A slip form platform for cantilever slab construction

Abstract

The utility model relates to a sliding form platform for overhanging plate construction belongs to the field of building engineering technology. Sliding form platform includes two kinds of forms of sliding form stage form, overhanging plate construction stage form, at sliding form stage form, including the detachable sectional type stand that sets at the top of cylinder wall main part and the sliding form construction platform, sliding form hoist of sectional type stand on, sliding form construction platform is lifted to the sliding form construction design elevation on cylinder wall main part through sliding form hoist. In overhanging plate construction stage form, replace the upper section of stand with auxiliary crossbeam, auxiliary crossbeam is connected at the top of lower section of stand, and the support of sliding form construction platform is realized through auxiliary crossbeam and lower section of stand together, and the overhanging plate formwork is set up above auxiliary crossbeam, and the overhanging plate formwork is used for overhanging plate construction. The utility model solves the problem that the formwork of high altitude overhanging plate is difficult without external scaffold, and has the advantages of simple operation, reliable structure, cost saving, shortening of construction period and strong practicality.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology and relates to a slipform platform for cantilever slab construction. Background Technology

[0002] In the field of industrial construction, reinforced concrete silo structures are widely used due to their advantages such as high storage efficiency and small footprint. The cantilevered slabs at the top, as key structural nodes, not only serve the functional purposes of sheltering from rain and facilitating access and maintenance, but also constitute an important element of the building's facade design. However, for these cantilevered components that extend 300–600 mm beyond the outer wall of the cylinder, when the construction height reaches 20–30 meters or more, the formwork erection technology becomes a core challenge restricting the safety and efficiency of the project.

[0003] Traditional construction techniques use a triangular steel support platform system, but this technical approach has multiple theoretical flaws.

[0004] In terms of time efficiency, this process involves numerous steps and a long construction period. Before constructing the cantilever slab, the cylinder wall is slip-formed to the design elevation, and the concrete must be cured to a certain strength before the slip-form platform can be removed. Then, a triangular support platform and formwork system are erected to pour the cantilever slab. After the cantilever slab concrete reaches its strength, the formwork and triangular support platform are removed. This process involves two curing periods and two high-altitude formwork removal procedures. In terms of material utilization efficiency, the installation of traditional triangular support platforms requires a large amount of pre-embedded construction materials. These materials are consumed in one go and cannot be reused. They are scrapped after the construction of a single silo is completed. At the same time, the use of triangular support platforms generates a large amount of additional construction turnover materials. The stacking and management of a large number of non-standard components also increases the difficulty of coordination on the construction site.

[0005] From a safety risk control perspective, the combination of high-altitude, high-risk operations and a complex construction environment keeps this method in a high-risk state for a long time. Workers must complete the hoisting, positioning, and connection of heavy components without continuous protection; any operational error could lead to falls from heights or being struck by falling objects. Furthermore, the suspended working surfaces created by the repeated installation and dismantling of scaffolding further amplify the difficulty of safety management. While existing regulations stipulate edge protection and the load-bearing capacity of the work platform, the inherent nature of the process makes it difficult to completely eliminate systemic safety risks.

[0006] These deep-seated theoretical contradictions collectively constitute the bottleneck for improving traditional eaves board construction technology. How to break through the existing technological framework and build a safe, efficient, and green new construction system has become a key issue in promoting the technological progress of silo engineering. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a slipform platform for cantilever slab construction, which solves the problem of using the slipform construction platform as a cantilever slab construction platform when there is no external scaffolding, greatly reducing the process of rebuilding the cantilever slab construction support platform, and achieving the goals of saving costs, shortening the construction period, and ensuring construction safety.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A slipform platform for cantilever slab construction includes two forms: a slipform stage form and a cantilever slab construction stage form.

