An above-ground and underground combined storage structure

Abstract

The present invention relates to the field of storage structures, aiming to solve the problems of small material storage capacity, high structural cost, and poor load-bearing capacity in the prior art, and provides a combined above-ground and underground storage repository structure, which includes a lower silo body and an upper dome; the silo side wall of the lower silo body is covered outside the wall of a conical pit with a large upper part and a small lower part formed by digging from the ground, and the silo side wall encloses a conical accommodation cavity; the upper dome is a thin-shell structure convex upward, and the upper dome defines an upper accommodation space; the upper dome covers the upper end opening of the conical accommodation cavity; the upper accommodation space and the conical accommodation cavity are communicated. The beneficial effect of the present invention is that it can use a structure with lower strength and load-bearing capacity to store and support more materials, and the stress condition of the storage structure is good.

Description

Technical Field

[0001] The present invention relates to the field of storage structures, and more particularly, to an above-ground and underground combined storage structure. Background Art

[0002] For traditional material storage, such as white sugar storage, structures such as above-ground circular thin-walled concrete silos, steel silos, and spherical tank silos are used. When facing the demand for ultra-large storage functions, due to the material pressure of a large amount of materials acting on the structure in the traditional structural form, excessive internal forces are generated in the silo side wall, resulting in an overly large cross-section of the silo side wall and excessive reinforcement, leading to extremely high construction costs; in earthquake-prone areas, the inertial forces generated by a large amount of materials during an earthquake cause the construction cost of the structure to increase exponentially or even become difficult to achieve; at the same time, since the storage of materials such as white sugar has relatively strict requirements for temperature, especially in high-temperature and arid areas, the entire silo body is exposed to the scorching sun, which not only generates a large temperature effect in the structure, increasing the structural cost, but also requires a large amount of electrical energy to cool the inside of the warehouse to meet the process temperature requirements, resulting in extremely high operating costs. Summary of the Invention

[0003] The present invention aims to provide an above-ground and underground combined storage structure to solve the problems of small material storage capacity, high structural cost, and poor load-bearing capacity in the prior art.

[0004] The embodiments of the present invention are implemented as follows:

[0005] An above-ground and underground combined storage structure, which can be used for storing granular or powdery materials such as white sugar, includes a lower silo body and an upper dome; the side wall of the lower silo body is covered outside the wall of a conical pit with a large top and a small bottom formed by digging underground, and the side wall encloses a conical accommodation cavity;

[0006] The upper dome is a thin-shell structure convex upward, and the upper dome defines an upper accommodation space; the upper dome covers the upper end opening of the conical accommodation cavity; the upper accommodation space and the conical accommodation cavity are communicated.

[0007] In this solution, the conical accommodation cavity located underground and the upper accommodation space located above ground defined by the structure are fully utilized to store more materials; moreover, the supporting force of the wall of the underground conical pit on the side wall of the silo and the pressure of the materials stored in the conical accommodation cavity balance and offset each other, reducing the requirement for the load-bearing capacity of the side wall structure of the silo itself, and no obvious internal force effect will be generated in the side wall structure of the silo. That is, a structure with lower strength and load-bearing capacity can be used to store and support more materials, and the stress condition of the storage structure is good.

[0008] In addition, the temperature in the underground part is relatively constant, which is beneficial to the storage of materials.

[0009] In this embodiment, the conical pit and the conical accommodation cavity can be conical or pyramidal. Moreover, the conical pit and the conical accommodation cavity do not have to be completely conical, but can be enlarged at their pointed tips to provide other structural configurations.

[0010] In one embodiment:

[0011] An annular foundation beam is provided along the side wall of the silo, and the upper dome is supported and connected to the annular foundation beam.

[0012] In one embodiment:

[0013] A pressure relief cone is provided at the middle position of the bottom of the conical accommodation cavity, and the pressure relief cone is a conical body with its tip facing upward. In this solution, by providing the pressure relief cone, the vertical pressure of the stored material on the bottom of the conical accommodation cavity can be partially decomposed and transferred to the side wall of the silo, thereby reducing the vertical pressure of the material concentrated at the bottom of the conical accommodation cavity, and the pressure distribution of the material is more reasonable.

