Major Parameters Affect the Non-Liner Response of Structure Under Near-Fault Earthquakes
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Near-fault ground motion can be identified by the presence of a predominant long duration pulse in the velocity traces mainly due to directivity effect. This pulse exposes the structure to high input energy at the beginning of the earthquake which leads to a higher response in comparison with the ordinary ground motions. This paper investigates 79 earthquake records with different properties to achieve three goals: the first aim is to compare between the linear and nonlinear response of SDOF systems under near-fault and far-fault earthquakes. While the second objective is to examine the parameters that control the characteristics of near-fault earthquakes. Two factors have been studied which is PGV/PGA ratio and pulse period. Finally, the seismic code provisions related to the near-fault earthquakes were evaluated in term of the elastic acceleration response spectrum, the evaluation is adopted for American Society of Civil Engineers code ASCE 7 and Uniform Building Code UBC. The results lead to the following conclusions: with respect to a specific PGA, the near-fault earthquake imposed higher response in comparison with far-field earthquakes. The near-fault earthquakes become severe as the PGV/PGA and pulse period increase. The interested seismic codes can cover the actual behavior based on the average response of a certain amount of data, while it may become non-conservative relative to an individual record.
[2] Abrahamson N.A., Incorporating effects of near fault tectonic deformation into design ground motions, presentation sponsored by the Earthquake Engineering Research Institute Visiting Professional Program, hosted by the University at Buffalo, 2001.
[3] Chopra, Anil K., and Chatpan Chintanapakdee. "Comparing Response of SDF Systems to Near-Fault and Far-Fault Earthquake Motions in the Context of Spectral Regions.” Earthquake Engineering & Structural Dynamics 30, no. 12 (2001): 1769–1789. doi:10.1002/eqe.92.
[4] Alavi, Babak, and Helmut Krawinkler. "Behavior of Moment-Resisting Frame Structures Subjected to Near-Fault Ground Motions.” Earthquake Engineering & Structural Dynamics 33, no. 6 (April 15, 2004): 687–706. doi:10.1002/eqe.369.
[5] Heydari, Mahdi, and Mahdi Mousavi. "The Comparison of Seismic Effects of Near-Field and Far-Field Earthquakes on Relative Displacement of Seven-Storey Concrete Building with Shear Wall.” Current World Environment 10, no. Special-Issue1 (June 28, 2015): 40–46. doi:10.12944/cwe.10.special-issue1.07.
[6] Alhan, Cenk, and Melih Sürmeli. "Necessity and Adequacy of Near-Source Factors for Not-so-Tall Fixed-Base Buildings.” Earthquake Engineering and Engineering Vibration 14, no. 1 (February 20, 2015): 13–26. doi:10.1007/s11803-015-0003-8.
[7] Hosseini, Mahmood, Banafshehalsadat Hashemi, and Zahra Safi. "Seismic Design Evaluation of Reinforced Concrete Buildings for Near-Source Earthquakes by Using Nonlinear Time History Analyses.” Procedia Engineering 199 (2017): 176–181. doi:10.1016/j.proeng.2017.09.225.
[8] Talebi Jouneghani, Kourosh, Mahmood Hosseini, Mohammad Sadegh Rohanimanesh, and Morteza Raissi Dehkordi. "Evaluating Main Parameters Effects of Near-Field Earthquakes on the Behavior of Concrete Structures with Moment Frame System.” Advances in Science and Technology Research Journal 11, no. 3 (September 3, 2017): 10–23. doi:10.12913/22998624/74135.
[9] Kohrangi, Mohsen, Dimitrios Vamvatsikos, and Paolo Bazzurro. "Pulse-Like Versus Non-Pulse-Like Ground Motion Records: Spectral Shape Comparisons and Record Selection Strategies.” Earthquake Engineering & Structural Dynamics 48, no. 1 (September 26, 2018): 46–64. doi:10.1002/eqe.3122.
[10] Pacific Earthquake Engineering Research Center (PEER), Strong Motion Database, http://peer.berkeley.edu Accessed on (September 2018).
[11] California Geological Survey-Strong Motion Instrumentation Program (CGS-SMIP) and (PEER), Technical Report for the PEER Ground Motion Database, beta version, October 2010.
[12] Chopra, Anil K. Dynamics of structures: theory and applications to earthquake engineering. Prentice Hall, 1995. doi:10.1061/(asce)0733-9445(2007)133:5(752).
[13] Liao, Wen-I, Chin-Hsiung Loh, and Shiuan Wan. "Earthquake Responses of RC Moment Frames Subjected to Near-Fault Ground Motions.” The Structural Design of Tall Buildings 10, no. 3 (2001): 219–229. doi:10.1002/tal.178.
[14] American Society of Civil Engineers, Minimum Design Loads for Buildings and Other Structures (ASCE/SEI 7-10), 2010.
[15] International Conference of Building Officials, Uniform Building Code, Whittier, California, 1997.
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