A shallow silo construction system

Abstract

This invention provides a construction system for shallow circular silo structures, solving the problem of difficult formwork erection for the silo roof during construction. The invention includes a first outer formwork, a first inner formwork, and a silo roof frame, all vertically spaced on the ground. The silo roof frame includes radially arranged longitudinal beams and multiple arc-shaped transverse beams spaced between adjacent longitudinal beams. One end of each longitudinal beam is inserted between and detachably connected to the first outer and inner formwork. A second inner formwork is detachably connected to the top of the first inner formwork, supporting the bottom of the silo roof frame and sealing the gap at the bottom. The end of the second inner formwork furthest from the first inner formwork is fixedly connected to the lower end of the first end plate of the annular plate structure. During construction, there is no need to construct an ultra-high support system for the silo roof formwork, and the walls and silo roof can be cast integrally, saving time.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a shallow circular silo structure construction system. Background Technology

[0002] With the continuous advancement of modern industrial and civil construction technologies, large-diameter shallow circular silos have become widely used as important storage facilities in various industries such as coal, grain, and chemicals. These silos not only require large storage capacity but also need to meet requirements such as structural stability, ease of construction, and convenient maintenance. In recent years, with the increasing demand for storage, the diameter and height of large-diameter shallow circular silos have also tended to be larger, posing greater challenges to the construction of the silo roof structure. Currently, the walls of shallow circular silos are mainly constructed using slipform construction. When the silo roof structure is constructed after the wall structure is completed, the construction of the roof structure is difficult due to the conical shell-shaped reinforced concrete structure and its characteristics of high-altitude, large-span, and heavy-load construction, which requires ultra-high formwork. This makes the construction of the roof formwork system of shallow circular silos quite difficult, and the assembly and disassembly are also quite troublesome. Moreover, the roof formwork system occupies space inside the silo after it is built, which will also affect the construction inside the silo, resulting in a slow construction progress. Utility Model Content

[0003] To address the difficulty in constructing the formwork system for the top of shallow circular silos during construction, as described in the background art, this utility model proposes a construction system for shallow circular silos.

[0004] The technical solution of this utility model is: a shallow circular silo structure construction system, including a first outer template, a first inner template and a silo top frame vertically spaced on the ground. The opposite sides of the first outer template and the first inner template are supported by diagonal braces, one end of which is supported on the ground. A cast-in-place wall is formed between the first outer template and the first inner template. The silo roof frame includes radially evenly arranged longitudinal beams and multiple arc-shaped transverse beams spaced between adjacent longitudinal beams. One end of the longitudinal beam is inserted between the first outer formwork and the first inner formwork and is detachably connected to the first outer formwork and the first inner formwork. One end of the longitudinal beam is pre-embedded in the cast-in-place wall. The top of the first inner template is detachably connected to the second inner template. The second inner template is supported at the bottom of the silo top frame and seals the gap at the bottom of the silo top frame. The end of the second inner template away from the first inner template is fixedly connected to the lower end of the first end plate of the ring plate structure. The end of the longitudinal beam away from the first inner template abuts against the outside of the first end plate, and the top of the first end plate is higher than the highest point of the silo top frame. The inner side of the first end plate encloses and forms a grain inlet that is open from top to bottom. The top of the second inner formwork is cast with a cast-in-place silo roof covering the silo roof frame, and the highest point of the cast-in-place silo roof is flush with the top of the first end plate.

[0005] Preferably, tie bolts are provided on the upper part of the first outer template and the first inner template; A third connecting plate is fixedly installed at the outer end of the longitudinal beam, and a vertically installed fourth connecting plate is fixedly installed at the bottom of the third connecting plate. The fourth connecting plate has screw holes and is sleeved on the tie bolts through the screw holes. The fourth connecting plate is embedded in the cast-in-place wall.

[0006] Preferably, a second outer formwork is provided above the top frame of the silo, one end of the second outer formwork is detachably connected to the top of the first end plate, and a gap is formed between the second outer formwork and the top frame of the silo for concrete to flow through. The end of the second outer template furthest from the first end plate is detachably connected to the first outer template, so that a connected cast-in-place cavity is formed between the second outer template and the second inner template, and between the first outer template and the first inner template; The top of the second outer formwork is equipped with a grouting cylinder with an upper opening that communicates with the cast-in-place cavity.

