Y-shaped column and construction method thereof

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a Y-shaped column and a construction method thereof.The Y-shaped column comprises a first pouring unit, two second pouring units, two third pouring units, two fourth pouring units, two fifth pouring units and two sixth pouring units; the first pouring unit is arranged at the bottoms of the two sets of second pouring units, the two sets of second pouring units and the first pouring unit are of a Y-shaped structure formed by splicing, the bottoms of the two sets of third pouring units are arranged at the tops of the second pouring units, and hoisting operation cannot be smoothly conducted through a tower crane and a truck crane; a truck crane, hoist and crank arm vehicle combined dismantling mode is adopted for solving the problem; the bottom-to-top dismantling sequence is adopted, the adjacent formworks are separated through the self weight of the formworks, and the problem that the adjacent steel formworks are difficult to dismantle due to the fact that connection is too tight and seamless is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a Y-shaped column and a construction method thereof. Background Art

[0002] At present, in the process of designing high-end office buildings, super-high Y-shaped columns are used to enhance the visual impact of the building. However, during the construction of the oblique column part of the 18m super-high Y-shaped column, a large lateral force will be applied to the supporting frame, and there are no beams and slabs around it, so it is impossible to set up wall connecting parts, which makes it easy for the whole building to overturn. In addition, there is an overweight beam designed between the two oblique columns just above the Y-shaped column, and the traditional frame erection method cannot complete the beam formwork.

[0003] When the formwork is being removed, tower cranes and truck cranes are unable to perform normal lifting work due to obstruction from the upper beams and slabs; and because the steel formwork has tight joints, mechanical tools (jacks) are required for removal. The traditional "install later, dismantle first" removal method is more dangerous and difficult to construct due to its excessive height and the obstruction of the frame to lift. Summary of the invention

[0004] In view of the above problems, the present invention provides a Y-shaped column, including a first casting unit, two groups of second casting units, two groups of third casting units, two groups of fourth casting units, two groups of fifth casting units and two groups of sixth casting units; the first casting unit is arranged at the bottom of the two groups of second casting units, and the two groups of the second casting units and the first casting unit are spliced ​​into a Y-shaped structure, the bottoms of the two groups of the third casting units are arranged at the top of the second casting units, the bottoms of the two groups of the fourth casting units are arranged at the top of the third casting units, the bottoms of the two groups of the fifth casting units are arranged at the top of the fourth casting units, and the bottoms of the two groups of the sixth casting units are arranged at the top of the fifth casting units.

[0005] Furthermore, the first casting unit includes a first Y-shaped support; the outside of the first Y-shaped support is covered with a first section of concrete layer.

[0006] Furthermore, the second casting unit includes a second Y-shaped support; the exterior of the second Y-shaped support is covered with a second section of concrete layer, and the bottom of the second Y-shaped support is welded and fixed to the top of the first Y-shaped support.

[0007] Furthermore, the third casting unit includes a third Y-shaped support; the outside of the third Y-shaped support is covered with a third section of concrete layer, and the bottom of the third Y-shaped support is welded and fixed to the top of the second Y-shaped support.

[0008] Furthermore, the fourth casting unit includes a fourth Y-shaped support; the outside of the fourth Y-shaped support is covered with a fourth section of concrete layer, and the bottom of the fourth Y-shaped support is welded and fixed to the top of the third Y-shaped support.

[0009] Furthermore, the fifth casting unit includes a fifth Y-shaped support; the outside of the fifth Y-shaped support is covered with a fifth concrete layer, and the bottom of the fifth Y-shaped support is welded and fixed to the top of the fourth Y-shaped support.

[0010] Furthermore, the sixth casting unit includes a sixth Y-shaped support; the exterior of the sixth Y-shaped support is covered with a sixth concrete layer, and the bottom of the sixth Y-shaped support is welded and fixed to the top of the fifth Y-shaped support.

