| 研究生: |
李嘉嘉 Li, Chia-Chia |
|---|---|
| 論文名稱: |
輕量曲面木薄板結構之構築研究 Lightweight Curved Surface Structure using Plywood Sheets |
| 指導教授: |
杜怡萱
Tu, Yi-Hsuan |
| 學位類別: |
碩士 Master |
| 系所名稱: |
規劃與設計學院 - 建築學系 Department of Architecture |
| 論文出版年: | 2014 |
| 畢業學年度: | 102 |
| 語文別: | 中文 |
| 論文頁數: | 208 |
| 中文關鍵詞: | 輕量結構 、曲面 、木薄板 、數位製造 |
| 外文關鍵詞: | lightweight structure, curved surface, plywood sheet, digital manufacturing |
| 相關次數: | 點閱:159 下載:9 |
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構造輕量化是未來結構的趨勢,材料用量低為最大優點,若材料易取得且可回收,則可降低運輸成本及減少原料開採,降低環境負擔。本研究以目前僅用於室內裝修的木薄板作為結構材,在可拆解移動的前提下,以開槽曲面薄版系統製作曲面構件,設計並實際構築一座單向變曲率的拱形結構。拱型曲線的決定考量木薄板抗彎能力差,故以自重下僅受純軸力的懸鍊線(catenary)作為設計形狀曲線。
設計進行前,先以材料試驗確認木薄板材料性質,透過SAP2000結構分析軟體進行構件曲率分析。因木薄板非常柔軟,而開槽變形太大,產生幾何非線性之現象,無法以一般結構分析方法分析。本研究採用增量式分析,以多次疊加的方式,表現構件幾何非線性之行為,再以木薄板構件曲率試驗結果驗證,確定此分析方法合理可行,並迴歸曲率與槽寬比之關係式。依據關係式與設計曲線,進行結構細部設計以及實構築,再根據實構中失敗的經驗,採取相應對策修正設計,如改良搭接方式、修正基礎邊界及構造減重等,實構築之初期僅採用傳統工具製造構件,而後期改良設計之後,改採數位製造的方式,使得製作過程更加準確且快速,再依可行的方案重新設計構築一組最終設計結構作為研究成果,最後以SAP2000建立四組模型進行整體結構分析,比較分析結果,了解實構過程成功與失敗的因素。
本研究整合了材料試驗、結構分析與參數式設計方法,並利用數位製造技術大幅減少施工時間及施工誤差,最終完成人力可組裝及搬運的輕量曲面拱形結構。
This study utilized plywood sheets which are only used for interior design as the structural material. A “slit curved surface system” is proposed for design and construction of a one-way curved surface arch structure. The design purpose is to make a lightweight and easy-to-construct structure that can be assembled and disassembled with manual labor.
Before the design, several material tests were performed to determine the material characteristics of the plywood sheets. SAP2000 structural analysis software was used to estimate the member curvature and verified with the results of member curvature experiments. The relationship between curvature and slit width ratio was then derived from regression analysis and applied to the construction plan. Several unsuccessful attempts were made on the construction and the detailed design was modified based on the experience from each attempt. In the initial construction, only traditional manufacturing technique was used. Digital manufacturing was adopted in the modified design for faster and more precise manufacturing process. The final constructed structure could successfully stand on its own and be easily moved by 2 or 3 people. The structural analysis of four analytical models of the structures was performed by using SAP2000 to compare and discuss the difference between different detailed designs.
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[6]ICD, ICD/ITKE Research Pavilion 2011, Retrieved 2013/11/10, from
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