ارزیابی عملکرد سیستم نوین کنترل سازه¬ای غیرفعال ترکیبی شامل جداساز قائم لرزه‌ای و میراگر جرمی تنظیم‌شونده
محورهای موضوعی : آنالیز سازه - زلزله
محمدامین فدائی
1
,
مسعود نکویی
2
,
محمدرضا منصوری
3
1 - مربی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 - دانشیار، گروه مهندسی عمران، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
3 - گروه مهندسی عمران، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
کلید واژه: سیستم کنترلی ترکیبی, جداساز قائم لرزه¬ای, میراگرجرمی تنظیم شونده, جداساز لرزه¬ای, زیرسیستم جرمی و سختی ,
چکیده مقاله :
روش جداسازی ¬جرمی قائم (VMI) یکی ¬ازرویکردهای نوین و درحال گسترش درکنترل لرزه‌ای سازه‌ها محسوب میشود. دراین روش، سازه به دو زیرسیستم جرمی و سختی تفکیک¬شده و ازطریق یک میراگر به یکدیگرمتصل می‌شوند. استفاده ازمیراگرجرمی¬تنظیم‌شونده (TMD) بر روی این¬دو زیرسیستم، منجربه کنترل مؤثر ارتعاشات سازه تحت اثربارهای جانبی میشود. سیستم کنترل ترکیبی پیشنهادی دراین پژوهش، با ترکیب دو سامانه غیرفعال VMI و TMD ایجاد شده و پارامترهای کلیدی آن، شامل سختی جداساز، فرکانس و میرایی TMD، در شرایط مختلف بررسی¬شده‌اند تا بیشترین میزان کارایی حاصل گردد. مدل‌های مورد بررسی شامل سازه‌های فولادی ۵ و ۱۵ طبقه بوده که تحت اثربارهای لرزه‌ای و هارمونیک تحلیل شده‌اند. نتایج نشان می‌دهد که این سیستم کنترلی ترکیبی، بهبود چشمگیری در پاسخ لرزه‌ای سازه نسبت به حالت‌های بدون کنترل و تنها با جداسازی¬جرمی¬قائم دارد. به‌طورخاص، کاهش 3۵ درصدی بیشینه تغییرمکان زیرسیستم¬جرمی، 4۵ درصدی بیشینه برش¬پایه و 3۰ درصدی بیشینه شتاب بام نسبت به سازه بدون جداسازی مشاهده شد. همچنین، درمقایسه با سازه مجهز به جداسازی¬جرمی¬قائم، مقادیر متناظر این کاهش‌ها به ترتیب 3۰، 2۶ و 2۷ درصد برآورد شد. کارایی این سیستم برای هردو بارگذاری لرزه‌ای و هارمونیک قابل¬توجه بوده و منجر به کاهش محسوس تغییرمکان-بام، برش¬پایه، بیشینه دریفت و شتاب در هردو زیرسیستم میشود. علاوه براین، سطح عملکرد کلی سازه بهبودیافته و رفتار آن عمدتاً درمحدوده خطی باقی می‌ماند که این امر، کاهش پاسخ سازه و میزان خرابی ناشی از بارهای جانبی را به دنبال دارد.
Vertical Mass Isolation (VMI) is a novel and rapidly developing approach in the seismic control of structures. In this method, the structure is separated into two subsystems—mass and stiffness—which are connected through a damper. The application of a Tuned Mass Damper (TMD) between these subsystems leads to effective vibration control under lateral loads. The hybrid passive control system proposed in this study combines the VMI and TMD mechanisms. Key parameters of the system, including the isolator stiffness, and the frequency and damping ratio of the TMD, are examined under various conditions to achieve optimal performance. The investigated models consist of 5 and 15 story steel structures analyzed under both seismic and harmonic excitations. The results indicate that the proposed hybrid system significantly improves the structural response compared to both the uncontrolled case and the case equipped with VMI alone. Specifically, reductions of 35% in peak mass displacement, 45% in peak base shear, and 30% in peak roof acceleration were observed relative to the uncontrolled structure. Moreover, in comparison with the structure equipped solely with VMI, the corresponding reductions were estimated to be 30%, 26%, and 27.4%, respectively. The proposed system demonstrates notable effectiveness under both seismic and harmonic loading, leading to considerable reductions in roof displacement, base shear, peak drift, and acceleration in both subsystems. Additionally, the overall performance level of the structure is improved, with its behavior remaining predominantly linear, thereby reducing structural responses and potential damage under lateral loads.
