دانلود رایکان مقاله انگلیسی ISI با موضوع محاسبه ضرائب افزایش بار جهت ارزیابی پتانسیل گسیختگی پیش رونده در سازه های فولادی
عنوان فارسی مقاله:
محاسبه ضرائب افزایش بار جهت ارزیابی پتانسیل گسیختگی پیش رونده در سازه های فولادی
عنوان انگلیسی مقاله:
Calculation of load increase factors for assessment of progressive collapse potential in framed steel structures
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قسمتی از مقاله انگلیسی و ترجمه آن:
Abstract
Progressive collapse of building structures is a relatively rare event. However, the consequences of progressive collapse may be catastrophic in terms of injuries and loss of lives. In addition, in many parts of the world including the United States of America, Europe, Asia, and recently, United Arab Emirates, there is a trend to build taller and more structurally complicated buildings with adventurous load paths. Therefore, structural design that takes into account the potential for progressive collapse is becoming critical. This paper outlines and discusses the process of estimating the load increase factor (LIF) needed for progressive collapse resistant design of steel building structures that takes into account the effects of component ductility on structural response following the initiation of collapse. LIF are used to account for the dynamic effects of column/wall removal when the designer opts for linear or nonlinear static analysis to assess the potential for progressive collapse. The approach recognizes the difference in response associated with deformation-controlled compared to force-controlled response quantities and structural elements. Emphasis in this paper is on the Alternate Path (AP) approach which is the most commonly used approaches for progressive collapse resistant design of building structure that fall under Occupancy Category II.
چکیده
گسیختگی پیش رونده سازه ها به عنوان یک پدیده کمیاب که به ندرت رخ می دهد ، شناخته می شود. با این حال ، پیامدهای وقوع گسیختگی پیش رونده به دلیل وقوع جراحات و از دست رفتن جان انسان ها ، می تواند فاجعه بار باشد. علاوه براین در برخی از قسمت های جهان از جمله آمریکا ، اروپا ، آسیا و اخیرا امارات متحده عربی ، تمایل به ساختن سازه های بلنده تر و از نظر سازه ای پیچیده تر با جهت های بارگذاری پر حادثه به چشم می خورد. از این رو ، طراحی سازه ای که پتانسیل وقوع گسیختگی پیش رونده را در نظر می گیرد ، حائز اهمیت زیادی می باشد. این مقاله به بحث و بررسی در مورد فرآیند برآورد ضریب افزایش بار (LIF) مورد نیاز جهت طرح مقاومت گسیختگی پیش رونده سازه های فولادی که اثرات شکل پذیری مولفه ای پاسخ سازه را با شروع گسیختگی در نظر می گیرد ، می پردازد. از LIF ها جهت در نظر گرفتن اثرات دینامیکی حذف دیوار / ستون هنگامی که طراح تحلیل استاتیکی خطی یا غیر خطی را جهت ارزیابی پتانسیل گسیختگی پیش رونده در نظر می گیرد ، استفاده می شود. این روش به بررسی تفاوت در پاسخ تغییرشکل های کنترل شده در مقایسه با کمیت های پاسخ نیروی کنترل شده و المان های سازه ای می پردازد. تمرکز و تاکید این مقاله در مورد روش مسیر جایگزین (متناوب) (AP) می باشد که به وفور جهت طراحی مقاومت گسیختگی پیش رونده سازه ها که در زمره دسته II قرار می گیرند ، مورد استفاده قرار می گیرد.
کلمات کلیدی
Calculation of load increase factors for assessment of progressive ... https://www.sciencedirect.com/science/article/pii/S221439981500003X by OA Mohamed - 2015 - Cited by 14 - Related articles Assessment of the potential for progressive collapse of a building structure .... The load increase factor for force-controlled actions in framed steel structures is ... [PDF]Calculation of load increase factors for assessment of progressive ... iranarze.ir/wp-content/uploads/2017/08/7360-English-IranArze.pdf Jan 29, 2015 - Calculation of load increase factors for assessment of progressive collapse potential in framed steel structures. Osama Ahmed Mohamed. Calculation of load increase factors for assessment of progressive ... https://www.researchgate.net/.../271601489_Calculation_of_load_increase_factors_for_... Jul 31, 2018 - PDF | Progressive collapse of building structures is a relatively rare event. ... of progressive collapse potential in framed steel structures. [PDF]Research Article Assessment the Behavior of Seismic Designed Steel ... maxwellsci.com/msproof.php?doi=rjaset.7.508 progressive collapse potential of structures have been published by the General ... this study, new load increase factors were introduced and an alternative ... Pulldown Analysis for Progressive Collapse Assessment | Journal of ... https://ascelibrary.org/doi/full/10.1061/%28ASCE%29CF.1943-5509.0000459?src... Unlike the pushdown analysis where gravity loads within the affected bays of a ... Results from progressive collapse assessment of the example frame using the ... To this end, a so-called dynamic increase factor (DIF) is usually used in the ..... An over-strength factor of 1.1 is used to calculate the expected value of steel ... [PDF]experimental and analytical assessment on the progressive collapse ... citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.878.2609&rep=rep1... by H Adeli - 2010 - Cited by 13 - Related articles ABSTRACT. Progressive collapse has been of an increasing concern in the structural ... 3-D models. The amplification factor of 2 required for the dead load in linear static ... Analytical Assessment on Progressive Collapse Potential of Actual Steel Frame. Buildings. .... 6.3.2 Comparison of Calculated and Measured Strains … Nonlinear Progressive Collapse Analysis Including Distributed Plasticity https://www.matec-conferences.org/articles/.../pdf/.../matecconf_iccmp2016_07003.pdf by OA Mohamed - 2016 - Related articles Progressive collapse of building structures is not covered extensively in ... incorporated using load increase factors. Linear analysis ... the potential for progressive collapse of steel framed structures and ... Dynamic increase factor for calculating ... Progressive collapse assessment using the alternate path method and LSA ... [PDF]Assessment of Eccentrically Braced Frames Strength Against ... facultystaff.urmia.ac.ir/HandlerJournal.ashx?CVID=102854&STID=314&file... Jun 30, 2017 - Keywords: progressive collapse, eccentrically braced steel frames ... collapse potential decreased as the number of stories ... models used seismic resistant frame around the building, ... of dynamic load increase factor of ΩN in increased gravity ... increase factor is calculated using the following equation. Progressive collapse analysis methods due to blast loading in steel ... modelling.journals.semnan.ac.ir/article_2688_en.html [16] Osama Ahmed Mohamed,(2015), Calculation of load increase factors for assessment of progressive collapse potential in framed steel structures Case ... [PDF]Assessment of Progressive Collapse Capacity of ... - Semantic Scholar https://pdfs.semanticscholar.org/d267/f74e0b4a34d1883eeb4bd274ec046b841330.pdf by M Ferraioli - 2014 - Cited by 11 - Related articles number of stories, number of bays, level of seismic design load, ... factor to be applied in pushdown analysis for a more accurate estimation of the collapse ... Keywords: Nonlinear pushdown analysis, progressive collapse, steel ... lapse assessment of steel-framed buildings. ... sive collapse potential of steel moment frames.
