پاسخ لرزه ای غیرخطی سازه های فولادی
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پاسخ لرزه ای غیرخطی سازه های فولادی

عنوان فارسی مقاله: تأثیر برخورد بر پاسخ لرزه ای غیرخطی سازه های فولادی به هم پیوسته پیچشی مستقر در خاک انعطاف پذیر
عنوان انگلیسی مقاله: Effect of pounding on nonlinear seismic response of torsionally coupled steel structures resting on flexible soil
مجله/کنفرانس: سازه های مهندسی – Engineering Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه، خاک و پی، زلزله
کلمات کلیدی فارسی: اثر متقابل سازه و خاک، برخورد، گریز از مرکز پیچشی، پاسخ غیر خطی، ساختمان های مجاور
کلمات کلیدی انگلیسی: Soil-structure interaction، Pounding، Torsional eccentricity، Nonlinear response، Adjacent buildings
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.engstruct.2019.05.080
دانشگاه: Department of Civil Engineering, Isfahan University of Technology, Esfahan 8415683111, Iran
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 3.604 در سال 2018
شاخص H_index: 114 در سال 2019
شاخص SJR: 1.628 در سال 2018
شناسه ISSN: 0141-0296
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 20
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12427
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1. Introduction


2. Description of the building models


3. The impact element


4. Soil-structure interaction modeling


5. The ground motions


6. Nonlinear time history analyses results


7. Conclusions


References

نمونه متن انگلیسی مقاله

Abstract


The effects of earthquake induced pounding on the nonlinear response of torsionally coupled buildings resting on flexible soil are investigated in the current study. Three steel moment-resisting frame buildings with the same symmetric plan having 4, 7 and 10 stories are considered. Three-dimensional nonlinear models with different eccentricity ratios are created. The soil-structure interaction phenomenon is taken into account using the Winkler beam on nonlinear springs. The pair of adjacent structures spaced at different clear distances resting on a flexible soil are analyzed under a consistent set of ground motion records and the effects of seismic pounding, torsional eccentricity and soil-structure interaction are studied by comparison of nonlinear dynamic responses of buildings. The results show that the peripheral frames experienced the most critical conditions during earthquake-induced pounding and the combined effect of soil-structure interaction, torsional eccentricity and pounding results in the most severe nonlinear responses of the studied buildings in certain cases.


Introduction


Adjacent buildings may experience seismic pounding during strong ground motions leading to impulse force being imposed on these structures. Such an extra force can alter the design forces and performance level of structures. As the seismic pounding phenomenon is substantially complicated, the building codes just set a seismic separation distance provision to completely avoid occurrence of pounding. Many efforts have been made to clarify various aspects of the earthquake-induced impact between adjacent structures. A part of these works was devoted to develop different linear and non-linear models to simulate seismic pounding [1]. The non-linear viscoelastic model proposed by Jankowski [2] and a Hertz contact model with nonlinear damping developed by Muthukumar and Desroches [3], for instance, are the results of these researches. Soil-structure interaction and torsional eccentricity are important factors which may impress seismic response of neighboring buildings. The soil-structure interaction effect arises from transferring seismic waves between adjacent foundations which is called structure-soilstructure interaction, or SSSI. Reviewing the literature shows that oneor two-dimensional models without including torsional response and soil-structure interaction have been mainly utilized to investigate seismic pounding response of adjacent structures.

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