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Firoozbakht, Mehdi, edalati, aliakbar. (1402). Investigating the effect of increasing the height of bridge piers on seismic behavior of isolation systems in urban bridges (A case study on the Hesarak Bridge). نشریه علمی پژوهشی دانشگاه آزاد اسلامی, (), -. doi: 10.30495/ijase.2023.1996021.1080
Mehdi Firoozbakht; aliakbar edalati. "Investigating the effect of increasing the height of bridge piers on seismic behavior of isolation systems in urban bridges (A case study on the Hesarak Bridge)". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, , , 1402, -. doi: 10.30495/ijase.2023.1996021.1080
Firoozbakht, Mehdi, edalati, aliakbar. (1402). 'Investigating the effect of increasing the height of bridge piers on seismic behavior of isolation systems in urban bridges (A case study on the Hesarak Bridge)', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, (), pp. -. doi: 10.30495/ijase.2023.1996021.1080
Firoozbakht, Mehdi, edalati, aliakbar. Investigating the effect of increasing the height of bridge piers on seismic behavior of isolation systems in urban bridges (A case study on the Hesarak Bridge). نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1402; (): -. doi: 10.30495/ijase.2023.1996021.1080

Investigating the effect of increasing the height of bridge piers on seismic behavior of isolation systems in urban bridges (A case study on the Hesarak Bridge)

International Journal of Advanced Structural Engineering
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 22 شهریور 1402
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30495/ijase.2023.1996021.1080
نویسندگان
Mehdi Firoozbakht* 1؛ aliakbar edalati2
1Department of Civil Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran
2Civil Organization, Municipality of Karaj, Karaj, Iran
چکیده
Bridges are vital to modern transportation infrastructure, providing convenient and efficient access to different locations. Because of their structural simplicity and low degree of indeterminacy, bridges tend to be particularly vulnerable to damage and even collapse when subjected to earthquakes. The costs of their construction and retrofitting are high, so the maintenance of these capitals is one of the necessities of urban management. This paper investigates the influence of increasing the height of bridge piers on seismic behavior of isolation systems in urban reinforce concrete (RC) bridge. For this purpose, the seismic performance of the Hesarak Bridge constructed in Karaj city, Iran with two isolation systems; i.e. the existing elastomeric rubber bearing (ERB) and a proposed lead rubber bearing (LRB) are discussed by changing three times the height the bridge piers as compared with the existing situation. The numerical model was implemented in the well-known FEM software CSiBridge. The isolated bridge has been analyzed using nonlinear time history analysis (NTHA) method with seven pairs of earthquake records and the results are compared for the two isolation systems in both height modes. The results showed that with the increase in the height of the bridge piers, the natural period of the LRB isolated system changes from 2.7 to 2.77 seconds and on the other hand, this value increases from 1.37 to 1.62 in the ERB isolated system. The ratio of maximum base shear force for the bridge with the LRB to the ERB isolators under given ground motions ...
کلیدواژه‌ها
Keywords: RC؛ Bridge؛ ERB؛ LRB؛ NTHA
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تعداد مشاهده مقاله: 9


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