ارزیابی عملکرد لرزه ای از توربین های بادی دریایی با استفاده از اسناد زلزله های طبیعی
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ارزیابی عملکرد لرزه ای از توربین های بادی دریایی با استفاده از اسناد زلزله های طبیعی

عنوان فارسی مقاله: ارزیابی عملکرد لرزه ای از توربین های بادی دریایی با پشتیبانی تک ستون با استفاده از اسناد زلزله های طبیعی بی مقیاس شده
عنوان انگلیسی مقاله: Seismic performance assessment of monopile-supported offshore wind turbines using unscaled natural earthquake records
مجله/کنفرانس: دینامیک خاک و مهندسی زلزله - Soil Dynamics and Earthquake Engineering
رشته های تحصیلی مرتبط: مهندسی عمران، مهندسی مکانیک
گرایش های تحصیلی مرتبط: زلزله، سازه های دریایی، تبدیل انرژی
کلمات کلیدی فارسی: توربین های بادی، عملکرد لرزه ای، زلزله های پوسته ای، زمین لرزه اسلب، زلزله رابط، تعامل سازه خاک
کلمات کلیدی انگلیسی: Wind turbines، Seismic performance، Crustal earthquakes، Inslab earthquakes، Interface earthquakes، Soil-structure interaction
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journal List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.soildyn.2018.03.015
دانشگاه: Department of Civil Engineering - Queen’s Building
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2018
ایمپکت فاکتور: 2/338 در سال 2017
شاخص H_index: 70 در سال 2019
شاخص SJR: 1/075 در سال 2017
شناسه ISSN: 0267-7261
شاخص Quartile (چارک): Q1 در سال 2017
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 19
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: بله
کد محصول: E10822
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Modeling, limit states, and analysis setup


3- Results


4- Summary and conclusions


References

نمونه متن انگلیسی مقاله

Abstract


The number of offshore wind turbine farms in seismic regions has been increasing globally. The seismic performance of steel monopile-supported wind turbines, which are the most popular among viable structural systems, has not been investigated thoroughly and more studies are needed to understand the potential vulnerability of these structures during extreme seismic events and to develop more reliable design and assessment procedures. This study investigates the structural performance assessment of a typical offshore wind turbine subjected to strong ground motions. Finite element models of an offshore wind turbine are developed and subjected to unscaled natural seismic records. For the first time, the sensitivity to earthquake types (i.e. crustal, inslab, and interface) and the influence of soil deformability and modeling details are investigated through cloud-based seismic fragility analysis. It is observed that monopile-supported offshore wind turbines are particularly vulnerable to extreme crustal and interface earthquakes, and the vulnerability increases when the structure is supported by soft soils. Moreover, a refined structural modeling is generally necessary to avoid overestimation of the seismic capacity of offshore wind turbines.


Introduction


Wind energy production from offshore wind farms is a reality nowadays around the world. Fig. 1 shows main countries that are developing and investing in offshore wind power according to the Global Wind Energy Council [1]. The same figure shows a global seismic hazard map in terms of peak ground acceleration (PGA) with probability of exceedance of 10% in 50 years [2]. Several countries are in high seismic regions, including the USA, China, India, and South East Asia, and are adjacent to subduction zones (blue lines in Fig. 1), where magnitude M9-class megathrust earthquakes can occur. This highlights that earthquake risk for newly built offshore wind farms can be potentially high and that reliable design and assessment methods for these structures against intense ground excitations need to be developed. In fact, current international standards and national codes (e.g., GL [3], DNV [4], IEC [5]) suggest considering seismic actions but without explaining in detail how to evaluate the seismic performance (e.g. suitable analysis methods). The lack of basic research that underpins codes’ requirements may be related to the limited number of wind turbines that were actually damaged during major earthquakes [6,7]. Moreover, structural damage to wind turbines was mainly reported for onshore wind turbines, thus contributing to common misperception that seismic loading is not critical for offshore wind turbine structures [8]. On the other hand, the global development of such structures in active seismic regions makes imperative to understand to which extent structural demand on offshore wind turbines is increased by earthquake loads, and whether numerical results may be affected by modeling details or by the implementation of the soil-structure interaction (SSI) that has been recognized playing a very important role on the structural performance.

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