جستجو در تالار
در حال نمایش نتایج برای برچسب های 'directivity effect'.
Evaluation of near‑fault effects on the general code spectrum of the Iranian code of practice for seismic‑resistant design of buildings, case study: Tehran Javad Jalili · Majid Mahood · Ali Shafiee Received: 27 April 2022 / Accepted: 29 September 2022 / Published online: 2 November 2022 © The Author(s), under exclusive licence to Springer Nature B.V. 2022 Abstract Thispaper aims to evaluate the general code spectrum of the Iranian code of practice for seismicresistant design of buildings. The general code spectrum at nine sites with different site classes within the mega city of Tehran is compared with those of ASCE 7–16 and a site-specific design spectrum. It is shown that though the general code spectrum offered by the Iranian code captures far-field site spectra, it cannot address the motion on the bedrock for some of the nearfault sites and thus may not be conservative for nearfault sites of classes B and C. Consideration of proper near-fault correction factors would make the general code spectrum more conservative, as shown via the case study in this paper. The base acceleration on bedrock of the Iranian code is recommended to be a function of the site-to-source distance. In line with ASCE7–16, the base acceleration can be defined for a short and long period, being adjusted for directivity effects. منبع : [Hidden Content] دانلود: [Hidden Content]