[0010] Sliding mode stage morphology:

[0011] The system includes segmented columns mounted on the top of the main cylindrical wall, and a slipform construction platform and a slipform lifting frame connected to the segmented columns. Each segmented column comprises an upper section and a lower section, which are detachably connected. The slipform lifting frame is connected to the upper section of the column, and the slipform construction platform is connected to the lower section. The slipform construction platform is lifted to the slipform construction design elevation on the main cylindrical wall via the slipform lifting frame.

[0012] Forms of the cantilever slab construction stage:

[0013] After the slipform construction platform is raised to the slipform construction design elevation, based on the slipform stage shape, an auxiliary crossbeam replaces the slipform lifting frame. The auxiliary crossbeam is connected to the lower section of the column and placed on the top of the cylinder wall body. The auxiliary crossbeam and the lower section of the column together support the slipform construction platform. A cantilever slab template is provided above the auxiliary crossbeam, and the cantilever slab template is used for cantilever slab construction.

[0014] Optionally, the slipform lifting frame includes a crossbeam, a support rod, and a driving device. The crossbeam is connected to the upper section of the column, the support rod is placed inside the main body of the cylinder wall and extends out of the top of the main body of the cylinder wall, and the driving device is connected to the support rod to drive the slipform lifting frame to lift the slipform construction platform.

[0015] Optionally, the slipform construction platform includes a combined steel formwork set on the top side of the main body of the cylinder wall, and an outer platform structure supported on the lower section of the column by diagonal bracing; the combined steel formwork is supported on the lower section of the column.

[0016] Optionally, the auxiliary beam is connected to the lower section of the column via auxiliary beam connecting bolts.

[0017] Optionally, the auxiliary beam is detachably connected to the lower section of the column via auxiliary beam connecting bolts. The slipform construction platform can be dismantled by loosening the auxiliary beam connecting bolts.

[0018] Optionally, the cantilever plate template is supported on the auxiliary crossbeam to achieve support of the cantilever plate template on the main body of the cylinder wall.

[0019] Optionally, several auxiliary crossbeams are arranged sequentially along the extension direction of the main body of the cylinder wall, and the cantilever plate template is supported on the outer platform structure between adjacent auxiliary crossbeams.

[0020] Optionally, the upper section and the lower section of the column are detachably connected by a column connecting plate and column connecting bolts.

[0021] Optionally, the support rod is a jack rod.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention provides a slipform platform for cantilever slab construction. Instead of using existing formwork methods, it utilizes slipform units as the construction platform, avoiding the complex process of rebuilding the cantilever slab support platform required in traditional construction. This slipform platform features a simple structure, convenient operation, reliable construction, reduced costs, and improved construction safety, making it highly practical.

[0024] Compared with the prior art, the present invention has the following main technical advantages:

[0025] Shortened construction period: This utility model replaces the slipform lifting frame with an auxiliary crossbeam and uses it as the support structure for the slipform construction platform on the cylinder wall. This allows the slipform construction platform to be directly used as the cantilever slab support and construction platform, solving the problem in the traditional process where the slipform construction platform must be dismantled before the cantilever slab construction support and formwork are erected. The operation is convenient, the construction process is reduced, and the construction period is significantly shortened.

[0026] Improving material utilization efficiency: In existing technologies, triangular support platforms increase unnecessary construction turnover materials, and the embedded parts of the support construction are disposable materials, resulting in resource waste and increased project expenses. However, the slipform platform structure in this utility model is reusable. Components such as the slipform lifting frame and segmented columns can be disassembled and reused multiple times in different projects, significantly improving material utilization efficiency and reducing costs.

[0027] Enhancing Construction Safety: In existing technologies, the combination of high-altitude, high-risk operations and complex construction environments results in construction being in a consistently high-risk state. This invention reduces safety risks by decreasing high-altitude work time and complex operations, such as reducing high-risk tasks like hoisting, positioning, and connecting heavy components. Simultaneously, the slipform platform structure is reliable, providing a stable working environment for construction personnel.

