 2 closely attached.

[0009] Step 2: Place the upper inner mold 3-2 on top of the foamed ceramic panel 2, with the side of the foamed ceramic panel 2 protruding beyond the lower inner mold 3-1 and the upper inner mold 3-2;

[0010] Step 3: Set a steel frame 1-1 around the foamed ceramic panel 2, and set multiple hanging screw holes 1-2 on two opposite sides of the steel frame 1-1, and set through holes 1-3 for installation at the four corners of the steel frame 1-1;

[0011] Step 4: Place a mold around the outer perimeter of the steel reinforcement cage 1-1 and pour concrete into the mold. After the concrete reaches the required strength, remove the mold, the lower inner mold 3-1, and the upper inner mold 3-2.

[0012] A high-performance grain depot includes a precast floor slab system with integrated thermal insulation and load-bearing structure, manufactured using the construction method described in claim 4.

[0013] Compared with previous technologies, the beneficial effects of the present invention are as follows:

[0014] 1. The integrated thermal insulation and load-bearing precast floor slab is made of reinforced concrete frame and foamed ceramic board. Its self-weight is only 1 / 5 of that of the same size reinforced concrete precast floor slab. It is convenient to transport and install and can significantly reduce the cost of the main structure.

[0015] 2. Placing the reinforced concrete frame on the outside can prevent the foamed ceramic panels from being damaged by collisions during production and transportation; the precast floor slabs have sufficient strength to achieve support-free and formwork-free construction, significantly reducing on-site construction costs;

[0016] 3. The reinforced concrete frame and foamed ceramic panel adopt the mechanical interlocking principle, which makes the connection structure simple and reliable and has a cost advantage;

[0017] 4. Foamed ceramic panels have excellent thermal insulation properties, eliminating the need for an insulation layer on the panel surface; this reduces the cost of insulation construction.

[0018] 5. On-site reinforced modules made of foamed ceramic panels can achieve the same airtight performance as cast-in-place concrete. Attached Figure Description

[0019] Figure 1 Axonometric view of a precast floor slab that integrates thermal insulation and load-bearing capacity;

[0020] Figure 2 A cross-sectional view of a precast floor slab that integrates thermal insulation and load-bearing capacity;

[0021] Figure 3 A schematic diagram showing the completion of step 1 in the production process of precast floor slabs that integrate thermal insulation and load-bearing capacity;

[0022] Figure 4 A schematic diagram showing the completion of step 2 in the production process of precast floor slabs that integrate thermal insulation and load-bearing capacity;

[0023] Figure 5 A schematic diagram showing the completion of step 3 in the production process of precast floor slabs that integrate thermal insulation and load-bearing capacity;

[0024] Figure 6 A schematic diagram showing the completion of step 1 in the installation process of precast floor slabs with integrated thermal insulation and load-bearing capacity;

[0025] Figure 7 This is a schematic diagram showing the completion of step 2 during the installation of the integrated thermal insulation and load-bearing precast floor slab.

[0026] Figure 8 A schematic diagram showing the completion of step 3 in the installation process of precast floor slabs with integrated thermal insulation and load-bearing capacity;

[0027] Figure 9 A schematic diagram showing the completion of step 4 in the installation process of precast floor slabs with integrated thermal insulation and load-bearing capacity;

[0028] Figure 10 A cross-sectional view of the reinforced joint after the installation of the integrated thermal insulation and load-bearing precast floor slab.

