A cast-in-place concrete floor thickness control and pouring construction method
By first pouring a large area of concrete thinner than the floor slab thickness, combined with an S-shaped route and customized treads, the problem of inaccurate control of the thickness of cast-in-place concrete floor slabs was solved, achieving precise control and efficient construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA MCC5 GROUP CORP LTD
- Filing Date
- 2024-07-26
- Publication Date
- 2026-06-09
AI Technical Summary
Existing methods for controlling the thickness of cast-in-place concrete floor slabs lack precision, leading to thickness deviations and increasing the risk of cracking.
The method involves first pouring a large area of concrete that is less than the thickness of the floor slab, designing an S-shaped pouring route, and using customized pouring treads for localized concrete pouring. The thickness is controlled by overflow holes, and the construction process is simulated using a BIM model.
It achieves precise control of floor slab thickness, reduces the impact of human factors, improves construction quality and efficiency, reduces the workload of secondary verification, and ensures the quality of concrete pouring.
Smart Images
Figure CN118728084B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cast-in-place concrete floor slab construction technology, and more specifically, to a method for controlling the thickness of cast-in-place concrete floor slabs and for pouring them. Background Technology
[0002] In building structural components, floor slabs are important horizontal partitions. During construction, if the thickness of the floor slab is too large or too small, it will inevitably increase the deflection at the center of the floor slab, weaken the load-bearing capacity of the floor slab structure, and cause cracks in the cast-in-place concrete floor slab.
[0003] Currently, the main methods for controlling floor slab thickness include the string method, the stake method, and slab thickness controllers. The string method is simple and straightforward, but deviations in formwork and wall / column reinforcement during construction can lead to inaccurate elevation control lines and line swaying, directly causing deviations in slab thickness control. The stake method is highly susceptible to human error; the precision of the tools and the operator's technique can cause significant fluctuations in measured slab thickness data, greatly affecting the results of thickness control. Slab thickness controllers are relatively expensive, and furthermore, concrete within the controller's range is difficult to vibrate and compact. Summary of the Invention
[0004] The present invention aims to provide a method for controlling the thickness of cast-in-place concrete floor slabs and for pouring construction, in order to solve the problem that existing methods for controlling floor slab thickness have defects, cannot accurately control the thickness, and have deviations in thickness, which lead to cracking of cast-in-place concrete floor slabs.
[0005] This invention is achieved using the following technical solution:
[0006] This invention provides a method for controlling the thickness of cast-in-place concrete floor slabs and for pouring them, comprising the following steps:
[0007] S1: Pour a large area of concrete for the floor slab, with the pouring thickness being less than the floor slab thickness.
[0008] S2: Perform partial concrete pouring for the floor slab, and precisely control the thickness of the floor slab;
[0009] Step S2 specifically includes:
[0010] S201: Design the concrete pouring route for the floor slab;
[0011] S202: Install the first pouring treadmill at the starting point of the pouring route, and install the second pouring treadmill next to the first pouring treadmill along the pouring route;
[0012] The first and second pouring treads have the same structure, both including a tread plate and a support frame. The tread plate is fixedly installed on the support frame, and an overflow hole is opened at the center of the tread plate.
[0013] Workers stand on the second pouring slab and pour concrete into the area of the first pouring slab until the concrete overflows from the overflow hole on the first pouring slab, at which point the concrete pouring in that area is stopped.
[0014] After the area is poured, remove the first pouring slab and install it next to the second pouring slab along the pouring route. Then, finish the concrete surface in the area of the first pouring slab.
[0015] S203: Following step S202, pour concrete for the floor slab in a localized manner along the pouring route. The worker stands on the next pouring tread and pours concrete for the area of the previous pouring tread. After the area of the previous pouring tread is poured, remove the previous pouring tread and install it next to the next pouring tread. Then, finish the concrete in the area of the previous pouring tread. Repeat the above operation until the concrete pouring of the entire floor slab is completed.
[0016] S3: Perform concrete curing.
[0017] As a preferred technical solution:
[0018] Step S1 specifically includes:
[0019] Large-area concrete pouring for floor slabs, with a pouring thickness of two-thirds of the floor slab thickness.
[0020] As a preferred technical solution:
[0021] Step S201 specifically includes:
[0022] An S-shaped pouring route was adopted.
[0023] As a preferred technical solution:
[0024] The support frame is a steel reinforcement skeleton, and the tread plate is a steel plate welded to the steel reinforcement skeleton.
