請用此 Handle URI 來引用此文件：
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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 楊永斌 | |
| dc.contributor.author | Yu-Hsuan Wu | en |
| dc.contributor.author | 吳侑軒 | zh_TW |
| dc.date.accessioned | 2021-06-07T23:44:40Z | - |
| dc.date.copyright | 2014-07-09 | |
| dc.date.issued | 2014 | |
| dc.date.submitted | 2014-07-07 | |
| dc.identifier.citation | Brincker, R., Zhang, L., and Andersen, P. (2001),”Modal Identification of Output-only Systems Using Frequency Domain Decomposition,” Smart Materials and Structures 10 (3): 441-445
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(2012), Dynamics of Structures: Theory And Applications To Earthquake Engineering, 4th edition, Prentice Hall, Upper Saddle River, New Jersey. Clough, R. W., and Penzien, J. (1993), Dynamics of Structures, 2nd edition, McGraw-Hill, New York. Cooley, J. W. and Tukey, J .W. (1965), “An Algorithm for the Machine Calculation of Complex Fourier Series”, Mathematics of Computation, 19(90):297-301 Fan, W., and Qiao, P.Z. ,(2011) ,”Vibration-Based Damage Identification Methods: a Review and Comparative Study”, Structural Health Monitoring , 10(1): 83-111 Farrar, C. R., and James III, G. H., (1997), ”System Identification from Ambient Vibration Measurements on a Bridge,” Journal of Sound and Vibration, 205(1): 1–18 Fryba, L. (1972), Vibration of Solids and Structures under Moving Loads, Noordhoff International Publishing, Groningen, The Netherlands Gere, J. M. and Goodno, B. J., Mechanics of Materials, 7nd edition, Cengage Learning, Stamford. 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S.,(1997), ”Detection of Structural Damage through Changes in Frequency: a Review”, Engineering Structures, 19(9): 462–477 Siringoringo, D. M., and Fujino, Y.,(2008), ”System Identification of Suspension Bridge from Ambient Vibration Response,” Engineering Structures, 30(2): 462–477 Waldron, K. J., and Kinzel, G. L. (2004), Kinematics, dynamics, and design of machinery, 2nd edition, Hoboken, New Jersey: J. Wiley Yang, Y. B., Chang, K. C., and Li, Y. C. (2013),”Filtering Techniques for Extracting Bridge Frequencies from a Test Vehicle Moving over the Bridge,”Engineering Structures, 48: 353–362 Yang, Y. B., and Chang, K. C. (2009),”Extraction of Bridge Frequencies from the Dynamic Response of a Passing Vehicle Enhanced by the EMD technique,”Journal of Sound and Vibration, 322: 718–739 Yang, Y. B., and Chang, K. C. (2009),”Extracting the Bridge Frequencies Indirectly from a Passing Vehicle: Parametric study,”Engineering Structures, 31: 2448–2459 Yang, Y. B., Chen, W. F., Yu, H. W., and Chan, C, S. (2013),”Experimental Study of a Hand-drawn Cart for Measuring the Bridge Frequencies,” Engineering Structures, 57: 222–231 Yang, Y. B., Li, Y. C. and Chang, K. C. (2012),”Using Two Connected Vehicles to Measure the Frequencies of Bridges with Rough Surface: a Theoretical Study,” Acta Mechanica, 223: 1851–1861. Yang, Y. B., Li, Y.C., and Chang, K.C. (2014), “Constructing the Mode Shapes of a Bridge from a Passing Vehicles: A Theoretical Study,” Smart Structures & Systems, An International Journal, 13(5), 797-819. Yang, Y. B., and Lin, B. H. (1995), “Vehicle-bridge Interaction Analysis by Dynamic Condensation Method,” Journal of Structural Engineering, ASCE, 121(11), 1636-1643. Yang, Y. B., and Lin, C. W. (2005),”Vehicle-bridge Interaction Dynamics and Potential Applications,” Journal of Sound and Vibration, 284: 205–226 Yang, Y. B., Lin, C. W., and Yau, J. D. (2004),”Extracting Bridge Frequencies from the Dynamic Response of a Passing Vehicle,”Journal of Sound and Vibration, 272: 471–493 