Construction method of petal-shaped double-layer wall

Abstract

The invention relates to a construction method of a petal-shaped double-layer wall, and relates to the technical field of engineering construction.The construction method comprises the following steps that a to-be-constructed double-layer wall is sequentially divided into a plurality of sections from bottom to top in the height direction, and the to-be-constructed double-layer wall comprises an outer wall and an inner wall; the outer wall is firstly expanded outwards and then contracted inwards relative to the inner wall in the vertical direction, the top of the outer wall is connected with the top of the inner wall, in the construction process, a corresponding formwork is placed on a floor, sectional type pouring is carried out, steel bars are reserved according to a wall column drawing of the next layer during construction, and the construction efficiency is improved. The reserved length, bending points and angles of the steel bars are adjusted according to design requirements for setting, the floor wall is formed through layer-by-layer concrete pouring, the hoisting difficulty is reduced, the wall is arranged to be in a petal shape formed by mutual staggering of the inner wall and the outer wall, the multiple sets of petal-shaped inner wall and outer wall are combined to form an ellipsoid shape, and the overall appearance attractiveness is improved.

Description

Technical Field

[0001] This invention relates to the field of engineering construction, and specifically to a construction method for a petal-shaped double-layer wall. Background Technology

[0002] In large construction sites such as theaters, double-wall structures, both internal and external, are often used to meet sound insulation requirements, achieving the same soundproofing as concrete walls. However, most existing projects use standardized steel formwork for reinforcement, which is expensive and difficult to install, resulting in lengthy construction times and potential delays. Therefore, measures are needed to address the issues of high formwork costs, difficult installation, and long construction times. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a construction method for a petal-shaped double-layer wall, solving the problems of high cost of existing formwork, difficulty in hoisting, and long construction time.

[0004] The technical solution to achieve the above objective is: a construction method for a petal-shaped double-layer wall, comprising the following steps: The double-layer wall to be constructed is divided into multiple sections along the height direction from bottom to top. The double-layer wall to be constructed includes an outer wall and an inner wall. The outer wall expands outward and then contracts inward relative to the inner wall in the vertical direction, and the top of the outer wall is connected to the top of the inner wall. The construction of each section is carried out in the order of division. When constructing the corresponding section, the corresponding steel bars and formwork are set up and concrete is poured in the formwork to complete the construction of the corresponding section. For the top section, construct the top section of the interior wall first, then construct the top section of the exterior wall. When constructing the top section of the exterior wall, diagonal bracing is installed at the top of the already constructed interior wall to support the formwork at the top section of the exterior wall. Once the top section of the exterior wall is completed, the construction of the double-layer wall is finished.

[0005] A further improvement of the technical solution of the present invention is that: when the first section is completed, a temporary floor slab is constructed between the first section of the outer wall and the inner wall, and scaffolding for the construction of subsequent sections is erected on the temporary floor slab.

[0006] A further improvement of the technical solution of the present invention is that: when constructing the section corresponding to the inward portion of the exterior wall, a connector is embedded on the outside of the corresponding section of the exterior wall, and the embedded connector is used to connect the corresponding scaffolding.

[0007] A further improvement to the technical solution of the present invention is that: when a section of construction is completed, a corresponding stairwell is set at the corresponding position on the outside of the outer wall.

[0008] A further improvement of the technical solution of the present invention is that: when a section is completed, a tie rod is embedded at a designed position on the side of the inner wall away from the outer wall, and the embedded tie rod is used to connect the corresponding auxiliary frame.

[0009] By utilizing the above technical solution, the technical effects achieved by the present invention compared to the prior art are as follows: This invention provides a construction method for a petal-shaped double-layer wall. During construction, corresponding formwork is placed on each floor for segmented pouring. Reinforcing bars are pre-reserved according to the drawings of the next floor's wall columns. The length, bending points, and angles of the pre-reserved reinforcing bars are adjusted according to design requirements. The floor walls are formed by pouring concrete layer by layer, reducing the difficulty of hoisting. The walls are designed as inner and outer double walls that intersect to form a petal shape. Multiple sets of petal-shaped inner and outer double walls are combined to form an ellipsoid, improving the overall aesthetic appearance.