[0025] As a preferred technical solution:
[0026] The steel reinforcement support frame includes a horizontal steel mesh and vertical steel reinforcement legs, with multiple vertical steel reinforcement legs welded to the bottom of the horizontal steel mesh.
[0027] As a preferred technical solution:
[0028] The horizontal steel mesh includes longitudinal and transverse steel bars, with the longitudinal steel bars arranged perpendicular to the transverse steel bars, forming a mesh structure.
[0029] As a preferred technical solution:
[0030] In step S202:
[0031] The finishing route is the same as the pouring route.
[0032] As a preferred technical solution:
[0033] Step S3 specifically includes:
[0034] After the concrete is poured, it is moistened and cured by sprinkling water.
[0035] As a preferred technical solution:
[0036] The thickness control and pouring construction method of the cast-in-place concrete floor slab are simulated using a BIM model. After the simulation is completed, the concrete is poured on site.
[0037] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0038] By analyzing the shortcomings of cast-in-place concrete slab construction technology and conventional slab thickness control measures, this invention proposes a method for controlling the thickness and pouring of cast-in-place concrete slabs. First, a large area of concrete of a certain thickness (less than the slab thickness) is poured. Then, local concrete pouring is carried out along a predetermined pouring route. Customized pouring treads are used to assist in controlling the slab thickness. This method is highly applicable, ensures accurate slab elevation, reduces the impact of human factors on slab thickness control during direct large-area pouring, guarantees concrete pouring quality, achieves precise control of slab thickness, improves slab construction quality, increases the pass rate of cast-in-place concrete slab thickness, and significantly reduces the workload of manual secondary verification of slab elevation during pouring, thus improving construction efficiency. Attached Figure Description
[0039] Figure 1 This is a flowchart of the cast-in-place concrete floor slab thickness control and pouring construction method described in this invention.
[0040] Figure 2 This is a schematic diagram of the pouring route described in this invention.
[0041] Figure 3 This is a top view of the first pouring treadle described in this invention.
[0042] Figure 4 for Figure 3 Perspective view.
[0043] Figure 5 for Figure 4 A cross-sectional view along the AA direction.
[0044] Figure 6 for Figure 4 Cross-sectional view along the BB direction.
[0045] Icons: 1-Pedal board surface, 2-Support frame, 3-Overflow hole, 201-Horizontal steel mesh, 202-Vertical steel support leg. Detailed Implementation
[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0047] Example 1
[0048] like Figure 1 As shown in the figure, this embodiment proposes a method for controlling the thickness of cast-in-place concrete floor slabs and for pouring construction, including the following steps:
[0049] S1: Pour a large area of concrete for the floor slab, with the pouring thickness being less than the floor slab thickness.
[0050] Pour concrete over a large area of the floor slab, with a thickness approximately two-thirds of the slab thickness. Here, "large area" is a description relative to "partial." "Large area" can refer to the entire floor slab area or a portion of it, only that the area is larger. When "large area" refers to the entire floor slab area, step S1 is: pour the entire floor slab concrete, with a thickness less than the slab thickness. However, it is not limited to pouring two-thirds of the slab thickness; for example, pouring half the slab thickness is also acceptable, as long as it does not exceed the slab thickness.
[0051] S2: Perform partial concrete pouring for the floor slab, and precisely control the thickness of the floor slab;
[0052] Step S2 specifically includes:
[0053] S201: Design the concrete pouring route for the floor slab; in this embodiment, an S-shaped pouring route is adopted, such as... Figure 2 As shown, an S-shaped pouring route can achieve continuous pouring construction. The direction indicated by the arrow in the figure is the direction of the pouring route; however, it is not limited to an S-shaped pouring route, other pouring routes are also acceptable, as long as the concrete pouring of the entire floor slab is completed.
[0054] S202: Install the first pouring treadmill at the starting point of the pouring route, and install the second pouring treadmill next to the first pouring treadmill along the pouring route;
[0055] The first and second pouring treads have the same structure, such as... Figures 3-6As shown, each includes a pedal surface 1 and a support frame 2. The pedal surface 1 is fixedly installed on the support frame 2, and an overflow hole 3 is provided at the center of the pedal surface 1. In this embodiment, the support frame 2 is a steel reinforcement support skeleton, and the pedal surface 1 is a steel plate welded to the steel reinforcement support skeleton. The steel reinforcement support skeleton includes a horizontal steel mesh 201 and vertical steel reinforcement legs 202. Multiple vertical steel reinforcement legs 202 are welded to the bottom of the horizontal steel mesh 201. The horizontal steel mesh 201 includes longitudinal steel bars and transverse steel bars. The longitudinal steel bars are arranged perpendicular to the transverse steel bars, and the longitudinal steel bars and transverse steel bars form a mesh structure.
