Combined formwork structure of round bare concrete
By adopting a combined support structure of inner wooden formwork and outer steel formwork in the ash library structure, the expansion problem caused by the poor stiffness of the wooden formwork is solved, the concrete forming quality and service life of the support form are improved, and the ash library structure size changes are adapted to the changes.
Patent Information
- Application Number
- CN202421920231.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-08
AI Technical Summary
In the prior art, the poor stiffness of the wooden formwork causes the mold expansion phenomenon to occur easily during the molding process of poured concrete, and the service life of the wooden formwork is short, making it difficult to meet the quality standards of clean water concrete construction.
A combined support structure including inner wooden formwork and outer steel formwork is adopted. Each support unit is connected into one through a connecting mechanism to form an arc structure to adapt to the outer surface of the circular gray library. The outer steel formwork increases horizontal and vertical strength to reduce the expansion phenomenon.
It improves the rigid strength of the supporting mold structure, reduces the expansion phenomenon after concrete forming, extends the service life of the supporting mold, and improves the concrete forming quality to adapt to changes in the structure size of the gray warehouse.
Smart Images
Figure CN222893969U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a formwork structure, in particular to a combined formwork structure for circular plain concrete. Background Art
[0002] At present, the ash silo of a power plant is a circular tall structure, and its outer surface is not decorated, while the inner surface needs to be treated for wear resistance. Therefore, the outer side of the ash silo needs to meet the quality standards of plain concrete. At the same time, the molding requirements for the outer surface concrete of the ash silo structure are high. In the existing technology, wooden formwork is used for support. Due to the poor rigidity of the wooden formwork itself, the mold expansion phenomenon is easy to occur during the pouring concrete molding process, resulting in poor construction molding quality. Even the internal structure of the wooden formwork will become soft after being soaked in rainwater, resulting in a short service life. In addition, there are many bolt reinforcement holes on the surface of the wooden formwork, so that the concrete cannot meet the quality standards for plain concrete construction after final molding. Utility Model Content
[0003] The utility model aims to provide a combined formwork structure for circular plain concrete which not only improves the rigidity but also has good concrete forming on the outer surface of the ash silo structure, is not prone to mold expansion and can be reused many times.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a combined formwork structure for circular plain concrete, the innovation of which is: comprising a plurality of formwork units, and the plurality of formwork units are enclosed and spliced along the circumferential direction to form a concrete forming mold body,
[0005] Each formwork unit includes an inner wooden formwork and an outer steel formwork, the inner wooden formwork and the outer steel formwork are connected as a whole through a connecting mechanism, and the space formed between the inner wooden formwork and the outer steel formwork is used to pour plain concrete, and the inner wooden formwork and the outer steel formwork are both arc-shaped structure formworks.
[0006] The outer steel template has a first direction along its length direction and a second direction along its height direction. On the outer surface of the outer steel template and along the first direction, multiple rows of outer transverse ribs are arranged separately and used to strengthen the transverse strength. Multiple rows of outer vertical ribs are arranged separately and used to strengthen the vertical strength along the second direction, and each row of outer vertical ribs is welded to multiple rows of outer transverse ribs at the same time.
[0007] The left and right ends and the upper and lower edges of the outer steel formwork are provided with connecting plates for forming a detachable connection structure with the outer steel formwork of the adjacent supporting formwork unit, and the top of the outer vertical rib is provided with a lifting ring for convenient lifting.
[0008] In the above technical solution, the connecting mechanism includes a tension bolt and a first connecting plate. The tension bolt passes through the inner wooden formwork and the outer steel formwork at the same time, and the first connecting plates at both ends of the tension bolt are respectively abutted against the inner side surface of the inner wooden formwork and the outer side surface of the outer vertical rib. At the same time, anti-falling fastening nuts are screwed on both ends of the tension bolt.
[0009] In the above technical solution, the inner wooden formwork has a first direction along its length direction and a second direction along its height direction. On the inner side surface of the inner wooden formwork and along the first direction, there are multiple rows of inner transverse ribs separately arranged and used to strengthen the transverse strength. Along the second direction, there are multiple rows of inner vertical ribs separately arranged and used to strengthen the vertical strength, and each row of inner vertical ribs is connected to multiple rows of inner transverse ribs at the same time.