[0028] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic diagram of the sliding stage of the sliding platform of this utility model;

[0031] Figure 2 This is a schematic diagram of the cantilever construction stage of the slipform platform of this utility model.

[0032] Figure label:

[0033] 1. Upper section of column, 2. Lower section of column, 3. Column connecting plate, 4. Column connecting bolt, 5. Horizontal beam, 6. Drive device, 7. Support rod, 8. Combined steel formwork, 9. External platform structure, 10. Auxiliary horizontal beam, 11. Auxiliary horizontal beam connecting bolt, 12. Main body of cylinder wall, 13. Cantilever plate, 14. Cantilever plate formwork. Detailed Implementation

[0034] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0036] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] Example 1:

[0038] Please see Figures 1-2 It is a slipform platform for cantilever slab construction, including two forms: slipform stage form and cantilever slab construction stage form.

[0039] Sliding mode stage morphology:

[0040] It includes segmented columns installed on the top of the main body 12 of the cylinder wall, and a slipform construction platform and a slipform lifting frame respectively connected to the segmented columns; the segmented columns include an upper column section 1 and a lower column section 2, which are detachably connected by a column connecting plate 3 and a column connecting bolt 4; the slipform lifting frame is connected to the upper column section 1, and the slipform construction platform is connected to the lower column section 2; the slipform construction platform is lifted to the slipform construction design elevation on the main body 12 of the cylinder wall by the slipform lifting frame.

[0041] Forms of the cantilever slab construction stage:

[0042] Once the slipform construction platform is raised to the design elevation for slipform construction, an auxiliary crossbeam 10 replaces the slipform lifting frame, based on the slipform stage form. The auxiliary crossbeam 10 is connected to the lower section 2 of the column and placed on top of the main body 12 of the cylinder wall. The auxiliary crossbeam 10 and the lower section 2 of the column work together to support the slipform construction platform. The auxiliary crossbeam 10 is detachably connected to the lower section 2 of the column via auxiliary crossbeam connecting bolts 11, forming a structure that is easy to disassemble and assemble. The slipform construction platform can be dismantled by loosening the auxiliary crossbeam connecting bolts 11.

[0043] The slipform lifting frame includes a crossbeam 5, a support rod 7, and a driving device 6. The crossbeam 5 is connected to the upper section 1 of the column, placed inside the main body 12 of the cylinder wall, and extends out of the top of the main body 12 of the cylinder wall. The driving device 6 is connected to the support rod 7 and drives the slipform lifting frame to lift the slipform construction platform. In some embodiments of this utility model, the support rod 7 is preferably a jack rod.

[0044] The slipform construction platform includes a combined steel formwork 8 installed on the top side of the main body 12 of the cylindrical wall, and an outer platform structure 9 supported by diagonal bracing on the lower section 2 of the column. The combined steel formwork 8 is used for the construction and pouring of the main body 12 of the cylindrical wall. The combined steel formwork 8, the lower section 2 of the column, and the outer platform structure 9 together form a formwork support system, which bears the lateral pressure of the concrete and the load transmitted from the slipform construction platform. Finally, the load is transferred to the support rod 7 through the upper section 1 of the column and the crossbeam 5.

[0045] The slipform lifting frame bears the lateral pressure of the concrete transmitted from the combined steel formwork 8 and all the loads transmitted from the slipform construction platform, and transfers the force to the support rod 7.

[0046] A cantilever slab template 14 is installed above the auxiliary beam 10, and the cantilever slab template 14 is used for the construction of the cantilever slab 13. An auxiliary beam 10 is added in the middle of the slipform construction platform to support the cantilever slab template 14.

[0047] In some embodiments of this utility model, a plurality of auxiliary crossbeams 10 are arranged sequentially along the extension direction of the main body 12 of the cylinder wall, and between adjacent auxiliary crossbeams 10, the cantilever plate template 14 is supported on the outer platform structure 9.

