Construction method of square cone hopper of silo

Abstract

The invention discloses a construction method for a square conical hopper of a silo. The construction method comprises the following steps that S1, a floor slab of an empty space of the silo is poured; s2, a tool type supporting frame is installed on the floor; then, two prefabricated concrete panels used for forming the side faces of the sides, close to each other, of the two adjacent conical hoppers are hoisted to the corresponding positions, the two ends of the prefabricated concrete panels are fixed to the floor slab and the tool type supporting frame correspondingly, and the width of the prefabricated concrete panels is smaller than that of the side faces of the conical hoppers; s3, according to the mode of the step S2, synchronous installation of the remaining side faces of the conical hoppers and the adjacent side faces of the conical hoppers is carried out, so that plate seams are formed between the side edges of the two adjacent side faces of the conical hoppers, and a cavity with an opening in the top is formed between the conical hoppers; s4, a formwork is erected at the slab joint, and micro-expansion concrete is poured; and then the cavity is filled with concrete. The construction process can be simplified, it is guaranteed that the gradients of the concrete cone hoppers are consistent, and the construction quality is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for a square cone-shaped silo. Background Technology

[0002] Shallow circular silos are an important component of modern warehousing facilities. Among them, the elevated silos, compared to ground-level silos, are designed to facilitate the removal of residual grain. For example, elevated silos with unloading ports on both sides of the central axis or using a single large conical hopper and multiple small conical hoppers allow grain to be transported away by a main conveyor along the central axis from below the silo. Even if it cannot flow completely by gravity, the residual grain is relatively less, resulting in higher unloading efficiency and easier cleaning. For elevated silos with multiple conical hoppers spaced at the bottom, the unique shape of the reinforced concrete conical hoppers presents significant construction challenges. On-site construction typically involves cast-in-place pouring, where scaffolding and formwork are erected and assembled on-site before pouring. However, the formwork is prone to deformation, leading to poor pouring accuracy and difficulty in controlling the appearance and quality of the concrete. Furthermore, the narrow space within the cavities formed by adjacent conical hoppers makes on-site formwork installation and dismantling difficult, resulting in a long construction period.

[0003] In view of this, it is necessary to design a construction method for square cone-shaped silos to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for a square cone silo that simplifies the construction process, ensures consistent slope of each concrete cone, and improves construction quality.

[0005] To achieve the above-mentioned objectives, this invention provides a construction method for a square conical silo, comprising the following steps: S1. Construct the floor slab of the silo's elevated floor; S2. According to the design drawings, install a tool-type support frame on the floor slab to provide support for the side of two adjacent cones that are close to each other. Then, install precast concrete panels to form the side of the cones. That is, hoist the two precast concrete panels used to form the side of two adjacent cones that are close to each other to the corresponding positions, and fix the two ends of the precast concrete panels to the floor slab and the tool-type support frame respectively. The width of the precast concrete panels is smaller than the width of the side of the cone. S3. Following the method of step S2, synchronously install the remaining side of the cone and the side of the cone adjacent to it, so that a plate gap is formed between the two adjacent sides of the cone, and a cavity with a top opening is formed between the cones. S4. After completing the installation of the precast concrete panels on the side of the cone, formwork is erected at the joints of the panels and micro-expansion concrete is poured; then, concrete is filled into the cavity.

[0006] As a further improvement of the present invention, in step S2, the width of the precast concrete panel is 100-300mm smaller than the width of the side of the cone.

[0007] As a further improvement of the present invention, in step S2, the tool-type support frame includes a frame body and two height-adjustable support parts located at both ends of the upper part of the frame body.

[0008] As a further improvement of the present invention, one end of the precast concrete panel is fixed to the floor slab and the other end is fixed to the support, so that two adjacent cone sides and the tool-type support frame form two interconnected triangular structures.

[0009] As a further improvement of the present invention, in step S1, short steel bar ends are pre-embedded before the floor slab is poured for connection with the reserved steel bars reserved on the precast concrete panel.

[0010] As a further improvement of the present invention, in step S2, when installing the precast concrete panel, an elevation adjustment shim is installed at the bottom of the precast concrete panel so that the tops of each precast concrete panel that makes up the cone are flush.

[0011] As a further improvement of the present invention, in step S4, the pouring of micro-expansion concrete specifically involves: double-sided formwork at the joint of the slab, followed by pouring micro-expansion concrete with a strength higher than that of the precast concrete panel, and then vibrating it to compact it.