[1] Nekooei M, Ziyaeifar M. Vertical seismic isolation of structures. Journal of Applied sciences. 2008;8(24):4656-61. https://doi.org/10.3923/jas.2008.4656.466
[2] Moeinadini A, Ziyaeifar M, Nekooei M, editors. Facade isolation in seismic design of tall buildings. Structures; 2024: Elsevier. https://doi.org/10.1016/j.istruc.2023.105416
[3] Abdi MS, Nekooei M, Jafari M-A. Seismic control of multi-degrees-of-freedom structures by vertical mass isolation method using MR dampers. J Earthquake Engineering Engineering Vibration. 202
; https://doi.org/10.1007/ s11803-024-2251-y
[4] Milanchian R, Hosseini M, Nekooei M. Vertical isolation of a structure based on different states of seismic performance. J Earthquakes Structures. 2017;13(2):103-18
https://doi.org/10.12989/eas.2017.13,2,103.
[5] Milanchian R, Hosseini M. Study of vertical seismic isolation technique with nonlinear viscous dampers for lateral response reduction. Journal of Building Engineering. 2019;23 :144-54.
https://doi.org/10.1016/j.jobe.2019.01.026
[6] Ziyaeifar M, Gidfar S, Nekooei M. A model for mass isolation study in seismic design of structures. Structural Control and Health Monitoring. 2012;19(6):627-45. https://doi.org/10.1002 /stc.459
[7] Nekooei M, Rahgozar N, Rahgozar N. Vertical seismic isolated rocking-core system. Proceedings of the Institution of Civil Engineers-Structures Buildings. 2021;174(8):627-36. https://doi.org/10.1680/jstbu.19.00158
[8] Zhu Y-P, Lang Z, Fujita K, Takewaki I. Analysis and design of non-linear seismic isolation systems for building structures—An overview. Frontiers in Built Environment. 2023;8:1084081. https://doi.org/10.3389/fbuil.2022.1084081
[9] Nekooei M, Ziyaeifar M, editors. Seismic behaviour of vertical mass isolated structures. AIP Conference Proceedings; 2008: American Institute of Physics. http://dx.doi.org/10.1063/1.2963769
[10] Farajiani F, Nekooei M, Mansoori MR, editors. Study of vertical mass isolation structures equipped with metallic dampers with a focus on the position of stiff subsystem. Structures;2021:Elsevier. https://doi.org/10.1016/j.istruc.2021.06.003
[11] Den Hartog J, fourth edition Mechanical J. Vibrations: McGraw-Hill Book Company, Inc., New York; 1956.
[12] Sarkar S, Fitzgerald B. Design of Tuned Mass Damper Fluid Inerter for Wind-Induced Vibration Control of a Tall Building. Journal of Structural Engineering. 2024;150(3): 04023242. https://doi.org/10.1061/JSENDH.STENG-12599
[13] Shen J, Zhu S. Active tuned mass damper for a benchmark tall building using an energy-harvesting electromagnetic damper. Journal of Vibration Control. 2024:10775463241252215. https://doi.org/10.1177/107754632412522
[14] Hoang N, Fujino Y, Warnitchai P. Optimal tuned mass damper for seismic applications and practical design formulas. J Engineering structures. 2008;30(3):707-15. https://doi.org/10.1016/j.engstruct.2007.05.007
[15] Kang X, Huang Q, Wu Z, Tang J, Jiang X, Lei S, et al. A Review of the Tuned Mass Damper Inerter (TMDI) in Energy Harvesting and Vibration Control: Designs, Analysis and Applications. J CMES-Computer Modeling in Engineering. 2024;139(3).
https://doi.org/10.32604/cmes.2023.043936
[16] Gaur S, Elias S, Höbbel T, Matsagar VA, Thiele K. Tuned mass dampers in wind response control of wind turbine with soil-structure interaction. J Soil Dynamics Earthquake Engineering. 2020;132:106071
https://doi.org/10.1016/j. soildyn.2020.106071
[17] Nigdeli SM, Bekdaş G. Optimum tuned mass damper design in frequency domain for structures. J KSCE journal of civil engineering. 2017;21:912-22.
