Arc-shaped curtain wall design method based on environmental ecological adaptability

Abstract

The invention discloses an arc-shaped curtain wall design method based on environmental ecological adaptability, which comprises the following steps: unfolding an external vertical surface of a target building to a plane UV coordinate system to generate a two-dimensional unfolded surface; the unfolded surface is sequentially divided into a lower aluminum plate layer, a middle glass layer and an upper aluminum plate layer from bottom to top in the vertical direction; curve streamline characteristics of the path are extracted from the ecological landscape path around the building, the extracted streamline is mapped to the expansion surface, and streamline fitting is carried out at the junction of the glass layer and the upper and lower aluminum plate layers; and restoring the expanded surface subjected to streamline fitting to a three-dimensional building surface through UV inverse mapping to form an arc-shaped curtain wall model consistent with the original structure. According to the method, the matching degree of the building and the environment ecology can be improved, and multi-objective optimization of the ecological performance and the structure function is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of architectural design, and particularly relates to an arc-shaped curtain wall design method based on environmental ecological adaptability. BACKGROUND

[0002] With the development of urban building forms to complex and diversified, arc-shaped facade buildings are widely used in public buildings, cultural places and landmark facilities due to their flowing feeling and modeling performance. In order to realize the unity of building appearance and structural function, the curtain wall system as an important part of the building skin plays a key role in appearance modeling, structural safety, lighting and ventilation, etc.

[0003] At present, the traditional arc-shaped curtain wall design mostly adopts a standardized module splicing method, which divides and splices the preset geometric units (such as triangle, rectangle, diamond, etc.) on the overall building curved surface, ignoring the relevance with the surrounding ecological environment (such as terrain trend, path streamline, vegetation distribution, etc.), resulting in that the curtain wall modeling is difficult to form a fusion with the natural environment in vision, and the visual and functional coordination is insufficient. Moreover, the arc-shaped facade expansion and fitting precision is low, resulting in material waste or modeling deviation. Although the parametric modeling tools such as Rhino, Grasshopper, etc. have been widely used in geometric modeling and form generation of building curtain wall, such tools have not realized the system extraction and form translation mechanism of ecological environment characteristics (such as landscape path streamline) in the existing application, that is, there is a lack of a method system that can unify and coordinate the "ecological streamline-structure combination-geometric mapping".

[0004] Therefore, in order to solve the above problems, an arc-shaped curtain wall design method based on environmental ecological adaptability is needed, which can improve the matching degree of building and environment ecology, and realize the multi-objective optimization of ecological performance and structural function. SUMMARY

[0005] Therefore, the purpose of the present application is to overcome the defects in the prior art, and to provide an arc-shaped curtain wall design method based on environmental ecological adaptability, which can improve the matching degree of building and environment ecology, and realize the multi-objective optimization of ecological performance and structural function.

[0006] The arc-shaped curtain wall design method based on environmental ecological adaptability of the present application comprises:

[0007] The facade of the target building is unfolded to a planar UV coordinate system to generate a two-dimensional unfolded surface;

[0008] The unfolded surface is divided into a lower aluminum plate layer, a middle glass layer and an upper aluminum plate layer in a vertical direction from bottom to top;

[0009] The curve streamline features of the path are extracted from the ecological landscape path around the building, the extracted streamline is mapped to the development surface, and the streamline fitting is carried out at the junction of the glass layer and the upper and lower aluminum plate layers;

[0010] The development surface after streamline fitting is restored to the three-dimensional building surface through UV inverse mapping, forming an arc-shaped curtain wall modeling consistent with the original structure.

[0011] Further, the facade of the target building is developed to a plane UV coordinate system to generate a two-dimensional development surface, specifically including:

[0012] The original building cylindrical surface is set as a UV surface with continuous parameterization by using Rhino modeling software, and the UV surface is converted into a two-dimensional plane development surface; wherein the development surface retains the geometric correspondence relationship of the original curved surface and the building structure.

[0013] Further, the lower aluminum plate layer is set to a height of l1 for structural reinforcement and shading; the middle glass layer is set to a height of l2 for providing natural lighting and landscape view; and the upper aluminum plate layer is set to a height of l1 for shading and building form finishing; wherein the three-layer structure is distinguished in the form of curtain wall junction line, and l1 is less than l2.