[0010] By setting outward-extending load-bearing platforms on the outer wall surface as support points for the scaffolding on the outer wall surface, the cantilevered scaffolding is converted into a ground-supported scaffolding. The scaffolding is reinforced by connecting it to the disc-lock scaffolding with a second diagonal brace. A second embedded part is set between the disc-lock scaffolding and the outer wall to connect the two and ensure construction safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of scaffolding connection for a construction method of a petal-shaped double-layer wall according to the present invention.

[0012] Figure 2 This is a schematic diagram of the embedded parts in the construction method of a petal-shaped double-layer wall according to the present invention.

[0013] Figure 3 This is a schematic diagram of the diagonal bracing connection in the construction method of a petal-shaped double-layer wall according to the present invention.

[0014] Figure 4 This is a schematic diagram of the tie rod component in the construction method of a petal-shaped double-layer wall according to the present invention.

[0015] Figure 5 This is a schematic diagram of the construction platform for a construction method of a petal-shaped double-layer wall according to the present invention.

[0016] Figure 6 This is a wall construction drawing for a construction method of a petal-shaped double-layer wall according to the present invention.

[0017] Figure 7 This is a schematic diagram of the support platform connection in the construction method of a petal-shaped double-layer wall according to the present invention.

[0018] Figure 8 This is a cross-sectional view of the double-wall structure of a petal-shaped double-layer wall according to the present invention.

[0019] Figure 9 This is an overview diagram of the construction method for a petal-shaped double-layer wall according to the present invention.

[0020] Figure 10 This is a top view of the inner and outer walls of a construction method for a petal-shaped double-layer wall according to the present invention.

[0021] In the diagram: 1. First scaffolding; 11. Auxiliary scaffolding; 12. Temporary floor slab; 13. Temporary support; 14. Second scaffolding; 15. Third scaffolding; 2. First exterior wall formwork; 21. Second exterior wall formwork; 22. Third exterior wall formwork; 23. Fourth exterior wall formwork; 24. Interior wall formwork; 3. First stairwell; 31. Second stairwell; 4. First diagonal brace; 5. Support platform; 6. Disc-lock scaffolding; 7. Second diagonal brace; 8. First embedded part; 9. Tie rod; 10. Second embedded part. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] This invention provides a construction method for a petal-shaped double-layer wall. This method has the advantages of constructing the double-layer wall in sections and constructing the outer wall by first expanding outwards and then contracting inwards relative to the inner wall. The construction method for this petal-shaped double-layer wall is described below.

[0024] See Figure 6 The diagram shows a construction drawing of a petal-shaped double-layer wall according to the present invention. The following is in conjunction with... Figures 1 to 8 The structure of the construction method for the petal-shaped double-layer wall of the present invention will be described.

[0025] See Figure 1 This invention provides a construction method for a petal-shaped double-layer wall, comprising the following steps: dividing the double-layer wall to be constructed into multiple sections along the height direction from bottom to top, wherein the double-layer wall to be constructed includes an outer wall and an inner wall. The outer wall expands outward and then contracts inward relative to the inner wall in the vertical direction, and the top of the outer wall is connected to the top of the inner wall. Each section is constructed in the order of division. When constructing the corresponding section, corresponding steel bars and formwork are set up, and concrete is poured into the formwork to complete the construction of the corresponding section. For the section located at the top, the top section of the inner wall is constructed first, and then the top section of the outer wall is constructed. When constructing the top section of the outer wall, diagonal bracing is set up with the top of the already constructed inner wall to support the formwork at the top section of the outer wall. After the top section of the outer wall is constructed, the construction of the double-layer wall is completed.