[0012] As a further improvement of the present invention, in step S4, the tool-type support frame is removed before concrete filling.

[0013] As a further improvement of the present invention, the concrete used for filling in step S4 is lightweight concrete.

[0014] As a further improvement of the present invention, in step S4, after the concrete filling of the cavity is completed, a ventilation slot is installed at the opening at the top of the cavity.

[0015] The beneficial effects of this invention are: 1. Compared with the traditional process of "first setting up the formwork and pouring the cavity, then setting up the formwork and pouring the cone", this invention first installs a precast concrete panel to form the side wall of the cone, and then uses the precast concrete panel as the outer formwork for subsequent cavity pouring. This method can achieve the comprehensive effect of eliminating a formwork and support system, reducing construction difficulty, shortening the construction period, saving labor, and significantly improving the appearance of the cone.

[0016] 2. This invention utilizes precast concrete panels to form the sides of a cone, with the width of the precast concrete panels being smaller than the width of the cone's sides. On one hand, this allows for the formation of a joint between the sides of two adjacent sides of the cone. This joint serves as a bonding and fixing space, and by pouring micro-expansion concrete at the joint, the four precast concrete panels are quickly solidified into an integral structure. This method is simple to operate and has low construction difficulty. On the other hand, it ensures that when constructing another adjacent side of the cone, there is sufficient space between the precast concrete panels forming the two adjacent sides of the cone. This prevents damage to the precast concrete panels caused by collisions when installing another precast concrete panel adjacent to the current one on the cone, thus ensuring the structural integrity of the final cone.

[0017] 3. This invention utilizes a tool-type support frame to simultaneously provide support for the side of two adjacent cones that are close to each other, so as to carry out the side construction of the two adjacent cones that are close to each other at the same time. This method can improve the consistency of the slope surface of adjacent cones, improve the stability of the construction process, and ensure the construction quality. Attached Figure Description

[0018] Figure 1 A schematic diagram showing the completed construction of the square cone-shaped silo.

[0019] Figure 2 This is a structural schematic diagram of a precast concrete panel.

[0020] Figure 3 A schematic diagram of the construction process of a square cone-shaped silo. Figure 1 .

[0021] Figure 4 This is a magnified view of point A.

[0022] Figure 5 A schematic diagram of the construction process of a square cone-shaped silo. Figure 2 .

[0023] Figure 6 A schematic diagram showing the completion of construction of a single cone bucket.

[0024] Figure Labels 10. Floor slab; 20. Precast concrete panel; 21. Reserved steel reinforcement; 22. Sleeve; 31. Rectangular frame; 32. Diagonal brace; 33. Support section; 331. First rod section; 332. Second rod section; 3331. Vertical rod; 3332. Top support; 34. Support foot; 40. Elevation adjustment shim; 51. Slab joint; 52. Cavity; 60. Grain unloading hole; 70. Ventilation slot. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0027] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] like Figures 1-6 As shown, the present invention provides a construction method for a square conical silo, comprising the following steps: S1. Based on the shape characteristics of the square cone, the periphery of the cone is divided into four sections, i.e., four sides, and precast concrete panels that are compatible with the sides of the cone are prefabricated in the factory. S2. Pour the floor slab 10 of the silo overhead floor, wherein, before pouring the floor slab 10, a short steel bar head is pre-embedded for connection with the reserved steel bar 21 reserved on the precast concrete panel 20. S3. According to the design drawings, install a tool-type support frame on the floor slab 10 to provide support for the side of two adjacent cones that are close to each other. Then, install precast concrete panels 20 to form the side of the cones. That is, the two precast concrete panels 20 used to form the side of two adjacent cones that are close to each other are hoisted to the corresponding positions, and the two ends of the precast concrete panels 20 are fixed to the floor slab 10 and the tool-type support frame respectively. The width of the precast concrete panels 20 is smaller than the width of the side of the cone. S4. Following the method of step S3, the remaining side of the cone and the side of the cone adjacent to it are installed synchronously, so that a plate gap 51 is formed between the sides of the two adjacent sides of the cone, and a cavity 52 with a top opening is formed between the cones. S5. After the precast concrete panel 20 on the side of the cone is installed, formwork is erected at the joint 51 and micro-expansion concrete is poured; then, concrete is filled into the cavity 52.

