دانلود رایگان مقاله انگلیسی رفتار لرزه ای فریم های فولادی مهاربندی شده تحت توالی های لرزه ای نرم-خاک - الزویر 2018

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عنوان فارسی

رفتار لرزه ای فریم های فولادی مهاربندی شده تحت توالی های لرزه ای نرم-خاک

عنوان انگلیسی

Seismic behavior of steel eccentrically braced frames under soft-soil seismic sequences

صفحات مقاله فارسی

0

صفحات مقاله انگلیسی

10

سال انتشار

2018

نشریه

الزویر - Elsevier

فرمت مقاله انگلیسی

PDF

نوع مقاله

ISI

نوع نگارش

مقالات پژوهشی (تحقیقاتی)

رفرنس

دارد

پایگاه

اسکوپوس

کد محصول

E10819

رشته های مرتبط با این مقاله

مهندسی عمران

گرایش های مرتبط با این مقاله

زلزله، ژئوتکنیک

مجله

دینامیک خاک و مهندسی زلزله - Soil Dynamics and Earthquake Engineering

دانشگاه

Facultad de Ingeniería Civil - Universidad Michoacana de San Nicolás de Hidalgo - Mexico

کلمات کلیدی

قاب مهاربندی شده برون محور، خاک نرم، چرخش لینک، توالی لرزه ای، پس لرزه ها

doi یا شناسه دیجیتال

https://doi.org/10.1016/j.soildyn.2018.08.018

برای سفارش ترجمه این مقاله با کیفیت عالی و در کوتاه ترین زمان ممکن توسط مترجمین مجرب سایت ایران عرضه؛ روی دکمه سبز رنگ کلیک نمایید.

چکیده

ABSTRACT

The goal of this paper is to examine the seismic response of eccentrically braced frames (EBFs) under artificial narrow-band mainshock-aftershock sequences by means of detailed analytical models representative of buildings designed under the Mexico City Code criteria. These analytical models take into account the nonlinear behavior of the links including a failure criterion. Relevant results for engineering practice showed that strong aftershocks could significantly increase interstory drift demands once the link fails, while surrounding members (adjacent beams, columns) behave nonlinearly, which is opposite to the design philosophy. In addition, it was noted the nonuniform distribution of hysteretic energy along-height of the links, which do not take fully advantage of the energy dissipating capacity of the shear links.

نتیجه گیری

Summary and conclusions

This paper examined the seismic behavior of two steel eccentrically braced frames (EBF) assumed to be located at a soft soil site in Mexico City. The EBFs were designed to satisfy the lateral strength and stiffness requirements of the 2004 Edition of the Technical Requirements for Seismic Design prescribed in the Mexico City Building Construction Code. The analytical models of the EBFs, beams, columns, and braces were modeled using a distributed plasticity approach, while the links were modeled using a modeling strategy that simulate shear plastic hinges. In addition, the hysteretic response of the links considered a failure criterion (i.e. the links exhaust their shear capacity when an inelastic plastic rotation equal to 0.06 rad is reached during cyclic loading), which is consistent with its experimental response. Due to the scarcity of enough recorded mainshock-aftershock sequences at soft soil sites, three sets of artificial sequences with different intensity ratio, VA/ VM (i.e. ratio of the intensity of the aftershock with respect to the mainshock, considering that the mainshocks are scaled to reach the highest PGV recorded during the September 19, 1985 earthquake in Mexico City) were generated as part of this study.

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