[0026] Furthermore, during each construction segment, a passageway can be opened at the designed location between the outer wall and the inner wall, through which the temporary floor slab 12 and the temporary support 13 can be installed and dismantled.

[0027] In one specific embodiment of the present invention, when the first section is completed, a temporary floor slab 12 is constructed between the first section of the outer wall and the inner wall, and scaffolding for the construction of subsequent sections is erected on the temporary floor slab 12.

[0028] Furthermore, by setting a temporary floor slab 12 between the outer wall and the inner wall, a platform with supporting strength is provided between the inner and outer walls. Then, a temporary support 13 is set on the temporary floor slab 12 to support the inward side of the outer wall, so that the outer wall can be supported throughout the construction process until the construction is completed.

[0029] In one specific embodiment of the present invention, when constructing the section corresponding to the inward portion of the exterior wall, a connector is embedded on the outer side of the corresponding section of the exterior wall, and the embedded connector is used to connect the corresponding scaffolding.

[0030] Furthermore, by embedding connectors on the outside of the exterior wall and connecting corresponding scaffolding to the connectors, it becomes easier to construct the next section.

[0031] In one specific embodiment of the present invention, when a section of construction is completed, a corresponding stairwell is set at the corresponding position on the outside of the exterior wall.

[0032] Furthermore, by setting up corresponding stairwells on the outside of the exterior wall, the scaffolding can be adequately supported during the erection process.

[0033] In one specific embodiment of the present invention, when a section is completed, a tie rod 9 is embedded at a designed position on the side of the inner wall away from the outer wall, and the embedded tie rod 9 is used to connect the corresponding auxiliary frame 11.

[0034] Furthermore, by setting a tie rod 9 on one side of the inner wall to connect the auxiliary frame 11, the auxiliary frame 11 can be increased accordingly according to the height of the inner wall. Using multiple tie rods 9 improves the wall support performance between the auxiliary frame 11 and the inner wall formwork 24.

[0035] The construction method of the present invention will be described below with a specific construction example.

[0036] like Figures 1 to 7 As shown, the double-layer wall to be constructed is divided into four sections from bottom to top, namely the first section to the fourth section. The construction process of each section is described in detail below.

[0037] Section 1: A first external wall formwork 2 and an internal wall formwork 24 are erected on the floor. A first diagonal brace 4 is erected on the outside of the first external wall formwork 2. After the first external wall formwork 2 is erected, the first diagonal brace 4 supports it, thus supporting the inclined formwork 2 during concrete pouring and preventing it from tipping over. After the concrete solidifies, the first diagonal brace 4 can be connected to the first external wall formwork 2 by installing a tie rod 9 between them. The first scaffolding 1 is erected on opposite sides of the first stairwell 3, and the tie rod 9 is used to align the height of the first stairwell 3 with the height of the first external wall formwork 2. A temporary support 13 is provided between the first external wall formwork 2 and the internal wall formwork 24. A temporary floor slab 12 is connected to the top of the temporary support 13. The opposite ends of the temporary floor slab 12 are connected to the first external wall formwork 2 and the internal wall formwork 24, respectively. The temporary floor slab 12 between the two walls provides sufficient support, allowing the temporary support 13 to be installed between them to support the inwardly tilting external wall formwork. This temporary floor slab 12 is a beam-slab structure. For construction at a certain elevation, steel reinforcement heads need to be pre-reserved during external wall construction and welded firmly to the main reinforcement bars of the wall. The support frame is erected during floor slab construction after the outwardly tilting wall is poured and reaches its design strength, marking the completion of the first section of construction.

