Large-diameter shallow silo without support dome full prefabricated structure

Abstract

This invention provides a fully prefabricated, unsupported dome structure for a large-diameter shallow circular silo. The prefabricated dome structure includes a prefabricated lower ring beam, a prefabricated upper ring beam, two ring beam supports, and several prefabricated dome panels. The outer diameter of the prefabricated upper ring beam is smaller than that of the prefabricated lower ring beam. The prefabricated lower ring beam is fixedly installed on the top of the silo wall. One end of the ring beam support is fixedly connected to the prefabricated lower ring beam, and the other end is fixedly connected to the prefabricated upper ring beam. The prefabricated dome panels are fan-shaped, with both ends of each panel fixed to the prefabricated upper and lower ring beams respectively. Adjacent dome panels are sealed together circumferentially to close the opening between the prefabricated upper and lower ring beams. The advantages of this invention are: the silo roof is fully prefabricated, eliminating the need for support frames and formwork, greatly improving construction progress, reducing high-altitude work, and improving component precision and construction quality by manufacturing all components in the factory, thus reducing the risk of leakage.

Description

Technical Field

[0001] This utility model relates to the field of shallow circular silo construction technology, specifically to a large-diameter shallow circular silo unsupported dome prefabricated structure. Background Technology

[0002] The construction of large-diameter shallow circular silos has always been a major challenge. The roof structure requires extensive formwork and scaffolding, and construction is significantly affected by factors such as working at heights, slope, shape variations, and trenches. Furthermore, the fluidity of concrete makes it highly susceptible to damage to the waterproofing and structural layers, severely impacting construction quality. Large-diameter shallow circular silos are generally quite tall; therefore, using conventional construction methods requires a large labor force and a lengthy construction period for erecting the roof support frame. Moreover, the erection, use, and dismantling of the roof support frame pose inherent risks; even slight mishaps could lead to collapse, causing mass casualties. After the support frame is erected, workers must then install formwork on it to pour the concrete for the silo roof.

[0003] Therefore, if the entire shallow circular silo roof is constructed using conventional techniques, there will be many construction procedures, high risks, and a lot of labor and time involved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a fully prefabricated, unsupported dome structure for a large-diameter shallow circular silo. By prefabricating the entire silo roof, the support frame and formwork are eliminated, greatly improving the construction progress and reducing high-altitude operations. At the same time, since all components are manufactured and processed in the factory, the precision of the components and the construction quality are improved, and the risk of leakage is reduced.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A prefabricated, unsupported dome structure for a large-diameter shallow circular silo includes a prefabricated lower ring beam, a prefabricated upper ring beam, two ring beam supports, and several prefabricated dome pieces. The outer diameter of the prefabricated upper ring beam is smaller than that of the prefabricated lower ring beam. The prefabricated lower ring beam is fixedly installed on the top of the silo wall. One end of each ring beam support is fixedly connected to the prefabricated lower ring beam, and the other end is fixedly connected to the prefabricated upper ring beam. The two ring beam supports are symmetrically arranged about the axis of the prefabricated upper ring beam. The prefabricated dome pieces are fan-shaped, and both ends of each prefabricated dome piece are fixed to the prefabricated upper ring beam and the prefabricated lower ring beam, respectively. Adjacent dome pieces are sealed together in the circumferential direction to close the opening between the prefabricated upper ring beam and the prefabricated lower ring beam.

[0007] The precast lower ring beam is divided into several segments in the circumferential direction.

[0008] The top surface of the precast upper ring beam and the top surface of the precast lower ring beam are both provided with first bolt holes, and the two ends of the precast dome piece are respectively fixed to the precast upper ring beam and the precast lower ring beam by bolts.

[0009] The shape and size of the enclosed area of ​​the ring beam support are adapted to the shape and size of the prefabricated dome piece, and a prefabricated dome piece is embedded and fixed in the enclosed area of ​​each ring beam support.

[0010] The prefabricated dome panel has a second bolt hole on its side, and adjacent dome panels are fixed together by bolts.

[0011] The sides of the precast dome panels are configured with tongue and groove structures, and adjacent precast dome panels are circumferentially spliced ​​together through the tongue and groove structures. The gaps between the tongue and groove structures of adjacent precast dome panels are filled with grout.

[0012] The portion of the precast dome panel erected on the precast lower ring beam has an avoidance groove for avoiding the top of the bolt and a grouting hole that connects to the avoidance groove and penetrates the top surface of the precast dome panel. The end face of the precast dome panel has a through opening that connects to the avoidance groove. Grouting material is filled in the avoidance groove and in the gap between the precast dome panel and the wall of the shallow circular silo.