https://doi.org/10.1007/s12205-016-0829-2
[18] He H, Tan P, Hao L, Xu K, Xiang Y. Optimal design of tuned viscous mass damper for acceleration response control of civil structures under seismic excitations. J Engineering structures. 2022;252:113685.
https://doi.org/10.1016/j. engstruct.2021.113685
[19] Elias S, Djerouni S. Optimum tuned mass damper inerter under near-fault pulse-like ground motions of buildings including soil-structure interaction. Journal of Building Engineering. 2024;85:108674.
https://doi.org/10.1016/j.jobe. 2024.108674
[20] Cetin H, Aydin E. A new tuned mass damper design method based on transfer functions. KSCE Journal of Civil Engineering. 2019;23(10):4463-80.
https://doi.org/10.1007/s 12205-019-0305-x
[21] Sadek F, Mohraz B, Taylor AW, Chung RM. A method of estimating the parameters of tuned mass dampers for seismic applications. J Earthquake Engineering Structural Dynamics 1997; https://doi.org/10.1002/(SICI) 10969845 (199706)26:6<617::AID-EQE664>3.0.CO;2-Z
[22] Choo JF, Ha D-H, Lee D-H, Cho E-S. Improvement and Field Testing of Tuned Mass Piezo-Damper with Electricity-Generating Capacity. KSCE Journal of Civil Engineering 2022; https://doi.org/10.1007/s12205-022-0999-z
[23] Nekooei M, Ziyaeifar M, editors. Spectral investigation on the seismic behaviour of vertical mass isolated structures against earthquake. The 14th World Conference on Earthquake Engineering, 2008.
[24] Fadaie MA, Nekooei M, Mansouri M, editors. Seismic and harmonic response analysis of vertically mass isolated multi-story steel structures equipped with tuned mass dampers. Structures; 2025: Elsevier. https://doi.org/10.1016/j.istruc.2025.108690
[25] Fadaie MA, Nekooei M, Javadi P. Effect of dry and saturated bentonite on plastic concrete. J KSCE Journal of Civil Engineering. 2019;23(8):3431-42. https://doi.org/ 10.1007/s12205-019-0835-2
[26] Wang L, Nagarajaiah S, Shi W, Zhou Y. Seismic performance improvement of base-isolated structures using a semi-active tuned mass damper. J Engineering Structures. 2022;271:114963. https://doi.org/10.1016/j.engstruct.2022.114963
[27] Ferretti M, Di Egidio A. Effectiveness in protecting rigid-block-like objects through horizontal and vertical seismic isolation. J Nonlinear Dynamics. 2024;112(21): 18745-66. https://doi.org/10.1007/s11071-024-09998-7
[28] Bibi T, Ali A, Naeem A, Zhang C, Ahmad N. To investigate different parameters of economic sliding based seismic isolation system. Journal of Earthquake Engineering. 2024;28(3):659-88.
https://doi.org/10.1080/13632469.2023. 2217935
[29] Abdi MS, Nekooei M, Jafari M-A. Numerical Investigation of a New Method for Seismic Control of Structures. J KSCE Journal of Civil Engineering. 2021;25(1):162-72. https://doi.org/10.1007/s12205-020-2368-0
[30] Wu Q, Yan H, Zhu H, Bai X. Shaking table test study on the seismic isolation effect of a hybrid passive control system. J Measurement. 2020;164:108125.
https://doi.org/10.1016/j. measurement.2020.108125
[31] Council AT. Quantification of building seismic performance factors: US Department of Homeland Security, FEMA; 2009.
[32] Engineers ASoC, editor Minimum design loads and associated criteria for buildings and other structures2017: American Society of Civil Engineers.
[33] Forcellini D, editor A 3-DOF system for preliminary assessments of the interaction between base isolation (BI) technique and soil structure interaction (SSI) effects for low-rise buildings. Structures; 2024: Elsevier.
https://doi.org/10.1016/j.istruc.2023.105754
