Manufacturing method of building shell structure

Abstract

The invention belongs to the technical field of building structure construction, provides an inner film external spraying method for building a thin shell structure, particularly can be used for building various special-shaped thin shell structures, and has the characteristics of high adaptability, diversity and applicability and high economical efficiency. The structure stress is more reasonable, the adaptability is wider, and the diversity of building appearance forming is remarkably improved. And by adopting the overall one-time forming technology of the outline, the stress of the structure is more reasonable, the overall integrity and stability are firmer, and the appearance is excellent under various external forces, so that the application value and the use safety are further improved. Meanwhile, the technology subverts a traditional cast-in-place concrete pouring technology, layered and segmented operation construction is conducted through sprayed concrete, operation of constructors is reduced, risk factors are reduced, the construction efficiency is improved, and construction is safer and more reliable.

Description

Technical Field

[0001] The invention relates to the technical field of building structure construction, and in particular to a method for manufacturing a building shell structure. Background Art

[0002] Shell structure is a thin-walled structure with curved surface. It is divided into cylindrical shell, dome thin shell, hyperbolic flat shell and hyperbolic parabolic shell according to the form of curved surface. The advantage of thin shell structure is that it can evenly distribute the pressure to various parts of the object. The internal space of the shell has no beams or columns and can be arbitrarily divided into different functional units, which can fully improve its use efficiency. "Special-shaped" thin shell structure has the characteristics of beautiful appearance and various types. It is often used in landscape, public relations facilities and other applications with good results. Most of the materials are steel bars and concrete.

[0003] However, thin-walled structural components have many irregular shapes, uneven load support at each point, and a complex structural support system, making it difficult to build large-diameter and irregular thin-walled structural components. In addition, the template production is labor-intensive, time-consuming, and material-intensive, with low material utilization and non-reusable. 60% of the cost is spent on construction costs, which affects the application of thin-walled structural components. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a method for manufacturing a building shell structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for manufacturing a building shell structure, comprising the following steps:

[0006] Step 1: Conduct geological survey of the construction area, and then handle the foundation and site leveling;

[0007] Step 2: Construct the annular base or ring wall according to the design drawings, fix the inflatable membrane on it, make it firmly and tightly connected with the concrete base, seal all air leakage points of the building, and prevent air leakage;

[0008] Step 3: The outline is formed by an inflatable membrane. The membrane materials are cut and spliced ​​together according to the shape, and the required outline of the building is presented by inflating;

[0009] Step 4: Assemble the construction platform outside the building to provide an operating platform for subsequent concrete spraying and detailed structural construction;

[0010] Step 5: Spray an isolation layer on the outside of the air membrane, then tie the structural layer steel bars on the isolation layer, and then spray the concrete in layers and sections evenly on the structural layer steel bars until all the steel bars are covered;

[0011] Step 6: Tie the structural steel bars on the structural concrete layer, and then spray the structural concrete;

[0012] Step 7: Spray the surface covering material on the structural concrete layer. After the surface covering is dry, lay the waterproof layer and carry out the construction of detailed structure;

[0013] Step 8: Spray fiber plaster inside the structure, followed by acceptance of the removal of the construction platform and external protection measures.

[0014] As a preferred technical solution of the present invention, the thin shell structure comprises, from inside to outside, an inorganic decorative layer, a soft fabric membrane material, structural steel bars, structural concrete, structural steel bars, structural concrete, an external waterproof layer, and a decorative layer.

[0015] As a preferred technical solution of the present invention, the membrane material in step 3 can be dismantled and recycled, and an air membrane is inflated to support the construction load. The internal air pressure is 700-1200pa, and can support a surface load of 70-120kg / m2.

[0016] As a preferred technical solution of the present invention, in step 4, a "U"-shaped protective pad is arranged under the intersection of the warp and weft steel bars of the detailed structure.

[0017] Compared with the prior art, the present invention provides a method for manufacturing a building shell structure, which has the following beneficial effects:

[0018] This invention has a more reasonable structure, significantly improved the construction quality of the building, greatly reduced the construction cost, and injected new vitality into the development of thin-shell structures. By adopting the overall one-time molding technology, the integrity and stability of the overall structure are more complete, and it can perform well when subjected to various external forces, which further enhances its application value and safety of use. At the same time, this technology subverts the traditional concrete pouring process, adopts the sprayed concrete process, does not add additives such as accelerators, has a unique sprayed concrete construction process and a concrete strength greater than C30, meets the needs of structural layer construction, and has strong economy, operability, and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the annular base structure of the present invention;

[0020] Figure 2 For the present invention Figure 7 A structural diagram;

[0021] Figure 3 For the present invention Figure 7 Schematic diagram of the structure at B;

[0022] Figure 4 This is a schematic diagram of the structure at the intersection of the warp and weft steel bars of the present invention;

[0023] Figure 5 For the present invention Figure 7 Schematic diagram of the structure at C;

[0024] Figure 6 It is a top view of the structure of the present invention;

[0025] Figure 7 It is the front view of the structure of the present invention.