[0048] The cantilever slab formwork 14 can be supported on the auxiliary beam 10 or on the outer platform structure 9 to achieve support of the cantilever slab formwork 14 on the main body of the cylinder wall 12, thus solving the problem of no place to support the cantilever slab 13 at a high position.

[0049] During the slipforming stage, the auxiliary crossbeam 10 is not installed. After the slipforming stage, the cantilever slab construction stage begins. The column connecting bolts 4 are loosened, the column connecting plate 3 is removed, and then the auxiliary crossbeam 10 is added via the auxiliary crossbeam connecting bolts 11. Once the auxiliary crossbeam 10 is installed on the main body 12 of the cylinder wall as support for the slipforming construction platform, the load of the slipforming construction platform is transferred to the main body 12 of the cylinder wall through the auxiliary crossbeam 10. Only then can the slipforming lifting frame be dismantled. After the cantilever slab 13 construction is completed, the auxiliary crossbeam connecting bolts 11 on the lower section 2 of the column are loosened, disconnecting it from the lower section 2 of the column to facilitate the dismantling of the slipforming construction platform.

[0050] By loosening the column connecting bolt 4 and removing the connecting plate, the slipform lifting frame can be completely dismantled, which is beneficial for the rapid dismantling and reuse of the slipform lifting frame.

[0051] Example 2:

[0052] A: As Figure 1 As shown, the design elevation for the slipform construction of the main body 12 sections of the cylinder wall was determined. The slipform construction platform was lifted using a slipform lifting frame, and concrete was poured to the design elevation for the slipform construction of the main body 12 sections of the cylinder wall.

[0053] B: As Figure 2 As shown, the auxiliary crossbeam 10 is connected to the lower section 2 of the column of the slipform lifting frame by the auxiliary crossbeam bolt 11 and placed on the top surface of the formed cylinder wall body 12.

[0054] C: When the main body 12 of the cylinder wall reaches the construction design strength, loosen the column connecting bolts 4 of the lower section 2 of the column, remove the column connecting plate 3, remove the slipform lifting frame part, and cut off the support rod 7 that exceeds the design roof length;

[0055] D: Install the side formwork of the reserved cylinder wall main body 12 and the cantilever plate formwork 14, and support them on the auxiliary crossbeam 10 or on the outer platform structure 9;

[0056] E: Pour concrete for the reserved cylinder wall 12 and cantilever slab 13. It can be poured at once or in multiple stages.

[0057] F: Once the reserved cylindrical wall body 12 and cantilever slab 13 have reached the construction design strength, remove the formwork of the reserved cylindrical wall body 12 and cantilever slab 13;

[0058] G: Loosen the auxiliary crossbeam connecting bolt 11 on one side, remove the slipform construction platform on that side, and at the same time cut off the part of the auxiliary crossbeam 10 exposed on the cylinder wall body 12; loosen the auxiliary crossbeam connecting bolt 11 on the other side, remove the slipform construction platform on that side, and at the same time cut off the part of the auxiliary crossbeam 10 exposed on the cylinder wall body 12.