[0013] The contact surfaces of the tongue-and-groove structures of adjacent prefabricated dome panels are sealed with epoxy resin.

[0014] Water-stop pads are provided between the ring beam support and the precast lower ring beam, and between the precast dome piece and the precast upper ring beam.

[0015] Grouting material is used to fill the space between the precast dome panel and the precast upper ring beam.

[0016] The advantages of this utility model are: by prefabricating the top of the shallow circular silo, the support frame and formwork are eliminated, which greatly improves the construction progress and reduces high-altitude operations. At the same time, since all components are manufactured and processed in the factory, the precision of the components and the construction quality are improved, and the risk of leakage is reduced. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the prefabricated lower ring beam in this utility model;

[0018] Figure 2 This is a schematic diagram of the prefabricated upper ring beam and ring beam support in this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection between the prefabricated lower ring beam and the prefabricated upper ring beam in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the prefabricated dome panel in this utility model;

[0021] Figure 5 This is a schematic diagram of the installation of the prefabricated dome panel in this utility model;

[0022] Figure 6 This is a schematic diagram of the fully prefabricated dome structure in this utility model;

[0023] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point A;

[0024] Figure 8 for Figure 6 Enlarged schematic diagram of the structure at point B;

[0025] Figure 9 This is a schematic diagram of the circumferential splicing of the prefabricated dome panels in this utility model. Detailed Implementation

[0026] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0027] like Figure 1-9 As shown in the figure, the markings represent: 1. Precast lower ring beam, 2. Precast upper ring beam, 3. Precast dome plate, 4. Ring beam support, 5. Warehouse wall, 6. Bolt, 7. Grouting hole, 8. Circumvention groove, 9. Through opening, 10. Grouting material, 11. Water-stop gasket, 12. Epoxy resin.

[0028] Example: Figure 1-9 As shown, this embodiment relates to a fully prefabricated, unsupported dome structure for a large-diameter shallow circular silo, used as the silo roof. The fully prefabricated dome structure includes a prefabricated lower ring beam 1, a prefabricated upper ring beam 2, two ring beam supports 4, and several prefabricated dome pieces 3. The outer diameter of the prefabricated upper ring beam 2 is smaller than the outer diameter of the prefabricated lower ring beam 1. The prefabricated lower ring beam 1 is fixedly installed on the top of the silo wall 5 of the shallow circular silo. One end of the ring beam support 4 is fixedly connected to the prefabricated lower ring beam 1, and the other end is fixedly connected to the prefabricated upper ring beam 2. The two ring beam supports 4 are symmetrically arranged about the axis of the prefabricated upper ring beam 2, that is, symmetrically arranged on both sides of the prefabricated upper ring beam 2. The prefabricated dome pieces 3 are fan-shaped, and the two ends of each prefabricated dome piece 3 are fixed to the prefabricated upper ring beam 2 and the prefabricated lower ring beam 1, respectively. Adjacent dome pieces are sealed together in the circumferential direction to close the opening between the prefabricated upper ring beam 2 and the prefabricated lower ring beam 1.

[0029] Therefore, by disassembling the top of the shallow circular silo into prefabricated upper ring beam 2, prefabricated lower ring beam 1, prefabricated dome plate 3, and ring beam support 4, and installing them by hoisting, and then sealing the connection between the components with bolts 6 and concrete grout 10, these components are all prefabricated, eliminating the need for support frames and formwork, greatly improving the construction progress, reducing high-altitude work, and improving the precision and construction quality of the components and reducing the risk of leakage because all components are manufactured and processed in the factory.

[0030] In this invention, the prefabricated lower ring beam 1 is divided into several segments in the circumferential direction. By dividing it circumferentially, each segment can be prefabricated separately, reducing manufacturing difficulty. Furthermore, the overall weight of the prefabricated lower ring beam 1 is evenly distributed, facilitating hoisting. Optionally, the prefabricated dome segments 3 are made by dividing the entire dome into several segments of the same size. The specific number can be determined according to actual needs, such as based on the maximum lifting capacity of the lifting equipment. For example, the number of prefabricated dome segments 3 is 16.

[0031] In this embodiment, optionally, both the prefabricated upper ring beam 2 and the prefabricated lower ring beam 1 are circular in shape, and the prefabricated upper ring beam 2 and the ring beam support 4 can be set separately or as an integral structure.