[0010] In the above technical solution, the outer transverse rib is a channel steel structure, the outer vertical rib is a structure composed of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the outer vertical rib is 30 mm to 40 mm.
[0011] In the above technical solution, the multiple rows of outer transverse ribs in the first direction and the multiple rows of outer vertical ribs in the second direction of the outer steel formwork are arranged at equal intervals, and the spacing between adjacent outer transverse ribs is 300mm~500mm, and the spacing between adjacent outer vertical ribs is 600mm~900mm.
[0012] In the above technical solution, the inner transverse rib is a square tube structure, the inner vertical rib is a structure composed of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the inner vertical rib is 30mm to 40mm.
[0013] In the above technical solution, the multiple rows of inner transverse ribs in the first direction and the multiple rows of inner vertical ribs in the second direction of the inner wooden formwork are arranged at equal intervals, and the spacing between adjacent inner transverse ribs is 300mm~500mm, and the spacing between adjacent inner vertical ribs is 600mm~900mm.
[0014] In the above technical solution, the curvature of the outer side surface of the inner wooden formwork is 15° to 20°, the curvature of the outer side surface of the outer steel formwork is 15° to 20°, and the inner wooden formwork itself is a steel plate with a thickness of 4mm to 6mm.
[0015] In the above technical solution, a plurality of outer through holes are provided between the two channel steels of the outer vertical rib and along the second direction, and an inner through hole corresponding to the outer through holes is provided on the inner wooden formwork, and the connecting mechanism includes a plurality of tension bolts, and each tension bolt passes through the corresponding inner through hole and outer through hole at the same time to connect the inner wooden formwork and the outer steel formwork as one.
[0016] In the above technical solution, the lifting ring is an overall U-shaped structure, and the lifting ring is welded to the top of the outer vertical rib as a whole.
[0017] The positive effect of the utility model is that after adopting the circular plain concrete combined formwork structure of the utility model, since the utility model comprises a plurality of formwork units, and the plurality of formwork units are enclosed and spliced along the circumferential direction to form a concrete forming mold body,
[0018] Each formwork unit includes an inner wooden formwork and an outer steel formwork, the inner wooden formwork and the outer steel formwork are connected as a whole through a connecting mechanism, and the space formed between the inner wooden formwork and the outer steel formwork is used to pour plain concrete, and the inner wooden formwork and the outer steel formwork are both arc-shaped structure formworks.
[0019] The outer steel template has a first direction along its length direction and a second direction along its height direction. On the outer surface of the outer steel template and along the first direction, multiple rows of outer transverse ribs are arranged separately and used to strengthen the transverse strength. Multiple rows of outer vertical ribs are arranged separately and used to strengthen the vertical strength along the second direction, and each row of outer vertical ribs is welded to multiple rows of outer transverse ribs at the same time.
[0020] The left and right ends and the upper and lower edges of the outer steel formwork are provided with connecting plates for forming a detachable connection structure with the outer steel formwork of the adjacent formwork unit. The top of the outer vertical rib is provided with a lifting ring for convenient lifting.
[0021] When in use, according to the requirements of the ash warehouse structure, multiple formwork units are hoisted through lifting rings, and are enclosed and spliced in the circumferential direction to form a layer of concrete forming mold body, and then concrete is poured into the space between the inner wooden formwork and the outer steel formwork. After one layer of concrete is formed, another layer of forming mold body can be supported on the basis of the existing structure through a connecting plate to form a second layer of concrete forming mold body. If the third layer of mold body is supported, it is only necessary to disassemble the first layer of mold body and turn the mold over to connect it with the previous second layer of mold body. Therefore, the advantages of the utility model are: ① Since the outer steel formwork structure is designed in the formwork unit, it not only improves its own rigidity, but also improves the strength of the mold body. ① The formwork unit of the utility model can not only meet the construction requirements of concrete molding on the outer surface of the ash bin structure, but also improve the rigidity and strength, and at the same time extend the service life without excessively increasing the structural cost, so that it can be reused many times; ③ The overall installation and disassembly are mechanized construction, which makes the operation easier; ④ The number of mold turnovers of a single circular ash bin is reduced, which speeds up the construction progress, shortens the construction period, and improves the construction quality of circular plain concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a three-dimensional structural schematic diagram of a specific implementation mode of the utility model;
[0023] Figure 2 It is a three-dimensional structural schematic diagram of the formwork unit of the utility model;
[0024] Figure 3 yes Figure 2 Schematic diagram of another direction. DETAILED DESCRIPTION
[0025] The present invention is further described below in conjunction with the accompanying drawings and given embodiments, but is not limited thereto.