[0011] A Y-shaped column construction method comprises the following steps:

[0012] By installing a first Y-shaped support on the construction ground, and setting up a scaffold around the first Y-shaped support, so that the height of the scaffold is the same as the height of the first Y-shaped support;

[0013] Furthermore, a gap for erecting the first aluminum film is reserved between the first Y-shaped support and the erection scaffolding;

[0014] By erecting a first aluminum film on the construction ground, the erected first aluminum film is sleeved around the first Y-shaped support;

[0015] Furthermore, a gap for pouring the first section of concrete is reserved between the first Y-shaped support and the first aluminum film;

[0016] The construction workers stand behind the scaffolding and pour concrete into the first aluminum film to form the first concrete layer;

[0017] By installing a second Y-shaped support on the top of the first Y-shaped support, and setting up a scaffold again on the top of the scaffold around the first Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the second Y-shaped support;

[0018] Furthermore, a gap for erecting the second aluminum film is reserved between the second Y-shaped support and the erection scaffolding;

[0019] The second aluminum film is laid on the top of the first aluminum film, so that the laid second aluminum film is sleeved around the second Y-shaped support;

[0020] Furthermore, a gap for pouring the second section of concrete is reserved between the second Y-shaped support and the second aluminum membrane;

[0021] The construction workers stand behind the scaffolding and pour concrete into the second aluminum film to form the second concrete layer;

[0022] By installing a third Y-shaped support on the top of the second Y-shaped support, and setting up a scaffold again on the top of the scaffold around the third Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the third Y-shaped support;

[0023] Furthermore, a gap for erecting the third aluminum film is reserved between the third Y-shaped support and the erection scaffolding;

[0024] The third aluminum film is laid on the top of the second aluminum film, so that the laid third aluminum film is sleeved around the third Y-shaped support;

[0025] Furthermore, a gap for pouring the third section of concrete is reserved between the third Y-shaped support and the third aluminum membrane;

[0026] The construction workers stand behind the scaffolding and pour concrete into the third aluminum film to form the third concrete layer;

[0027] By installing a fourth Y-shaped support on the top of the third Y-shaped support, and setting up a scaffold again on the top of the scaffold around the fourth Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the fourth Y-shaped support;

[0028] Furthermore, a gap for erecting the fourth aluminum film is reserved between the fourth Y-shaped support and the erection scaffolding;

[0029] The fourth aluminum film is installed on the top of the third aluminum film, so that the installed fourth aluminum film is sleeved around the fourth Y-shaped support;

[0030] Furthermore, a gap for pouring the fourth section of concrete is reserved between the fourth Y-shaped support and the fourth aluminum membrane;

[0031] The construction workers stand behind the scaffolding and pour concrete into the fourth aluminum film to form the fourth concrete layer;

[0032] By installing the fifth Y-shaped support on the top of the fourth Y-shaped support, and setting up the scaffold again on the top of the scaffold around the fifth Y-shaped support, the height of the scaffold after setting up is made to be the same level as the height of the fifth Y-shaped support;

[0033] Furthermore, a gap for erecting the fifth aluminum film is reserved between the fifth Y-shaped support and the erection scaffolding;

[0034] The fifth aluminum film is installed on the top of the fourth aluminum film, so that the installed fifth aluminum film is sleeved around the fifth Y-shaped support;

[0035] Furthermore, a gap for pouring the fifth section of concrete is reserved between the fifth Y-shaped support and the fifth aluminum membrane;

[0036] The construction workers stand behind the scaffolding and pour concrete into the fifth aluminum film to form the fifth concrete layer;

[0037] By installing the sixth Y-shaped support on the top of the fifth Y-shaped support, and setting up the scaffold again on the top of the scaffold around the sixth Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the sixth Y-shaped support;

[0038] Furthermore, a gap for erecting the sixth aluminum film is reserved between the sixth Y-shaped support and the erection scaffolding;

[0039] The sixth aluminum film is installed on the top of the fifth aluminum film, so that the installed sixth aluminum film is sleeved around the sixth Y-shaped support;

[0040] Furthermore, a gap for pouring the sixth section of concrete is reserved between the sixth Y-shaped support and the sixth aluminum membrane;

[0041] The construction workers stand on the scaffolding and pour concrete into the sixth aluminum membrane to form the sixth concrete layer.

[0042] The beneficial effects of the present invention are:

[0043] 1. When the lifting operation cannot be carried out smoothly by tower crane and automobile crane, a combination of automobile crane + hoist + articulated arm truck is used to solve the problem; a "bottom-to-top" demolition sequence is adopted, and the adjacent templates are separated by the deadweight of the templates to solve the problem of difficulty in demolition due to the tight connection between adjacent steel templates without gaps, thereby reducing the danger and difficulty of construction.

[0044] 2. The problem of the tower crane's weight not being able to meet the requirements of one-time lifting is effectively solved by erecting the frame in sections, hoisting the steel columns in sections, and installing the steel formwork in sections. The ultra-high Y-shaped columns are cast in sections with concrete, which facilitates timely vibration during the pouring process, eliminating the trouble of opening vibration holes in each section of the steel formwork, and avoiding the risk of incomplete vibration due to excessively dense steel bars, which ultimately leads to quality defects.

[0045] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 A schematic diagram of the structure of a Y-shaped column according to an embodiment of the present invention is shown;

[0048] Figure 2 A schematic structural diagram of a first pouring unit according to an embodiment of the present invention is shown;

[0049] Figure 3 A schematic structural diagram of a second pouring unit according to an embodiment of the present invention is shown;

[0050] Figure 4 A schematic diagram showing the structure of the third pouring unit according to an embodiment of the present invention is shown;

[0051] Figure 5 A schematic diagram showing the structure of a fourth pouring unit according to an embodiment of the present invention is shown;

[0052] Figure 6 A schematic diagram showing the structure of a fifth pouring unit according to an embodiment of the present invention is shown;

[0053] Figure 7 A schematic structural diagram of the sixth pouring unit according to an embodiment of the present invention is shown.

[0054] In the figure: 1, the first casting unit; 11, the first Y-shaped support; 12, the first section of concrete layer; 2, the second casting unit; 21, the second Y-shaped support; 22, the second section of concrete layer; 3, the third casting unit; 31, the third Y-shaped support; 32, the third section of concrete layer; 4, the fourth casting unit; 41, the fourth Y-shaped support; 42, the fourth section of concrete layer; 5, the fifth casting unit; 51, the fifth Y-shaped support; 52, the fifth section of concrete layer; 6, the sixth casting unit; 61, the sixth Y-shaped support; 62, the sixth section of concrete layer. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The embodiment of the present invention provides a Y-shaped column, comprising a first casting unit 1, two groups of second casting units 2, two groups of third casting units 3, two groups of fourth casting units 4, two groups of fifth casting units 5 and two groups of sixth casting units 6; illustratively, Figure 1 shown.

[0057] The first casting unit 1 is arranged at the bottom of the two groups of second casting units 2, and the two groups of the second casting units 2 and the first casting unit 1 are spliced ​​into a Y-shaped structure, the bottoms of the two groups of the third casting units 3 are arranged at the top of the second casting units 2, the bottoms of the two groups of the fourth casting units 4 are arranged at the top of the third casting units 3, the bottoms of the two groups of the fifth casting units 5 are arranged at the top of the fourth casting units 4, and the bottoms of the two groups of the sixth casting units 6 are arranged at the top of the fifth casting units 5.

[0058] The first casting unit 1 includes a first Y-shaped support 11; illustratively, Figure 2 shown.

[0059] The first Y-shaped support 11 is externally covered with a first concrete layer 12 .

[0060] The second casting unit 2 includes a second Y-shaped support 21; illustratively, as Figure 3 shown.

[0061] The second Y-shaped support 21 is covered with a second concrete layer 22 , and the bottom of the second Y-shaped support 21 is welded and fixed to the top of the first Y-shaped support 11 .

[0062] The third pouring unit 3 includes a third Y-shaped support 31; illustratively, Figure 4 shown.

[0063] The third Y-shaped support 31 is covered with a third concrete layer 32 , and the bottom of the third Y-shaped support 31 is welded and fixed to the top of the second Y-shaped support 21 .

[0064] The fourth casting unit 4 includes a fourth Y-shaped support 41; illustratively, as Figure 5 shown.

[0065] The fourth Y-shaped support 41 is covered with a fourth concrete layer 42 , and the bottom of the fourth Y-shaped support 41 is welded and fixed to the top of the third Y-shaped support 31 .

[0066] The fifth pouring unit 5 includes a fifth Y-shaped support 51; illustratively, as Figure 6 shown.

[0067] The fifth Y-shaped support 51 is covered with a fifth concrete layer 52 on its exterior, and the bottom of the fifth Y-shaped support 51 is welded and fixed to the top of the fourth Y-shaped support 41 .

[0068] The sixth pouring unit 6 includes a sixth Y-shaped support 61; illustratively, as Figure 7 shown.

[0069] The sixth Y-shaped support 61 is covered with a sixth concrete layer 62 on its exterior, and the bottom of the sixth Y-shaped support 61 is welded and fixed to the top of the fifth Y-shaped support 51 .

[0070] The working principle of a Y-shaped column proposed in an embodiment of the present invention is as follows:

[0071] The design and use of customized steel formwork solves the shortcomings of traditional wooden formwork and aluminum formwork due to insufficient material strength and overall rigidity, which cannot withstand the lateral pressure when pouring concrete on the oblique column of the Y-shaped column. It also avoids the problems of misalignment of the upper and lower layers and leakage of mortar at the joints that may occur when manually assembling the formwork.

[0072] The Y-shaped column frame is connected with the surrounding super-high cantilever beam frame and designed and calculated in a unified manner to ensure that the frame strength, overall rigidity and stability meet the construction requirements. Since the outer frame of the cantilever beam cannot be equipped with wall connecting parts, the super-high beam frame is connected with the cast Y-shaped column to solve the problem of insufficient stability caused by the super-high frame;

[0073] For the KL17(3B) support system, the method of increasing the spacing between the frame poles is adopted to solve the problem that the formwork cannot be supported due to the limitation of the Y-column. At the same time, measures such as increasing the number of poles and replacing the square steel back ribs with channel steel are taken to strengthen the system to solve the problems of insufficient frame stability and excessive back rib deflection caused by the increase in the spacing between the poles.

[0074] Use BIM to deepen the design and construction process simulation, combined with finite element stress analysis, to timely and dynamically adjust the steel formwork and support frame construction process during the scheme design stage to ensure construction safety, efficiency and quality;

[0075] The Y-shaped column adopts a segmented construction mode: the frame is erected in segments, the steel column is hoisted in segments, and the steel formwork is installed in segments, which effectively solves the problem that the tower crane cannot lift the weight in one go; the ultra-high Y-shaped column is cast in segments with concrete, which is convenient for timely vibration during the pouring process, eliminating the trouble of opening vibration holes in each section of the steel formwork, and avoiding the risk of imperfect vibration due to too dense steel bars, which ultimately leads to quality defects;

[0076] When dismantling the Y-column steel formwork, due to the limitations of the upper beam and the lower frame, the tower crane and the truck crane could not perform the lifting operation smoothly. The problem was solved by using a combined dismantling mode of a truck crane + hoist + articulated boom truck. The "bottom-up" dismantling sequence was adopted, and the adjacent formworks were separated by their own weight, solving the problem of difficulty in dismantling due to the adjacent steel formworks being too tightly connected and without gaps.

