Ultra-thick mass concrete cake-shaped independent foundation

Abstract

The utility model discloses an ultra-thick mass concrete cake-shaped independent foundation, and relates to the technical field of desulfurization tower foundation construction, in particular to the ultra-thick mass concrete cake-shaped independent foundation which comprises a lower-layer steel bar, a supporting steel frame is fixedly connected in the lower-layer steel bar, an upper-layer steel bar is fixedly connected to the upper surface of the lower-layer steel bar, and a lower-layer steel bar is fixedly connected to the lower surface of the upper-layer steel bar. A plurality of cooling circulating water pipes are fixedly connected between the supporting steel frames, and an annular frame is fixedly connected to the upper surfaces of the upper-layer steel bars. During construction, each reinforcing steel bar is numbered, compared with traditional manual sample turning, the reinforcing steel bar stacking disorder is not prone to being caused, the construction speed is increased, reinforcing steel bar loss is reduced, the construction cost is also reduced, meanwhile, steel pipes with appropriate pipe diameters are adopted as cooling circulating water pipes, the pipe distance meets the standard requirement, one-time circulating water cooling is achieved, and the construction efficiency is improved. And one-time pouring is completed, so that the construction period can be guaranteed, the generation of mass concrete cracks is controlled, and the engineering quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower foundation construction technology, specifically to an ultra-thick, large-volume concrete disc-shaped independent foundation. Background Technology

[0002] In the construction of large industrial plants, ultra-thick, large-volume concrete foundations are often encountered. The raft foundation of the desulfurization tower of the flue gas purification device in the electrolytic aluminum plant is 3.6 meters thick and 20 meters in diameter, which is an ultra-thick, large-volume concrete foundation. The foundation is circular in shape, and the construction of steel bars, formwork, and concrete is difficult. During the construction period, the temperature in the region is low, which is winter construction, and the requirements for concrete curing technology are high. The project has a tight schedule and high construction quality requirements.

[0003] The conventional construction method for ultra-thick, large-volume concrete is to use layered pouring. However, the traditional layered pouring method is slow, which is detrimental to the construction period and results in high steel reinforcement loss. In addition, the large temperature difference between the inside and outside of the large-volume concrete can easily cause cracking after solidification. Utility Model Content

[0004] The purpose of this utility model is to provide an ultra-thick, large-volume concrete disc-shaped independent foundation. By setting up a lower layer of reinforcing bars, an upper layer of reinforcing bars, cooling circulating water pipes, a supporting steel frame, and embedded parts, it solves the problem that the conventional construction method for ultra-thick, large-volume concrete is the layered pouring method. The traditional layered pouring method has a slow construction speed, which is detrimental to the construction period and results in high steel bar loss. At the same time, the large temperature difference between the inside and outside of the large-volume concrete makes it easy to crack after solidification.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an ultra-thick, large-volume concrete disc-shaped independent foundation, including a lower layer of reinforcing bars, a supporting steel frame fixedly connected inside the lower layer of reinforcing bars, an upper layer of reinforcing bars fixedly connected to the upper surface of the lower layer of reinforcing bars, multiple cooling circulating water pipes fixedly connected between the supporting steel frames, an annular frame fixedly connected to the upper surface of the upper layer of reinforcing bars, and multiple threaded holes opened on the surface of the annular frame, with pre-embedded parts threadedly connected inside the multiple threaded holes.

[0006] Preferably, both the upper and lower reinforcing bars are fixedly connected to the surface of reinforcing bar hoops.

[0007] Preferably, tie rods are fixedly connected to the edges of both the upper and lower reinforcing bars, and one end of each tie rod is threaded with a double butterfly buckle.

[0008] Preferably, the tie rod is fixedly connected to an outer hoop ring by a double butterfly buckle, and a template bracket is snapped into the inside of the outer hoop ring.

[0009] Preferably, the outer hoop ring is fixedly connected to a wooden template via a template bracket, and the interior of the wooden template is filled with concrete.

[0010] This utility model provides an ultra-thick, large-volume concrete disc-shaped independent foundation, which has the following beneficial effects:

[0011] During construction, each rebar is numbered, which, compared to traditional manual layout, reduces the likelihood of disordered rebar stacking, increases construction speed, reduces rebar waste, and lowers construction costs. Simultaneously, using steel pipes of appropriate diameter as cooling circulating water pipes ensures that pipe spacing meets specifications. One-time circulating water cooling and one-time pouring not only guarantee the construction period but also control the formation of cracks in large-volume concrete, ensuring project quality. Furthermore, double butterfly buckles make the formwork more robust, preventing formwork bursts and ensuring the safety of large-volume concrete. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural breakdown diagram of the supporting steel frame of this utility model;

[0015] Figure 3 This is a structural breakdown diagram of the embedded part of this utility model;

[0016] Figure 4 This is a structural breakdown diagram of the cooling circulating water pipe of this utility model.