[0029] For example, the width of the precast concrete panel 20 is 100-300 mm smaller than the width of the cone side, and the width of the panel gap 51 between any adjacent sides of the cone is equal. Figure 6By making the width of the precast concrete panel 20 smaller than the width of the cone's side, for a single cone, after the installation of the four precast concrete panels 20 that make up its perimeter is completed, the four precast concrete panels 20 can be formed into an integral structure by pouring micro-expansion concrete at the joint 51. That is, the joint 51 is used as a bonding and fixing space, which is simple to operate and can quickly solidify the side of the cone into an integral structure. In addition, when constructing another adjacent side of the cone, there is extra space between the precast concrete panels 20 that make up the two adjacent sides of the cone. This avoids damage to the precast concrete panels 20 due to collisions when installing another precast concrete panel 20 adjacent to the current precast concrete panel 20 on the cone after the current precast concrete panel 20 is installed, thereby ensuring the structural integrity of the final cone.

[0030] In addition, by making the width of the precast concrete panel 20 100-300mm smaller than the width of the cone side, it is possible to avoid the large amount of subsequent micro-expansion concrete pouring caused by the excessive difference in width between the precast concrete panel 20 and the cone side, thus increasing the workload. It is also possible to avoid the vibration effect after the micro-expansion concrete is poured being affected by the small difference in width between the precast concrete panel 20 and the cone side, thereby improving the convenience of construction.

[0031] For example, such as Figure 4 As shown, a sleeve 22 is pre-embedded in the precast concrete panel 20 to facilitate connection and fixation with the tool-type support frame.

[0032] For example, such as Figure 3 and Figure 4As shown, the tool-type support frame includes a frame body and two height-adjustable support parts 33 located at both ends of the upper part of the frame body. The frame body includes a rectangular frame 31 and diagonal rods 32 connecting the lower left and upper right corners of the rectangular frame 31. The support parts 33 are located at both ends of the upper part of the rectangular frame 31. The support parts 33 include a first rod part 331 and a second rod part 332 threaded onto the first rod part 331 and connected to the first rod part 331. The first rod part 331 is connected to the rectangular frame 31. By rotating the second rod part 332, the second rod part 332 moves up and down relative to the first rod part 331 inside the first rod part 331, thereby adjusting the height of the second rod part 332 relative to the first rod part 331 and thus adjusting the height of the support parts 33. The support 33 is equipped with a top support structure adapted to the sleeve 22 of the precast concrete panel 20. The top support structure includes a vertical rod 3331 connected to the second rod 332 via a bearing, and a top support 3332 located at the end of the vertical rod 3331 away from the second rod 332. This ensures that the top support 3332 always faces the sleeve 22 when adjusting the height of the second rod 332. The top support 3332 has pre-drilled bolt holes for easy bolt passage, allowing connection between the top support 3332 and the sleeve 22 via bolts. The top support 3332 is hinged to the vertical rod 3331, making its angle adjustable. Regarding the threaded connection between the first rod 331 and the second rod 332, a reasonable thread pitch setting allows the second rod 332 to self-lock after adjustment.

[0033] The bottom of the rectangular frame 31 is provided with a support foot 34, which is height adjustable. The height adjustment setting of the support foot 34 is the same as that of the support part 33, and will not be described again here.

[0034] This invention utilizes a tool-type support frame to simultaneously provide support for the side of two adjacent cones that are close to each other, so as to carry out the side construction of the two adjacent cones on the side that are close to each other at the same time. This method can improve the consistency of the slope surface of adjacent cones and ensure the construction quality.

[0035] One end of the precast concrete panel 20 is fixed to the floor slab 10, and the other end is fixed to the support part 33, so that the two adjacent cone sides and the tool-type support frame form two interconnected triangular structures. This connection method can ensure the support stability of the cone sides by using the triangular structure, and can also make the adjacent cones symmetrical during construction, thereby improving the stability of the construction process, reducing the stability requirements of the tool-type support frame, and reducing the construction difficulty. At the same time, the setting of the two triangular structures can also connect the adjacent cone sides to form a whole, thereby improving the support stability of the tool-type support frame for the precast concrete panel 20.

[0036] For example, in step S3, when installing the precast concrete panel 20, an elevation adjustment shim 40 is installed at the bottom of the precast concrete panel 20. Figure 3 ( ), so that the tops of the precast concrete panels 20 that make up the periphery of the cone are flush.

