Silo foundation and silo

Abstract

According to the silo foundation and the silo, the spherical shell made of reinforced concrete is adopted, the stress characteristic that the opening of the spherical surface of the spherical shell faces upwards is utilized, foundation counterforce is converted into membrane internal force, concrete materials of the spherical shell are subjected to in-plane pressure stress, the advantage that the reinforced concrete materials are good in pressure resistance is brought into full play, and the self stress mode is optimized; the thickness of the spherical shell is reduced, and the concrete work amount is effectively optimized. Meanwhile, supporting wing plates are arranged on the circumferential ring of the spherical shell so as to ensure the stability of the silo foundation, ring beams are arranged on the opening end face of the spherical shell along the circumferential ring and can bear the shell surface pressure of the spherical shell to be pulled, meanwhile, the vertical load of the silo body acts on the tops of the ring beams, and the upper load is evenly transmitted to the lower spherical shell; and meanwhile, enough reserved joint bars are arranged on the ring beam. The silo foundation adopts an integral prefabrication form, the advantages of factory prefabrication can be played, and line production and standardized production are adopted, so that the construction difficulty can be reduced, and the construction period can be shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of silos, and particularly relates to a silo foundation and a silo. Background Art

[0002] A silo is an upright container for storing bulk materials. As Figure 1 shown, it mainly consists of a silo foundation 01, a support structure 02 under the silo, a silo bottom 03, a silo wall 04, a silo top 05, a building 06 above the silo, etc. The shape of the silo foundation is usually circular or rectangular. The silo foundation is an important part of the silo structure, located below the ground and in direct contact with the foundation soil. Its main function is to transfer the upper load of the silo (including the self-weight of the silo, the weight of the stored material, the live load, and the self-weight of the foundation, etc.) to the foundation soil.

[0003] Currently, the design and construction of silo foundations usually adopt reinforced concrete structures, and the main forms are raft foundations or beam-raft foundations. The construction process includes foundation pit excavation, concrete cushion pouring, steel bar binding, formwork erection for the foundation, and foundation concrete pouring, etc. Subsequently, concrete curing, foundation pit backfilling, and superstructure construction are carried out.

[0004] However, the existing design and construction methods of silo foundations have the following main disadvantages:

[0005] 1. The material properties are not fully utilized: The compressive performance of reinforced concrete is much better than its flexural performance, while the existing design mainly relies on the flexural performance of reinforced concrete and fails to make full use of the compressive performance advantage of concrete, resulting in a large amount of work and insufficient optimization space.

[0006] 2. The construction period is long: The foundation construction process has many procedures and strict sequences, and each procedure is essential, resulting in a long construction period and being difficult to meet the current project's requirement for extremely compressed construction duration.

[0007] 3. The construction quality control is difficult: The on-site construction quality highly depends on the quality and experience of the operators, with large randomness, high quality control difficulty, and it is easy to lead to unstable construction effects. Summary of the Invention

[0008] The purpose of the present invention is to provide a silo foundation and a silo, with a simple structure, which can effectively optimize its own stress mode, reduce the construction difficulty, and shorten the construction period.

[0009] To solve the above technical problems, the present invention provides a silo foundation, including:

[0010] A spherical shell, the spherical shell is a spherical shell with an upward opening, the spherical shell is made of reinforced concrete, and the bottom of the spherical shell is used to contact the foundation soil;

[0011] Support wing plates, symmetrically arranged circumferentially on the outer side of the spherical shell to provide support;

[0012] Circular beam, arranged on the opening end face of the spherical shell;

[0013] Reserved inserted bars, arranged above the circular beam for connection with the silo body.

[0014] Optionally, in the above-mentioned silo foundation, the spherical shell, the support wing plates and the circular beam are of an integrally formed structure.

[0015] Optionally, in the above-mentioned silo foundation, the support wing plates are arranged at the outer opening edge of the spherical shell and are connected to the circular beam.

[0016] Optionally, in the above-mentioned silo foundation, the cross-sections of the spherical shell, the support wing plates and the circular beam are in an inverted Y shape.

[0017] Optionally, in the above-mentioned silo foundation, the spherical shell and the support wing plates are buried below the foundation, and a part of the circular beam and the reserved inserted bars are buried below the foundation and the other part is exposed above the foundation.

[0018] Optionally, in the above-mentioned silo foundation, the support wing plates are of a closed annular structure, and the support wing plates are arranged in a circle along the outer circumference of the spherical shell;

[0019] Or, the support wing plates are multiple supports, and the multiple supports are arranged at intervals in a circle along the outer circumference of the spherical shell.

[0020] Optionally, in the above-mentioned silo foundation, the circular beam is of a closed annular structure, and the circular beam is arranged in a circle above the opening end face of the spherical shell.

