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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 張國鎮(Kuo-Chun Chang) | |
dc.contributor.author | Quoc Bao Nguyen | en |
dc.contributor.author | 阮國寶 | zh_TW |
dc.date.accessioned | 2021-06-16T02:25:23Z | - |
dc.date.available | 2015-08-10 | |
dc.date.copyright | 2015-08-10 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-08-06 | |
dc.identifier.citation | REFERENCES
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[27] Modi V.J, Seto M.L, 'Suppression of flow-induced oscillations using sloshing liquid dampers: analysis and experiments,' Journal of Wind Engineering and Industrial Aerodynamics, vol. 67 & 68, pp. 611-625, 1997. [28] Modi V.J., Munshi S.R., 'An efficient Liquid Sloshing Damper for Vibration Control,' Journal of Fluids & Structures, vol. 12, pp. 1055-1071, 1998. [29] Reed D., Yu J., Yeh H., and Gardarsson S., 'Investigation of Tuned Liquid Dampers under Large Amplitude Excitation,' Journal of Engineering Mechanics, vol. 124, no. 4, pp. 405-413, 1998. [30] Reed D., Yu J., Yeh H. , and Gardarsson S., 'Tuned Liquid Dampers under large amplitude excitation,' Journal of Wind Engineering and Industrial Aerodynamics, Vols. 74-76, pp. 923-930, 1998. [31] Yu J.K, Wakahara T., and Reed D.A., 'A non-linear Numerical Model of the Tuned Liquid Damper,' Earthquake Engineering and Structural Dynamics, vol. 28, pp. 671-686, 1999. 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El, Isyumov N., and Siddique M.R., 'Numerical flow models to simulate tuned liquid dampers (TLD) with slat screens,' Journal of Fluids and Structures, vol. 20, pp. 1007-1023, 2005. [43] Frandsen J.B., 'Numerical predictions of tuned liquid tank structural systems,' Journal of Fluids and Structures, vol. 20, pp. 309-329, 2005. [44] Lee S.K., Park E.C., Min K.W, Lee S.H, Chung L. and Park J.H., 'Real-time hybrid shaking table testing method for the performance evaluation of a tuned liquid damper controlling seismic response of building structures,' Journal of Sound and Vibration, vol. 302, pp. 596-612, 2007. [45] Shang Chun-yu, Zhao Jin-cheng, 'Periods and Energy Dissipations of a Novel TLD Rectangular Tank with Angle-adjustable Baffles,' J. Shanghai Jiaotong Univ. (Sci.), vol. 13, no. 2, pp. 138-191, 2008. [46] Marivani M. and Hamed M.S., 'Numericalsimulation of structure response outfitted with a tuned liquid damper,' Computer and Structure, vol. 87, pp. 1154-1165, 2009. [47] Fujino Y., Sun L.M., Pacheco B.M. and Chaiseri P., 'Tuned Liquid Damper (TLD) for Suppressing Horizontal Motion of Structures,' Journal of Engineering Mechanics, vol. 118, no. 10, 1992. [48] Shimizu T., Hayama S., 'Nonlinear Response of Sloshing Based on the Shallow Water Wave Theory,' JSME International Journal, vol. 30, no. 263, pp. 806-813, 1987. [49] Lamb H., Hydrodynamics, 6th ed., Cambridge Univ. Press, 1932, pp. 619-621. [50] Miles J. W., Surface Wave Damping in Closed Basins, London: Proc. Royal Society of London, 1967, pp. 459-475. [51] Chopra Anil K., Dynamics of Structures: Theory and applications to Earthquake Engineering, Fourth Edition ed., California: Prentice Hall, 2012. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53525 | - |
dc.description.abstract | Current trends in the construction industry demand taller and lighter structures, which are also more flexible and have quite a low damping value. Vibrations of such structures due to wind, earthquake, and other dynamic disturbances can create problems from serviceability or safety viewpoints. Several techniques are available today to minimize the vibration of the structure, in which concept of using Tuned Liquid Damper is a newer one. Tuned Liquid Damper (TLD) is a new type of mechanical damper which relies on the sloshing of shallow liquid in a rigid tank for suppressing structural vibrations. Recent growing interest in liquid dampers is attributable to several potential advantages, such as: low costs; easy to install in existing structures; applicable to temporary use; non-restriction to unidirectional excitation; effective even for small-amplitude vibrations; and few maintenance requirements.
