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بررسی تاثیر استفاده از سیستم جداساز لرزه ای به منظور بهبود رفتار ساختمان های بتنی با درجه اهمیت خیلی زیاد و دارای سیستم مقاوم باربر جانبی دوگانه | ||
پدافند غیرعامل | ||
دوره 15، شماره 1 - شماره پیاپی 57، اردیبهشت 1403، صفحه 61-72 اصل مقاله (1.54 M) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسنده | ||
علی کچوئی* | ||
استادیار دانشکده علوم و فنون منابع سازمانی دانشگاه جامع علوم انتظامی امین، تهران، ایران | ||
تاریخ دریافت: 09 مهر 1402، تاریخ بازنگری: 29 آبان 1402، تاریخ پذیرش: 08 بهمن 1402 | ||
چکیده | ||
سامانه جداساز لرزهای به لحاظ عملکردی، یکی از بهترین سامانههای مقاوم باربر جانبی در ساختمانهای بتنی میباشد. استفاده از جداساز لرزهای در سازه، باعث افزایش شکلپذیری، جذب انرژی بالا و همچنین بهبود پایداری کل سازه می شود. برابر آیین نامه 2800، ساختمانهای مورد استفاده در اماکن نظامی و انتظامی جزء ساختمانهای با اهمیت خیلی زیاد به حساب میآیند. لذا برابر اصول پدافندی، عدم خرابی این سازهها و قابلیت بهرهبرداری از آنها پس از وقوع زلزلههای شدید، مهم و حیاتی است. به همین خاطر، در این مطالعه، رفتار سازهای یک ساختمان با کاربری انتظامی، با لحاظ کردن جداساز لرزهای لاستیکی با پلیمرهای تقویت شده با فیبر (FRP) در آن، بهمنظور بررسی بهبود عملکرد لرزهای و جلوگیری از تخریب سازه پس از زلزله، بررسی شده است. این سازه تحت تحلیلهای استاتیکی غیرخطی(پوش اور)، دینامیکی غیرخطی، دینامیکی غیرخطی افزاینده (IDA) قرار گرفته است. سپس منحنی شکنندگی حاصل از این تحلیلها برای سازه مورد نظظر استخراج و مورد بررسی قرار گرفته است. نتایج شاخصهای رفتار لرزهای سازهای به دست آمده از تحلیلهای پوشآور، تاریخچه زمانی، IDA و منحنی شکنندگی؛ بیانگر آن است که سازه جداسازی شده داری تغییرمکان جانبی نسبی کمتر نسبت به همان سازه بدون جداساز بوده است. همچنین پایداری، ظرفیت و برش پایه سازه جداسازی شده بهتر از سازه بدون جداساز میباشد. بهطور کلی برای سازههای مجهز به جداساز لرزهای، احتمال گذشتن آنها از هر سطح عملکرد نسبت به سازههای بدون جداساز، دیرتر رخ میدهد. | ||
کلیدواژهها | ||
تحلیل استاتیکی غیرخطی؛ تحلیل دینامیکی غیرخطی؛ تحلیل دینامیکی غیرخطی افزاینده؛ منحنی شکست؛ جداساز لرزهای لاستیکی با الیاف FRP | ||
مراجع | ||
[1] J. M. Kelly and F. Naeam, “Design of Seismic Isolated Structures: From Theory of Practice,” John Wiley & Sons, New York, 1999. [2] F. Naeim, “Design of seismic isolated structures: from theory to practice,” John Wiley & Sons, 1999. [3] S. Mahin, V. Bertero, A. Chopra and R. Collins, “Response of the Olive View Hospital Main Building During the San Fernando Earthquake”, Earthquake Engineering Research Center, University of California, 1979. [4] A. Chopra and R. K. Goel, “A modal Pushover Procedure to estimate seismic demands for buildings, Summery and evaluation ,“ fifth National conference on Earthquake, Istanbul,Turkey, 2003. [5] S. Bahrami and A. A. Puri Rahim, “Technical investigation of precast concrete defense headquarters resistant to blast loads,” Passive Defense J., vol. 5, pp. 15-25, 2023. DOR: 20.1001.1.20086849.1402.14.3.2.6 (In Persian) [6] M. Razmand and M. Kamali, “Investigating the seismic performance of basic seismic isolators for concrete buildings with irregular plans,” 10th National Congress of Civil Engineering, 2014. (In Persian) [7] R. Hoseini Vaez, H. Naderpour and R. Carneiro Barros, “ Influence of equivalent pulses of near fault ground motions on base-isolated RC structures” Proceedings of the 9th International Conference on Structural Dynamics, EURODYN, 2015. [8] R.J. Williams, P. Gardoni and J.M. Bracci, “Decision analysis for seismic retro_t of structures,” Struct. Saf., vol. 31(2), pp. 188-196, 2009. https://doi.org/10.1016/j.strusafe.2008.06.017 [9] C. M. Hutt, I. Almufti, M. Willford and et al., “Seismic loss and downtime assessment of existing tall steelframed buildings and strategies for increased resilience,” J. Struct. Eng., vol. 142(8), pp. 12, 2016. 10.1061/(ASCE)ST.1943-541X.0001314