[0021] Optionally, in the above-mentioned silo foundation, the silo foundation is an axisymmetric structure.

[0022] The present invention also provides a silo, including the silo foundation as described in the above specific embodiment.

[0023] Optionally, in the above-mentioned silo, a silo body is arranged on the silo foundation, and the diameter of the silo body is not greater than 12 m.

[0024] The present invention provides a silo foundation, and its beneficial effects are as follows:

[0025] A spherical shell made of reinforced concrete utilizes the stress-bearing characteristics of the spherical shell with its opening facing upward on the spherical surface to convert the foundation reaction force into membrane internal force, enabling the concrete material of the spherical shell to be subjected to in-plane compressive stress, giving full play to the advantage of good compressive performance of the reinforced concrete material, optimizing its own stress-bearing mode, reducing the thickness of the spherical shell, and effectively optimizing the concrete engineering quantity. At the same time, support wing plates are arranged around the circumference of the spherical shell to ensure the stability of the silo foundation. A ring beam is arranged along the circumference at the opening end face of the spherical shell, which can bear the shell surface pressure of the spherical shell and be in tension. At the same time, the vertical load of the silo body acts on the top of the ring beam, evenly transmitting the upper load to the lower spherical shell, and sufficient reserved inserted steel bars are configured on the ring beam. The above silo foundation adopts an integral precast form, which can give play to the advantages of factory prefabrication, adopt flow operation and standardized production, thereby reducing the construction difficulty and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0027] Figure 1 FIG. 9 is a structural schematic diagram of a silo provided by the prior art;

[0028] Figures 2 - 3 FIG. 13 is a structural schematic diagram of a silo foundation provided by an embodiment of the present invention ( Figure 2 with dimension markings, Figure 3 dimensions not marked);

[0029] Figure 4 FIG. 21 is a partial enlarged view of the spherical shell, support wing plate and ring beam provided by an embodiment of the present invention;

[0030] Figure 5 FIG. 25 is a top view of a silo foundation provided by an embodiment of the present invention.

[0031] In Figure 1 :

[0032] 01 - Silo foundation;

[0033] 02 - Support structure under the silo;

[0034] 03 - Silo bottom;

[0035] 04 - Silo wall;

[0036] 05 - Silo top;

[0037] 06 - Building above the silo;

[0038] InFigures 2 - 5 In:

[0039] 100 - spherical shell;

[0040] 200 - supporting wing plate;

[0041] 300 - ring beam;

[0042] 400 - reserved inserted steel bars;

[0043] H1 - foundation embedment depth; H2 - wall thickness of the spherical shell; H3 - wall thickness of the silo body; D - diameter of the silo body; R - radius of the spherical shell; R1 - inner diameter of the ring beam; R2 - outer diameter of the ring beam; R3 - inner diameter of the supporting wing plate; R4 - outer diameter of the supporting wing plate. Specific embodiments

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0045] The core of the present invention is to provide a silo foundation and a silo, which have a simple structure, can effectively optimize their own stress modes, reduce the construction difficulty and shorten the construction period.

[0046] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0047] Specifically, please refer to Figure 2 、 Figure 3 and Figure 5 , a silo foundation provided by the present invention includes a spherical shell 100, a supporting wing plate 200, a ring beam 300 and reserved inserted steel bars 400.

[0048] The spherical shell 100 is a spherical shell with an upward opening. For example, the spherical shell can be a hemispherical shell or a spherical shell less than one - half. The concave surface of the spherical shell faces upward, and the convex surface faces the foundation. The bottom of the spherical shell 100 is used to contact the foundation soil to achieve support. The spherical shell is made of reinforced concrete and is the main load - bearing member of the entire silo foundation. It contacts the foundation soil below, transfers the load on the upper part of the silo foundation to the lower foundation, and at the same time bears the foundation reaction force and converts the foundation reaction force into the membrane internal force within the plane of the spherical shell 100. The membrane internal force is transmitted along the spherical shell 100 to the ring beam 300 arranged around the circumference.

[0049] It should be noted that the main parameters of the silo foundation are the radius R, the rise, and the thickness H2 of the spherical shell 100. If the radius R of the spherical shell 100 is too large, the horizontal thrust at the edge of the spherical shell 100 will increase. If the rise of the spherical shell 100 is too small, a large horizontal thrust will be generated. If the rise of the spherical shell 100 is too large, the mechanical performance advantages of the shell cannot be fully utilized. The thickness H2 of the spherical shell 100 is determined by the upper load conditions. When the load is large, the thickness H2 is larger, and when the load is small, the thickness H2 decreases accordingly. Therefore, the radius R, the rise, and the thickness H2 of the spherical shell 100 need to be calculated and determined according to different load conditions during the design process.