[0038] Second section: A second exterior wall formwork 21 is placed on the first exterior wall formwork 2, and multiple first diagonal braces 4 are connected to the outer wall surface of the second exterior wall formwork 21. The other end of the first diagonal braces 4 is supported on the first stairwell 3. The first diagonal braces 4 support the second exterior wall formwork 21 to achieve support. The second stairwell 31 is located above the first stairwell 3. Second scaffolding 14 is connected to the opposite sides of the second stairwell 31. The bottom of the second scaffolding 14 is supported on the first stairwell 3. The second scaffolding 14 supports the second stairwell 3. At the bottom of 1, the second scaffolding 14 supports the second stairwell 31. A new inner wall formwork 24 is erected on the original inner wall formwork 24 so that the inner wall formwork 24 is level with the second outer wall formwork 21. Then, multiple first embedded parts 8 are set on the temporary floor slab 12. The first embedded parts 8 can be connected to the temporary support 13. By setting the first embedded parts 8 on the temporary floor slab 12, a fixed support point is provided for the temporary support 13. Thus, after the temporary support 13 is erected, it can better support the outer wall formwork. The construction of the second section is completed.

[0039] The third section: The third outer wall formwork 22 is erected on the second outer wall formwork 21, and the third outer wall formwork 22 is tilted inward toward the inner wall formwork 24 to form an inward curve. By setting connectors on the outer wall surface of the third outer wall formwork 22, a fixed support point is provided for the third scaffold 15 on the outer wall formwork. When the elevation of the outer wall exceeds 1 meter, the wall tends to curve inward in the cross section. Conventional scaffolding cannot meet the protection requirements for the construction of the outer wall reinforcement and formwork. At this time, it is necessary to pre-embed ф steel bar heads at the corner of the outer wall. After the wall concrete reaches the design strength, steel pipes are inserted. Another inner wall is added on the top of the inner wall formwork 24 to reach a height exceeding that of the third outer wall formwork 22. The construction of the third section is completed.

[0040] Fourth section: The fourth external wall formwork 23 is placed on top of the third external wall formwork 22 and recessed into the inner wall formwork 24 until it is connected to the inner wall formwork 24. The fourth external wall formwork 23 is supported by the temporary bracket 13, and the second diagonal brace 7 is supported on the inner wall surface of the fourth external wall formwork 23. By connecting the second diagonal brace 7 to the inner wall surface of the fourth external wall formwork 23 and supporting the other end of the second diagonal brace 7 on the inner wall formwork 24, the fourth external wall formwork 23 is supported to prevent the fourth external wall formwork 23 from collapsing after connection.

[0041] Furthermore, a support platform 5 is set on the outer wall surface of the external wall formwork. The support platform 5 extends away from the external wall formwork to form a cantilever end. A disc-lock scaffold 6 is supported on the cantilever end. The disc-lock scaffold 6 is connected to the outer wall surface of the external wall formwork. A second embedded part 10 is provided at the connection between the disc-lock scaffold 6 and the outer wall surface of the formwork structure. A second diagonal brace 7 is supported on the disc-lock scaffold 6. The other end of the second diagonal brace 7 is supported on the support platform 5 as a support point for the next step of the scaffold. The second diagonal brace 7 is connected to the disc-lock scaffold 6 for reinforcement. By setting the second embedded part 10 between the disc-lock scaffold 6 and the external wall, the two are connected to ensure construction safety.

[0042] Furthermore, by setting multiple first diagonal braces 4 on the outside of the second exterior wall formwork 21, which are then supported on the first stairwell 3, the second exterior wall formwork 21 is provided with support. By setting two second scaffolds 14 on the first stairwell 3 and using tie rods 9 to fix the second stairwell 31 between the two second scaffolds 14, a third scaffold 15 is added to the second scaffolds 14 for connection. The first diagonal braces 4 are inclinedly supported on the second stairwell 31, and the other end of the first diagonal braces 4 supports the third scaffold 15, thereby providing support for the third scaffold 15.