[0014] In one embodiment:

[0015] The bottom wall of the conical accommodation cavity is horizontally arranged and is provided with a vertical discharge port;

[0016] A conveying channel is provided on the outer side of the side wall of the silo. The upper end of the conveying channel leads to the ground, and the lower end extends to a position corresponding to below the discharge port; a conveying device is provided in the conveying channel.

[0017] In one embodiment:

[0018] The conveying device includes a conveyor belt arranged along the conveying channel and a conveying trolley connected to the conveyor belt. The conveying trolley can receive materials from the discharge port and output them to the ground along the conveyor belt.

[0019] In one embodiment:

[0020] The side wall of the silo includes an upper conical section and a lower conical section connected up and down; the included angle between the lower conical section and the horizontal plane is greater than the included angle between the upper conical section and the horizontal plane.

[0021] In one embodiment:

[0022] The lower thickness of the upper dome is greater than the upper thickness.

[0023] In one embodiment:

[0024] The upper dome is arranged as a concrete thin-shell dome, and it is formed by the following construction method:

[0025] The coated fabric membrane material is fixed on the lower silo body;

[0026] Inflate the inside of the membrane and maintain a constant pressure inside the membrane as the construction load support;

[0027] Spray the bonding layer on the inner surface of the membrane;

[0028] Spray the polyurethane foam layer;

[0029] After binding the layered steel bars, spray concrete to form.

[0030] In one embodiment:

[0031] The lower bin body is formed through the following steps:

[0032] Excavate the foundation pit, initially spray and level, initially spray the structural layer, bind the bottom steel bars, spray the middle of the structural layer, bind the surface steel bars, and finally spray the structural layer. Brief Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings mentioned in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0034] Figure 1 Shows a schematic diagram of the above-ground and underground combined storage structure in the embodiments of the present invention;

[0035] Figure 2 For Figure 1 An enlarged view of part A of

[0036] Icons: Above-ground and underground combined storage structure 10, lower bin body 11, upper dome 12, bin side wall 13, pit wall 15, conical accommodation cavity 16, upper accommodation space 17, ring foundation beam 18, lower space 19, bin bottom wall 20, vertical support 21, bottom wall 22, discharge port 23, conveying channel 24, conveying device 25, conveyor belt 26, conveying trolley 27, opening and closing structure 28, pressure relief cone 29, upper conical section 30, lower conical section 31, highest material level line 33. Detailed Embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0039] Embodiment

[0040] Refer to Figure 1 and Figure 2 In this embodiment, a combined above-ground and underground storage structure 10 is proposed, which includes a lower storage body 11 and an upper dome 12. The storage side wall 13 of the lower storage body 11 is covered outside the pit wall 15 of a conical pit with a larger upper part and a smaller lower part formed by excavating from the ground, and the storage side wall 13 encloses a conical accommodation cavity 16. The upper dome 12 is a thin-shell structure convex upward, such as being set in the form of a spherical shell. The upper dome 12 defines an upper accommodation space 17. The upper dome 12 covers the upper end opening of the conical accommodation cavity 16. The upper accommodation space 17 and the conical accommodation cavity 16 are communicated. In this embodiment, a circular foundation beam 18 is provided along the upper edge of the storage side wall 13, and the upper dome 12 is supported and connected to the circular foundation beam 18.

[0041] In the combined above-ground and underground storage structure 10 of this solution, the conical accommodation cavity 16 located underground and the upper accommodation space 17 located above ground defined by the structure are fully utilized, and a relatively large amount of materials can be stored. Moreover, the supporting force of the pit wall 15 of the underground conical pit on the storage side wall 13 and the pressure of the materials stored in the conical accommodation cavity 16 balance and offset each other, reducing the requirement for the self-structural bearing capacity of the storage side wall 13, and no obvious internal force effect will be generated in the storage side wall 13 structure. That is, a structure with a lower strength and bearing capacity can be used to store and support a relatively large amount of materials, and the stress condition of the storage structure is good. In addition, the temperature of the underground part is relatively constant, which is beneficial to the storage of materials.