[0056] Workers stand on the second pouring tread and pour concrete into the area of the first pouring tread until the concrete overflows from the overflow hole 3 on the first pouring tread, then stop pouring concrete in that area to precisely control the thickness of the floor slab in that area.
[0057] After the area is poured, the first pouring slab is removed and installed next to the second pouring slab along the pouring route. Then the concrete in the area of the first pouring slab is finished. The finishing can fill the steel bar holes formed by the vertical steel bar support legs 202 in the first pouring slab. The finishing can ensure the flatness and uniformity of the concrete and ensure that the pouring height of the concrete meets the requirements.
[0058] S203: Following step S202, pour concrete for the floor slab in a localized manner along the pouring route. The worker stands on the next pouring tread and pours concrete for the area of the previous pouring tread. After the area of the previous pouring tread is poured, remove the previous pouring tread and install it next to the next pouring tread. Then, finish the concrete in the area of the previous pouring tread. Repeat the above operation until the concrete pouring of the entire floor slab is completed.
[0059] According to this step, the finishing route is consistent with the pouring route.
[0060] S3: Perform concrete curing;
[0061] After the concrete is poured, it should be moistened with water for 14 days for curing.
[0062] The above method for pouring floor slab concrete involves first pouring a large area of concrete of a certain thickness (less than the actual floor slab thickness), and then pouring local concrete along a predetermined pouring route. Custom-designed pouring treads are used to assist in controlling the floor slab thickness. This method is highly applicable, ensures accurate floor slab elevation, reduces the impact of human factors on floor slab thickness control during direct large-area pouring, achieves precise control of floor slab thickness, improves floor slab construction quality, increases the pass rate of cast-in-place concrete floor slab thickness, and significantly reduces the workload of manual secondary verification of floor slab elevation during pouring, thus improving construction efficiency.
[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for controlling the thickness of cast-in-place concrete floor slabs and for pouring them, characterized in that: Includes the following steps: S1: Pour a large area of concrete for the floor slab, with the pouring thickness being less than the thickness of the floor slab. S2: Perform partial concrete pouring for the floor slab, and precisely control the thickness of the floor slab; Step S2 specifically includes: S201: Design the concrete pouring route for the floor slab; S202: Install the first pouring treadmill at the starting point of the pouring route, and install the second pouring treadmill next to the first pouring treadmill along the pouring route; The first and second pouring treads have the same structure, both including a tread plate and a support frame. The tread plate is fixedly installed on the support frame, and an overflow hole is opened at the center of the tread plate. Workers stand on the second pouring slab and pour concrete into the area of the first pouring slab until the concrete overflows from the overflow hole on the first pouring slab, at which point the concrete pouring in that area is stopped. After the area is poured, the first pouring slab is removed and installed next to the second pouring slab along the pouring route. Then the concrete in the area of the first pouring slab is finished. S203: Following step S202, pour concrete for the floor slab in a localized manner along the pouring route. The worker stands on the next pouring tread and pours concrete for the area of the previous pouring tread. After the area of the previous pouring tread is poured, remove the previous pouring tread and install it next to the next pouring tread. Then, finish the concrete in the area of the previous pouring tread. Repeat the above operation until the concrete pouring of the entire floor slab is completed. S3: Perform concrete curing.
2. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: Step S1 specifically includes: Large-area concrete pouring for floor slabs, with a pouring thickness of two-thirds of the floor slab thickness.
3. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: Step S201 specifically includes: An S-shaped pouring route was adopted.
4. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: The support frame is a steel reinforcement skeleton, and the tread plate is a steel plate welded to the steel reinforcement skeleton.
5. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 4, characterized in that: The steel reinforcement support frame includes a horizontal steel mesh and vertical steel reinforcement legs, with multiple vertical steel reinforcement legs welded to the bottom of the horizontal steel mesh.
6. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 5, characterized in that: The horizontal steel mesh includes longitudinal and transverse steel bars, with the longitudinal steel bars arranged perpendicular to the transverse steel bars, forming a mesh structure.
7. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: In step S202: The finishing route is the same as the pouring route.
8. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: Step S3 specifically includes: After the concrete is poured, it is moistened and cured by sprinkling water.
9. The method for controlling the thickness of cast-in-place concrete floor slabs and the pouring construction method according to claim 1, characterized in that: The thickness control and pouring construction method of the cast-in-place concrete floor slab are simulated using a BIM model. After the simulation is completed, the concrete is poured on site.