[0007] Preferably, the top of the silo frame is provided with multiple concentric arc-shaped guide plates at intervals; The bottom of the arc-shaped guide plate is fixedly connected to the top of the crossbeam and the longitudinal beam. The opening positions of adjacent arc-shaped guide plates are staggered, and the top of the arc-shaped guide plate is flush with the upper surface of the cast-in-place silo top.

[0008] Preferably, the longitudinal beams of the silo roof frame include a horizontally arranged first longitudinal beam and an inclined second longitudinal beam. The first and second longitudinal beams are fixedly connected at one end, and a crossbeam connects each of the two adjacent first longitudinal beams and the two adjacent second longitudinal beams. The second outer template and the second inner template are conical frustum-shaped structures adapted to the shape of the silo roof frame.

[0009] Preferably, the center of the lower port of the grouting cylinder is located on the circular boundary line where the first longitudinal beam and the second longitudinal beam are connected.

[0010] Advantages of this invention: During construction, the first outer formwork, first inner formwork, silo roof frame, second inner formwork, and second outer formwork can be detachably connected as a single unit, forming a connected cast-in-place cavity between the second outer formwork and second inner formwork, and between the first outer formwork and first inner formwork. This eliminates the need for an ultra-high support system at the bottom of the silo roof formwork, saving construction time. Furthermore, during pouring, the walls and silo roof can be cast as a single unit, further saving construction time and resulting in better structural strength after the walls and silo roof are formed. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the main structure of Example 1; Figure 2 for Figure 1 A schematic diagram of the structure of the silo roof frame; Figure 3 for Figure 2 A top-view structural diagram of the silo roof frame; Figure 4 for Figure 1 Enlarged view of the structure at point A in the image; Figure 5 for Figure 1 Enlarged view of the structure at point B in the image; In the diagram, 1. Ground, 2. First outer formwork, 3. First inner formwork, 4. Diagonal brace, 5. Cast-in-place wall, 6. Second inner formwork, 601. First end plate, 602. First connecting plate, 603. Second connecting plate, 7. Second outer formwork, 701. Second end plate, 8. Grouting cylinder, 9. Silo roof frame, 10. First longitudinal beam, 11. Second longitudinal beam, 12. Horizontal beam, 13. Arc-shaped guide plate, 14. Grain inlet, 15. Connecting rod, 16. Third connecting plate, 17. Fourth connecting plate, 18. Tie bolt. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example 1: A construction system for a shallow circular silo structure, such as Figure 1 As shown, it includes a first outer formwork 2, a first inner formwork 3 and a silo roof frame 9, which are vertically spaced on the ground 1. The opposite sides of the first outer formwork 2 and the first inner formwork 3 are supported by diagonal braces 4. One end of the diagonal braces 4 is supported on the ground 1. A cast-in-place wall 5 is formed between the first outer formwork 2 and the first inner formwork 3.

[0015] like Figure 2 and Figure 3As shown, the silo roof frame 9 includes radially evenly arranged longitudinal beams. The longitudinal beams include horizontally arranged first longitudinal beams 10 and inclined second longitudinal beams 11, with one end of the first longitudinal beams 10 and the second longitudinal beams 11 fixedly connected. Multiple spaced crossbeams 12 are fixedly connected between each two adjacent first longitudinal beams 10 and each adjacent two adjacent second longitudinal beams 11. The crossbeams 12 are arc-shaped rod structures.

[0016] like Figure 5 As shown, the end of the second longitudinal beam 11 away from the first longitudinal beam 10 is fixedly connected to the top of the connecting rod 15. The lower end of the connecting rod 15 is fixedly provided with a third connecting plate 16. The bottom of the third connecting plate 16 is fixedly provided with a vertically arranged fourth connecting plate 17. The fourth connecting plate 17 is provided with screw holes.

[0017] The top of the first inner template 3 is detachably connected to a second inner template 6. The second inner template 6 supports the bottom of the silo roof frame 9 and seals the gap at the bottom of the silo roof frame 9. The top of the first outer template 2 is detachably connected to a second outer template 7, so that a connected cast-in-place cavity is formed between the second outer template 7 and the second inner template 6, and between the first outer template 2 and the first inner template 3. The second outer template 7 and the second inner template 6 are conical frustum-shaped structures adapted to the shape of the silo roof frame 9. Specifically, as shown... Figure 5 As shown, a second connecting plate 603 with an L-shaped cross-section is fixedly provided at the bottom of the second inner template 6. The second connecting plate 603 is an annular plate structure with its ends connected. The second connecting plate 603 is placed on top of the first inner template 3. A second end plate 701 with a Z-shaped cross-section is fixedly connected to the end of the second outer template 7. The second end plate 701 is placed on top of the first outer template 2.