[0029] Labeling Explanation: A. Integrated Insulation and Load-Bearing Precast Floor Slab; 1. Reinforced Concrete Frame; 1-1. Reinforcing Steel Frame; 1-2. Lifting Point Screw Holes; 1-3. Installation Through Holes; 1-4; 2. Foamed Ceramic Panels; 3-1. Lower Inner Mold; 3-2. Upper Inner Mold; 4. Main Load-Bearing Structure; 4-1. Anchoring Steel Bars; 5. Non-Shrink Grouting Material; 6. Groove-Shaped Foamed Ceramic Insulation Blocks; 7. Foamed Ceramic Airtight Reinforcing Strips. Detailed Implementation

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] The present invention will now be described in detail with reference to the accompanying drawings:

[0032] like Figure 1 , 2 As shown: A prefabricated floor slab system for high-performance grain depots, the prefabricated floor slab for high-performance grain depots includes a reinforced concrete frame 1 and a foamed ceramic panel 2.

[0033] The cross-section of any side of the reinforced concrete frame 1 is a trapezoid with the outer side inclined; multiple hanging screw holes 1-2 are provided on two opposite sides of the reinforced concrete frame 1, and through holes 1-3 for installation are provided at the four corners of the reinforced concrete frame 1.

[0034] The foamed ceramic panel 2 has one or more pieces, and multiple foamed ceramic panels 2 are arranged in sequence and closely attached. The entire arrangement of the foamed ceramic panels 2 is embedded in the reinforced concrete frame 1.

[0035] The reinforced concrete frame 1 is rectangular, and the hanging screw holes 1-2 are located on the long side of the reinforced concrete frame 1.

[0036] The reinforced concrete frame 1 is set along the edge of the foamed ceramic panel 2, and the reinforced concrete frame 1 has an internal steel reinforcement skeleton 1-1. Generally, the reinforced concrete frame 1 is rectangular, specifically a rectangle, with four hanging screw holes 1-2 on the two long sides and through holes 1-3 for installation at the four corners.

[0037] The foamed ceramic panel 2 is located in the middle of the reinforced concrete frame 1, and the adjacent panels are closely arranged; the ends (edges) of the foamed ceramic panel 2 are embedded in the reinforced concrete frame 1.

[0038] A method for producing an integrated thermal insulation and load-bearing precast floor slab system for high-performance grain depots, comprising the following steps:

[0039] Step 1: Prepare the lower inner mold 3-1, and place the foamed ceramic panels 2 on the lower inner mold 3-1 in sequence, with adjacent foamed ceramic panels 2 closely attached.

[0040] Step 2: Place the upper inner mold 3-2 on top of the foamed ceramic panel 2, with the side of the foamed ceramic panel 2 protruding beyond the lower inner mold 3-1 and the upper inner mold 3-2;

[0041] Step 3: Set a steel frame 1-1 around the foamed ceramic panel 2, and set multiple hanging screw holes 1-2 on two opposite sides of the steel frame 1-1, and set through holes 1-3 for installation at the four corners of the steel frame 1-1;

[0042] Step 4: Place a mold around the outer perimeter of the steel reinforcement cage 1-1 and pour concrete into the mold. After the concrete reaches the required strength, remove the mold, the lower inner mold 3-1, and the upper inner mold 3-2.

[0043] It should be noted that when placing the mold, the inner side of the mold is inclined, which ensures that the outer side of the reinforced concrete frame after pouring is inclined, thereby ensuring that the cross-section of any side of the reinforced concrete frame 1 is a trapezoid with the outer side inclined.

[0044] The lifting screw holes 1-2 and the installation through holes 1-3 here can be prefabricated steel pipes tied to the steel reinforcement cage 1-1.

[0045] A construction method for an integrated thermal insulation and load-bearing precast floor slab system for high-performance grain depots includes the following steps:

[0046] Step 1: Install the main load-bearing structure 4 of the granary roof, and set anchor steel bars 4-1 on the main load-bearing structure 4 corresponding to the installation through holes 1-3;

[0047] Step 2: Place the integrated thermal insulation and load-bearing precast floor slab between the two main load-bearing structures 4, and insert the anchoring steel bars 4-1 into the installation through holes 1-3. After adjusting the positioning, pour non-shrink grout.

