Post-cast strip firstly-closed and then-cast structure
By adopting a structure of post-pouring strip first and then pouring in the station-city integrated construction project, and using reinforced concrete prefabricated cover plates, prefabricated pouring pipes and prefabricated sealing plates, the problem of uncertainty in the pouring time of post-pouring strips is solved, the construction efficiency is improved and the impact on the use of the ground and basement is reduced.
Patent Information
- Application Number
- CN202421699169.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In the integrated construction project of the station and city, the pouring time of the post-pouring belt is uncertain, which affects the normal use of the ground and basement.
The structure of post-pouring tape is first closed and then poured, including the base mold assembly and cover plate assembly. The reinforced concrete prefabricated cover plate, prefabricated pouring pipe and prefabricated sealing plate are used to reserve the position of the post-pouring tape first, and the casting is carried out after each plate settles and stabilizes.
Through this structure, the impact of uncertainty in the pouring time of the post-pouring belt on the normal use of the ground and basement is solved, construction efficiency is improved, and the impact on the use of the square floor and basement is reduced.
Smart Images
Figure CN222908897U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of civil engineering construction, and specifically relates to a structure for first closing and then pouring a post-cast strip. Background Technique
[0002] In the integrated construction project of station and city, the construction situation is complex. For example, in a certain integrated station and city project, the integrated station and city area includes railway projects (station building, maintenance yard and interval project, newly added railway project in the integrated station and city), comprehensive transportation supporting projects (cover project, hub supporting project, municipal supporting project, civil engineering reserved embedment project for urban rapid transit), and comprehensive development projects (development on the maintenance yard cover, development on the canopy cover, development of the east square, development of the west square). The time is tight, the task is heavy, the environmental requirements are high, and there are many and complex interfaces among various sectors, with prominent uncertainties. The construction times of various sectors are different, and the settlement times of various sectors are also different. During construction, post-cast strips need to be reserved on the ground or the basement roof, and the post-cast strips need to be poured after the settlements of various sectors are stable. However, the settlement stable times of various sectors are uncertain, which leads to the uncertainty of the pouring time of the post-cast strip. The long-term reservation of the post-cast strip will affect the normal use of the square ground and the basement. Summary of the Invention
[0003] In order to overcome the problems existing in the background technique, the utility model provides a structure for first closing and then pouring a post-cast strip, which can solve the influence of the uncertainty of the post-cast strip pouring time on the ground and the basement.
[0004] To achieve the above purpose, the utility model is realized by the following technical solutions:
[0005] The structure for first closing and then pouring a post-cast strip includes a bottom formwork assembly and a cover plate assembly; the cover plate assembly includes a reinforced concrete precast cover plate, a reinforced concrete precast pouring pipe and a reinforced concrete precast sealing plate; the reinforced concrete precast pouring pipe is poured on the upper end surface of the reinforced concrete precast cover plate, and a pouring channel communicating with the reinforced concrete precast pouring pipe is provided on the reinforced concrete precast cover plate; the reinforced concrete precast sealing plate covers the reinforced concrete precast pouring pipe; the reinforced concrete precast cover plate is arranged above the bottom formwork assembly; the reinforced concrete precast pouring pipe is aligned with the post-cast strip.
[0006] Preferably, a convex platform that can be inserted into the reinforced concrete precast pouring pipe is provided on the lower end surface of the reinforced concrete precast sealing plate.
[0007] Preferably, a conical strengthening base ring is poured between the outer periphery of the bottom of the reinforced concrete precast pouring pipe and the reinforced concrete precast cover plate.
[0008] Preferably, the bottom formwork assembly includes patterned steel plates and anchor bolts; both ends of the patterned steel plates are anchored to the lower end face of the cast-in-place slab by anchor bolts, and the patterned steel plates are arranged facing the post-cast strip.
[0009] Preferably, stiffening channel steels are further provided on the lower end face of the patterned steel plates; multiple stiffening channel steels are arranged horizontally along the post-cast strip.
[0010] Preferably, the precast reinforced concrete cover plate, the precast reinforced concrete pouring pipe, and the precast reinforced concrete sealing plate are made of C30 concrete, and the steel is Q235B.
[0011] Preferably, lifting rings are respectively provided on the precast reinforced concrete cover plate and the precast reinforced concrete sealing plate.
[0012] Advantages of the present utility model:
[0013] With the structure of the present utility model, during the construction of the basement top slab, the position of the post-cast strip can be reserved first, and then poured after meeting the pouring conditions, solving the influence of the uncertainty of the post-cast strip pouring time on the normal use of the square ground and the basement.
[0014] The structure of the present utility model can be prefabricated in the factory or on-site, further improving the construction efficiency. Description of the Drawings
[0015] Figure 1 is a structural sectional view of the present utility model;
[0016] Figure 2 is a schematic structural diagram of the cover plate assembly of the present utility model;
[0017] Figure 3 is a schematic structural diagram of the bottom formwork assembly of the present utility model;
[0018] In the figure, 1 - precast reinforced concrete sealing plate, 2 - precast reinforced concrete pipe, 3 - precast reinforced concrete cover plate, 4 - patterned steel plate, 5 - stiffening channel steel, 6 - anchor bolt, 7 - tapered strengthening base ring, 10 - cast-in-place slab. Detailed Embodiments
[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the drawings for the convenience of those skilled in the art to understand.