[0017] The image shows:

[0018] 1. Lower layer steel reinforcement; 2. Supporting steel frame; 3. Upper layer steel reinforcement; 4. Cooling circulating water pipe; 5. Ring frame; 6. Embedded parts; 7. Steel reinforcement hoop; 8. Tie rod; 9. Double butterfly buckle; 10. Outer hoop; 11. Formwork support; 12. Wooden formwork; 13. Concrete. Detailed Implementation

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes an ultra-thick, large-volume concrete disc-shaped independent foundation, including a lower layer of reinforcing bars 1. A supporting steel frame 2 is fixedly connected inside the lower layer of reinforcing bars 1. An upper layer of reinforcing bars 3 is fixedly connected to the upper surface of the lower layer of reinforcing bars 1. Multiple cooling circulating water pipes 4 are fixedly connected between the supporting steel frames 2. The cooling circulating water pipes 4 are made of Φ50 galvanized steel pipes arranged in two layers and welded to the reinforcing bars and supporting steel frames 2. One inlet and one outlet are designed. A ring frame 5 is fixedly connected to the upper surface of the upper layer of reinforcing bars 3. Multiple threaded holes are opened on the surface of the ring frame 5, and embedded parts 6 are threadedly connected inside the multiple threaded holes.

[0022] By using BIM software for 3D modeling, the quantity, number, and corresponding number of steel reinforcement can be exported for reference in material cutting. The cutting dimensions are accurate, and construction is carried out according to the model and corresponding numbers during installation, which can improve construction efficiency, prevent the steel reinforcement from being stacked in a mess, increase construction speed, and reduce steel reinforcement waste. After the lower layer of steel reinforcement 1 is tied, a supporting steel frame 2 needs to be installed before the upper layer of steel reinforcement 3 can be installed to support the steel reinforcement, which facilitates subsequent work and improves stability.

[0023] Both the upper layer of reinforcing bars 3 and the lower layer of reinforcing bars 1 are fixedly connected to reinforcing bar hoops 7.

[0024] Tie rods 8 are fixedly connected to the edges of the upper layer steel bar 3 and the lower layer steel bar 1, and one end of the tie rod 8 is threaded with a double butterfly buckle 9.

[0025] The tie rod 8 is fixedly connected to the outer hoop ring 10 by the double butterfly buckle 9, and the template bracket 11 is snapped into the inside of the outer hoop ring 10.

[0026] The outer hoop 10 uses two steel bars as a set of hoops, and the tie rod 8 is welded to the foundation steel bars and fastened with double butterfly buckles 9 to prevent the formwork from deforming and shifting.

[0027] The outer hoop 10 is fixedly connected to the wooden template 12 via the template support 11. The interior of the wooden template 12 is filled with concrete 13. Temperature measurement holes can be reserved in the concrete 13 for temperature measurement. From the first to the fourth day, the temperature measurement should be performed at least once every four hours; from the fifth to the seventh day, it should be performed at least once every eight hours; from the seventh day until the end of the temperature measurement, it should be performed at least once every twelve hours. The temperature data of each temperature measurement point should be recorded, including the surface and internal temperature of the concrete. The temperature change trend should be analyzed. The temperature difference between the inner and outer surfaces should not exceed 25°, the cooling rate should not exceed 2° / day, and the temperature difference between the concrete surface and the ambient temperature should not exceed 20°.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A super-thick mass concrete pie-shaped isolated foundation comprising a lower layer of reinforcement (1), characterized in that: The inner part of the lower layer reinforcing steel bars (1) is fixedly connected with support steel frames (2), the upper surface of the lower layer reinforcing steel bars (1) is fixedly connected with upper layer reinforcing steel bars (3), a plurality of cooling circulating water pipes (4) are fixedly connected between the support steel frames (2), the upper surface of the upper layer reinforcing steel bars (3) is fixedly connected with an annular frame (5), a plurality of threaded holes are formed in the surface of the annular frame (5), and a pre-buried piece (6) is threadedly connected in the inner part of each threaded hole.

2. The super-thick mass concrete pie-shaped independent foundation according to claim 1, characterized in that: The surface of the upper layer reinforcing steel bars (3) and the surface of the lower layer reinforcing steel bars (1) are fixedly connected with reinforcing steel hoop rings (7).

3. The super thick mass concrete pie-shaped independent foundation according to claim 1, characterized in that: The edges of the upper layer reinforcing steel bars (3) and the edges of the lower layer reinforcing steel bars (1) are fixedly connected with opposite pulling screw rods (8), and one end of each opposite pulling screw rod (8) is threadedly connected with a double butterfly buckle (9).

4. The super-thick mass concrete pie-shaped independent foundation according to claim 3, characterized in that: The opposite pulling screw rods (8) are fixedly connected with outer hoop rings (10) through the double butterfly buckles (9), and formwork supports (11) are clamped in the inner parts of the outer hoop rings (10).

5. The super-thick mass concrete pie-shaped independent foundation according to claim 4, characterized in that: The outer hoop rings (10) are fixedly connected with wood formworks (12) through the formwork supports (11), and the inner parts of the wood formworks (12) are poured with concrete (13).

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