[0032] In this invention, the top surfaces of the precast upper ring beam 2 and the precast lower ring beam 1 are each provided with first bolt holes 6. The two ends of each precast dome piece 3 are respectively secured to the precast upper ring beam 2 and the precast lower ring beam 1 by bolts 6. In other words, by providing bolt holes 6 on the top surfaces of the precast upper ring beam 2, the precast lower ring beam 1, and both ends of the precast dome piece 3, the two ends of the precast dome piece 3 can be fixed to the precast upper ring beam 2 and the precast lower ring beam 1 by bolts 6 after the precast dome piece 3 is hoisted into place.

[0033] In some embodiments, the shape and size of the enclosed area of ​​the ring beam support 4 are adapted to the shape and size of the prefabricated dome piece 3, and a prefabricated dome piece 3 is embedded and fixed within the enclosed area of ​​each ring beam support 4. For example, the ring beam support 4 is a hollow frame, and the overall size of the frame is consistent with the size of the prefabricated dome piece 3, so that the prefabricated dome piece 3 can be embedded within it for coverage. Screw holes are provided on the ring beam support 4 for fixing the ring beam support 4 to the lower ring beam with screws.

[0034] In other embodiments, the prefabricated dome panel 3 is provided with a second bolt 6 hole on its side, and adjacent dome panels are locked and fixed by bolts 6.

[0035] In some embodiments, the sides of the prefabricated dome panels 3 are configured with tongue-and-groove structures, and adjacent prefabricated dome panels 3 are circumferentially spliced ​​together through these tongue-and-groove structures. The gaps between the tongue-and-groove structures of adjacent prefabricated dome panels 3 are filled with grout 10. Thus, the tongue-and-groove structures enable the prefabricated dome panels 3 to interlock, facilitating rapid installation, and the grout 10 provides a sealing effect. Optionally, the contact surfaces of the tongue-and-groove structures of adjacent prefabricated dome panels 3 are sealed with epoxy resin 12 to further improve the sealing effect of the spliced ​​surfaces.

[0036] In this embodiment, the portion of the precast dome piece 3 that is erected on the precast lower ring beam 1 has an avoidance groove 8 for avoiding the top of the bolt 6 and a grouting hole 7 that connects to the avoidance groove 8 and penetrates the top surface of the precast dome piece 3. The end face of the precast dome piece 3 is provided with a through opening 9, and the through opening 9 connects to the avoidance groove 8. Grouting material 10 is filled in the avoidance groove 8 and the gap between the precast dome plate and the wall 5 of the shallow circular silo. In other words, since the precast lower ring beam 1 is fixed to the top of the silo wall 5 of the shallow circular silo by bolts 6, when the precast dome piece 3 is placed on the precast lower ring beam 1, a clearance groove 8 can be opened to avoid the bolts 6. In order to achieve the sealing of this area, a grouting hole 7 can be opened on the part of the precast dome piece 3 that is placed on the precast lower ring beam 1, penetrating the top surface of the precast dome piece 3. The grouting hole 7 is connected to the clearance groove 8, and the through-hole 9 provided on the end face of the precast dome piece 3 is also connected to the clearance groove 8. Thus, the grouting material 10 can be injected through the grouting hole 7. After the grouting material 10 enters the clearance groove 8, it further flows through the through-hole 9 to all the gaps between the precast lower ring beam 1, the precast dome piece 3, and the silo wall 5 of the shallow circular silo. After filling, the sealing connection effect is achieved.

[0037] In some embodiments, water-stop gaskets 11 are provided between the ring beam support 4 and the precast lower ring beam 1, and between the precast dome piece 3 and the precast upper ring beam 2. The water-stop gaskets 11 ensure waterproofing. Optionally, the water-stop gaskets 11 are made of rubber.

[0038] In other embodiments, grout 10 is filled between the precast dome piece 3 and the precast upper ring beam 2 to achieve a sealing and waterproofing effect. Furthermore, since the precast dome piece 3 and the precast upper ring beam 2 are connected by bolts 6, grout 10 can also be filled at the bolt connection point for sealing.