Yang, Y. B., and Yau, J. D. (1997),”Vehicle-Bridge Interaction Element for Dynamic Analysis,”Engineering Structures, 19(11): 936–944 Yang, Y. B., Yau, J. D., and Hsu, L. C., (1997),”Vibration of Simple Beams due to Trains Moving at High Speeds,”Journal of Structural engineering, 123: 1512–1518 Yao, Z., Wang, L., and Xiang, Z. (2012),”Damage Detection by Mode Shape Square Extracted from a Passing Vehicle”, Journal of Sound and Vibration, 331: 291–307 Yao, Z., Lie, S. T., and Xiang, Z. (2013),”Damage Detection Method Based on Operating Deflection Shape Curvature Extracted from Dynamic Response of a Passing Vehicle”, Mechanical Systems and Signal Processing, 35: 238–254 李育謙(2011),「濾波技巧於橋梁頻率間接量測法之應用」，國立台灣大學土木工程學系碩士論文 陈上有、夏禾(2009),「从过桥车辆响应中识别桥梁结构基本自振频率的方法」，工程力学，26(8): 88-94 陈上有、夏禾(2007),「变速移动荷载作用下简支梁的动力响应分析」，中国铁道科学，28(6): 41-46 彭献、刘子建、洪家旺(2006),「匀变速移动质量与简支梁耦合系统的振动分析」，工程力学，23(6): 25-29 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/16734 | - |
| dc.description.abstract | 颱風與地震等天災過後，橋梁的安全性是相當重要的課題。傳統識別橋梁動態特性的方法，是直接將感測器安裝於橋梁上，並利用感測器所量測到的橋梁動力反應，進行分析與識別，由此獲得橋梁頻率、模態或是阻尼比等資訊，此方法稱之為直接量測法；近年來，為了改善直接量測法的缺點，間接量測法被提出，其概念是讓一輛加裝感測器的實驗車輛通過橋梁，車體激盪橋梁的同時，橋體反應也會影響車體，因此，感測器所記錄的車體反應，也隱含了橋體的訊息，此點使得我們可以間接地由車輛反應，獲得橋梁的模態參數，而由於其高機動性的特性，可在天災之後更快速地獲取橋梁模態參數，提供工程師破壞檢測與安全評估之參考依據。
本研究目的在於利用數值模擬進行間接量測法之探討。先從基本的車橋互制理論開始推導，之後引入快速傅立葉轉換(fast Fourier transformation)、頻率域分析(frequency domain decomposition)及因應間接量測法，所提出的功能譜密度函數矩陣識別法(matrix identification method based on the power spectral density)等訊號處理手段，探討一般路面下的間接量測結果，以及考慮路面粗糙度影響下之情況；同時也將車橋互制模型拓展至變速度車輛量測，藉由許多例題分析，探討更廣義的量測情境下間接量測之效果；並且初步探討利用三輛相同、等速、等間距的車輛，進行橋體的損傷識別；最後，根據本文各章的例題分析，吾人將針對各種案例及其效應提出具體結論，以作為未來研究之參考。 | zh_TW |
| dc.description.abstract | It is an important issue to confirm the safety of bridges after the occurrence of a natural disaster, such as typhoons and earthquakes. The conventional method for identifying bridge dynamic properties is to analyze the dynamic response of the bridge via the vibration sensors directly mounted on the bridge. Through the use of proper analysis techniques, the frequencies, mode shapes or damping ratios of the bridge can be obtained. Such an approach has been referred to as the direct approach.
In recent years, in order to improve the shortcomings of the direct approach, another concept called the indirect approach had been proposed. The key concept of the indirect approach is as follows: We let a test vehicle installed with sensors to pass the bridge of concern. While the bridge will be excited by the test vehicle, the response of the vehicle is also dominated by the bridge. Therefore, the response recorded of the vehicle during its passage over the bridge will contain the information of the bridge. Such a fact allows us to extract the modal parameters of the bridge from the dynamic response of the vehicle in an indirect way. Because of its mobility, the indirect method can be effectively used to identify the dynamic properties of a number of bridges in a region after the occurrence of a major natural hazard. Such information is crucial to detection of damages and evaluation of structural soundness of the bridges. The objective of this study is to investigate the indirect approach of bridge frequency measurement by numerical simulations. We shall start from the basic vehicle-bridge interaction theory. Second, we shall introduce the signal processing methods such as the fast Fourier transformation, frequency domain decomposition, and the matrix identification method based on the power spectral density, tailored specifically for the the indirect approach. We will investigate the response of the test vehicle traveling over bridges