Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Steel and Composite Structures Volume 20, Number 2, February10 2016 , pages 357-378 DOI: https://doi.org/10.12989/scs.2016.20.2.357 |
|
|
|
Design guides to resist progressive collapse for steel structures |
||
M. Mirtaheri and M. Abbasi Zoghi
|
||
| Abstract | ||
| The progressive collapse phenomenon in structures has been interested by civil engineers and the building standards organizations. This is particularly true for the tall and special buildings ever since local collapse of the Ronan Point tower in UK in 1968. When initial or secondary defects of main load carrying elements, overloads or unpredicted loads occur in the structure, a local collapse may be arise that could be distributed through entire structure and cause global collapse. One is not able to prevent the reason of failure as well as the prevention of propagation of the collapse. Also, one is not able to predict the start point of collapse. Therefore we should generalize design guides to whole or the part of structure based on the risk analysis and use of load carrying elements removal scenario. There are some new guides and criteria for elements and connections to be designed to resist progressive collapse. In this paper, codes and recommendations by various researchers are presented, classified and compared for steel structures. Two current design methods are described in this paper and some retrofitting methods are summarized. Finally a steel building with special moment resistant frame is analyzed as a case study based on two standards guidelines. This includes consideration of codes recommendations. It is shown that progressive collapse potential of the building depends on the removal scenario selection and type of analysis. Different results are obtained based on two guidelines. | ||
| Key Words | ||
| progressive collapse; steel frame structures; direct and indirect design; AP method; retrofitting methods | ||
| Address | ||
| Department of civil engineering, K.N. Toosi University of Technology, Tehran, Iran. | ||