[0039] The construction process of the fully prefabricated dome structure in this embodiment is as follows:

[0040] First, the top of the shallow circular silo is disassembled into prefabricated upper ring beam 2, prefabricated lower ring beam 1, prefabricated dome panels 3, and ring beam supports 4, which are prefabricated in the factory or on-site. Then, the segmented prefabricated lower ring beam 1 is hoisted to the top of the silo wall 5 using lifting equipment and spliced ​​together, and fixed to the top of the silo wall 5 with bolts 6. Next, the upper ring beam and ring beam supports 4 are hoisted. The upper ring beam and ring beam supports 4 can be made as a whole, or they can be spliced ​​and fixed first and then hoisted as a whole. The ring beam supports 4 are fixedly connected to the prefabricated lower ring beam 1 with bolts 6, thereby fixing the prefabricated upper ring beam 2. Then, the prefabricated dome panels 3 are installed one by one. The precast dome pieces are hoisted between the precast upper ring beam 2 and the precast lower ring beam 1 and fixed with bolts 6. The precast dome pieces 3 are spliced ​​and fixed in the circumferential direction. The contact surfaces of the tongue and groove structure of the precast dome pieces 3 are sealed with epoxy resin 12. After all the precast dome pieces 3 are installed, grouting material 10 is filled into the tongue and groove structure of all the splice joints of the precast dome pieces 3. The grouting material 10 is injected through the grouting hole 7. After entering the relief groove 8, the grouting material 10 flows through the through hole 9 to all the gaps between the precast lower ring beam 1, the precast dome pieces 3, and the silo wall 5 of the shallow circular silo, thereby realizing the construction of the unsupported prefabricated silo roof.

[0041] In summary, the beneficial effects of this utility model are: by prefabricating the roof of the shallow circular silo, the support frame and formwork are eliminated, which greatly improves the construction progress and reduces high-altitude operations. At the same time, since all components are manufactured and processed in the factory, the precision of the components and the construction quality are improved, and the risk of leakage is reduced.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “connected” or “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, which change accordingly when the absolute position of the described object changes.

[0043] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A prefabricated, unsupported dome structure for a large-diameter shallow circular silo, characterized in that: The prefabricated dome structure includes a prefabricated lower ring beam, a prefabricated upper ring beam, two ring beam supports, and several prefabricated dome pieces. The outer diameter of the prefabricated upper ring beam is smaller than that of the prefabricated lower ring beam. The prefabricated lower ring beam is fixedly installed on the top of the shallow circular silo wall. One end of the ring beam support is fixedly connected to the prefabricated lower ring beam, and the other end is fixedly connected to the prefabricated upper ring beam. The two ring beam supports are symmetrically arranged about the axis of the prefabricated upper ring beam. The prefabricated dome pieces are fan-shaped, and both ends of each prefabricated dome piece are fixed to the prefabricated upper ring beam and the prefabricated lower ring beam, respectively. Adjacent dome pieces are sealed together in the circumferential direction to close the opening between the prefabricated upper ring beam and the prefabricated lower ring beam.

2. The fully prefabricated dome structure according to claim 1, characterized in that, The precast lower ring beam is divided into several segments in the circumferential direction.

3. The fully prefabricated dome structure according to claim 1, characterized in that, The top surfaces of the precast upper ring beam and the precast lower ring beam are each provided with first bolt holes, and the two ends of the precast dome piece are respectively fixed to the precast upper ring beam and the precast lower ring beam by bolts.

4. The fully prefabricated dome structure according to claim 1, characterized in that, The shape and size of the enclosed area of ​​the ring beam support are adapted to the shape and size of the prefabricated dome piece, and a prefabricated dome piece is embedded and fixed in the enclosed area of ​​each ring beam support.

5. The fully prefabricated dome structure according to claim 1, characterized in that, The prefabricated dome panel has a second bolt hole on its side, and adjacent dome panels are fixed together by bolts.

6. The fully prefabricated dome structure according to claim 1, characterized in that, The sides of the precast dome panels are configured with tongue and groove structures, and adjacent precast dome panels are circumferentially spliced ​​together through the tongue and groove structures. The gaps between the tongue and groove structures of adjacent precast dome panels are filled with grout.

7. The fully prefabricated dome structure according to claim 3, characterized in that, The portion of the precast dome piece erected on the precast lower ring beam has an avoidance groove for avoiding the top of the bolt and a grouting hole that connects to the avoidance groove and penetrates the top surface of the precast dome piece. The end face of the precast dome piece is provided with a through opening that connects to the avoidance groove. Grouting material is filled in the avoidance groove and in the gap between the precast dome piece and the wall of the shallow circular silo.

8. The fully prefabricated dome structure according to claim 6, characterized in that, The contact surfaces of the tongue-and-groove structures of adjacent prefabricated dome panels are sealed with epoxy resin.

9. The fully prefabricated dome structure according to claim 1, characterized in that, Water-stop pads are provided between the ring beam support and the precast lower ring beam, and between the precast dome piece and the precast upper ring beam.

10. The fully prefabricated dome structure according to claim 1, characterized in that, Grouting material is used to fill the space between the precast dome panel and the precast upper ring beam.

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