تحلیل حساسیت خرابی پیشرونده در قاب های خمشی و مهاربندی شده ی هم محور فولادی با پلان های مستطیلی و L شکل

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری سازه، دانشکده مهندسی عمران، دانشگاه سمنان.

2 دانشیار، دانشکده مهندسی عمران، دانشگاه سمنان.

10.22091/cer.2020.5767.1208

چکیده

پدیده خرابی پیش‌رونده به‌دلیل اینکه می‌تواند پایداری کل سازه و ایمنی جانی ساکنین آن را تهدید نماید، طی چند سال اخیر، مورد توجه محافل علمی قرار گرفته است. در خرابی پیش‌رونده تعیین المان کلیدی که بیشترین پتانسیل ایجاد خرابی را دارد، اهمیت زیادی دارد. چهار مدل سازه فولادی با دو سیستم سازه‌ای قاب خمشی و دوگانه مهاربندی شده با پلان‌های مستطیلی و L شکل تحلیل حساسیت شده است. براساس تحلیل فزاینده قائم، در سیستم قاب خمشی فولادی با پلان‌های مستطیلی و L شکل و در سیستم دوگانه با مهاربندهای میانی، ستون‌های گوشه و در سیستم دوگانه (مهاربندهای میانی و کناری) با پلان مستطیلی و در سیستم دوگانه (مهاربندهای کناری) با پلان L شکل، ستون داخلی بیشترین پتانسیل خرابی را دارد. نتایج تحقیق نشان می‌دهد سازه‌های بلند، عملکرد بهتری در برابر خرابی پیش‌رونده داشته و افزایش ارتفاع مدل‌ها در سیستم دوگانه، تأثیر زیادی در کاهش خرابی پیش‌رونده ندارد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Sensitivity Analysis of Progressive Collapse in Steel Moment Frames and Braced Rectangular and L-Shaped Plan

نویسندگان [English]

  • Hamze Rouhi 1
  • Majid Gholhaki 2
1 Ph.D student, Faculty of Civil Engineering, Semnan University.
2 Associate Professor, Faculty of Civil Engineering, Semnan University.
چکیده [English]

The progressive collapse because it can be sustained the whole structure and the safety of the lives of residents threatens that has been the focus of scientific circles over the past few years. In the progressive collapse determining the key element that most potential for failure is of great importance. Four structural steel structures with two frames and dual systems are sensitivity analyzed with two structural systems in rectangular and L- shaped planes. Based on the results of the pushdown analysis in steel moment frame with rectangular and L-shaped planes and the dual system with middle braces, the corners column and the dual system (middle and corner braces) with a rectangular plan and in the dual system (corner braces) with the L- plan the internal column has the most potential for collapse. The results show that higher-heightened structures have a better performance against progressive collapse, and the increase in the height of the models in the dual system does not have much effect on reducing progressive collapse.

کلیدواژه‌ها [English]

  • Progressive collapse
  • Push down analysis
  • Sensitivity analysis
  • Key element