[0014] Further, the glass material transmittance of the middle glass layer is 70%.

[0015] Further, the curve streamline features include curve curvature and curve direction.

[0016] Further, the streamline fitting adopts a curvature continuous method to ensure smooth transition between curtain walls and form a curtain wall interface modeling with ecological echo features.

[0017] Further, it also includes dynamically adjusting the division scale of the curtain wall according to the curvature radius corresponding to different height sections of the building, to ensure the surface fit degree and construction feasibility of the arc-shaped curtain wall modeling.

[0018] Further, the dynamic adjustment of the division scale of the curtain wall specifically includes:

[0019] Smaller curtain wall unit division is adopted in the area with larger curvature;

[0020] Larger curtain wall unit division is adopted in the area with smaller curvature.

[0021] The beneficial effects of the present application are: the arc-shaped curtain wall design method based on environmental ecological adaptability disclosed in the present application integrates the dynamic modeling of the ecological landscape path into the building facade through UV development, streamline fitting and unit division, solves the problems of poor environmental coordination and low construction precision, improves the ecological matching degree of the building and the environment, and realizes the multi-objective optimization of ecological performance and structural function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 Schematic diagram of the process of the curved curtain wall design method of the present invention;

[0024] Figure 2 Schematic diagram of the UV unfolding of the building facade of the present invention into a plane;

[0025] Figure 3 Draw a streamline diagram on the plane of the facade of the present invention;

[0026] Figure 4 The streamlines on the plane of the present invention are mapped to the schematic diagram of the building facade;

[0027] Figure 5 This is a schematic diagram of the smooth curved shape of a school library of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to the accompanying drawings, as shown in the drawings:

[0029] This embodiment discloses a curved curtain wall design method based on environmental ecological adaptability, comprising the following steps:

[0030] S1. Expand the facade of the target building into a planar UV coordinate system to generate a two-dimensional expanded surface;

[0031] S2. The expanded surface is divided vertically from bottom to top into a lower aluminum layer, a middle glass layer, and an upper aluminum layer, balancing structural strength and lighting requirements.

[0032] S3. Extract the curvilinear streamline features of the path from the ecological landscape path surrounding the building, map the extracted streamlines onto the unfolded surface, and perform streamline fitting at the junction of the glass layer and the upper and lower aluminum panels;

[0033] S4. The unfolded surface after streamline fitting is restored to the three-dimensional building surface through UV inverse mapping, forming a curved curtain wall shape consistent with the original structure.

[0034] The application realizes the dynamic fusion of the building facade and the surrounding environment by introducing the streamline feature of the ecological landscape path, and improves the ecological adaptability and visual coordination of the curtain wall modeling. Through UV unfolding and inverse mapping, the complex curved surface modeling process is simplified, the fitting accuracy is ensured, and the construction feasibility and material utilization rate are improved. Among them, the layered structure design combines with the functional requirements, the aluminum plate layer enhances the structural stability, and the glass layer provides natural lighting and ventilation, effectively realizing the coordination and unity of structure and ecological performance, and being suitable for high-quality design and implementation of multi-curvature building facade curtain wall system.

[0035] In this embodiment, in step S1, the facade of the target building is unfolded to a planar UV coordinate system to generate a two-dimensional unfolded surface, specifically including:

[0036] The Rhino modeling software is used to set the original building cylindrical surface as a UV surface with continuous parameterization, convert the UV surface into a two-dimensional unfolded surface, and use it as a reference for curtain wall design. The unfolded surface retains the geometric correspondence relationship with the original curved surface and the building structure. As shown in Figure 2 The circular shape is the cylindrical facade of the building, and the white long strip is the UV unfolded plane.

[0037] By setting the building surface as a UV surface with continuous parameterization and converting it into a two-dimensional unfolded surface, not only the geometric correspondence relationship with the original curved surface of the building is retained, but also a unified and controllable coordinate system is provided for subsequent curtain wall layered design and streamline fitting. Compared with the traditional manual fitting method, the UV unfolding method has higher geometric accuracy and parameter consistency, which is beneficial to realize the close fit between the curtain wall unit and the building structure, and reduce the modeling deviation and construction error in the later stage.