[0043] Furthermore, by sequentially erecting the second and third scaffolding 15 on the first scaffolding 1, the scaffolding is always grounded during its erection. The exterior wall is a hyperboloid wall with a horizontal arc shape and a vertical shape that expands outward and then tapers inward. The interior wall is a single-curved wall with a horizontal arc shape and a vertical shape that is perpendicular. The inner and outer walls intersect to form a petal shape, and multiple sets of petal-shaped inner and outer walls are combined to form an ellipsoid. Due to the outward expansion and inward taper of the exterior wall structure, steel reinforcement needs to be pre-reserved according to the drawings of the next floor wall columns during construction, and then the wall is poured in sections. According to the BIM detailed model, the steel reinforcement of the exterior wall is numbered one by one, and the length, bending point position, bending angle, etc. of the steel reinforcement are accurately laid out and processed. Then, they are transported to the work surface one by one according to the numbered drawings for installation.

[0044] Furthermore, after construction, the bent sections of the exterior wall are reinforced with multiple diagonal braces. The wall formwork is constructed entirely of lightweight, easy-to-manufacture wooden planks. When setting up the formwork, workers must mark the positions of the next-floor wall columns and then fine-tune the pre-installed reinforcing bars within the wall according to these marks. Care must be taken to avoid repeated bending of the reinforcing bars during adjustment to prevent fatigue damage. During construction, a tower crane is used to hoist the reinforcing bars and other materials to the unloading platform. The reinforcing bars are then manually moved to the work surface using the external scaffolding. This addresses the issue of limited space due to the inward-curving structure of the exterior wall after it exceeds a certain height. Tie bolts are installed on the scaffolding to allow for adjustments based on the distance between adjacent scaffold sections. Each tie bolt position requires an additional steel pipe diagonal brace, with the angle between the brace and the ground not less than 45°. Reinforcing bar ends must be pre-installed during floor slab construction to secure the diagonal brace steel pipes, thus preventing special situations such as formwork bulging during concrete pouring.

[0045] Furthermore, due to the sloping shape of the wall on its facade, it is difficult for the vibrator to be inserted to the bottom of the wall during concrete pouring, and air bubbles generated during vibration are also difficult to escape from the top. In addition to pouring the concrete in sections, holes (10cm x 10cm) need to be made at intervals on the upper surface of the formwork to facilitate the insertion of the vibrator and the expulsion of air bubbles. When the concrete reaches the holes, a carpenter will seal the holes to prevent concrete overflow.

[0046] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A construction method for a petal-shaped double-layer wall, characterized in that: Includes the following steps: The double-layer wall to be constructed is divided into multiple sections along the height direction from bottom to top. The double-layer wall to be constructed includes an outer wall and an inner wall. The outer wall expands outward and then contracts inward relative to the inner wall in the vertical direction, and the top of the outer wall is connected to the top of the inner wall. The construction of each section is carried out in the order of division. When constructing the corresponding section, the corresponding steel bars and formwork are set up and concrete is poured in the formwork to complete the construction of the corresponding section. For the top section, construct the top section of the interior wall first, then construct the top section of the exterior wall. When constructing the top section of the exterior wall, diagonal bracing is installed at the top of the already constructed interior wall to support the formwork at the top section of the exterior wall. Once the top section of the exterior wall is completed, the construction of the double-layer wall is finished.

2. The construction method of a petal-shaped double-layer wall according to claim 1, characterized in that: When the first section is completed, a temporary floor slab is constructed between the first section of the exterior wall and the interior wall, and scaffolding for the construction of subsequent sections is erected on the temporary floor slab.

3. The construction method of a petal-shaped double-layer wall according to claim 1, characterized in that: When constructing the section corresponding to the inward-facing portion of the exterior wall, connectors are embedded on the outer side of the corresponding section of the exterior wall, and the corresponding scaffolding is connected using the embedded connectors.

4. The construction method of a petal-shaped double-layer wall according to claim 1, characterized in that: When a section of construction is completed, a corresponding stairwell is set up at the corresponding position on the outside of the exterior wall.

5. The construction method of a petal-shaped double-layer wall according to claim 1, characterized in that: When a section of construction is completed, tie rods are embedded at the designed position on the side of the inner wall away from the outer wall, and the corresponding auxiliary frame is connected by the embedded tie rods.

Images