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論文中文名稱:簡支梁受行人步行力作用之振動行為研究 [以論文名稱查詢館藏系統]
論文英文名稱:Studies on dynamic behavior of a simply sup-ported beam subjected to pedestrian loads [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木工程系土木與防災碩士班
畢業學年度:104
畢業學期:第二學期
中文姓名:蕭志彥
英文姓名:Siao, Jhih-Yan
研究生學號:103428004
學位類別:碩士
語文別:中文
口試日期:2016/06/27
指導教授中文名:尹世洵
口試委員中文名:尹世洵;張順益;洪曉慧
中文關鍵詞:步行力人行橋
英文關鍵詞:pedestrian loadpedestrian bridge
論文中文摘要:近年來,人行陸橋除了實用性外,還必需要擁有優美的外觀設計,因此設計出質量輕而且細長的橋梁結構,但這使得行人在通過時引發了橋梁的過度振動,在服務性和安全性上的問題受到關注。
本研究發現過往許多國外學者對於行人步行力皆採用一個在橋梁上等速移動之週期性傅立葉函數外力來模擬,但是這樣的模擬卻與真實行人在行走過程中每一步的踩踏所施加作用力的情況不同,故本研究主要建立新的行人步行力數值模型模擬行人每一步的作用,並且施加於行走時腳與橋梁之接觸點上,進而求得橋梁在行人步行作用下的橋梁反應,後續以鋁梁進行行人動態步行試驗,以實際試驗結果與解析結果進行比較,探討此種模擬方法之適用性。
論文英文摘要:In recent years, in addition to practical consideration, the aesthetic design of pedestrian bridge becomes more important. Therefore, light-weight and slender structural design can be seen in modern pedestrian bridges. However, such a design may cause excessive vibration of a bridge when pedestrians pass through it. Then, many researchers pay attention to the servicea-bility issue.
This paper found that constantly moving periodic loads using Fourier functions to simulate pedestrian walks was adopted in the past studies. However, such simulations are different from each step of a pedestrian acting on the bridge. Thus, we established a new numerical model of pedestrian loads which can consider every step force of pedestrians when they walk, and ap-plied it to a pedestrian bridge. Then, the dynamic responses of the bridge due to the pedestrian load are calculated numerically. Next, we conducted a test of an aluminum beam where a pe-destrian passed. The comparison between the test results and numerical results can help us to investigate the applicability of the proposed simulation.
論文目次:摘 要 i
ABSTRACT ii
誌 謝 iii
目 錄 iv
圖目錄 vi
第一章 緒論 1
1.1 研究背景與目的 1
1.2 文獻回顧 2
1.3 章節概述 5
第二章 行人步行於橋梁所引致振動之理論推導 6
2.1 前言 6
2.2 受矩形函數外力作用下之橋梁動態反應 6
2.2.1 不考慮橋梁模態阻尼之動態反應 6
2.2.2 考慮橋梁模態阻尼之動態反應 9
2.3 橋梁於行人步行力作用下之動態反應 10
2.3.1 不考慮橋梁模態阻尼之動態反應 10
2.3.2 考慮橋梁模態阻尼之動態反應 15
第三章 行人步行於橋梁所引致振動之案例分析 20
3.1 前言 20
3.2 收斂性探討 20
3.3 不考慮橋梁模態阻尼之橋梁動態反應 25
3.3.1 考慮 、 之情況 32
3.3.2 考慮 、 之情況 35
3.3.3 考慮 、 之情況 37
3.3.4 考慮兩人行走下之情況 41
3.3.5 考慮到橋梁滿載之情況 54
3.4 考慮橋梁模態阻尼之橋梁動態反應 56
3.4.1 考慮 、 、 之情況 62
3.4.2 考慮 、 、 之情況 63
3.4.3 考慮 、 、 之情況 64
3.4.4 考慮兩人行走下之情況 64
3.4.5 考慮到橋梁滿載之情況 71
3.5 考慮橋梁模態阻尼對橋梁反應之影響 73
第四章 行人行走於鋁梁之動態試驗與解析解之討論 78
4.1 前言 78
4.2 動態步行試驗 78
4.3 試驗結果 79
4.4 試驗結果與解析解之比對 82
4.5 解析式之修正 83
第五章 結論與建議 87
5.1 結論 87
5.2 建議 88
參考文獻 89
論文參考文獻:1. V.T. Inman, H.J. Ralston, F. Todd, Human Walking, Williams & Wilkins, Baltimore, USA, 1981.
2. W.O. Fenn, “Direct determination of the work associated with changes in velocity of the body by means of a recording platform,” American Journal of Physiology, vol. 93, 1930, pp. 447-462.
3. J.E. Wheeler, “Prediction and control of pedestrian induced vibration in footbridges,” Journal of the Structural Division, ASCE, vol. 108, 1982, pp. 2045-2065.
4. J. Blanchard, B.L. Davies, J.W. Smith, “Design criteria and analysis for dynamic loading of footbridges,” Proceedings of the DOE and DOT TRRL Symposium on Dynamic
Behaviour of Bridges, Crowthorne, UK, May 19, 1977, pp. 90-106.
5. Miki Kobayashi, Prediction and Control of Pedestrian Induced Vibration on an Interior Footbridge, Technical University of Denmark, Department of Civil Engineering, 2011.
6. Anil K. Chopra, Dynamics of Structures: Theory and Applications to Earthquake Engi-neering, A Simon & Schuster company Englewood Cliffs, New Jersey, 1995.
論文全文使用權限:同意授權於2016-07-20起公開