[0048] Step 3: Hoist the other precast integrated insulated load-bearing floor slabs in sequence; and inject non-shrink grout 5 between adjacent precast integrated insulated load-bearing floor slabs A.

[0049] Step 4: Use special adhesive to attach the grooved foamed ceramic insulation block 6 at the connection of adjacent reinforced concrete frame 1; and use special adhesive to attach the foamed ceramic airtight reinforcing strip 7 at the joint of foamed ceramic panel 2.

[0050] The main load-bearing structure 4 here is inverted T-shaped. The two wings extending from the bottom of the inverted T-shape serve as the support surface for the anchoring steel bars 4-1, and the anchoring steel bars are installed on the support surface.

[0051] The cross-section of the grooved foamed ceramic insulation block 6 is U-shaped.

[0052] A high-performance grain depot includes a precast floor slab system with integrated thermal insulation and load-bearing structure, manufactured using the construction method described in claim 4.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat-insulating load-bearing integrated prefabricated floor system for high-performance grain storage, characterized in that: The heat preservation load-bearing integrated prefabricated floor comprises a reinforced concrete frame (1) and a foamed ceramic panel (2). Any side cross section of the reinforced concrete frame (1) is trapezoidal with inclined outer side; a plurality of lifting point screw holes (1-2) are arranged on two opposite sides of the reinforced concrete frame (1), and mounting through holes (1-3) are arranged on four corners of the reinforced concrete frame (1); the foamed ceramic panel (2) is provided with more than one piece, and the plurality of foamed ceramic panels (2) are sequentially and closely arranged, and the whole of the arranged foamed ceramic panels (2) is embedded in the reinforced concrete frame (1). The foamed ceramic panel (2) is embedded in the reinforced concrete frame (1) by the following way: Prepare a lower inner mold (3-1), and sequentially place the foamed ceramic panels (2) on the lower inner mold (3-1), wherein the adjacent foamed ceramic panels (2) are closely arranged; Then place an upper inner mold (3-2) on the top of the foamed ceramic panels (2), and the side edges of the foamed ceramic panels (2) protrude out of the lower inner mold (3-1) and the upper inner mold (3-2); Then arrange a steel framework (1-1) around the foamed ceramic panels (2), and arrange a plurality of lifting point screw holes (1-2) on two opposite sides of the steel framework (1-1), and arrange mounting through holes (1-3) on four corners of the steel framework (1-1); Finally, place a mold around the steel framework (1-1) and pour concrete in the mold, and after the concrete reaches the strength, remove the mold, the lower inner mold (3-1) and the upper inner mold (3-2).

2. The system according to claim 1, wherein the system is a system for high performance grain storage. The reinforced concrete frame (1) is rectangular, and the lifting point screw holes (1-2) are located on the long sides of the reinforced concrete frame (1).

3. A construction method of the heat-insulating load-bearing integrated prefabricated floor system for the high-performance grain storage of claim 1, characterized in that: It comprises the following steps: Step 1, install the main load-bearing structure (4) of the granary roof, and arrange anchor steels (4-1) corresponding to the mounting through holes (1-3) on the main load-bearing structure (4); Step 2, place the heat preservation load-bearing integrated prefabricated floor between the two main load-bearing structures (4), the anchor steels (4-1) are inserted into the mounting through holes (1-3), and after adjusting and positioning, pour non-shrinkage grouting material; Step 3, sequentially hoist other heat preservation load-bearing integrated prefabricated floors (A); and pour non-shrinkage grouting material (5) between adjacent heat preservation load-bearing integrated prefabricated floors (A); Step 4, use special glue to paste groove-shaped foamed ceramic heat preservation blocks (6) at the connection between adjacent reinforced concrete frames (1); and use special glue to paste foamed ceramic air-tight reinforcing strips (7) at the joints of the foamed ceramic panels (2).

4. A high-performance grain depot comprising the heat preservation load-bearing integrated prefabricated floor system prepared by the construction method of claim 3.

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