[1] J. M. Kelly and F. Naeam, “Design of Seismic Isolated Structures: From Theory of Practice,” John Wiley & Sons, New York, 1999. [2] F. Naeim, “Design of seismic isolated structures: from theory to practice,” John Wiley & Sons, 1999. [3] S. Mahin, V. Bertero, A. Chopra and R. Collins, “Response of the Olive View Hospital Main Building During the San Fernando Earthquake”, Earthquake Engineering Research Center, University of California, 1979. [4] A. Chopra and R. K. Goel, “A modal Pushover Procedure to estimate seismic demands for buildings, Summery and evaluation ,“ fifth National conference on Earthquake, Istanbul,Turkey, 2003. [5] S. Bahrami and A. A. Puri Rahim, “Technical investigation of precast concrete defense headquarters resistant to blast loads,” Passive Defense J., vol. 5, pp. 15-25, 2023. DOR: 20.1001.1.20086849.1402.14.3.2.6 (In Persian) [6] M. Razmand and M. Kamali, “Investigating the seismic performance of basic seismic isolators for concrete buildings with irregular plans,” 10th National Congress of Civil Engineering, 2014. (In Persian) [7] R. Hoseini Vaez, H. Naderpour and R. Carneiro Barros, “ Influence of equivalent pulses of near fault ground motions on base-isolated RC structures” Proceedings of the 9th International Conference on Structural Dynamics, EURODYN, 2015. [8] R.J. Williams, P. Gardoni and J.M. Bracci, “Decision analysis for seismic retro_t of structures,” Struct. Saf., vol. 31(2), pp. 188-196, 2009. https://doi.org/10.1016/j.strusafe.2008.06.017 [9] C. M. Hutt, I. Almufti, M. Willford and et al., “Seismic loss and downtime assessment of existing tall steelframed buildings and strategies for increased resilience,” J. Struct. Eng., vol. 142(8), pp. 12, 2016. 10.1061/(ASCE)ST.1943-541X.0001314 [10] Road, Housing and Urban Development Research Center, “" Regulations for the design of buildings against earthquakes,” 4th edition, 2019. (In Persian) [11] Ministry of Roads and Urban Development, Housing and Building Research Center, “National building regulations of Iran, topic 9, design and implementation of reinforced concrete buildings,” 4th edition, 2014. (In Persian) [12] Ministry of Roads and Urban Development, Housing and Building Research Center, “Iran's national building regulations, the sixth topic of loads on the building,” 3rd edition, 2014. (In Persian) [13] Road, Housing and Urban Development Research Center, “Publication 523, a guide to the design and implementation of seismic isolation systems in buildings,” 1st edition, 2019. [14] A. A. Aghakuchak, Gh. Dehghani Ashkzari and M. Kokabi, “Laboratory investigation of the performance of fiber-reinforced elastometer seismic isolators,” Technical Faculty of Tehran University J., vol. 41(6), pp.739, 2007.https://sid.ir/paper/14095/fa (In Persian) [15] Country Management and Planning Organization, Vice President of Technical Affairs, Office of Technical Affairs, compilation of criteria and reduction of vulnerability caused by earthquakes, “Publication 360, guidelines for seismic improvement of existing buildings,” 2006. [16] American Society of Civil Engineers ,“Fema 356 : Prestandard and Commentary for the Seismic Rehabilitation of Buildings in Rehabilitation Requirements,”, Washington, DC, USA, 2000. [17] M. Yasin, “Seismic Behavior of X-Braced Frames with Lower Grade Steel by using Fragility Curves under Near-Field Earthquakes”, Master's thesis, Bomehen Azad Univ., 2020. [18] S. Mahin, V. Bertero, A. Chopra and R. Collins, R., “Response of the Olive View Hospital Main Building During the San Fernando Earthquake”, Earthquake Engineering Research Center, University of California,1979. [19] K. K. Yadav, V. K. Gupta., “Near-fault fling-step ground motions: characteristics and simulation”, Soil Dyn Earthq Eng vol. 101 pp. 90 -104, 2017. 