[0077] Based on the above-mentioned Y-shaped column, an embodiment of the present invention further provides a construction method of a Y-shaped column, comprising the following steps:

[0078] Construction of the first pouring unit 1:

[0079] By installing the first Y-shaped support 11 on the construction ground, and setting up a scaffold around the first Y-shaped support 11, so that the height of the scaffold is the same as the height of the first Y-shaped support 11;

[0080] Furthermore, a gap for erecting the first aluminum film is reserved between the first Y-shaped support 11 and the erection scaffolding;

[0081] By erecting the first aluminum film on the construction ground, the erected first aluminum film is sleeved around the first Y-shaped support 11;

[0082] Furthermore, a gap for pouring the first section of concrete is reserved between the first Y-shaped support 11 and the first aluminum film;

[0083] The construction workers stand behind the scaffolding and pour concrete into the first aluminum film to form a first concrete layer 12;

[0084] Construction of the second pouring unit 2:

[0085] By installing the second Y-shaped support 21 on the top of the first Y-shaped support 11, and setting up a scaffold again on the top of the scaffold around the first Y-shaped support 11, so that the height of the scaffold after setting up is the same level as the height of the second Y-shaped support 21;

[0086] Furthermore, a gap for erecting the second aluminum film is reserved between the second Y-shaped support 21 and the erection scaffolding;

[0087] By laying a second aluminum film on top of the first aluminum film, the laid second aluminum film is sleeved around the second Y-shaped support 21;

[0088] Furthermore, a gap for pouring the second section of concrete is reserved between the second Y-shaped support 21 and the second aluminum film;

[0089] The construction workers stand behind the scaffolding and pour concrete into the second aluminum film to form a second concrete layer 22;

[0090] Construction of the third pouring unit 3:

[0091] By installing the third Y-shaped support 31 on the top of the second Y-shaped support 21, and setting up a scaffold again on the top of the scaffold around the third Y-shaped support 31, so that the height of the scaffold after setting up is the same level as the height of the third Y-shaped support 31;

[0092] Furthermore, a gap for erecting the third aluminum film is reserved between the third Y-shaped support 31 and the erection scaffolding;

[0093] The third aluminum film is laid on top of the second aluminum film so that the laid third aluminum film is sleeved around the third Y-shaped support 31;

[0094] Furthermore, a gap for pouring the third section of concrete is reserved between the third Y-shaped support 31 and the third aluminum film;

[0095] The construction workers stand behind the scaffolding and pour concrete into the third aluminum film to form a third concrete layer 32;

[0096] Construction of the fourth pouring unit 4:

[0097] By installing the fourth Y-shaped support 41 on the top of the third Y-shaped support 31, and setting up a scaffold again on the top of the scaffold around the fourth Y-shaped support 41, so that the height of the scaffold after setting up is the same level as the height of the fourth Y-shaped support 41;

[0098] Furthermore, a gap for erecting the fourth aluminum film is reserved between the fourth Y-shaped support 41 and the erection scaffolding;

[0099] By laying a fourth aluminum film on top of the third aluminum film, the laid fourth aluminum film is sleeved around the fourth Y-shaped support 41;

[0100] Furthermore, a gap for pouring the fourth section of concrete is reserved between the fourth Y-shaped support 41 and the fourth aluminum film;

[0101] The construction workers stand behind the scaffolding and pour concrete into the fourth aluminum film to form a fourth concrete layer 42;

[0102] Construction of the fifth pouring unit 5:

[0103] By installing the fifth Y-shaped support 51 on the top of the fourth Y-shaped support 41, and setting up a scaffold again on the top of the scaffold around the fifth Y-shaped support 51, so that the height of the scaffold after setting up is the same level as the height of the fifth Y-shaped support 51;

[0104] Furthermore, a gap for erecting the fifth aluminum film is reserved between the fifth Y-shaped support 51 and the erection scaffolding;

[0105] By laying a fifth aluminum film on top of the fourth aluminum film, the laid fifth aluminum film is sleeved around the fifth Y-shaped support 51;