[0018] Tie bolts 18 are installed on the second end plate 701, the first outer template 2, the first inner template 3, and the second connecting plate 603. The fourth connecting plate 17 is fitted onto the tie bolts 18 through screw holes and is embedded in the cast-in-place wall 5.

[0019] like Figure 4 As shown, the end of the second inner template 6 away from the first inner template 3 is fixedly connected to the lower end of the first end plate 601 of the annular plate structure. The end of the longitudinal beam away from the first inner template 3 abuts against the outer side of the first end plate 601, and the top of the first end plate 601 is higher than the highest point of the silo top frame 9. The inner side of the first end plate 601 encloses and forms a grain inlet 14 that is open from top to bottom.

[0020] The inner side of the first end plate 601 is fixedly connected to the first connecting plate 602. The end of the second outer template 7 away from the first inner template 3 extends to the top of the first connecting plate 602 and is bolted to the first connecting plate 602, so that a gap is formed between the second outer template 7 and the top frame 9 for concrete to flow through.

[0021] To facilitate the integrated casting of the roof and walls 5, and to ensure that the concrete flowing from the second inner formwork 6 into the space between the first outer formwork 2 and the first inner formwork 3 fills as much of the space as possible between each longitudinal and transverse beam 12, in this embodiment, as... Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the top of the silo roof frame 9 is provided with multiple concentric arc-shaped guide plates 13 at intervals. The bottom of the arc-shaped guide plates 13 is fixedly connected to the top of the crossbeam 12 and the longitudinal beam. The opening positions of adjacent arc-shaped guide plates 13 are staggered, and the top of the arc-shaped guide plates 13 is flush with the upper surface of the cast-in-place silo roof.

[0022] The top of the second inner formwork 6 is cast with a cast-in-place silo roof covering the silo roof frame 9, and the highest point of the cast-in-place silo roof is flush with the top of the first end plate 601.

[0023] The top of the second outer formwork 7 is provided with a grouting cylinder 8 with an upper opening that communicates with the cast-in-place cavity. The center of the lower port of the grouting cylinder 8 is located on the circular boundary line where the first longitudinal beam 10 and the second longitudinal beam 11 are connected.

[0024] Working principle: During construction, the first outer formwork 2 and the first inner formwork 3 are first installed on the ground 1, and diagonal braces 4 are set on the opposite sides of the first outer formwork 2 and the first inner formwork 3 for support.

[0025] After the silo roof frame 9 is fabricated on the ground, the second inner template 6 is first hoisted to the inside of the first outer template 2, and the second inner template 6 is fixed to the first outer template 2 by the screws of the tie bolts 18. Then the silo roof frame 9 is hoisted onto the second inner template 6. By moving the screws of the tie bolts 18, the fourth connecting plate 17, the second inner template 6, the first outer template 2, and the first inner template 3 at the bottom of the silo roof frame 9 are connected as one unit. Then, the second outer template 7 is hoisted to the top of the second inner template 6, the first outer template 2, and the first inner template 3. The threaded rod of the tie bolt 18 is moved again to connect the second end plate 701 at the bottom of the fourth connecting plate 17, the second inner template 6, the first outer template 2, the first inner template 3, and the second outer template 7 into one unit. The nut of the tie bolt 18 is then fitted onto its threaded rod, forming a shape as shown in the image. Figure 5 The structure shown.

[0026] The second outer template 7 is bolted to the first connecting plate 602 on the first end plate 601 to form a shape as shown in the figure. Figure 4 The structure shown creates a connected cast-in-place cavity between the second outer template 7 and the second inner template 6, and between the first outer template 2 and the first inner template 3.