[0020] In the description of the present utility model, unless otherwise specified, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] As Figures 1-3 shown, the post-cast strip first-sealed and then-poured structure includes a bottom formwork assembly and a cover plate assembly. The bottom formwork assembly can be prefabricated in a factory or on-site according to the construction dimension requirements. During construction, it can be transported to the site for use, saving construction time;
[0023] The cover plate assembly includes a reinforced concrete precast cover plate 3, a reinforced concrete precast pouring pipe 2, and a reinforced concrete precast sealing plate 1. The reinforced concrete precast pouring pipe 2 is poured on the upper end surface of the reinforced concrete precast cover plate 3, and a pouring channel communicating with the reinforced concrete precast pouring pipe 2 is provided on the reinforced concrete precast cover plate 3. The reinforced concrete precast pouring pipe 2 and the pouring channel are arranged opposite to the post-cast strip and cover the upper part of the post-cast strip. When the post-cast strip meets the pouring conditions, the post-cast strip is poured through the reinforced concrete precast pouring pipe 2 and the pouring channel. Hoisting rings are respectively provided on the reinforced concrete precast cover plate 3 and the reinforced concrete precast sealing plate 1 to facilitate hoisting.
[0024] The reinforced concrete precast sealing plate 1 covers the reinforced concrete precast pouring pipe 2. A convex platform that can be inserted into the reinforced concrete precast pouring pipe 2 is provided on the lower end surface of the reinforced concrete precast sealing plate 1. Before pouring the post-cast strip, the reinforced concrete precast sealing plate 1 is covered on the reinforced concrete precast pouring pipe 2 to prevent sundries from falling into the post-cast strip area. When the settlement of each plate is stable and the post-cast strip pouring construction can be carried out, the reinforced concrete precast sealing plate 1 is hoisted away for post-cast strip pouring. To ensure the firmness of the structure, a tapered strengthening base ring 7 is poured between the outer periphery of the bottom of the reinforced concrete precast pouring pipe 2 and the reinforced concrete precast cover plate 3.
[0025] The bottom formwork assembly includes diamond plate 4 and anchor bolts 6. Both ends of the diamond plate 4 are anchored to the lower end face of the cast-in-place slab 10 through the anchor bolts 6, and the diamond plate 4 is arranged facing the post-cast strip 10. A stiffening channel steel 5 is also provided on the lower end face of the diamond plate 4; multiple pieces of the stiffening channel steel 5 are arranged horizontally along the post-cast strip 10, and the stiffening channel steel 5 is used to increase the strength of the diamond plate 4.
[0026] In this embodiment, the precast concrete is C30 and the steel is Q235B.
[0027] An example of the implementation process of the present utility model:
[0028] The bottom formwork assembly is prefabricated in the factory or on-site, improving the construction efficiency.
[0029] (1) Install the bottom formwork assembly within the scope of the post-cast strip when formwork is supported for the basement top slab.
[0030] (2) After the basement top slab is poured and reaches the required strength, install the cover plate assembly of the post-cast strip, and then backfill can be carried out. Pour the post-cast strip according to the requirements (when the settlements of each structure are stable).
[0031] The size of the precast reinforced concrete cover plate 3 is 900mm×1100mm, and φ12 lifting rings are provided on the cover plate; precast reinforced concrete pipes 2 with D300 and a wall thickness of 50mm; precast reinforced concrete sealing plates 1 with a diameter of 300mm and a thickness of 60mm and φ8 lifting rings are provided.
[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present utility model.
Claims
1. A post-casting strip is first closed and then cast, characterized in that: The invention comprises a bottom formwork assembly and a cover plate assembly; the cover plate assembly comprises a reinforced concrete precast cover plate (3), a reinforced concrete precast casting pipe (2) and a reinforced concrete precast sealing plate (1); the reinforced concrete precast casting pipe (2) is cast on the upper end surface of the reinforced concrete precast cover plate (3), and a casting channel which is connected to the reinforced concrete precast casting pipe (2) is provided on the reinforced concrete precast cover plate (3); the reinforced concrete precast sealing plate (1) covers the reinforced concrete precast casting pipe (2); the reinforced concrete precast cover plate (3) is arranged above the bottom formwork assembly; and the reinforced concrete precast casting pipe (2) is directly opposite to the post-casting strip.
2. The post-casting strip is first closed and then cast according to claim 1, characterized in that: The lower end surface of the prefabricated reinforced concrete sealing plate (1) is provided with a boss which can be inserted and received in the prefabricated reinforced concrete casting pipe (2).
3. The post-casting strip is first closed and then cast according to claim 1, characterized in that: A conical reinforced base ring (7) is cast between the outer periphery of the bottom of the precast reinforced concrete casting pipe (2) and the precast reinforced concrete cover plate (3).
4. The post-cast strip closed first and then cast structure according to any one of claims 1 to 3, characterized in that: The bottom mold assembly comprises a patterned steel plate (4) and anchor bolts (6); both ends of the patterned steel plate (4) are anchored to the lower end surface of the cast-in-place slab (10) through the anchor bolts (6), and the patterned steel plate (4) is arranged opposite to the post-casting strip.
5. The post-cast strip closed first and then cast structure according to claim 4 is characterized in that: The lower end surface of the patterned steel plate (4) is also provided with a stiffening steel (5); a plurality of stiffening steels (5) are arranged transversely along the post-casting strip.
6. The post-casting strip is first closed and then cast according to claim 1, characterized in that: The reinforced concrete prefabricated cover plate (3), the reinforced concrete prefabricated pouring pipe (2) and the reinforced concrete prefabricated sealing plate (1) are made of C30 concrete and the steel material is Q235B.
7. The post-casting strip is first closed and then cast according to claim 1, characterized in that: The prefabricated reinforced concrete cover plate (3) and the prefabricated reinforced concrete sealing plate (1) are respectively provided with lifting rings.