[0026] like Figure 1 , 2 As shown in , 3, a combined formwork structure for circular plain concrete includes a plurality of formwork units, and the plurality of formwork units are enclosed and spliced along the circumferential direction to form a concrete forming mold body,
[0027] Each formwork unit includes an inner wooden formwork 1 and an outer steel formwork 2, which are connected as a whole through a connecting mechanism 3, and the space formed between the inner wooden formwork 1 and the outer steel formwork 2 is used to pour plain concrete. The inner wooden formwork 1 and the outer steel formwork 2 are both arc-shaped formworks, and the inner formwork 1 and the outer steel formwork 2 of the concrete forming mold body are arranged in a staggered manner, the purpose of which is to ensure the balance of the overall structure.
[0028] The outer steel template 2 has a first direction along its length direction and a second direction along its height direction. A plurality of rows of outer transverse ribs 4 are arranged separately and used to strengthen the transverse strength on the outer surface of the outer steel template 2 and along the first direction. A plurality of rows of outer vertical ribs 5 are arranged separately and used to strengthen the vertical strength along the second direction, and each row of outer vertical ribs 5 is welded to a plurality of rows of outer transverse ribs 4 at the same time.
[0029] The left and right ends and the upper and lower edges of the outer steel formwork 2 are provided with connecting plates 6 for forming a detachable connection structure with the outer steel formwork 2 of the adjacent supporting formwork unit, and a plurality of connecting screw holes are provided on the connecting plate 6. The top of the outer vertical rib 5 is provided with a lifting ring 7 for convenient lifting.
[0030] like Figure 2 , 3As shown, in order to conveniently connect the outer steel formwork and the inner formwork as a whole and ensure the subsequent concrete forming quality, the connecting mechanism 3 includes a tension bolt 31 and a first connecting plate 32. The tension bolt 31 passes through the inner wooden formwork 1 and the outer steel formwork 2 at the same time, and the first connecting plates 32 at both ends of the tension bolt 31 are respectively abutted against the inner side surface of the inner wooden formwork 1 and the outer side surface of the outer vertical rib 5. At the same time, anti-falling fastening nuts are also screwed on both ends of the tension bolt 31.
[0031] like Figure 2 As shown, in order to further improve the inherent strength of the inner formwork, the inner wooden formwork 1 has a first direction along its length direction and a second direction along its height direction. On the inner side surface of the inner wooden formwork 1 and along the first direction, there are provided a plurality of rows of inner transverse ribs 8 which are separately arranged and used to strengthen the transverse strength. Along the second direction, there are provided a plurality of rows of inner vertical ribs 9 which are separately arranged and used to strengthen the vertical strength, and each row of inner vertical ribs 9 is connected to a plurality of rows of inner transverse ribs 8 as a whole.
[0032] like Figure 3 As shown, in order to further improve the rigidity of the outer steel formwork, the outer transverse rib 4 is a channel steel structure, and the outer vertical rib 5 is a structure composed of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the outer vertical rib 5 is 30mm to 40mm.
[0033] Furthermore, in order to make the structure more reasonable and optimize the outer steel formwork structure, the multiple rows of outer transverse ribs 4 in the first direction and the multiple rows of outer vertical ribs 5 in the second direction of the outer steel formwork 2 are arranged at equal intervals, and the spacing between adjacent outer transverse ribs 4 is 300mm~500mm, and the spacing between adjacent outer vertical ribs 5 is 600mm~900mm.
[0034] like Figure 2 As shown, in order to ensure the rationality of the structure, the inner transverse rib 8 is a square tube structure, and the inner vertical rib 9 is a structure composed of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the inner vertical rib 9 is 30mm to 40mm.
[0035] Furthermore, in order to make the structure more reasonable and optimize the inner wooden formwork structure, the multiple rows of inner transverse ribs 8 in the first direction and the multiple rows of inner vertical ribs 9 in the second direction of the inner wooden formwork 1 are arranged at equal intervals, and the spacing between adjacent inner transverse ribs 8 is 300mm~500mm, and the spacing between adjacent inner vertical ribs 9 is 600mm~900mm.