[0050] The support wing plates 200 are symmetrically arranged along the outer circumference of the spherical shell 100. Their main function is to ensure the stability of the silo foundation. When the upper load of the silo foundation is unevenly distributed, or when the wind load is large, it can ensure that the uneven settlement and inclination of the silo foundation are within the allowable range of the specification.

[0051] The ring beam 300 is arranged on the opening end face of the spherical shell 100 and is in tension under the shell surface pressure of the spherical shell 100. At the same time, the vertical load on the wall surface of the upper silo body acts on the top of the ring beam 300. Therefore, the cross-section of the ring beam 300 needs to have sufficient stiffness to evenly transfer the upper load to the lower spherical shell 100. At the same time, sufficient reserved inserted steel bars 400 need to be configured, and all of the above need to be calculated and determined according to the specific situation of the project.

[0052] The reserved inserted steel bars 400 are arranged above the ring beam 300 and are used to connect with the silo body. Since the silo foundation is precast as a whole, the reserved inserted steel bars 400 for the upper structure to be anchored into the silo foundation need to be reserved during the precasting process of the silo foundation. These reserved inserted steel bars 400 are the steel bars configured for the wall surface of the silo body (i.e., the bottom support structure of the silo). The diameter and spacing of the steel bars are determined according to the calculation results, and the anchorage length and the exposed length are reserved according to the requirements of the standard drawing. It should be noted that during the period from the completion of the precasting of the silo foundation to the construction of the upper structure, it is necessary to take good protective measures for the steel bars to avoid corrosion and other forms of damage, which may affect the subsequent normal use.

[0053] A silo foundation provided by this solution uses a spherical shell 100 made of reinforced concrete. Utilizing the stress-bearing characteristic that the opening of the spherical shell 100 faces upward, the foundation reaction force is transformed into membrane internal force, enabling the concrete material of the spherical shell 100 to be subjected to in-plane compressive stress, giving full play to the advantage of good compressive performance of the reinforced concrete material, optimizing its own stress-bearing mode, reducing the thickness of the spherical shell 100, and effectively optimizing the concrete project quantity. At the same time, support wing plates 200 are arranged on the circumference of the spherical shell 100 to ensure the stability of the silo foundation. A ring beam 300 is arranged along the circumference of the opening end face of the spherical shell 100, which can bear the shell surface pressure of the spherical shell 100 and be in tension. At the same time, the vertical load of the silo body acts on the top of the ring beam 300, evenly transmitting the upper load to the lower spherical shell 100. Meanwhile, sufficient reserved inserted steel bars 400 are arranged on the ring beam 300. The above silo foundation adopts an integral precast form, which can give play to the advantages of factory prefabrication, carry out continuous cyclic operations, and improve work efficiency; during the preliminary preparation process at the construction site, the foundation is precast synchronously, that is, factory prefabrication can be carried out simultaneously with the preliminary preparation work of on-site construction, eliminating processes such as on-site formwork erection, steel bar binding, concrete pouring, and concrete curing, greatly shortening the construction period and meeting the fast-paced construction requirements at the present stage. Factory prefabrication adopts flow operation and standardized production, which can minimize construction errors, ensure project quality, thereby reducing construction difficulty and shortening the construction period.

[0054] In addition, in the prior art, processes such as concrete pouring during silo construction will have a certain impact on the environment, which is contradictory to the current concept of low-carbon and environmental protection construction. However, the silo foundation in this case adopts the factory prefabrication method, eliminating the adverse effects such as dust and noise pollution on the surrounding environment caused by on-site construction, which conforms to the current concept of low-carbon and environmental protection.

[0055] To improve the structural strength, the spherical shell 100, the support wing plates 200, and the ring beam 300 are preferably an integrally formed structure, which can be specifically formed by integral pouring. The integrally formed silo foundation can better resist the vertical and horizontal loads from the silo and the materials stored therein, has overall stability and bearing capacity, and can better adapt to the changes in the foundation soil layer, and more effectively transmit the load of the silo evenly to the foundation soil layer. Of course, the integrally formed silo foundation can also simplify the construction process, reduce construction time and labor requirements.

[0056] In a specific embodiment, the support wing plates 200 are arranged at the outer edge of the opening of the spherical shell 100 and are connected to the ring beam 300. The support wing plates 200 are arranged at the edge of the spherical shell 100, which can better play the role of load transfer of the spherical shell 100. Further, as Figure 4As shown, the cross-sections of the spherical shell 100, the support wing plate 200, and the ring beam 300 are in an inverted Y shape. The inverted Y shape design can effectively disperse the load and reduce the concentrated stress, thereby improving the stability of the entire structure. This design is particularly effective when bearing a large load and can prevent the structure from being damaged due to excessive local stress.

