A bim-based parametric design method for rotating curtain wall

Abstract

The application provides a BIM-based parameterized design method for a rotating curtain wall, relates to the technical field of curtain wall design, can reasonably control the outer contour of the rotating curtain wall, fully combines the glass curtain wall with the aluminum plate curtain wall, adjusts according to the required angle, and then simulates the outdoor environment through software to reach the required light collection rate. In the field construction, the construction nodes are determined through the model, the process is optimized at the joint, and the field construction is efficiently assisted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of curtain wall design, and particularly relates to a parameterized design method of a rotating curtain wall based on BIM. BACKGROUND

[0002] The curtain wall is the outer wall of the building, does not bear the weight, and is hung like a curtain, so it is also called "curtain wall", and is a light wall with decorative effect commonly used in modern large and high-rise buildings. In the existing design, in order to make the building become a landmark building in the local, for example, in the design of the stadium, library and other buildings, the design of the shape is often new and different. Especially the curtain wall arranged on the outer side of the building adopts the design of multiple curves and curved surfaces, which greatly increases the difficulty of manufacturing and construction.

[0003] The outer facade of the present project adopts rotating aluminum plate and glass curtain wall, each aluminum plate curtain wall has different size, and the outer facade is very complex, so the curtain wall cannot be constructed according to the traditional process. The project system integration researches a parameterized design method of a rotating curtain wall based on BIM, accurately positions the curved surface building curtain wall, and solves the engineering difficulties of complex curved surface modeling and high operation difficulty. SUMMARY

[0004] To solve the above problems, the present application discloses a parameterized design method of a rotating curtain wall based on BIM, comprising the following steps:

[0005] S1, designing the contour of the curtain wall:

[0006] S11, setting the inclination angle a of the whole curtain wall;

[0007] S12, forming a regular smooth reference curve in AutoCAD through the "curve" command, then importing the rhino to generate the building shape control boundary curve through the "reconstruction curve" command, and then generating the building shape reference surface through the rhino "curve lofting" command;

[0008] S13, importing the building boundary control curve into AutoCAD, then equally dividing the curve through the "curve equal division" command, and taking the equally divided curve as the curtain wall unit;

[0009] S2, curtain wall unit design: the left and right sides of the curtain wall unit are respectively aluminum plate area and glass area, and the proportion of the aluminum plate area and the glass area is controlled according to the position of the curtain wall unit;

[0010] S3, modeling and rendering:

[0011] S31, the rhinoceros is arranged in sequence by "copy" command and "move" command to form the vertical curtain wall unit component group, then the reference surface is created by "rectangular surface" command, and the curtain wall unit group is flowed to the building shape target surface created before by "surface flow" command, to form the building shape with curtain wall unit, and the modeling is completed;

[0012] S32, the building plane is deepened combined with the model skin profile, and other areas of the building body are modeled, such as the modeling of the entrance, canopy, roof fifth vertical surface and other parts, to form the final building shape;

[0013] S33, the final building shape is rendered.

[0014] Preferably, the inclination angle α is 10°.

[0015] Preferably, the curve in S13 is divided into 92 segments.

[0016] Preferably, the height x width x thickness of the curtain wall unit is 26.1 x 3 x 0.35 m.

[0017] Preferably, the curtain wall unit is divided into four types, and the width ratio of the aluminum plate area and the glass area is as follows: curtain wall unit one, 900:2100 mm; curtain wall unit two, 1300:1700 mm; curtain wall unit three, 1700:1300 mm; curtain wall unit four, 2100:900 mm, which ensures that the building vertical shape has a gradual change effect in modeling while reducing the number of non-standard curtain wall units.

[0018] Preferably, the overall view of the curtain wall is a ring profile, and A and B are marked on both sides, there are four intervals between A and B, and curtain wall unit four, curtain wall unit three, curtain wall unit two and curtain wall unit one are arranged in each interval. The gradual change form of the curtain wall vertical unit is designed in combination with the internal function design, and the design logic is that the aluminum plate area of the curtain wall unit near the backstage part is larger, the glass area is smaller, the glass area of the vertical curtain wall near the entrance part is largest, and the aluminum plate area is smallest, so the curtain wall unit is designed and arranged as above.