[0027] Concrete is poured into the cast-in-place cavity through the grouting cylinder 8. The concrete first flows into the space between the first outer formwork 2 and the first inner formwork 3 along the inclined surface of the second inner formwork 6 to form the cast-in-place wall 5. Then, it is filled between the second outer formwork 7 and the second inner formwork 6 until the space between the second outer formwork 7 and the second inner formwork 6 is filled, forming the cast-in-place slab roof. When the concrete has initially set, the second outer formwork 7 is removed, the surface of the cast-in-place slab roof is smoothed, and it continues to dry until the concrete has finally set. The second inner formwork 6, the first outer formwork 2, and the first inner formwork 3 are then removed, and the excess tie bolts 18 are cut off.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A construction system for a shallow circular silo structure, characterized in that: The first outer formwork (2), the first inner formwork (3) and the silo roof frame (9) are vertically spaced on the ground (1). The opposite sides of the first outer formwork (2) and the first inner formwork (3) are supported by diagonal braces (4). One end of the diagonal braces (4) is supported on the ground (1). The first outer formwork (2) and the first inner formwork (3) are poured together to form a cast-in-place wall (5). The silo top frame (9) includes radially evenly arranged longitudinal beams and multiple arc-shaped transverse beams (12) spaced between adjacent longitudinal beams. One end of the longitudinal beam is inserted between the first outer template (2) and the first inner template (3) and is detachably connected to the first outer template (2) and the first inner template (3). One end of the longitudinal beam is embedded in the cast-in-place wall (5). The top of the first inner template (3) is detachably connected to the second inner template (6). The second inner template (6) is supported at the bottom of the silo top frame (9) and closes the gap at the bottom of the silo top frame (9). The end of the second inner template (6) away from the first inner template (3) is fixedly connected to the lower end of the first end plate (601) of the ring plate structure. The end of the longitudinal beam away from the first inner template (3) abuts against the outside of the first end plate (601). The top of the first end plate (601) is higher than the highest point of the silo top frame (9). The inner side of the first end plate (601) encloses and forms a grain inlet (14) that is open from top to bottom. The top of the second inner template (6) is filled with a cast-in-place silo top covering the silo top frame (9), and the highest point of the cast-in-place silo top is flush with the top of the first end plate (601).

2. The shallow circular silo structure construction system as described in claim 1, characterized in that: Tie bolts (18) are inserted through the upper part of the first outer template (2) and the first inner template (3); A third connecting plate (16) is fixedly provided at the outer end of the longitudinal beam. A fourth connecting plate (17) is fixedly provided at the bottom of the third connecting plate (16). The fourth connecting plate (17) is provided with screw holes. The fourth connecting plate (17) is sleeved on the tie bolt (18) through the screw holes. The fourth connecting plate (17) is embedded in the cast-in-place wall (5).

3. The shallow circular silo structure construction system as described in claim 1, characterized in that: A second outer formwork (7) is provided above the top frame (9). One end of the second outer formwork (7) is detachably connected to the top of the first end plate (601). A gap is formed between the second outer formwork (7) and the top frame (9) for concrete to flow through. The end of the second outer template (7) away from the first end plate (601) is detachably connected to the first outer template (2) so that a connected cast-in-place cavity is formed between the second outer template (7) and the second inner template (6) and between the first outer template (2) and the first inner template (3); The top of the second outer formwork (7) is provided with a grouting cylinder (8) with an upper opening that communicates with the cast-in-place cavity.

4. A shallow circular silo structure construction system as described in claim 1 or 3, characterized in that: The top of the silo top frame (9) is provided with multiple concentric arc-shaped guide plates (13); The bottom of the arc-shaped guide plate (13) is fixedly connected to the top of the crossbeam (12) and the longitudinal beam. The opening positions of adjacent arc-shaped guide plates (13) are staggered, and the top of the arc-shaped guide plate (13) is flush with the upper surface of the cast-in-place silo top.

5. The shallow circular silo structure construction system as described in claim 4, characterized in that: The longitudinal beams of the warehouse roof frame (9) include a first longitudinal beam (10) arranged horizontally and a second longitudinal beam (11) arranged at an inclination. The first longitudinal beam (10) and the second longitudinal beam (11) are fixedly connected at one end, and a crossbeam (12) connects two adjacent first longitudinal beams (10) and two adjacent second longitudinal beams (11). The second outer template (7) and the second inner template (6) are conical frustum-shaped structures that are adapted to the shape of the warehouse roof frame (9).

6. The shallow circular silo structure construction system as described in claim 5, characterized in that: The center of the lower port of the grouting cylinder (8) is located on the circular boundary line where the first longitudinal beam (10) and the second longitudinal beam (11) are connected.

Images