[0057] In a specific embodiment, the spherical shell 100 and the support wing plate 200 are buried below the foundation. A part of the ring beam 300 and the reserved inserted steel bars 400 are buried below the foundation, and the other part is exposed above the foundation. As Figure 2 shown, the buried depth of the foundation is H1. The support wing plate 200 is not higher than the top end face of the spherical shell 100. The buried part of the silo foundation can more effectively transfer the load of the upper structure to the foundation. The reserved inserted steel bars 400 on the silo wall extend from underground to above the ground. Since the bearing capacity of the foundation soil is limited, by increasing the area of the silo foundation, the load can be dispersed over a larger foundation area, thereby reducing the unit area pressure of the foundation and making the bearing capacity meet the requirements of the base pressure, avoiding excessive settlement or damage of the foundation. The ring beam 300 and the reserved inserted steel bars 400 are exposed above the foundation for easy connection with the silo body.

[0058] Based on the above specific embodiment, in one form, the support wing plate 200 is a closed ring structure, and the support wing plate 200 is arranged in a circle along the outer circumference of the spherical shell 100. In another form, the support wing plate 200 is multiple supports, and the multiple supports are arranged in a circle at intervals along the outer circumference of the spherical shell 100.

[0059] In one form, the ring beam 300 is a closed ring structure, and the ring beam 300 is arranged in a circle above the open end face of the spherical shell 100. The reserved inserted steel bars 400 arranged inside the ring beam 300 are continuous.

[0060] In a specific embodiment, the silo foundation is an axisymmetric structure, which can achieve the uniformity of force transmission on the entire silo foundation.

[0061] In addition, this solution also provides a silo, including the silo foundation in the above specific embodiment. A silo body is arranged on the silo foundation, and the diameter D of the silo body is not greater than 12m.

[0062] The silo provided in this case relates to a circular silo of industrial structures. The diameter D of the silo body is usually designed to be not greater than 12 meters, and the silo foundation belongs to a form of precast natural foundation.

[0063] The form of the silo foundation is simple and has a small self-weight (less concrete consumption). Moreover, in most cases, the silo is a silo group composed of multiple single silos arranged jointly. The foundations of each single silo are exactly the same, with a large number, which can give play to the advantages of factory prefabrication and continuous cyclic operation.

[0064] In summary, in view of the obvious deficiencies of the existing silo foundation design and construction methods in terms of material performance utilization, construction efficiency, quality control, and environmental friendliness, this case provides a silo foundation and silo that can optimize material performance, shorten the construction period, improve construction quality, and reduce environmental impact, and is applicable to technical fields such as industry, logistics, and agriculture.

[0065] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0066] As shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of other identical elements in the process, method, commodity, or device including the element.

[0067] In the description of the present application, unless otherwise clearly defined, words such as setting, installing, and connecting should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0068] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0069] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A silo foundation, characterized in that: include: A spherical shell (100), wherein the spherical shell (100) is a spherical shell with an opening facing upward, the spherical shell is made of reinforced concrete, and the bottom of the spherical shell (100) is used to contact foundation soil; Support wing plates (200) are symmetrically arranged along the outer circumference of the spherical shell (100) to provide support; A ring beam (300) is arranged on the open end surface of the spherical shell (100); The reserved dowel bar (400) is arranged above the ring beam (300) and is used for connection with the silo body.

2. The silo foundation according to claim 1, characterized in that: The spherical shell (100), the supporting wing plate (200) and the ring beam (300) are an integrally formed structure.

3. The silo foundation according to claim 1, characterized in that: The supporting wing plate (200) is arranged at the outer edge of the opening of the spherical shell (100) and is connected to the ring beam (300).

4. The silo foundation according to claim 3, characterized in that: The cross-sections of the spherical shell (100), the supporting wing plate (200) and the ring beam (300) are in an inverted Y shape.

5. The silo foundation according to claim 1, characterized in that: The spherical shell (100) and the supporting wing plate (200) are buried under the foundation, and a portion of the ring beam (300) and the reserved dowel bars (400) are buried under the foundation and another portion is exposed above the foundation.

6. The silo foundation according to claim 1, characterized in that: The supporting wing plate (200) is a closed annular structure, and the supporting wing plate (200) is arranged in a circle along the outer circumference of the spherical shell (100); Alternatively, the supporting wing plate (200) is a plurality of supports, and the plurality of supports are arranged in a circle at intervals along the outer circumference of the spherical shell (100).

7. The silo foundation according to claim 1, characterized in that: The ring beam (300) is a closed annular structure, and the ring beam (300) is arranged in a circle above the open end surface of the spherical shell (100).

8. The silo foundation according to claim 1, characterized in that: The silo foundation is an axisymmetric structure.

9. A silo, characterized in that: Comprising the silo foundation according to any one of claims 1-8.

10. The silo according to claim 9, characterized in that A silo body is arranged on the silo foundation, and the diameter (D) of the silo body is not greater than 12m.

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