[0026] In the figure: 1. Special-shaped thin shell body; 2. Transparent film window; 3. Ring base; 4. Ring wall. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0028] Example

[0029] See also Figure 1-7 The present invention provides the following technical solution: A method for manufacturing a building shell structure, comprising the following steps:

[0030] Step 1: Conduct geological survey of the construction area, and then handle the foundation and site leveling;

[0031] Step 2: Construct the annular base or ring wall according to the design drawings, fix the inflatable membrane on it, make it firmly and tightly connected with the concrete base, seal all air leakage points of the building, and prevent air leakage;

[0032] Step 3: The outline is formed by an inflatable membrane. The membrane materials are cut and spliced ​​together according to the shape, and the required outline of the building is presented by inflating;

[0033] Step 4: Assemble the construction platform outside the building to provide an operating platform for subsequent concrete spraying and detailed structural construction;

[0034] Step 5: Spray an isolation layer on the outside of the air membrane, then tie the structural layer steel bars on the isolation layer, and then spray the concrete in layers and sections evenly on the structural layer steel bars until all the steel bars are covered;

[0035] Step 6: Tie the structural steel bars on the structural concrete layer, and then spray the structural concrete;

[0036] Step 7: Spray the surface covering material on the structural concrete layer. After the surface covering is dry, lay the waterproof layer and carry out the construction of detailed structure;

[0037] Step 8: Spray fiber plaster inside the structure, followed by acceptance of the removal of the construction platform and external protection measures.

[0038] By adopting the method of inner membrane and outer spraying, the structural force is more reasonable and the adaptability is wider, which significantly improves the diversity of building appearance, enriches the application scenarios of special-shaped structure construction, greatly improves the construction quality and safety of special-shaped structures, greatly reduces construction costs, and injects new vitality into the development of special-shaped thin-shell structures.

[0039] In this implementation plan, the construction method is expanded in detail:

[0040] Site leveling:

[0041] First, the construction area is thoroughly cleaned and all obstacles, including trees, building debris, stones, etc., are removed.

[0042] Use bulldozers, graders and other equipment to level the site, ensuring that there are no obvious ups and downs on the ground, providing a stable foundation for foundation treatment.

[0043] According to the design drawings, mark the location outline of the ring base or ring wall.

[0044] Foundation treatment:

[0045] Conduct geological survey on the leveled site to understand the bearing capacity of the foundation, groundwater level, etc.

[0046] According to the geological report, take corresponding foundation reinforcement measures, such as grouting reinforcement, pile foundation treatment, etc.

[0047] Make sure the foundation is stable.

[0048] Lay a waterproof layer to prevent groundwater from eroding the structure.

[0049] Ring base or ring wall construction:

[0050] According to the design drawings, carry out steel bar binding, formwork installation and concrete pouring of the ring base or ring wall.

[0051] The base or ring wall should have high strength and stability to support the subsequent air membrane structure and concrete spraying operations.

[0052] A connection point is reserved on the base or the top of the ring wall for fixed connection with the inflatable membrane.

[0053] Thin shell structure molding:

[0054] The cut membrane materials are spliced ​​according to the designed shape to form a complete air membrane structure.

[0055] Use special connectors and sealing materials to ensure tight and leak-free connections between membrane materials.

[0056] Connect the air film structure to the base or ring wall (see Figure 1 ) and conduct inflation test to ensure that the air membrane structure is stable and undamaged.

[0057] External construction platform assembly:

[0058] A construction platform is built outside the air membrane structure to provide operating space for subsequent concrete spraying and detailed structure construction.

[0059] Isolation layer construction:

[0060] Spray or lay an isolation layer inside the air membrane structure to prevent contamination or damage to the membrane material during concrete spraying.

[0061] Structural layer reinforcement binding:

[0062] Tie up the structural layer reinforcements on the isolation layer according to the design drawings, ensuring that the position, spacing and quantity of the reinforcements meet the design requirements.

[0063] Structural concrete spraying:

[0064] Use shotcrete equipment to evenly spray concrete onto the structural layer steel bars to form a structural concrete layer of a certain thickness.