[0019] The beneficial effects of the present application are as follows: it is a new construction method combining design and construction, which adjusts the aluminum plate modeling reasonably, optimizes the site node construction, reduces the production of sample plates, effectively reduces the waste of materials, and solves the problems of inaccurate installation and positioning, uneven surface, light reflection and other problems in traditional process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the design flowchart of the present application.

[0021] Figure 2 A schematic view of a bottom structure of the curtain wall of the present application;

[0022] Figure 3 A schematic view of generating a control boundary curve of the building shape of the present application;

[0023] Figure 4 A schematic view of generating a reference surface of the building shape of the present application;

[0024] Figure 5 A top view of the overall profile of the building of the present application;

[0025] Figure 6 A top view of the partial profile of the building of the present application;

[0026] Figure 7 A schematic view of the expansion of the curtain wall unit in the facade of the present application;

[0027] Figure 8 A schematic view of the horizontal section of the curtain wall unit of the present application;

[0028] Figure 9 A building model view of the present application;

[0029] Figure 10 A rendering view of the building of the present application.

[0030] List of reference signs:

[0031] 1, curtain wall unit one; 2, curtain wall unit two; 3, curtain wall unit three; 4, curtain wall unit four; I, overall curtain wall; I-1, aluminum plate area; I-2, glass area. DETAILED DESCRIPTION

[0032] The present application will be further illustrated below in conjunction with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present application and not to limit the scope of the present application. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0033] A BIM-based parametric design method for a rotating curtain wall, as shown in Figure 1 , includes the following steps:

[0034] S1, design the profile of the curtain wall:

[0035] S11, as shown in Figure 2 , set the inclination angle a of the overall curtain wall I;

[0036] S12, form a regular smooth reference curve in AutoCAD by "curve" command, then import it into Rhino to generate the building shape control boundary curve by "rebuild curve" command, as shown in Figure 3 , and then generate the building shape reference surface by Rhino "curve lofting" command, as shown in Figure 4 .

[0037] S13, import the building boundary control curve into AutoCAD, then divide the curve equally by "curve equal division" command, as shown in Figure 5 and Figure 6 , and use the divided curve as the curtain wall unit, that is, install a curtain wall unit for each divided curve;

[0038] S2, curtain wall unit design: the left and right sides of the curtain wall unit are aluminum plate area I-1 and glass area I-2, as shown in Figure 8 , and the curtain wall unit is bent to meet the modeling of the curved surface of the building. The proportion of aluminum plate area I-1 and glass area I-2 can be adjusted according to the position of the curtain wall unit, but the type of curtain wall unit should not be too much, otherwise it will increase the difficulty of production.

[0039] S3, modeling and rendering:

[0040] S31, use "copy" and "move" commands in Rhino to arrange a number of curtain wall units in sequence to form a vertical curtain wall unit component group, then use "rectangular surface" command to create a reference surface, and then use "surface flow" command to flow the curtain wall unit group to the previously created building shape target surface to form a building shape with curtain wall units, complete the modeling, that is, realize the whole curtain wall I modeling;

[0041] S32, deepen the building plane combined with the model skin profile, and model other areas of the building, such as the modeling of the entrance, canopy, roof, and fifth facade, etc. to design the details of the building, form the final building shape, as shown in Figure 9 .

[0042] S33, render the final building shape, as shown in Figure 10 . In this modeling method, the wave reflection is uniform, making the building natural.

[0043] The inclination angle α is 10°, and the inclination angle set here is 10°, which can be reselected according to the material strength, building shape, etc. in other types of buildings.

[0044] The curve in S13 is equally divided into 92 segments, that is, the whole curtain wall I is divided into 92 curtain wall units.

[0045] The height x width x thickness of the curtain wall unit is 26.1 x 3 x 0.35 m, that is, the size of the curtain wall unit.