The effect of rectangular TLDs on responses of a multi-degree of freedom (MDOF) structure to lateral dynamic excitations was studied theoretically and experimentally in this research. Numerical analysis was implemented by using the nonlinear model of rectangular TLD which was proposed by Sun L.M. [1]. In this study, by applying Sun’s model, which is based on the shallow water wave theory, to a MDOF shear building, the structural responses under Harmonic Ground Motion, El Centro Earthquake and TCU072 Earthquake were predicted, respectively. The shaking table test was then carried out with a three-story steel shear building specimen to verify the theoretical results. Both the numerical analysis and experiment considered the cases of different numbers of TLDs attached to the main structure. This research also investigated the influence of variation in TLD parameters including Tuning ratio, Depth ratio and Mass ratio on structural responses as well as estimated the damping ratio of the structure with and without TLDs. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T02:25:23Z (GMT). No. of bitstreams: 1 ntu-104-R02521262-1.pdf: 4094641 bytes, checksum: 74c695691f4cd7fef88c23e8e35ab12c (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | TABLE OF CONTENT
ACKNOWLEDGEMENT i ABSTRACT ii TABLE OF CONTENT iii LIST OF FIGURES vi LIST OF TABLES xix NOTATIONS xx CHAPTER 1 INTRODUCTION 1 1.1. Tuned Liquid Damper 1 1.1.1. History 1 1.1.2. Classification 1 1.1.2.1. Tuned Sloshing Damper 1 1.1.2.2. Tuned Liquid Column Damper 2 1.1.2.3. Controllable Tuned Liquid Damper 3 1.1.3. Practical Implementations 4 1.2. Research Objectives 6 1.3. Research Scope 6 1.4. Organization of the Thesis 6 CHAPTER 2 LITERATURE REVIEW 7 CHAPTER 3 MATHEMATICAL FORMULATIONS 13 3.1. Assumptions 13 3.2. Governing Equations 13 3.3. Boundary Conditions 14 3.4. Derivation of Basic Equations 15 3.5. Damping of Liquid Sloshing 16 3.6. Fundamental Natural Frequency of Liquid Sloshing Motion 17 3.7. Empirical Coefficients for Wave Breaking Phenomenon 17 3.8. Base Shear Force due to Liquid Sloshing 18 3.9. TLD – Structure Interaction 18 CHAPTER 4 EXPERIMENTAL ANALYSIS 20 4.1. Description of the Experiment 20 4.1.1. Specimen 20 4.1.2. Experimental Devices 21 4.1.3. Input Excitations 23 4.1.4. Cases of the Experiment 24 4.2. Responses of the Structure to Lateral Excitations 26 4.2.1. Structural Response Time Histories 26 4.2.2. Natural Periods, Natural Frequencies and Response Spectra 34 4.3. Damping Ratio of the Structure 37 4.4. Influence of Variation of TLD Parameters on Structural Responses 38 4.4.1. TLD Parameters 38 4.4.2. Methods of Investigation 39 4.4.3. Results 39 4.4.3.1. Depth Ratio 39 4.4.3.2. Mass Ratio 40 CHAPTER 5 NUMERICAL ANALYSIS 41 5.1. Problem Statement 41 5.2. Responses of the Structure to Lateral Excitations 42 5.2.1. Structural Response Time Histories 42 5.2.2. Natural Periods and Frequencies 52 5.3. Damping Ratio of the Structure 53 5.4. Influence of Variation of TLD Parameters on Structural Responses 54 5.4.1. Tuning Ratio 54 5.4.2. Depth Ratio 55 5.4.3. Mass Ratio 55 CHAPTER 6 CONCLUSION AND FUTURE WORK 57 6.1. Conclusion 57 6.2. Future Work 58 REFERENCES 59 APPENDIX A Structural Response Time Histories in Experimental Analysis 62 APPENDIX B Structural Response Time Histories in Numerical Analysis 80 APPENDIX C Structural Response Time Histories in Comparison between Experimental and Numerical Analyses 98 AUTHOR BIOGRAPHY 116 | |
dc.language.iso | en | |
dc.title | 液體調諧阻尼應用於多自由度結構之研究 | zh_TW |
dc.title | Investigation of the Effect of Tuned Liquid Dampers (TLDs)
on Multi-Degrees of Freedom (MDOF) Structures | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 田堯彰(Meng-Hao Tsai),蔡孟豪(Yaun-Chan Tan) | |
dc.subject.keyword | Shear Building,Sloshing,Tuned Liquid Damper,Shallow Water Wave Theory,Structural Control,Damping,Energy Dissipation., | zh_TW |
dc.relation.page | 116 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2015-08-06 | |
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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