10.1016/j.soildyn.2017.06.022 [20] H. Moghadam, “Earthquake engineering, basics and application,” 4th edition, Tehran, Farhang, 2007. (In Persian) [21] Federal Emergency Management Agency (FEMA), “P 695 Quantification of Building Seismic Performance Factors”,Washington, D.C., USA, 2009. [22] Niknam, Ahmadi , and Mahdavi, “Identity Studies in Seismic Structure of Structures”, 5th National Congress of Civil Engineering, University of Mashhad, Iran, 2010. [23] Niknam, Khorrami, and Motahar, “Study of IDA performance in seismic evaluation of special steel bending frames”, Semnan University, Iran, 2011. [24] Department of Homeland security Emergrncy preparedness and Response Directorate mitigation, “HUZUS”, Division Washington,D.C. 2003. [25] H. Kazemi, M . Ghafory-Ashtiany, and A. Azarbakht, “Effect of Epsilon-based Record Selection on Fragility Curves of Typical Irregular Steel Frames with Concrete Shear Walls in Mashhad City", IJASE, vol. 5, pp.1-11, 2013. http://www.advancedstructeng.com/content/5/1/23 [10] Road, Housing and Urban Development Research Center, “" Regulations for the design of buildings against earthquakes,” 4th edition, 2019. (In Persian) [11] Ministry of Roads and Urban Development, Housing and Building Research Center, “National building regulations of Iran, topic 9, design and implementation of reinforced concrete buildings,” 4th edition, 2014. (In Persian) [12] Ministry of Roads and Urban Development, Housing and Building Research Center, “Iran's national building regulations, the sixth topic of loads on the building,” 3rd edition, 2014. (In Persian) [13] Road, Housing and Urban Development Research Center, “Publication 523, a guide to the design and implementation of seismic isolation systems in buildings,” 1st edition, 2019. [14] A. A. Aghakuchak, Gh. Dehghani Ashkzari and M. Kokabi, “Laboratory investigation of the performance of fiber-reinforced elastometer seismic isolators,” Technical Faculty of Tehran University J., vol. 41(6), pp.739, 2007.https://sid.ir/paper/14095/fa (In Persian) [15] Country Management and Planning Organization, Vice President of Technical Affairs, Office of Technical Affairs, compilation of criteria and reduction of vulnerability caused by earthquakes, “Publication 360, guidelines for seismic improvement of existing buildings,” 2006. [16] American Society of Civil Engineers ,“Fema 356 : Prestandard and Commentary for the Seismic Rehabilitation of Buildings in Rehabilitation Requirements,”, Washington, DC, USA, 2000. [17] M. Yasin, “Seismic Behavior of X-Braced Frames with Lower Grade Steel by using Fragility Curves under Near-Field Earthquakes”, Master's thesis, Bomehen Azad Univ., 2020. [18] S. Mahin, V. Bertero, A. Chopra and R. Collins, R., “Response of the Olive View Hospital Main Building During the San Fernando Earthquake”, Earthquake Engineering Research Center, University of California,1979. [19] K. K. Yadav, V. K. Gupta., “Near-fault fling-step ground motions: characteristics and simulation”, Soil Dyn Earthq Eng vol. 101 pp. 90 -104, 2017. 10.1016/j.soildyn.2017.06.022 [20] H. Moghadam, “Earthquake engineering, basics and application,” 4th edition, Tehran, Farhang, 2007. (In Persian) [21] Federal Emergency Management Agency (FEMA), “P 695 Quantification of Building Seismic Performance Factors”,Washington, D.C., USA, 2009. [22] Niknam, Ahmadi , and Mahdavi, “Identity Studies in Seismic Structure of Structures”, 5th National Congress of Civil Engineering, University of Mashhad, Iran, 2010. [23] Niknam, Khorrami, and Motahar, “Study of IDA performance in seismic evaluation of special steel bending frames”, Semnan University, Iran, 2011. [24] Department of Homeland security Emergrncy preparedness and Response Directorate mitigation, “HUZUS”, Division Washington,D.C. 2003. [25] H. Kazemi, M . Ghafory-Ashtiany, and A. Azarbakht, “Effect of Epsilon-based Record Selection on Fragility Curves of Typical Irregular Steel Frames with Concrete Shear Walls in Mashhad City", IJASE, vol. 5, pp.1-11, 2013. http://www.advancedstructeng.com/content/5/1/23 | ||
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