[0046] The construction scale of the standard unit is formed by the division of the curve, forming the curtain wall unit and the window size which is easy to construct, considering that the construction thickness of the curtain wall must meet the construction needs, and the size and position of the window of the curtain wall unit, the gradual form of the curtain wall unit is designed in combination with the internal function design of the modeling design, the design logic is that the curtain wall unit aluminum plate area of the part close to the backstage is larger, the glass area is smaller, the part close to the lobby part of the curtain wall glass area is largest and the aluminum plate area is smallest, and the specific design is as follows.

[0047] The curtain wall unit is divided into four types, and the width ratio of the aluminum plate area I-1 and the glass area I-2 is as follows: curtain wall unit one 1, 900:2100 mm; curtain wall unit two 2, 1300:1700 mm; curtain wall unit three 3, 1700:1300 mm; curtain wall unit four 4, 2100:900 mm. Four kinds of curtain wall units are provided here to meet the architectural modeling, so that the type of the curtain wall unit is relatively less, which is beneficial to its production and installation.

[0048] Combined with Figure 5 and Figure 7 , the plan view of the whole curtain wall I is a ring contour, and A and B are marked on the two sides, respectively, and four intervals are equally divided between A and B, and curtain wall unit four 4, curtain wall unit three 3, curtain wall unit two 2 and curtain wall unit one 1 are arranged in each interval. It should be noted here that the ring contour has two routes from A to B, and the arrangement modes of the two routes are consistent with Figure 7 , that is Figure 7 , the curtain wall units on both sides of A are in a symmetrical state.

[0049] The technical means disclosed in the scheme of the application are not limited to the technical means disclosed in the above-mentioned embodiments, and also include technical solutions composed of any combination of the above technical features.

Claims

1. A BIM-based parametric design method for a rotating curtain wall, characterized in that, It comprises the following steps: S1, design the curtain wall profile: S11, set the inclination angle α of the whole curtain wall (I); S12, form a regular smooth reference curve in AutoCAD through the "curve" command, then import it into Rhino to generate an architectural shape control boundary curve through the "rebuild curve" command, and then generate an architectural shape reference surface through the Rhino "curve lofting" command; S13, import the architectural boundary control curve into AutoCAD, then divide the curve equally through the "curve equal division" command, and use the equally divided curve as the curtain wall unit; S2, curtain wall unit design: the left and right sides of the curtain wall unit are respectively an aluminum plate area (I-1) and a glass area (I-2), the curtain wall unit is bent to meet the modeling of the curved surface of the building, and the proportion of the aluminum plate area (I-1) and the glass area (I-2) is controlled according to the position of the curtain wall unit, the curtain wall unit is divided into four types, and the width ratio of the aluminum plate area (I-1) and the glass area (I-2) is as follows: curtain wall unit one (1), 900:2100mm; curtain wall unit two (2), 1300:1700mm; curtain wall unit three (3), 1700:1300mm; curtain wall unit four (4), 2100:900mm; S3, modeling and rendering: S31, arrange several curtain wall units in sequence to form a facade curtain wall unit component group in Rhino through the "copy" command and the "move" command, then create a reference surface using the "rectangular surface" command, and then flow the curtain wall unit group to the previously created architectural shape target surface through the "surface flow" command to form a building shape with curtain wall units, completing the modeling; S32, deepen the architectural plane in combination with the model skin profile, and model other areas of the building body to form the final building shape; S33, render the final building shape.

2. The BIM-based parametric design method for a rotating curtain wall according to claim 1, characterized in that: The inclination angle α is 10°.

3. The BIM-based parametric design method for a rotating curtain wall according to claim 1, characterized in that: The curve in S13 is equally divided into 92 segments.

4. The BIM-based parametric design method for a rotating curtain wall according to claim 1, characterized in that: The height x width x thickness of the curtain wall unit is 26.1x3x0.35m.

5. The BIM-based parametric design method for a rotating curtain wall according to claim 1, wherein: The overhead of the whole curtain wall (I) is a ring profile, and A and B are marked on the two sides, respectively, there are four intervals between A and B, and curtain wall unit four (4), curtain wall unit three (3), curtain wall unit two (2) and curtain wall unit one (1) are arranged in each interval, respectively.

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