[0036] Furthermore, in order to ensure that multiple formwork units are spliced into a concrete forming mold, the curvature of the outer side surface of the inner wooden formwork 1 is 15°~20°, the curvature of the outer side surface of the outer steel formwork 2 is 15°~20°, and the steel formwork itself is a steel plate with a thickness of 4mm~6mm.
[0037] like Figure 2 , 3 As shown, in order to further improve the appearance quality of the formed plain concrete, the excessive number of screw holes on the template surface in the prior art is replaced, and a plurality of outer through holes are provided between the two channel steels of the outer vertical rib 5 and along the second direction, and the inner wooden template 1 is provided with inner through holes corresponding to the outer through holes one by one, and the connecting mechanism 3 includes a plurality of tension bolts 31, and each tension bolt 31 simultaneously passes through the corresponding inner through holes and outer through holes to connect the inner wooden template 1 and the outer steel template 2 as a whole. Specifically, the inner through holes corresponding to the outer through holes are provided between the two channel steels of the inner vertical rib 9 of the utility model, so that the outer through holes and the inner through holes are concentrated in a strip-shaped area (between the two channel steels), which greatly improves the appearance quality of the plain concrete.
[0038] The utility model preferentially provides two upper and lower outer through holes between the two channel steels of the outer vertical rib 5. At the same time, inner through holes corresponding to the upper and lower outer through holes of the outer vertical rib 5 are also provided between the two channel steels of the inner vertical rib 9. Compared with the wooden formwork in the prior art, the surface bolt reinforcement holes are greatly reduced, and the appearance quality of the fair-faced concrete is improved.
[0039] like Figure 3 As shown, in order to facilitate the lifting of the formwork unit and realize the mechanized operation of overall installation and disassembly, the lifting ring 7 is an overall U-shaped structure, and the lifting ring 7 is welded to the top of the outer vertical rib 5 as a whole.
[0040] like Figure 1 As shown, when the utility model is used, according to the requirements of the ash silo structure, a plurality of formwork units are hoisted through the lifting ring 7, and are enclosed and spliced along the circumferential direction to form a one-layer structure of a concrete forming mold, and then concrete 10 is poured into the space between the inner wooden formwork 1 and the outer steel formwork 2. After a layer of concrete is formed, another layer of forming mold can be supported on the basis of the existing structure to form a second-layer structure of a concrete forming mold, that is, the upper-layer formwork unit and the lower-layer formwork unit are connected through the connecting plate 6 to form a whole. If the third-layer mold is to be supported, it is only necessary to disassemble the first-layer mold, turn the mold over, and connect it with the previous second-layer mold.
[0041] Therefore, the advantages of the utility model are: ① Since the outer steel formwork structure is designed in the formwork unit, it not only improves its own rigidity and strength, and enhances the anti-deformation ability of the outer formwork, but also is not easy to cause mold expansion after pouring concrete, thereby ensuring the aesthetics of the concrete after molding, and being able to flexibly adapt to the changes in the internal structure size of the ash bin; ② The formwork unit of the utility model can not only meet the construction requirements of concrete molding on the outer surface of the ash bin structure, but also improve the rigidity and strength, while also extending the service life, and will not excessively increase the structural cost, so that it can be reused many times; ③ The overall installation and disassembly are all mechanized construction, which makes the operation easier; ④ The number of mold turnovers of a single circular ash bin is reduced, which speeds up the construction progress, shortens the construction period, and improves the construction quality of circular plain concrete; ⑤ The utility model reduces the number of screw holes per unit surface area and concentrates them in a strip-shaped area, thereby improving the appearance quality of plain concrete; ⑥ The utility model is precisely made, and the area of a single formwork unit is large, which reduces the cumulative errors of the closing length and height of the template.