[0106] Furthermore, a gap for pouring the fifth section of concrete is reserved between the fifth Y-shaped support 51 and the fifth aluminum film;

[0107] The construction workers stand behind the scaffolding and pour concrete into the fifth aluminum film to form a fifth concrete layer 52;

[0108] Construction of the sixth pouring unit 6:

[0109] By installing the sixth Y-shaped support 61 on the top of the fifth Y-shaped support 51, and setting up a scaffold again on the top of the scaffold around the sixth Y-shaped support 61, so that the height of the scaffold after setting up is the same level as the height of the sixth Y-shaped support 61;

[0110] Furthermore, a gap for erecting the sixth aluminum film is reserved between the sixth Y-shaped support 61 and the erection scaffolding;

[0111] The sixth aluminum film is laid on the top of the fifth aluminum film, so that the laid sixth aluminum film is sleeved around the sixth Y-shaped support 61;

[0112] Furthermore, a gap for pouring the sixth section of concrete is reserved between the sixth Y-shaped support 61 and the sixth aluminum film;

[0113] The construction workers stand on the scaffolding and pour concrete into the sixth aluminum membrane to form a sixth concrete layer 62 .

[0114] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Y-shaped column, characterized in that: The invention comprises a first pouring unit (1), two groups of second pouring units (2), two groups of third pouring units (3), two groups of fourth pouring units (4), two groups of fifth pouring units (5) and two groups of sixth pouring units (6); the first pouring unit (1) is arranged at the bottom of the two groups of second pouring units (2), and the two groups of second pouring units (2) and the first pouring unit (1) are spliced ​​to form a Y-shaped structure, the bottoms of the two groups of third pouring units (3) are arranged at the top of the second pouring units (2), the bottoms of the two groups of fourth pouring units (4) are arranged at the top of the third pouring units (3), the bottoms of the two groups of fifth pouring units (5) are arranged at the top of the fourth pouring units (4), and the bottoms of the two groups of sixth pouring units (6) are arranged at the top of the fifth pouring units (5).

2. The Y-shaped column according to claim 1, characterized in that: The first casting unit (1) comprises a first Y-shaped support (11); the exterior of the first Y-shaped support (11) is coated with a first section of concrete layer (12).

3. The Y-shaped column according to claim 1, characterized in that: The second casting unit (2) comprises a second Y-shaped support (21); the exterior of the second Y-shaped support (21) is covered with a second section of concrete layer (22), and the bottom of the second Y-shaped support (21) is welded and fixed to the top of the first Y-shaped support (11).

4. The Y-shaped column according to claim 1, characterized in that: The third casting unit (3) comprises a third Y-shaped support (31); the outside of the third Y-shaped support (31) is covered with a third section of concrete layer (32), and the bottom of the third Y-shaped support (31) is welded and fixed to the top of the second Y-shaped support (21).

5. The Y-shaped column according to claim 1, characterized in that: The fourth casting unit (4) comprises a fourth Y-shaped support (41); the outside of the fourth Y-shaped support (41) is covered with a fourth section of concrete layer (42), and the bottom of the fourth Y-shaped support (41) is welded and fixed to the top of the third Y-shaped support (31).

6. The Y-shaped column according to claim 1, characterized in that: The fifth casting unit (5) comprises a fifth Y-shaped support (51); the outside of the fifth Y-shaped support (51) is covered with a fifth section of concrete layer (52), and the bottom of the fifth Y-shaped support (51) is welded and fixed to the top of the fourth Y-shaped support (41).

7. The Y-shaped column according to claim 1, characterized in that: The sixth casting unit (6) comprises a sixth Y-shaped support (61); the exterior of the sixth Y-shaped support (61) is covered with a sixth section of concrete layer (62), and the bottom of the sixth Y-shaped support (61) is welded and fixed to the top of the fifth Y-shaped support (51).