[0042] In this embodiment, the conical pit and the conical accommodation cavity 16 can be conical or pyramidal. Moreover, the conical pit and the conical accommodation cavity 16 do not have to be completely conical, but can be enlarged at their pointed cones to provide other structural configurations. As shown in the figure, the bottom of the conical pit is enlarged to form a lower space 19, and concrete wall structures are also constructed on the side wall and the bottom wall of the lower space 19. The bottom of the conical accommodation cavity 16 is defined by a horizontal storage bottom wall 20, and the storage bottom wall 20 is supported on the bottom wall 22 of the conical pit at intervals through vertical support bodies 21.

[0043] The bottom wall 20 of the silo is provided with a vertical discharge opening 23. A conveying channel 24 is formed on the outer side of the side wall 13 of the silo. The upper end of the conveying channel 24 leads out to the ground, and the lower end extends to a position corresponding to the lower part of the discharge opening 23. A conveying device 25 is arranged in the conveying channel 24. The lower end of the conveying device 25 can extend between the bottom wall 20 of the silo and the bottom wall 22 of the conical pit and correspond to the lower end of the discharge opening 23.

[0044] In this embodiment, the conveying device 25 can be arranged to include a conveyor belt 26 arranged along the conveying channel 24 and a conveying trolley 27 connected to the conveyor belt 26. The conveying trolley 27 can receive materials from the discharge opening 23 and output them to the ground along the conveyor belt 26.

[0045] Of course, as is well known to the public, the discharge opening 23 is only opened when discharging is required and is closed when not needed. To achieve the opening or closing function, an existing commonly used opening and closing structure 28 can be adopted, which will not be elaborated here.

[0046] In this embodiment, optionally, a pressure reducing cone 29 is arranged at the middle position of the bottom of the conical accommodating cavity 16. The pressure reducing cone 29 is a cone with a pointed end facing upwards. In this solution, by arranging the pressure reducing cone 29, the vertical pressure of the stored materials on the bottom of the conical accommodating cavity 16 can be partially decomposed and transferred to the side wall 13 of the silo, thereby reducing the vertical pressure of the materials concentrated at the bottom of the conical accommodating cavity 16 and making the pressure distribution of the materials more reasonable. The pressure reducing cone 29 can be arranged to be supported on the bottom wall of the channel steel.

[0047] In this embodiment, optionally, the side wall 13 of the silo includes an upper conical section 30 and a lower conical section 31 connected up and down. The included angle between the lower conical section 31 and the horizontal plane is greater than the included angle between the upper conical section 30 and the horizontal plane. For example, the included angle between the upper conical section 30 and the horizontal plane is set to 45°, and the included angle between the lower conical section 31 and the horizontal plane is set to 60°. This setting method is to improve the reasonable distribution of materials. The reason is that the material pressure in the upper part is relatively small, so the upper conical section 30 with a smaller included angle can bear a larger proportion of the material pressure. Relatively, the material pressure in the lower part is larger, and the larger included angle can reduce the proportion of the material pressure borne by the side wall 13 of the lower conical section 31, so that the pressure bearing condition of the entire side wall 13 of the silo is reasonable up and down.

[0048] In this embodiment, the lower thickness of the upper dome 12 is greater than the upper thickness. The demarcation line between the upper and lower parts can be the intersection line of the highest material level line 33 and the upper dome 12 to ensure that the thickness of the part of the upper dome 12 that may need to bear the material pressure is large enough.

[0049] The upper dome 12 in this embodiment is arranged as a concrete thin-shell dome, which is formed by the following method:

[0050] The coated fabric membrane material is fixed on the lower silo body 11, and specifically can be fixed on the annular foundation beam;

[0051] Inflate the inside of the membrane and maintain a constant pressure inside the membrane as the construction load support;

[0052] Spray the bonding layer on the inner surface of the membrane;

[0053] Spray the polyurethane foam layer;

[0054] After binding the layered steel bars, spray concrete to form the shape.

[0055] The lower silo body 11 in this embodiment is formed through the following steps: foundation pit excavation, initial spraying for leveling, initial spraying of the structural layer, binding of the bottom layer of steel bars, medium spraying of the structural layer, binding of the surface layer of steel bars, and final spraying of the structural layer. Of course, other common pouring methods can also be used for formation.

[0056] Case comparative analysis:

[0057] Taking the design of a storage repository with a storage function of 475,000 m3 in a general contracting project of a certain Egyptian sugar factory as an example, a comparative analysis between the traditional scheme and this scheme is carried out.