[0042] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A combined formwork structure for circular plain concrete, characterized in that: It includes a plurality of formwork units, and the plurality of formwork units are enclosed and spliced along the circumferential direction to form a concrete forming mold body. Each formwork unit comprises an inner wooden formwork (1) and an outer steel formwork (2), wherein the inner wooden formwork (1) and the outer steel formwork (2) are connected as a whole via a connecting mechanism (3), and a space formed between the inner wooden formwork (1) and the outer steel formwork (2) is used for pouring plain concrete, wherein the inner wooden formwork (1) and the outer steel formwork (2) are both formworks of an arc structure. The outer steel template (2) has a first direction along its length direction and a second direction along its height direction. A plurality of rows of outer transverse ribs (4) arranged separately and used to strengthen the transverse strength are provided on the outer surface of the outer steel template (2) along the first direction. A plurality of rows of outer vertical ribs (5) arranged separately and used to strengthen the vertical strength are provided along the second direction. Each row of outer vertical ribs (5) is welded to a plurality of rows of outer transverse ribs (4) as a whole. The left and right ends and the upper and lower edges of the outer steel formwork (2) are provided with connecting plates (6) for forming a detachable connection structure with the outer steel formwork (2) of the adjacent formwork unit, and the top of the outer vertical rib (5) is provided with a lifting ring (7) for facilitating lifting.
2. The circular plain concrete composite formwork structure according to claim 1, characterized in that: The connecting mechanism (3) comprises a tension bolt (31) and a first connecting plate (32), wherein the tension bolt (31) passes through the inner wooden formwork (1) and the outer steel formwork (2) at the same time, and the first connecting plates (32) at both ends of the tension bolt (31) are respectively in contact with the inner side surface of the inner wooden formwork (1) and the outer side surface of the outer vertical rib (5), and at the same time, anti-falling fastening nuts are screwed on both ends of the tension bolt (31).
3. The combined formwork structure for circular plain concrete according to claim 1 or 2, characterized in that: The inner wooden formwork (1) has a first direction along its length direction and a second direction along its height direction. On the inner side surface of the inner wooden formwork (1) and along the first direction, a plurality of rows of inner transverse ribs (8) are arranged separately and used to strengthen the transverse strength. A plurality of rows of inner vertical ribs (9) are arranged separately and used to strengthen the vertical strength. Each row of inner vertical ribs (9) is connected to a plurality of rows of inner transverse ribs (8) at the same time.
4. The combined formwork structure for circular plain concrete according to claim 1, characterized in that: The outer transverse rib (4) is a channel steel structure, the outer vertical rib (5) is a structure consisting of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the outer vertical rib (5) is 30 mm to 40 mm.
5. The circular plain concrete composite formwork structure according to claim 1, characterized in that: The multiple rows of outer transverse ribs (4) in the first direction and the multiple rows of outer vertical ribs (5) in the second direction of the outer steel formwork (2) are arranged at equal intervals, and the spacing between adjacent outer transverse ribs (4) is 300 mm to 500 mm, and the spacing between adjacent outer vertical ribs (5) is 600 mm to 900 mm.
6. The circular plain concrete composite formwork structure according to claim 3, characterized in that: The inner transverse rib (8) is a square tube structure, and the inner vertical rib (9) is a structure composed of two channel steels arranged in a mirror image, and the spacing between the two channel steels of the inner vertical rib (9) is 30 mm to 40 mm.
7. The combined formwork structure for circular plain concrete according to claim 1, characterized in that: The multiple rows of inner transverse ribs (8) in the first direction and the multiple rows of inner vertical ribs (9) in the second direction of the inner wooden formwork (1) are arranged at equal intervals, and the spacing between adjacent inner transverse ribs (8) is 300 mm to 500 mm, and the spacing between adjacent inner vertical ribs (9) is 600 mm to 900 mm.
8. The circular plain concrete composite formwork structure according to claim 1, characterized in that: The curvature of the outer side surface of the inner wooden formwork (1) is 15° to 20°, the curvature of the outer side surface of the outer steel formwork (2) is 15° to 20°, and the outer steel formwork (2) is a steel plate with a thickness of 4 mm to 6 mm.
9. The circular fair-faced concrete composite formwork structure according to claim 4, characterized in that: A plurality of outer through holes are provided between the two channel steels of the outer vertical rib (5) and along the second direction, and an inner through hole corresponding to the outer through holes is provided on the inner wooden formwork (1), and the connection mechanism (3) comprises a plurality of tension bolts (31), and each tension bolt (31) simultaneously passes through the corresponding inner through hole and outer through hole to connect the inner wooden formwork (1) and the outer steel formwork (2) into one.
10. The circular plain concrete composite formwork structure according to claim 1, characterized in that: The lifting ring (7) is an overall U-shaped structure, and the lifting ring (7) is welded to the top of the outer vertical rib (5) as a whole.