[0038] In this embodiment, in step S2, the lower aluminum plate layer is set to a height of 3m for structural reinforcement and shading; the middle glass layer is set to a height of 6m for providing natural lighting and landscape view; and the upper aluminum plate layer is set to a height of 3m for shading and building form finishing; wherein the three layers are distinguished in the form of curtain wall junction line.

[0039] By vertically layering the curtain wall structure and clearly dividing it into a lower aluminum plate layer, a middle glass layer and an upper aluminum plate layer, not only the functional layout of the building facade is optimized, but also the coordination and unity of structural performance and ecological performance are realized. The lower aluminum plate layer provides structural support and basic shading to enhance the overall stability of the curtain wall; the middle glass layer introduces natural light and open view to improve indoor comfort and energy utilization efficiency; and the upper aluminum plate layer effectively controls solar radiation while forming a complete visual finish of the building. The layers are clearly defined by the curtain wall junction line, facilitating zoned construction and form control, and improving the implementability and functional complexity of the curtain wall system.

[0040] In this embodiment, the glass material of the middle glass layer has a light transmittance of 70%. Using a glass material with a light transmittance of 70% as the middle glass layer not only effectively introduces natural lighting, improves indoor brightness and comfort, but also controls the intensity of solar radiation, avoids excessive glare and heat accumulation, achieves good light-heat balance, and enhances the ecological and energy-saving performance of the curtain wall.

[0041] In this embodiment, in step S3, the curve streamline features are extracted from the ecological landscape paths around the building, such as waterfront paths and forest trails. The curvature and trend of S-shaped or multi-segment Bezier curves can be used as design references. The curve streamline features include curve curvature and curve trend. The fitting process uses a curvature continuity (G2 continuity) method to ensure smooth transitions between curtain wall units and form a curtain wall interface modeling with ecological echo features, such as wave-like, ripple-like or polyline transitions. As shown in Figure 3 the extracted streamlines are mapped to the unfolded surface.

[0042] By extracting the curve streamline features of the ecological landscape paths around the building (such as the curvature and trend of waterfront paths and forest trails), the natural form is converted into an architectural skin design input, effectively enhancing the fusion of the curtain wall modeling and the environment. Using S-shaped or multi-segment Bezier curves as a reference can reflect the natural rhythm and flow characteristics of the ecological path. Through the G2 continuous curvature fitting method, smooth transitions of curtain wall units at the layer boundaries are ensured, avoiding abrupt changes in form and improving the geometric aesthetics and manufacturing feasibility of the curtain wall. The final wave-like, ripple-like and other forms make the building have ecological echo features, improving the overall landscape coordination and design recognition.

[0043] In this embodiment, in step S4, the unfolded surface after streamline fitting is restored to the three-dimensional cylindrical building surface through UV inverse mapping. This restoration operation preserves the original curvature changes and hierarchical structure and continuously maps the ecological streamlines in three-dimensional space to generate a special-shaped curtain wall system that conforms to the building volume characteristics. Precise mapping can be achieved through "Flow Along Surface" or "MapSurface" commands, or CSharp nodes in Grasshopper can be used to write conversion code to map streamlines on a plane to the building facade, as shown in Figure 4 the green lines in the white strip are mapped to the red lines in the circle.

[0044] In this embodiment, the application further comprises a step S5 of dynamically adjusting the division scale of the curtain wall according to the radii of curvature corresponding to different height sections of the building, to ensure the surface fitting degree and construction feasibility of the curved curtain wall. The dynamic adjustment of the division scale of the curtain wall specifically comprises: a smaller curtain wall unit division (such as 0.3m*0.8m) is adopted in a region with a larger curvature (such as the top, with a radius of 3m); and a larger curtain wall unit division (such as 0.5m*1m) is adopted in a region with a smaller curvature (such as the bottom, with a radius of 5m).

[0045] By dynamically adjusting the division scale of the curtain wall unit according to the radii of curvature corresponding to different height sections of the building, the geometric adaptability and construction precision of the curved curtain wall are significantly improved. When the curvature of the building facade is larger (the radius is smaller), the size of the curtain wall unit is automatically refined, effectively reducing the problems of panel warping and uneven joints; and in a region with a slower curvature, a larger unit is adopted to reduce the number of components, consumption and construction complexity. The adaptive division strategy takes into account the structural continuity and construction consumption, while ensuring the high surface fitting degree, the installation efficiency and the finished product quality of the entire curtain wall system are improved.