[0058] To meet the above requirements, when using a traditional ground storage, multiple concrete silos need to be designed simultaneously to meet the storage requirements. According to long-term experience, a circular ground storage with a diameter of 60 m has the best cost performance. If a circular ground storage with a diameter of 60 m and a height of 31 m is used as the comparison scheme, the thickness of the silo wall is 550 mm, the roof is a grid structure, and 3 underground corridors are used for transportation at the bottom of the silo. The storage capacity of a single silo is 98,810 m3, and 5 silos are required to meet the storage needs.

[0059] While using this scheme, one silo can solve the problem. The above-ground structure is a concrete thin-shell dome with a diameter of 124 m and a rise of 40 m, with a thickness of 0.15 m at the upper part and 0.46 m at the lower part (divided by the highest material level line); underground is a funnel-shaped concrete silo with the same diameter (124 m), a depth of 68 m, a thickness of 0.53 m, and an inclination angle of 45 degrees (60 degrees for a small section at the bottom) (see Figure 1 , Figure 2 ).

[0060] After calculation, the total concrete consumption of the traditional scheme is 36,930 m3, the total steel bar consumption is 7,668 tons, and the total roof steel structure consumption is 1,130 tons. While the engineering consumption of the new structural form is 16,532 m 3 , and 2,582 tons of steel bars.

[0061] While using this scheme, the concrete engineering consumption is about 44.8% of that of the traditional method, the steel bar consumption is 33.7% of that of the traditional method, and 1,130 tons of steel structure consumption is saved, greatly reducing the engineering quantity and thus reducing the investment cost.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An above - ground and underground combined storage structure, characterized in that: It includes a lower silo body and an upper dome; The silo side wall of the lower silo body is covered outside the wall of a conical pit with a larger top and a smaller bottom formed by excavation from the ground. The silo side wall encloses a conical accommodation cavity, and the conical accommodation cavity is located underground; The upper dome is a thin - shell structure convex upward. The upper dome defines an upper accommodation space, and the upper accommodation space is located above the ground; the upper dome covers the upper end opening of the conical accommodation cavity; The upper accommodation space and the conical accommodation cavity are connected; The bottom wall of the conical accommodation cavity is horizontally arranged and is provided with a vertical discharge port; A conveying channel is opened on the outer side of the silo side wall. The upper end of the conveying channel leads out to the ground, and the lower end extends to a position corresponding to below the discharge port; a conveying device is arranged in the conveying channel; The conveying device includes a conveyor belt arranged along the conveying channel and a conveying trolley connected to the conveyor belt. The conveying trolley can receive materials at the discharge port and output them to the ground along the conveyor belt; An annular foundation beam is arranged along the silo side wall, and the upper dome is supported and connected to the annular foundation beam.

2. The above - ground and underground combined storage structure according to claim 1, characterized in that: A pressure - reducing cone is arranged at the middle position of the bottom of the conical accommodation cavity, and the pressure - reducing cone is a cone with a pointed tip facing upward.

3. The above - ground and underground combined storage structure according to claim 1, characterized in that: The silo side wall includes an upper conical section and a lower conical section connected up and down; the included angle between the lower conical section and the horizontal plane is greater than the included angle between the upper conical section and the horizontal plane.

4. The above - ground and underground combined storage structure according to claim 1, characterized in that: The thickness of the lower part of the upper dome is greater than the thickness of the upper part.

5. The above - ground and underground combined storage structure according to any one of claims 1 - 4, characterized in that: The upper dome is set as a concrete thin - shell dome, and it is formed by the following construction method: A coated fabric membrane is fixed on the lower silo body; Inflate the inside of the membrane and maintain a constant pressure state inside the membrane as a construction load support; Spray a bonding layer on the inner surface of the membrane; Spray a polyurethane foam layer; Bind steel bars in layers and then spray - form concrete.

6. The above - ground and underground combined storage structure according to any one of claims 1 - 4, characterized in that: The lower silo body is formed by the following steps: Excavate the foundation pit, initially spray for leveling, initially spray the structural layer, bind the bottom - layer steel bars, spray the middle of the structural layer, bind the surface - layer steel bars, and finally spray the structural layer.

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