[0065] Structural layer reinforcement binding:

[0066] The structural layer steel bars are tied on the structural concrete layer according to the design drawings to provide support for the subsequent concrete spraying.

[0067] Structural layer concrete spraying:

[0068] Use the same shotcrete equipment to evenly spray concrete onto the structural layer steel bars to form a structural concrete layer.

[0069] Surface coating construction:

[0070] Apply or spray surface coating material onto structural concrete layers to improve the durability and aesthetics of the structure.

[0071] Waterproof layer construction:

[0072] After the surface cover is dry, a waterproof layer is laid to prevent external water sources such as rainwater and groundwater from eroding the structure.

[0073] Detailed construction:

[0074] According to the design drawings, carry out the construction of detailed structures such as doors, windows, vents, and gutters.

[0075] Internal spray fiber wool or fiber plaster construction:

[0076] Spray fiber wool or fiber gypsum inside the structure to improve the thermal insulation and sound insulation performance of the structure.

[0077] Dismantling and acceptance:

[0078] After all construction is completed, the construction platform and peripheral protection measures will be removed.

[0079] Conduct a comprehensive inspection of the structure to ensure that all performance requirements meet the design requirements.

[0080] Organize relevant units to conduct acceptance to ensure the safety and functionality of the structure.

[0081] Specifically, the thin shell structure is composed of inorganic decorative layer, soft fabric membrane material, structural steel bar, structural concrete, structural steel bar, structural concrete, external waterproof layer, decorative layer (see Figure 3 ), the membrane material in step 3 can be removed and reused, the air membrane is inflated to support the construction load, the internal air pressure is 700-1200pa, and the surface load can be supported by 70-120kg / m2. The template can be removed and reused, which greatly reduces the construction cost. In step 4, a "U"-shaped protective pad is set under the intersection of the warp and weft steel bars of the detailed structure (see Figure 4 ), which can effectively prevent the steel bars from scratching the membrane material and causing the air pressure to drop. The top of the structure adopts the "transparent membrane window" design (see Figure 5 ), this innovative design can effectively connect to the external environment, increase the indoor light intensity, timely adjust and reduce the ambient temperature inside the building, and save energy and protect the environment. The structure is constructed using the sprayed concrete process, without adding accelerators and other admixtures. It has a unique sprayed concrete construction process and a concrete strength greater than C30, which meets the needs of structural layer construction and has strong economy, operability and practicality. The inner surface uses sprayed fiber cotton or fiber gypsum, and the surface forms a better uneven surface, which can better reflect sound and reduce the diffraction of sound and light.

[0082] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a building shell structure, characterized in that The following steps are involved: Step 1: Conduct geological survey of the construction area, and then handle the foundation and site leveling; Step 2: Construct the annular base or ring wall according to the design drawings, fix the inflatable membrane on it, make it firmly and tightly connected with the concrete base, seal all air leakage points of the building, and prevent air leakage; Step 3: The outline is formed by an inflatable membrane. The membrane materials are cut and spliced ​​together according to the shape, and the required outline of the building is presented by inflating; Step 4: Assemble the construction platform outside the building to provide an operating platform for subsequent concrete spraying and detailed structural construction; Step 5: Spray an isolation layer on the outside of the air membrane, then tie the structural layer steel bars on the isolation layer, and then spray the concrete in layers and sections evenly on the structural layer steel bars until all the steel bars are covered; Step 6: Tie the structural steel bars on the structural concrete layer, and then spray the structural concrete; Step 7: Spray the surface covering material on the structural concrete layer. After the surface covering is dry, lay the waterproof layer and carry out the construction of detailed structure; Step 8: Spray fiber plaster inside the structure, followed by acceptance of the removal of the construction platform and external protection measures.

2. The method for manufacturing a building shell structure according to claim 1, characterized in that: The thin shell structure comprises, from the inside to the outside, an inorganic decorative layer, a soft fabric membrane material, structural steel bars, structural concrete, structural steel bars, structural concrete, an external waterproof layer, and a decorative layer.

3. The method for constructing a special-shaped thin shell structure by inner membrane outer spraying method according to claim 2 is characterized in that: The membrane material in step 3 can be dismantled and recycled, and the air membrane is inflated to support the construction load. The internal air pressure is 700-1200pa, and can support a surface load of 70-120kg / m2.

4. The method for constructing a special-shaped thin shell structure by inner membrane outer spraying method according to claim 3 is characterized in that: In step 4, a "U"-shaped protective pad is set under the intersection of the warp and weft reinforcements of the detailed structure.

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