[0037] For example, in step S5, after the installation of the precast concrete panel 20 on the side of the cone is completed, the reserved steel bars 21 between the precast concrete panels 20 on the four sides of the cone are tied to make the steel bars firmly connected.

[0038] The specific pouring process for micro-expansion concrete is as follows: double-sided formwork is erected at joint 51 of the slab, and then micro-expansion concrete with a strength higher than 20 of the precast concrete panel is poured and compacted by vibration; after the micro-expansion concrete pouring is completed, a plastic film is laid on the surface of the micro-expansion concrete and water is sprinkled for curing.

[0039] After the micro-expansion concrete reaches the predetermined strength, the tool-type support frame is removed, and lightweight concrete is filled into the cavity 52.

[0040] Micro-expansion concrete is concrete with a 14-day restricted expansion rate in water of less than 0.015%; lightweight concrete is concrete with an apparent density of less than 1950 kg / m³.

[0041] For example, after the concrete filling of cavity 52 is completed, a ventilation slot 70 is installed at the opening at the top of cavity 52. Figure 5 ). Figure 6 The square cone bucket with a grain unloading hole 60 in the center can quickly complete the construction of multiple spaced cone buckets at the bottom of the silo (empty silo) according to the construction method of the present invention, and ensure the construction quality. Among them, the tool-type support frame can be quickly assembled, neatly stacked after disassembly, and reused in the next project, achieving the technical effect of multiple reuses.

[0042] When construction reaches the side where only a single cone needs to be worked on, a single precast concrete panel 20 can be installed after installing the tool-type support frame.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A construction method for a square conical silo, characterized in that, Includes the following steps: S1. Construct the floor slab of the silo's elevated floor; S2. According to the design drawings, install a tool-type support frame on the floor slab to provide support for the side of two adjacent cones that are close to each other. Then, install precast concrete panels to form the side of the cones. That is, hoist the two precast concrete panels used to form the side of two adjacent cones that are close to each other to the corresponding positions, and fix the two ends of the precast concrete panels to the floor slab and the tool-type support frame respectively. The width of the precast concrete panels is smaller than the width of the side of the cone. S3. Following the method of step S2, synchronously install the remaining side of the cone and the side of the cone adjacent to it, so that a plate gap is formed between the two adjacent sides of the cone, and a cavity with a top opening is formed between the cones. S4. After completing the installation of the precast concrete panels on the side of the cone, formwork is erected at the joints of the panels and micro-expansion concrete is poured; then, concrete is filled into the cavity.

2. The construction method of the square conical silo according to claim 1, characterized in that: In step S2, the width of the precast concrete panel is 100-300mm smaller than the width of the cone side.

3. The construction method of the square conical silo according to claim 1, characterized in that: In step S2, the tool-type support frame includes a frame body and two height-adjustable support parts located at both ends of the upper part of the frame body.

4. The construction method of the square cone silo according to claim 3, characterized in that: One end of the precast concrete panel is fixed to the floor slab and the other end is fixed to the support, so that the sides of two adjacent cones and the tool-type support frame form two interconnected triangular structures.

5. The construction method of the square conical silo according to claim 1, characterized in that: In step S1, short steel bar ends are pre-embedded before the floor slab is poured for connection with the reserved steel bars reserved on the precast concrete panel.

6. The construction method of the square cone silo according to claim 1, characterized in that: In step S2, when installing the precast concrete panels, elevation adjustment shims are installed at the bottom of the precast concrete panels to make the tops of each precast concrete panel that makes up the cone flush.

7. The construction method of the square conical silo according to claim 1, characterized in that: In step S4, the pouring of micro-expansion concrete specifically involves: double-sided formwork at the joint of the slab, followed by pouring micro-expansion concrete with a strength higher than that of the precast concrete panel, and then vibrating it to compact it.

8. The construction method of the square conical silo according to claim 1, characterized in that: In step S4, before filling with concrete, the tool-type support frame is removed.

9. The construction method of the square conical silo according to claim 1, characterized in that: The concrete used for filling in step S4 is lightweight concrete.

10. The construction method of the square conical silo according to claim 1, characterized in that: In step S4, after the concrete filling of the cavity is completed, a ventilation slot is installed at the opening at the top of the cavity.

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