Prefabricated finished product staircase outer side concrete turnup

Abstract

The utility model discloses a prefabricated finished product staircase outer side concrete turnup. The turnup is in the shape of a right trapezoid right prism. A prefabricated finished product staircase outer side concrete turnup comprises a prefabricated finished product trapezoid straight prism concrete turnup, a through reserved hole is formed in the prefabricated finished product trapezoid straight prism concrete turnup, embedded steel bars are inserted into the reserved hole, finally high-strength cement is used for blocking, the embedded steel bars are embedded in advance before a staircase is poured, and the prefabricated finished product trapezoid straight prism concrete turnup is formed in the prefabricated finished product trapezoid straight prism concrete turnup. The other end of the connecting rod is connected with the prefabricated finished product trapezoidal straight prism concrete flange; the prefabricated finished product trapezoidal straight prism concrete turnup is connected with the cement mortar into a whole through the embedded steel bars; according to the prefabricated concrete flanging, the finished concrete flanging is prefabricated, the construction procedures of traditional post-pouring concrete flanging and the use amount of materials such as formwork frame materials can be reduced, the construction progress is accelerated, the site neatness is guaranteed, and compared with the post-pouring concrete flanging, the prefabricated concrete flanging is small in construction error and better in construction quality, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to an outer concrete flange of a prefabricated finished staircase. Background Art

[0002] A concrete flange is often designed on the side of the staircase that is not close to the wall to prevent debris, water, etc. from falling. According to the conventional stair flange method, it is necessary to wait until the stair structure is poured before the stair flange formwork is supported and concrete is poured. This process takes a long time to construct and the process is complicated. The formwork support and reinforcement and concrete pouring are also inconvenient, which can easily cause construction quality problems such as mold running and misalignment.

[0003] Therefore, we propose a prefabricated concrete flange on the outside of the stairwell to ensure construction quality, improve construction efficiency, and save materials such as formwork frames. Utility Model Content

[0004] The utility model aims to solve the problems of low efficiency, low quality and large input of template frame materials in the existing staircase flange construction process.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model discloses a concrete flange on the outer side of a prefabricated staircase, which comprises a right-angled trapezoidal concrete prism and a plurality of reserved holes for steel bars.

[0007] The plurality of steel bar reserved holes are arranged through the right-angled trapezoidal concrete prism and are perpendicular to one side of the right-angled side of the right-angled trapezoidal concrete prism.

[0008] In a specific embodiment, one side of the right-angled side of the right-angled trapezoidal concrete prism is a rough surface.

[0009] In a specific embodiment, the diameter of the steel bar reserved hole is larger than the reserved steel bar anchoring bar, and the steel bar reserved hole is filled with high-strength cement to fill the gap between the steel bar reserved hole and the reserved steel bar.

[0010] In a specific embodiment, the length of the right-angled trapezoidal concrete prism is less than 10 centimeters of the width of the stair tread, and the gap formed is filled with cement mortar to bond the right-angled trapezoidal concrete prism to the stair structure.

[0011] Compared with the prior art, the beneficial effects of the utility model include:

[0012] 1. By prefabricating the stair flanges, the quality of the flanged products is guaranteed, avoiding the quality risks of film expansion, honeycomb surface, etc. of cast-in-place concrete flanges.

[0013] 2. Changing the cast-in-place concrete flange to precast concrete flange reduces the use and cleaning of materials such as formwork frames and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the outer concrete flange of a prefabricated staircase.

[0015] Figure 2 The utility model is a schematic diagram of the outer concrete flange of a prefabricated staircase.

[0016] Figure 3 The utility model is a cross-sectional schematic diagram of the outer concrete flange of a prefabricated staircase.

[0017] Figure 4 The utility model is a schematic diagram of the actual application of the outer concrete flange of a prefabricated staircase.

[0018] Figure 5 Schematic diagram of embedded steel bars for stairs.

[0019] In the figure: 1. Right-angled trapezoidal concrete prism; 11. Rough surface on one side of the right-angled side of the right-angled trapezoidal prism; 2. Reserved holes for steel bars; 3. Cement mortar joints; 4. Staircase structure; 5. High-strength cement; 6. Reserved steel bars. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] See also Figure 1-5 The utility model provides a prefabricated finished staircase outer concrete flange, which is characterized by comprising a right-angled trapezoidal concrete prism 1 and a plurality of steel bar reserved holes 2. One side of the right-angled side of the right-angled trapezoidal concrete prism 1 is a rough surface 11 and is provided with a plurality of steel bar reserved holes 2.

[0022] like Figure 1 As shown, one side of the right-angled side of the right-angled trapezoidal concrete prism 1 is a rough surface 11.

[0023] As shown in 1-2, the right-angled trapezoidal concrete prism 1 is a right prism.

[0024] As shown in 1-3, the plurality of reserved steel bar holes 2 are vertically distributed on one side 11 of the right-angled side of the right-angled trapezoidal prism and penetrate the right-angled trapezoidal concrete prism 1.

[0025] like Figure 4 As shown, the rough surface and side surface of one side 11 of the right-angled side of the right-angled trapezoidal prism are bonded to the staircase structure 4 by cement mortar 3 .

[0026] like Figure 4-5 As shown, the right-angled trapezoidal concrete prism 1 is inserted into the embedded steel bar 6 that has been embedded in the stair structure 4 through the steel bar reserved hole 2, and the bottom is bonded to the stair structure 4 through cement mortar 3, and the gap between the steel bar reserved hole 2 and the reserved steel bar 6 is filled with high-strength cement 5 by grouting, so that the outer concrete flange of the above-mentioned prefabricated staircase is connected to the stair structure 4.

Claims

1. A prefabricated staircase outer concrete flange, characterized in that: It comprises a right-angled trapezoidal concrete prism (1) and a plurality of reserved steel bar holes (2); one side of the right-angled side of the right-angled trapezoidal concrete prism (1) is a rough rough surface (11) and is provided with a plurality of reserved steel bar holes (2).

2. The outer concrete flange of the prefabricated staircase according to claim 1 is characterized in that: The right-angled trapezoidal concrete prism (1) is a right prism.

3. The outer concrete flange of the prefabricated staircase according to claim 1 is characterized in that: The plurality of steel bar reserved holes (2) are vertically distributed on one side of the right-angled side of the right-angled trapezoidal concrete prism (1), and penetrate the right-angled trapezoidal concrete prism (1).

4. The outer concrete flange of the prefabricated staircase according to claim 1 is characterized in that: The rough surface (11) on one side of the right-angled side of the right-angled trapezoidal concrete prism (1) is bonded to the staircase structure by cement mortar.

5. The outer concrete flange of the prefabricated staircase according to claim 1 is characterized in that: After the right-angled trapezoidal concrete prism (1) is inserted into the embedded steel bars that have been pre-embedded in the staircase structure through the steel bar reserved hole (2), the bottom is bonded by cement mortar, and the steel bar reserved hole (2) and the reserved steel bar gap are filled by high-strength cement grouting, so that the outer concrete flange of the prefabricated staircase is connected to the staircase structure.

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