تحلیل خرابی پیش رونده قاب های فولادی
ترجمه نشده

تحلیل خرابی پیش رونده قاب های فولادی

عنوان فارسی مقاله: یک روش جدید برای تحلیل خرابی پیش رونده قاب های فولادی
عنوان انگلیسی مقاله: A new method for progressive collapse analysis of steel frames
مجله/کنفرانس: مجله تحقیقات فولاد ساختمانی - Journal of Constructional Steel Research
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه، مدیریت ساخت
کلمات کلیدی فارسی: قاب بندی فولادی، خرابی پیش رونده، بار انفجار، آسیب اولیه غیر صفر، تجزیه و تحلیل عنصر محدود
کلمات کلیدی انگلیسی: Steel frame، Progressive collapse، Blast load، Non-zero initial conditionInitial damage، Finite element analysis
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.jcsr.2018.09.029
دانشگاه: Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 3/171 در سال 2018
شاخص H_index: 81 در سال 2019
شاخص SJR: 1/719 در سال 2018
شناسه ISSN: 0143-974X
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 14
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: بله
آیا این مقاله مدل مفهومی دارد: دارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: دارد
کد محصول: E11452
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Finite element model of steel frame


3- Finite element model validation


4- Massive explosion scenario inside a building


5- Comparison of the existing analytical methods about progressive collapse


6- Substructure method


7- Conclusion


References

نمونه متن انگلیسی مقاله

Abstract


As a massive explosion happens inside a building, a number of structural members (columns, beams, slabs and so on) are damaged or failed, along side with non-zero initial conditions (displacement, velocity, acceleration and so on), and the progressive collapse of the building structures is most likely to occur. However, limited research works about blast load effect of structural members inside a building can be found. In view of this, based on the substructure model, a new method for progressive collapse analysis of steel frames under blast load is proposed. First, the massive explosion scenario inside a building is introduced. Then, the substructure model within effective areas of blast influence is established. After that, the calculation method of non-zero initial conditions and initial damage for structural members is given, and finally the specific steps of the proposed method are described. By way of example of a steel frame with 5 stories in height, 4 bays in the longitudinal direction, 3 bays in the transverse direction, direct simulation method, alternative load path method and proposed method are all employed to simulate the progressive collapse process, respectively. Through the example analyses, it is shown that blast load effect of structural members cannot be ignored on the ground floor, and it can be ignored on the other floors by the effect of the reinforced concrete slab. The non-zero initial conditions and initial damage of structural members can be predicted well by the substructure model, and the proposed method is also reliable and accurate.


Introduction


In recent years, with the soaring urban population and the tightening supplies of land resources, land prices are rising sharply, which provides a vast development prospect and an infinite market potential for mushroom development of super-tall buildings. High-rise civil buildings and large-scale mixed-use buildings are constantly emerging, and developing towards large-scale, complexity and diversification. In the long service life, the building structures may encounter different types of accidental disasters, such as an extremely rare earthquake, vehicle or aircraft impact, gas explosion, bomb attack, human error, fire and so on. It brings indelible potential risk to the building structures. With the constant progress of the society and the sustainable development of the economy, natural and man-made disasters that occur suddenly with great destruction emerge in endlessly. As a special type of disaster, the explosion enters into our daily life. Taking into account the peculiarity of blast load, the dynamic response characteristics and failure modes of the structural members become very complicated, especially in the case of a massive explosion inside the building. A number of structural members (columns, beams, slabs and so on) are damaged or failed, along side with non-zero initial conditions (displacement, velocity, acceleration and so on). It has become an important and hot topic, and the researchers and engineers make greater efforts in this connection.

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