8. A construction method of a Y-shaped column according to any one of claims 1 to 7, characterized in that: The construction method comprises: By installing a first Y-shaped support on the construction ground, and setting up a scaffold around the first Y-shaped support, so that the height of the scaffold is the same as the height of the first Y-shaped support; Furthermore, a gap for erecting the first aluminum film is reserved between the first Y-shaped support and the erection scaffolding; By erecting a first aluminum film on the construction ground, the erected first aluminum film is sleeved around the first Y-shaped support; Furthermore, a gap for pouring the first section of concrete is reserved between the first Y-shaped support and the first aluminum film; The construction workers stand behind the scaffolding and pour concrete into the first aluminum film to form the first concrete layer; By installing a second Y-shaped support on the top of the first Y-shaped support, and setting up a scaffold again on the top of the scaffold around the first Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the second Y-shaped support; Furthermore, a gap for erecting the second aluminum film is reserved between the second Y-shaped support and the erection scaffolding; The second aluminum film is laid on the top of the first aluminum film, so that the laid second aluminum film is sleeved around the second Y-shaped support; Furthermore, a gap for pouring the second section of concrete is reserved between the second Y-shaped support and the second aluminum membrane; The construction workers stand behind the scaffolding and pour concrete into the second aluminum film to form the second concrete layer; By installing a third Y-shaped support on the top of the second Y-shaped support, and setting up a scaffold again on the top of the scaffold around the third Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the third Y-shaped support; Furthermore, a gap for erecting the third aluminum film is reserved between the third Y-shaped support and the erection scaffolding; The third aluminum film is laid on the top of the second aluminum film, so that the laid third aluminum film is sleeved around the third Y-shaped support; Furthermore, a gap for pouring the third section of concrete is reserved between the third Y-shaped support and the third aluminum membrane; The construction workers stand behind the scaffolding and pour concrete into the third aluminum film to form the third concrete layer; By installing a fourth Y-shaped support on the top of the third Y-shaped support, and setting up a scaffold again on the top of the scaffold around the fourth Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the fourth Y-shaped support; Furthermore, a gap for erecting the fourth aluminum film is reserved between the fourth Y-shaped support and the erection scaffolding; The fourth aluminum film is installed on the top of the third aluminum film, so that the installed fourth aluminum film is sleeved around the fourth Y-shaped support; Furthermore, a gap for pouring the fourth section of concrete is reserved between the fourth Y-shaped support and the fourth aluminum membrane; The construction workers stand behind the scaffolding and pour concrete into the fourth aluminum film to form the fourth concrete layer; By installing the fifth Y-shaped support on the top of the fourth Y-shaped support, and setting up the scaffold again on the top of the scaffold around the fifth Y-shaped support, the height of the scaffold after setting up is made to be the same level as the height of the fifth Y-shaped support; Furthermore, a gap for erecting the fifth aluminum film is reserved between the fifth Y-shaped support and the erection scaffolding; The fifth aluminum film is installed on the top of the fourth aluminum film, so that the installed fifth aluminum film is sleeved around the fifth Y-shaped support; Furthermore, a gap for pouring the fifth section of concrete is reserved between the fifth Y-shaped support and the fifth aluminum membrane; The construction workers stand behind the scaffolding and pour concrete into the fifth aluminum film to form the fifth concrete layer; By installing the sixth Y-shaped support on the top of the fifth Y-shaped support, and setting up the scaffold again on the top of the scaffold around the sixth Y-shaped support, so that the height of the scaffold after setting up is the same level as the height of the sixth Y-shaped support; Furthermore, a gap for erecting the sixth aluminum film is reserved between the sixth Y-shaped support and the erection scaffolding; The sixth aluminum film is installed on the top of the fifth aluminum film, so that the installed sixth aluminum film is sleeved around the sixth Y-shaped support; Furthermore, a gap for pouring the sixth section of concrete is reserved between the sixth Y-shaped support and the sixth aluminum membrane; The construction workers stand on the scaffolding and pour concrete into the sixth aluminum membrane to form the sixth concrete layer.

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