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論文中文名稱:行人所引致橋梁振動之研究 [以論文名稱查詢館藏系統]
論文英文名稱:Studies on Vibration of a Bridge Subjected to a Pedestrian [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:土木與防災研究所
畢業學年度:103
畢業學期:第二學期
出版年度:104
中文姓名:李祐亘
英文姓名:Yo-Syuan Lee
研究生學號:102428091
學位類別:碩士
語文別:中文
口試日期:2015/07/22
指導教授中文名:尹世洵
指導教授英文名:Shih-Hsun Yin
口試委員中文名:尹世洵;宋裕祺;洪曉慧
中文關鍵詞:步行力共振輕便橋
英文關鍵詞:Pedestrian-induced loadResonancePortable and lightweight bridges
論文中文摘要:由於現代都市的景觀需求,人行天橋的外觀設計比起以往更加受到重視。有特色的人行天橋有機會成為新的都市地標,由於新建築材料的研發,減輕橋體的質量以及大跨距的橋長設計,使得人行天橋較易受到外在作用力影響,倘若行人的步行頻率與人行天橋的主要頻率太過接近,可能會導致過大的橋體晃動,使得行人於行走時感到不適,也會影響人行天橋的結構安全。
本研究首先探討行人步行於橋樑時所引致之振動行為,再以鋼桁架輕便橋進行行人動態步行試驗,橋體上安裝多個加速度計記錄動態試驗數據,並使用有限元素軟體MSC. Patran進行數值模擬,分析後與實際試驗結果進行比較,探討鋼桁架輕便橋受步行力的結構行為與影響,檢討橋梁受步行荷載之數值模擬的正確性,並期望本研究未來將可做為相關研究之參考。
論文英文摘要:Due to the needs of modern urban landscape, the architectural design of pedestrian bridges is getting more attention than ever. One distinctive bridge will have the opportunity to become a new landmark. The development and use of new materials, lead to pedestrian bridges with lighter weight and longer span, which makes the bridges more sensitive to dynamic loads. If pedestrian pacing rates are very close to natural frequencies of bridges, excessive vibrations of bridges may occur and let pedestrians feel uncomfortable when passing the bridges. They also affect the structural safety of pedestrian bridges.
In this thesis, first, we investigate vibrations of bridges caused by pedestrian walking across them. Second, we use a portable and lightweight steel bridge to do the experiment where the pedestrian passes over the bridge. Then, we use finite element software MSC. Patran to simulate the experiment and compare the numerical simulation results with the experimental data recorded from the accelerometers installed in the bridge. Finally, we examine the influences of pedestrian walking load on the structural behavior of the bridge, and check the validity of the numerical simulations. We except this study can be useful for future researches.
論文目次:中文摘要 i
英文摘要 ii
誌謝 iv
目錄 v
表目錄 ix
圖目錄 xi
第一章 緒論 1
1.1 研究背景與目的 1
1.2 研究內容與流程 2
1.3 文獻回顧 3
1.4 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 7
2.1 前言 7
2.2 國外文獻對於步行力的模擬 7
2.3 橋梁於移動諧和力等速度通過時之動態反應 9
2.4 案例分析 18
2.4.1 案例假設 18
2.4.2 解析解 20
2.4.3 數值模擬 21
2.4.5 結果探討 27
2.5 步行力所引致橋梁之共振反應 28
第三章 行人行走於輕便橋之動態試驗 31
3.1 前言 31
3.2 輕便橋設計 31
3.2.1 輕便橋架構配置 33
3.3 試驗設備 36
3.3.1 硬體設備 36
3.3.1 軟體設備 38
3.4 儀器配置及支承設定 38
3.5 動態試驗 40
3.5.1 頻率試驗 40
3.5.2 動態步行試驗 40
3.6 試驗結果 41
3.7 結果探討 50
第四章 行人行走於輕便橋之數值模擬 51
4.1 前言 51
4.2 有限元素分析模型之建立 51
4.2.1 有限元素模型 51
4.2.2 材料性質與邊界條件 54
4.2.3 諧和力模擬行人之步行載重 54
4.3 頻率分析結果 58
4.4 瞬態分析結果 60
4.5 模擬行人步行載重之改善 64
4.6 結果探討 72
第五章 結論與建議 73
5.1 結論 73
5.2 建議 74
參考文獻 75
論文參考文獻:[1] B. Wolmuth, J. Surtees, Crowd-related failure of bridges, Proceedings of the Institution of Civil Engineers: Civil Engineering, Volume 156, Issue 3, 2003, 116-123
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[3] J.W. Qin, S.S. Law, Q.S. Yang, N. Yang, Pedestrian–bridge dynamic interaction, including human participation, Journal of Sound and Vibration, Volume 332, Issue 4, 2013, 1107-1124
[4] Lin, J.-H., Zhang, S.-Y., Lu, F., Zhang, Y.-H, Precise integration for bridges subjected to moving harmonic loads, Chinese Journal of Computational Mechanics , Volume 23, 2006, 385-390
[5] SUN Li-min, YAN Xing-fei, Human Walking Induced Footbridge Vibration and Its Serviceability Design, Journal of Tongji University, Volume 32, Issue 8, 2004, 996-999
[6] 黃柏慎, 開合式單跨救災輕便橋之研究開發, 碩士論文, 國立臺北科技大學土木與防災研究所, 台北, 2013
[7] F.C. Harper, W.J. Warlow, B.L. Clarke, The forces applied to the floor by the foot in walking, National Building Studies, Research Paper 32, Department of Scientific and Industrial Research, Building Research Station, London, 1961.
[8] F.W. Galbraith, M.V. Barton, Ground loading from footsteps, Journal of the Acoustic Society of America, Volume 48, Issue 5, 1970, 1288-1292.
[9] J.E. Wheeler, Prediction and control of pedestrian induced vibration in footbridges, ASCE Journal of the Structural Division, Volume 108, Issue Number ST-9, 1982, 2045–2065.
[10] H. Bachmann, W. Ammann, Vibrations in Structures - Induced by Man and Machines, Structural Engineering Documents, Volume 3e, International Association of Bridge and Structural Engineering (IABSE), Zürich, 1987
[11] E.T. Ingólfsson, C.T. Georgakis, J. Jönsson, Pedestrian-induced lateral vibrations of footbridges: A literature review, Engineering Structures, Volume 45, 2012, 21-52
[12] Miki Kabayashi, Prediction and Control of Pedestrian Induced Vibration on an Interior Footbridge, Technical University of Denmark, Department of Civil Engineering, 2011
[13] P. Young, Improved floor vibration prediction methodologies, ARUP Vibration Seminar, October 4, 2001.
[14] Yeong-Bin Yang, Jong-Dar Yau, Theory of Vehicle-Bridge Interaction for High Speed Railway, 2000
[15] 夏禾, 車輛與結構動力相互作用, 科学出版社, 北京, 2002
[16] AASHTO, LRFD Guide Specifications for the Design of Pedestrian Bridges, 2009
[17] Eurocode, EN 1990 : Basis of structural design, 2002
論文全文使用權限:同意授權於2015-08-17起公開