膜結構看臺作為各種較大場地的遮陽功能建筑，以其多樣的外形和良好的力學性能逐漸代替了傳統形式看臺，然而這種多樣的外形離不開設計師的各種力學設計和優化，那么膜結構看臺的外形設計技巧是怎樣的？

As a sunshade building in a variety of large sites, the membrane structure grandstand gradually replaces the traditional form grandstand with its various shapes and good mechanical properties. However, this variety of shapes can not be separated from the various mechanical designs and optimizations of designers. What are the shape design skills of the membrane structure grandstand?

1、雖然膜結構可以形成大面積的覆蓋空間，從方便膜面加工制作及安裝的角度來看，大覆蓋面積的膜結構應進行適當的分區，以減小單片膜面的面積。將膜面分區的另一個好處是萬一以后發生膜材撕裂的情況，拆卸修補或更換的操作比較方便。

1. Although the membrane structure can form a large area of coverage space, from the perspective of facilitating the processing, manufacturing and installation of the membrane surface, the membrane structure with large coverage area should be properly partitioned to reduce the area of a single membrane surface. Another advantage of dividing the membrane surface is that in case of membrane tearing in the future, it is convenient to remove, repair or replace.

2、對于復雜曲面設計，其膜面是由簡單的曲面組合而成的，對復雜造型的膜面進行分區時要考慮其曲面變化、排水安排及支撐結構體系等因素。

2. For complex surface design, the membrane surface is composed of simple surfaces. When dividing the membrane surface with complex shape, factors such as surface change, drainage arrangement and support structure system should be considered.

3、柔性邊界膜結構的找形基準點，即膜角節點板的的位置所在，它與膜和支承結構的連接點位置及連接件的尺寸關系密切，應在查看有關圖紙并經現場實際考察后，根據具體情況而定。

3. The form finding datum point of the flexible boundary membrane structure, i.e. the location of the membrane corner gusset plate, is closely related to the location of the connection point between the membrane and the supporting structure and the size of the connection piece. It should be determined according to the specific situation after reviewing the relevant drawings and on-site actual investigation.

4、傘頂的位置影響到膜面的形狀，帽圈的大小直接關系到傘頂處膜的應力大小和膜面焊接制作時的難易程度。為避免膜面應力在傘頂處過于集中，防止熱合線過于密集，帽圈的尺寸不易過小。

4. The position of the umbrella top affects the shape of the membrane surface, and the size of the hat ring directly affects the stress of the membrane at the umbrella top and the difficulty of welding the membrane surface. In order to avoid the excessive concentration of membrane surface stress at the umbrella top, and prevent the heat sealing line from being too dense, the size of the hat collar is not easy to be too small.

5、與膜面相連接的索，如邊索、加強索、脊谷索等的弧度不僅影響到膜面的形狀與覆蓋面積，對索的內力影響也非常明顯，同時邊索的弧度還影響到膜角點處膜布的寬度及節點板邊線的夾角。工程應用上一般取邊索弧形的矢跨比在1：10左右。

5. The radian of cables connected to the membrane surface, such as side cables, reinforcing cables and ridge valley cables, not only affects the shape and coverage area of the membrane surface, but also has a significant impact on the internal force of the cables. At the same time, the radian of the side cables also affects the width of the membrane cloth at the membrane corners and the included angle of the edge line of the gusset plate. In engineering application, the rise span ratio of side cable arc is generally about 1:10.

6、膜面的應力分布及大小，不僅影響著膜結構看臺外觀的找形，還關系到結構張成后的剛度，所以確定膜面應力時要考慮到所用膜材料的性能、張拉方法及實際張拉的難易程度。

6. The distribution and size of the membrane surface stress not only affect the shape finding of the membrane structure grandstand appearance, but also relate to the stiffness of the structure after tensioning. Therefore, when determining the membrane surface stress, the performance of the membrane materials used, the tensioning method and the actual tensioning difficulty should be considered.

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This is all about the appearance design skills of the membrane structure stand. If you have any questions, please come to our website http://www.jncx.com.cn Consult!