مراجع

[1] The U. S. General Service Administrations (GSA). (2003). “Progressive collapse analysis and design guide-lines for new federal office buildings and major modernization projects’’, Washington, DC.
[2] DoD (Department of Defense). (2009). Design of buildings to resist progressive collapse. Unified Facilities Criteria (UFC) 4-023-03.
[3] Astaneh-Asl, A. (2003). “Progressive collapse prevention in new and existing buildings’’, Paper presented at the proceedings, 9th Arab structural engineering conference, United Arab Emirates (UAE).
[4] Astaneh-Asl, A., Jones, B., Zhao, Y., & Hwa, R. (2001). “Progressive collapse resistance of steel building floors’’, Report Number UCB/CEE-Steel-2001, 3.
[5] Mehrabi, F., Kheiroddin, A., & Gerami, M. (2012). “Asseassment of Progressive Collapse Potential of Steel Structures that are Desinged on Irananian Code’’, Sharif Journal of Civil Engineering, 2-28(4), 65-72.
[6] Mashhadiali, N., & Kheyroddin, A. (2014). “Progressive collapse assessment of new hexagrid structural sys-tem for tall buildings’’, The Structural Design of Tall and Special Buildings, 23(12), 947-961.
[7] Kim, J., & Hong, S. (2011). “Progressive collapse performance of irregular buildings’’, The Structural Design of Tall Special Buildings, 20(6), 721-734.
[8] Frangopol, D. M., & Curley, J. P. (1987). “Effects of damage and redundancy on structural reliability’’, Journal of structural engineering, 113(7), 1533-1549.
[9] Ito, T., Ohi, K., & Li, Z. (2005). “A sensitivity analysis related to redundancy of framed structures subjected to vertical loads’’, Journal of structural and construction engineering, Transactions of AIJ, (593), 145-151.
[10] Kim, J., & An, D. (2009). “Evaluation of progressive collapse potential of steel moment frames considering catenary action’’, The structural design of tall and special buildings, 18(4), 455-465.
[11] Ito, T., & Fukuyama, T. (2011). “A Potential Strength and Ultimate Behavior of Framed Structures Con-sidering Catenary Effects after Failure Mechanism Formation Subjected to Vertical Load’’, Theoretical and Applied Mechanics Japan, 59, 29-38.
[12] Choi, J. H., Ito, M., & Ohi, K. (2007). “Prevention of Building Structural Collapse Caused by Accidental Events’’, In proc. Of 2nd International Symposium on Improvement of Structural Safety for Building Struc-tures 85-98.
[13] Kwon, K., Park, S., & Kim, J. (2012). “Evaluation of progressive collapse resisting capacity of tall build-ings’’, International Journal of High-Rise Buildings, 1(3), 229-235.
[14] Ito, T., & Takemura, T. (2014). “Sensitivity Analysis of Redundancy of Regular and Irregular Framed’’, International Journal of High-Rise Buildings, 3(4), 297–304.
[15] Maddahi, M., & Kheyroddin, A. (2016). “Assessment of the progressive collapse in the steel moment frames with L-shaped plan using sensitivity analysis’’, Journal of Structural and Construction Engineering, 3(2), 73-85.
[16] Hashemi, S. SH., Khosravi, R., Fiouz, A. (2018). “Progressive collapse evaluation of RC structures with Bubble Deck floor system’’, Modares Civil Engineering Journal, 18(3), 101-111.
[17] Rouhi, H., & Kheyroddin, A. (2018). “Progressive collapse analysis of reinforced concrete in buildings L-shaped plan’’, Journal of Structural and Construction Engineering, 5(3), 44-65.
[18] Mohamed, O. A. (2015). “Calculation of load increase factors for assessment of progressive collapse po-tential in framed steel structures’’, Case Studies in Structural Engineering, 3, 11-18.
[19] Rahnavard, R., & Siahpolo, N. (2017). “Function comparison between moment frame and moment frame with centrically braces in high-rise steel structure under the effect of progressive collapse’’, Journal of Structural and Construction Engineering, 4(4), 42-57.
[20] Soleymani, A., & Esfahani, M. R. (2019). “Effect of concrete strength and thickness of flat slab on pre-venting of progressive collapse caused by elimination of an internal column’’, Structural and Construction Engineering, 6(1), 24-40.
[21] Rahmani, I., Azhdari, M., & Moayyedian, M. (2013). “Effect of Catenary Action on Reducing the Vulner-ability of Steel Bending - Frame Structures versus Progressive Collapse’’, Advanced Defence Science and Tech-nology, 3, 157-166.
[22] ETABS2015 Software. (2014). Computers and structures- Inc. Berkeley, CA.
[23] Iranian National Building Code. (2013). Part 10th, Design Loads for Buildings.
[24] Iranian National Building Code. (2013). Part 10th, Design and Construction of steel buildings.
[25] Iranian Building Codes and Standards. (2014). Iranian Code Of Practice For Seismic Resistant Design Of Buildings, Standard No.2800, 4th Edition.
[26] Marjanishvili, S., & Agnew, E. (2006). “Comparison of various procedures for progressive collapse analy-sis’’, Journal of Performance of Constructed Facilities, 20(4), 365-374.
[27] FEMA 356. (2000). Pre Standard and Commentary for the Seismic Rehabilitation of Buildings. Federal Emergency Management Agency. Washington. D.C.
[28] Kwon, K., & Kim, J. (2014). “Progressive collapse and seismic performance of twisted diagrid buildings’’, International Journal of High-Rise Buildings, 3(3), 223-230.
ارسال نظر در مورد این مقاله
CAPTCHA Image

فایل ها

هم رسانی

ارجاع به این مقاله

آمار