Alam semula jadi adalah rujukan yang terbaik. Kerangka binaan boleh dikesan melalui alam semula jadi serta digunakan dalam reka bentuk struktur. Phyllotaxis adalah susunan tumbuh-tumbuhan yang boleh didapati daripada daun-daun yang mengelilingi stem dan kelopak bunga. Ia telah digunakan secara meluas dalam bidang rekabentuk bangunan. Keunikan susur atur garis spiral phyllotaxis telah memberi inspirasi bahawa ia mesti mempunyai kelebihan tersirat di sebalik ciptaan misterinya. Dalam kajian ini, keunikan susur atur spiral phyllotaxis telah digunakan dalam binaan struktur kubah agar menjadi sebuah bangunan baharu yang menyokong idea tersebut. Saiz struktur kubah ini adalah 20 meter garis pusat dan 10 meter tinggi. Analisis pengiraan telah dilaksanakan untuk mengenal pasti kesan susunan binaan struktur kubah apabila menggunakan dua perbezaan bebanan untuk setiap bangunan contohnya dua jenis beban iaitu beban simetri tegak, beban asimteri tegak dan beban angin. Melalui keputusan analisis, didapati bahawa ruang akibat beban angin bagi bebanan 1 dan dua adalah besar berbanding dengan bebanan 3 dan 4. Tekanan bagi model spiral phyllotaxis adalah besar bagi bebanan 1 dan 2. Kesimpulannya, kubah yang mengikut susur atur spiral phyllotaxis berupaya menanggung beban simetri tegak dan beban angin.
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Nature is our best source of references. The outstanding patterns found in nature are adopted in structural design. Phyllotaxis is the arrangement in plants, which can be found in leaves around the stem, petals on a flower. It has been widely used in architectural design. The uniqueness of spiral phyllotaxis in plants has inspired designers that there must be hidden advantages behind the mysterious creations. In this research, the unique spiral phyllotaxis has been adopted on dome structure as a new structural layout system. The structure which is single layer dome structures with member arrangement following spiral phyllotaxis pattern were modeled in this research. The dome structure is 20 meter in diameter and 10 meter in height. Computational analysis was carried out to determine the structural behavior of dome with new member arrangement pattern under different loading conditions such as symmetrical vertical loading and asymmetrical vertical loading and wind loading. From the analysis result, it is found that displacement in load case 1 and 2 due to wind loading is higher in x-direction if compared with load case 3 and 4 without wind load. The magnitudes of stresses in spiral phyllotaxis model have been observed to be higher in load case 1 and 2. As a conclusion, this study shows that spiral phyllotaxis has sufficient capacity to resist both vertical and wind load.
A study on structural behaviour of spiral phyllotactic spherical single layer dome / Chan Yin Min