چکیده مقاله
Topographic effects significantly influence seismic ground motion, particularly in terms of frequency content and structural response This study investigates the impact of slope topography on soil structure interaction SSI and topography soil structure interaction TSSI through numerical modeling A 15° slope and a flat ground condition were simulated using the HSS soil constitutive model under three earthquake records: Loma Prieta, Hector Mine, and Chuetsu Oki Response spectra were generated to evaluate changes in predominant periods Results indicate a fundamental natural period of 1 4 s for all three records In the flat condition SSI , the dominant periods shifted to 0 2 s for Chuetsu Oki, 0 8 s for Hector Mine, and 0 4 s for Loma Prieta These shifts demonstrate the sensitivity of frequency content to input motion and site conditions Furthermore, the findings suggest that under SSI, mid rise structures 2 8 stories are most susceptible to damage, whereas under TSSI, even high rise buildings exceeding 10 stories may be at significant risk The study highlights the necessity of incorporating topographic effects in seismic design to ensure the safety of structures located on sloping terrains
کلیدواژهها
نویسندگان
Fatemeh Mirdar
Research student, Department of Civil Engineering, Kharazmi University, Tehran, Iran
علی قنبری
Professor, Department of Civil Engineering, Kharazmi University, Tehran, Iran
شیوه ارجاع
Mirdar, Fatemeh and Ghanbari, Ali,1404,The Influence of Earthquake Input Excitation Frequency Content on Seismic Response of Slope Topography,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران