Method for Ensuring Verticality of Reserved Points between Upper and Lower Floors in Construction

Abstract

The present invention discloses a method for ensuring the verticality of reserved points between upper and lower floor slabs in construction. The method includes the following steps: S1, fabricate a positioning disk, and four positioning notches are opened on the circumferential surface of the positioning disk; S2, construct the support system and formwork of the first-floor slab; S3, construct the support system and formwork of the upper floor slab to be poured; S4, place the positioning disk on the bottom surface of the bottom formwork of the upper floor slab to be poured, and make the plumb bob vertically align with the reserved point of the first-floor slab; S5, draw marks on the bottom formwork along the positioning notches of the positioning disk; S6, connect the marks of the four positioning notches diagonally into a straight line, and the intersection point is the positioning point; S7, pass through the bottom formwork with a through-pin at the positioning point, and the center of the nail hole on the upper surface of the bottom formwork is the center point of the reserved point of the upper layer. The operation of the present invention is simple, with small errors, and can effectively ensure the vertical concentricity of the reserved points between the upper and lower floor slabs, thereby ensuring the reserved precision, reducing the chiseling of reserved holes, and improving the construction efficiency and construction quality.

Description

Technical Field

[0001] The present invention relates to building construction, and particularly to a method for ensuring the verticality of reserved points on upper and lower floor slabs in a building. Background Art

[0002] In building construction, reserved holes for vertical risers or balcony lighting fixtures are provided on each floor slab, and it is required that the vertical centerlines of the reserved holes on multiple floor slabs be concentric. When measuring and laying out the reserved points on site, they are laid out according to the axis of the nearest wall on the current floor during the structural construction. Since the measurements are carried out multiple times with the floors, error accumulation occurs. Eventually, in multi-story buildings, especially high-rise buildings, after the error accumulation of the upper and lower reserved points, the deviation between the upper and lower reserved points is relatively large, which brings inconvenience to the subsequent construction. When the deviation is too large, it is necessary to chisel holes, affecting the construction efficiency and quality. Summary of the Invention

[0003] The present invention aims to solve the above technical problems, and thus provides a method for ensuring the verticality of reserved points on upper and lower floor slabs in a building, improving the accuracy of the reserved points.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A method for ensuring the verticality of reserved points on upper and lower floor slabs in a building includes the following steps:

[0006] S1. Making a positioning disk

[0007] The positioning disk is circular, a round hole is opened at the center of the positioning disk, the upper end of a plumb line is fixedly connected in the round hole, the lower end of the plumb line is connected with a plumb bob, and four positioning notches are opened on the circumferential surface of the positioning disk;

[0008] S2. Construction of the support system and formwork for the first floor slab;

[0009] After the construction of the support system and formwork, locate the reserved points on the first floor and embed sleeves, then pour concrete and cure it;

[0010] S3. Construction of the support system and formwork for the upper floor slab to be poured;

[0011] S4. Place the positioning disk on the bottom surface of the bottom formwork of the upper floor slab to be poured, and make the plumb bob vertically align with the reserved point on the first floor slab;

[0012] S5. Draw marks on the bottom formwork along the positioning notches of the positioning disk;

[0013] S6. Connect the marks at the four positioning notches diagonally into straight lines, and the intersection point is the positioning point;

[0014] S7. Use a nail to pierce through the bottom formwork at the positioning point, and the center of the nail hole on the upper surface of the bottom formwork is the center point of the reserved point on the upper floor.

[0015] Compared with the prior art, the present invention adopting the above technical solution has the beneficial effects as follows:

[0016] The operation is simple, the error is small, and it can effectively ensure the vertical concentricity of the reserved points on the upper and lower floors of the floor slab, thereby ensuring the reserved accuracy, reducing the chiseling of reserved holes, and improving the construction efficiency and construction quality.

[0017] Furthermore, the optimized solution of the present invention is:

[0018] Two adjacent positioning notches are at 90 degrees.

[0019] The positioning notch is arc-shaped or triangular. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an elevation view of an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the positioning disk of an embodiment of the present invention.

[0022] In the figure: wall 1; first-floor slab 2; first-floor reserved point 3; plumb bob 4; suspension line 5; positioning disk 6; positioning notch 6-1; upper floor slab to be poured 7; upper-floor reserved point 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0024] Refer to Figure 1 , Figure 2 , this embodiment is a method for ensuring the verticality of reserved points on the upper and lower floors of a building, and is carried out according to the following steps:

[0025] S1. Fabricate the positioning disk

[0026] The positioning disk 6 is circular, a round hole is opened at the center of the positioning disk 6, the upper end of the suspension line 5 is fixedly connected in the round hole, the lower end of the suspension line 5 is connected to the plumb bob 4, four positioning notches 6-1 are opened on the circumferential surface of the positioning disk 6, the positioning notch 6-1 is arc-shaped or triangular, the positioning notches 6-1 are evenly arranged, and two adjacent positioning notches 6-1 are at 90 degrees;

[0027] S2. Construction of the support system and formwork for the first-floor slab;

[0028] For the construction of the support system and formwork of the first-floor slab 2, determine the first-floor reserved point 3 according to the design requirements and reserve it. The distance between the first-floor reserved point 3 and the wall 1 is L. Bury the casing, pour the concrete and cure it;

[0029] S3. Construction of the support system and formwork for the upper floor slab 7 to be poured;

[0030] S4. Place the positioning plate 6 on the bottom surface of the bottom formwork of the upper floor slab 7 to be concreted, and make the plumb bob 4 vertically align with the first-floor reserved point 3 of the first-floor slab 2. The center point of the first-floor reserved point 3 is the center of the circle of the casing.

[0031] S5. Draw a mark on the bottom formwork along the positioning notch 6-1 of the positioning plate 6.

[0032] S6. Connect the marks of the four positioning notches 6-1 diagonally into a straight line, and the intersection point is the positioning point.

[0033] S7. Pass through the bottom formwork at the positioning point with a through bolt, and the center of the circle of the nail hole on the upper surface of the bottom formwork is the center point of the upper-floor reserved point 8.

[0034] The present invention solves the problem of excessive cumulative error in the reserved holes for vertical building risers, and ensures the verticality of the reserved points for upper and lower pipes and the reserved points for balcony lamps.

[0035] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of the rights of the present invention accordingly. Any equivalent structural changes made by using the content of the specification and drawings of the present invention are included in the scope of the rights of the present invention.

Claims

1. A method for ensuring the verticality of reserved points between upper and lower floors in a building, comprising the following steps: S1. Fabricate a positioning plate The positioning plate is circular, with a round hole opened at the center of the positioning plate. The upper end of the plumb line is fixedly connected to the round hole, and the lower end of the plumb line is connected to a plumb bob. Four positioning notches are opened on the circumferential surface of the positioning plate. Two adjacent positioning notches form an angle of 90 degrees. The positioning notches are arc-shaped or triangular; S2. Construction of the support system and formwork for the first-floor slab After the support system and formwork are constructed, locate the reserved points on the first floor and embed sleeves, then pour concrete and cure; S3. Construction of the support system and formwork for the upper floor slab to be poured; S4. Place the positioning plate on the bottom surface of the bottom formwork of the upper floor slab to be poured, and make the plumb bob vertically align with the reserved points on the first-floor slab; S5. Draw marks on the bottom formwork along the positioning notches of the positioning plate; S6. Connect the marks at the four positioning notches diagonally into straight lines, and the intersection point is the positioning point; S7. Use a nail to pierce through the bottom formwork at the positioning point, and the center of the nail hole on the upper surface of the bottom formwork is the center point of the reserved points on the upper floor.

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