with smooth road surface. The we will proceed to consider the influence of road roughness on the vehicle response. Also, we shall extend the model to include the effect of varying speeds for the vehicle to examine the result under more general scenarios using various examples. At last, we shall investigate the feasibility of damage identification under the special scenario of using three identical vehicles moving with the same speed and spacing over the bridge. The conclusions accumulated in all previous chapters for the effects studied will be summarized in the concluding chapters, along with the directions for future research outlined. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-07T23:44:40Z (GMT). No. of bitstreams: 1 ntu-103-R01521203-1.pdf: 11688588 bytes, checksum: 4a770eddcfc508a06f4c6a99031a8a0e (MD5) Previous issue date: 2014 | en |
| dc.description.tableofcontents | 目錄
摘要 I Abstract III 目錄 V 圖目錄 IX 表目錄 XIII 第一章 導論 1 1.1 研究背景 1 1.2 研究目的 3 1.3 論文架構 3 第二章 文獻回顧 5 2.1 前言 5 2.2 車橋互制系統 7 2.3 直接量測法 8 2.4 結構監測與損傷識別 9 2.5 間接量測法 10 2.6 結論 11 第三章 車橋互制系統理論 12 3.1 前言 12 3.2 車橋互制系統及模型 12 3.2.1 車橋互制關係：梁的撓曲與載重關係 12 3.2.2 車橋互制關係：懸浮質量系統的車橋運動方程式 13 3.2.3 車橋互制關係：其他模型 14 3.3 車橋互制系統簡化假設下的解析解 15 3.3.1 橋梁的解析解 15 3.3.2 車輛的解析解 17 3.4 車橋互制系統的有限元素模型數值解 19 3.4.1 橋梁與車輛的有限元素模型 20 3.4.2 有限元素法動力分析 24 3.5 例題分析 25 3.6 結論 26 第四章 橋梁頻率間接量測法及訊號處理 32 4.1 前言 32 4.2 訊號處理 32 4.2.1 快速傅立葉轉換(fast Fourier transformation: FFT) 32 4.2.2 頻率域分解(frequency domain decomposition) 33 4.2.3 功率譜密度函數矩陣判別法 35 4.2.4 與主成分分析(principle component analysis: PCA)之比較 36 4.3 間接量測法案例驗證 36 4.4 間接量測法參數分析 38 4.4.1 更動車輛參數 38 4.4.2 更動橋梁參數 39 4.5 結論 39 第五章 路面粗糙度引致外力之影響 50 5.1 前言 50 5.2 路面粗糙度模擬 50 5.3 考慮路面粗糙度的動力分析與間接量測法 52 5.3.1 考慮路面粗糙度之車橋互制模型 52 5.3.2 考慮路面粗糙度的間接量測法之案例驗證 54 5.3.3 考慮路面粗糙度的間接量測法之參數分析 54 5.4 車速對粗糙度頻率之縮放效應 55 5.5 考慮路面粗糙度引致外力下之訊號處理 56 5.5.1 例題一：相同量測車 57 5.5.2 例題二：不同量測車 57 5.6 結論 58 第六章 變速度車橋模型 83 6.1 前言 83 6.2 變速度車橋模型的理論解與數值解 83 6.2.1 合理簡化下的解析解 84 6.2.2 有限元素數值解 86 6.3 情境模擬與例題分析 87 6.3.1 等加速度運動 87 6.3.2 常見運動函數：初始速度為零 88 6.3.3 常見運動函數：低速區 90 6.4 結論 91 第七章 車橋互制系統於損傷識別之應用 100 7.1 前言 100 7.2 三輛車之車橋互制系統 100 7.2.1 合理簡化下之解析解 100 7.2.2 數值關係 102 7.3 損傷識別之應用 104 7.3.1 單輛車行經損傷橋梁 104 7.3.2 三輛車行經損傷橋梁 105 7.4 結論 106 第八章 結論與未來展望 119 8.1 總結論 119 8.1.1 車橋互制系統理論 119 8.1.2 橋梁頻率間接量測法及訊號處理 119 8.1.3 路面粗糙度引致外力之影響 119 8.1.4 變速度車橋模型 120 8.1.5 車橋互制系統於損傷識別之應用 120 8.2 未來展望 121 參考文獻 122 | |
| dc.language.iso | zh-TW | |
| dc.subject | 橋梁頻率 | zh_TW |
| dc.subject | 實驗車 | zh_TW |
| dc.subject | 車橋互制 | zh_TW |
| dc.subject | 變速度運動 | zh_TW |
| dc.subject | 訊號處理 | zh_TW |
| dc.subject | 路面粗糙度 | zh_TW |
| dc.subject | 損傷識別 | zh_TW |
| dc.subject | bridge frequency | en |
| dc.subject | vehicle-bridge interaction | en |
| dc.subject | varying-speed motion | en |
| dc.subject | test vehicle | en |
| dc.subject | damage identification | en |
| dc.subject | signal processing | en |
| dc.subject | road surface roughness | en |
| dc.title | 車橋互制理論於橋梁頻率間接量測法之應用 | zh_TW |
| dc.title | Application of the vehicle-bridge interaction theory to indirect approach for measuring bridge frequencies | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 102-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 朱聖浩,姚忠達,張荻薇 | |
| dc.subject.keyword | 橋梁頻率,損傷識別,路面粗糙度,訊號處理,變速度運動,車橋互制,實驗車, | zh_TW |
| dc.subject.keyword | bridge frequency,damage identification,road surface roughness,signal processing,varying-speed motion,vehicle-bridge interaction,test vehicle, | en |
| dc.relation.page | 127 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2014-07-08 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
| 顯示於系所單位： | 土木工程學系 | |
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