[0046] The application converts the landscape path modeling into the curtain wall interface form, enhances the dynamic correlation between the building and the environment, and realizes the fusion of ecological streamline; the unit density is adaptively adjusted based on the radius of the arc, the surface fitting precision is improved, and dynamic unit division is realized; the aluminum plate and the glass are combined, and the balance between structural stability and ecological performance (lighting, ventilation) is realized.

[0047] The curved curtain wall design method of the application is applied to the design of a special-shaped multi-curve multi-curvature combined curtain wall of a school library, and the steps are as follows:

[0048] 1. UV unfolding: the building facade is unfolded into a plane in Rhino, and key control points are marked;

[0049] 2. Layered design: the bottom 3m is an aluminum plate base, the middle 6m is a glass layer (light transmittance 70%), and the top 3m is an aluminum plate sunshade layer;

[0050] 3. Streamline fitting: the S-shaped curve of the riverside landscape path is extracted, a wave-shaped transition zone is generated at the junction of the aluminum plate and the glass layer, and the curvature is matched with the path direction;

[0051] 4. UV mapping: the unfolded surface with streamlines is mapped back to the cylinder to generate a wave-shaped curved curtain wall;

[0052] 5. Unit division: the unit size at the bottom (radius 5m) is 0.5m*1m, and the unit size at the top (radius 3m) is 0.3m*0.8m.

[0053] For example, Figure 5As shown, finally got the school library curve shape smooth schematic. Among them, the curtain wall and the landscape visual coherence, glass layer lighting efficiency is improved by 20%, the error rate of aluminum plate unit is less than 2%.

[0054] Finally, it should be pointed out that the above examples are intended to illustrate the technical solutions of the present application rather than limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A curved curtain wall design method based on environmental ecological adaptability, characterized by: include: Expand the facade of the target building into the plane UV coordinate system to generate a two-dimensional expanded surface; On the expanded surface, it is divided vertically from bottom to top into a lower aluminum plate layer, a middle glass layer, and an upper aluminum plate layer; Extract the curve streamline features of the path from the ecological landscape path around the building, map the extracted streamlines to the unfolded surface, and perform streamline fitting at the junction of the glass layer and the upper and lower aluminum plate layers; The unfolded surface after streamline fitting is restored to the three-dimensional building surface through UV inverse mapping, forming a curved curtain wall shape consistent with the original structure.

2. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 1 is characterized by: Expand the facade of the target building to the planar UV coordinate system to generate a two-dimensional expanded surface, including: Using Rhino modeling software, the cylindrical outer surface of the original building is set as a continuously parameterized UV surface, and the UV surface is converted into a two-dimensional planar unfolded surface; the unfolded surface retains the geometric correspondence between the original surface and the building structure.

3. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 1 is characterized by: The height of the lower aluminum plate layer is set to l1, which is used for structural reinforcement and shielding; the height of the middle glass layer is set to l2, which is used to provide natural lighting and landscape views; the height of the upper aluminum plate layer is set to l1, which is used for shading and finishing the architectural form; among them, the three-layer structure is distinguished by the curtain wall boundary line, and l1 is less than l2.

4. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 3 is characterized by: The light transmittance of the glass material of the middle glass layer is 70%.

5. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 1 is characterized by: The curve streamline characteristics include curve curvature and curve direction.

6. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 1 is characterized by: The streamline fitting adopts a curvature continuity method to ensure a smooth transition between curtain walls, forming a curtain wall interface shape with ecological echo characteristics.

7. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 1 is characterized by: Also includes: According to the curvature radius corresponding to different height sections of the building, the division scale of the curtain wall is dynamically adjusted to ensure the surface fit and construction feasibility of the curved curtain wall shape.

8. The method for designing a curved curtain wall based on environmental ecological adaptability according to claim 7 is characterized in that: Dynamically adjust the division scale of the curtain wall, including: Use smaller curtain wall units in areas with greater curvature; Larger curtain wall units are used in areas with smaller curvature.

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