[0059] This utility model provides a slipform platform for cantilever slab construction. Instead of using existing formwork methods, it utilizes slipform units as the construction platform, avoiding the complex process of rebuilding the cantilever slab construction support platform required in traditional construction. This utility model's slipform platform has a simple structure, is easy to operate, and is reliable, reducing costs and improving construction safety, making it highly practical. It can shorten the construction period: By replacing the slipform lifting frame with an auxiliary crossbeam, which serves as the support structure for the slipform construction platform on the cylinder wall, the slipform construction platform can be directly used as the cantilever slab formwork and construction platform. This solves the problem in traditional processes where the formwork must be removed first before erecting the slipform construction platform and cantilever slab construction support and formwork. The operation is convenient, the construction process is reduced, and the construction period is significantly shortened. It can improve material utilization efficiency: In existing technologies, triangular support platforms increase unnecessary construction turnover materials, and the embedded parts of the support construction are one-time consumable materials, resulting in resource waste and increased project expenses. The slipform platform structure in this invention is reusable. Components such as the slipform lifting frame and segmented columns can be disassembled and reused multiple times in different projects, significantly improving material utilization efficiency and reducing costs. It also enhances construction safety: In existing technologies, the combination of high-altitude, high-risk operations and complex construction environments results in construction being in a consistently high-risk state. This invention reduces safety risks by decreasing high-altitude work time and complex operations, such as reducing high-risk tasks like hoisting, positioning, and connecting heavy components. Simultaneously, the slipform platform structure is reliable, providing a stable working environment for construction personnel.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A slipform platform for cantilever slab construction, characterized in that: It includes two forms: slipform construction stage and cantilever construction stage. Sliding mode stage morphology: The system includes a segmented column installed on the top of the main body of the cylindrical wall (12), and a slipform construction platform and a slipform lifting frame respectively connected to the segmented column; the segmented column includes an upper column section (1) and a lower column section (2), the upper column section (1) and the lower column section (2) are detachably connected; the slipform lifting frame is connected to the upper column section (1), and the slipform construction platform is connected to the lower column section (2); the slipform construction platform is lifted to the slipform construction design elevation on the main body of the cylindrical wall (12) by the slipform lifting frame; Forms of the cantilever slab construction stage: After the slipform construction platform is raised to the slipform construction design elevation, based on the slipform stage form, an auxiliary beam (10) is used to replace the slipform lifting frame. The auxiliary beam (10) is connected to the lower section (2) of the column and placed on the top of the cylinder wall body (12). The auxiliary beam (10) and the lower section (2) of the column together support the slipform construction platform. A cantilever plate template (14) is provided above the auxiliary beam (10). The cantilever plate template (14) is used for the construction of the cantilever plate (13).

2. The slipform platform for cantilever slab construction according to claim 1, characterized in that: The slipform lifting frame includes a crossbeam (5), a support rod (7), and a driving device (6). The crossbeam (5) is connected to the upper section (1) of the column. The support rod (7) is placed inside the main body of the cylinder wall (12) and extends out of the top of the main body of the cylinder wall (12). The driving device (6) is connected to the support rod (7) and drives the slipform lifting frame to lift the slipform construction platform.

3. The slipform platform for cantilever slab construction according to claim 1, characterized in that: The slipform construction platform includes a combined steel formwork (8) set on the top side of the main body of the cylinder (12), and an outer platform structure (9) supported by diagonal bracing on the lower section (2) of the column; the combined steel formwork (8) is supported on the lower section (2) of the column.

4. A slipform platform for cantilever slab construction according to claim 1, characterized in that: The auxiliary beam (10) is connected to the lower section (2) of the column by auxiliary beam connecting bolts (11).

5. A slipform platform for cantilever slab construction according to claim 1, characterized in that: The auxiliary beam (10) is detachably connected to the lower section (2) of the column by auxiliary beam connecting bolts (11). The slipform construction platform can be dismantled by loosening the auxiliary beam connecting bolts (11).

6. A slipform platform for cantilever slab construction according to claim 1, characterized in that: The cantilever slab template (14) is supported on the auxiliary crossbeam (10) to achieve support of the cantilever slab template (14) on the main body of the cylinder wall (12).

7. A slipform platform for cantilever slab construction according to claim 3, characterized in that: Several auxiliary beams (10) are arranged sequentially along the extension direction of the main body of the cylinder wall (12). Between adjacent auxiliary beams (10), the cantilever plate template (14) is supported on the outer platform structure (9).

8. A slipform platform for cantilever slab construction according to claim 1, characterized in that: The upper section (1) and lower section (2) of the column are connected in a detachable manner by a column connecting plate (3) and a column connecting bolt (4).

9. A slipform platform for cantilever slab construction according to claim 2, characterized in that: The support rod (7) is a jack rod.

Images