The effects of modeling uncertainties on the residual drift of steel structures under mainshock-aftershock sequences

Structures ◽  
2022 ◽  
Vol 36 ◽  
pp. 912-926
Author(s):  
Mohammad Ch. Basim ◽  
Farzaneh Pourreza ◽  
Meysam Mousazadeh ◽  
Arash Akbari Hamed
Keyword(s):  
Steel Structures ◽  
Residual Drift ◽  
Aftershock Sequences ◽  
Modeling Uncertainties

Collapse Fragility of Steel Structures Subjected to Earthquake Mainshock-Aftershock Sequences

2014 ◽  
Vol 140 (12) ◽  
pp. 04014095 ◽  
Author(s):  
Yue Li ◽  
Ruiqiang Song ◽  
John W. Van De Lindt
Keyword(s):  
Steel Structures ◽  
Aftershock Sequences

scholarly journals Improving the Structural Reliability of Steel Frames Using Posttensioned Connections

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Edén Bojórquez ◽  
Arturo López-Barraza ◽  
Alfredo Reyes-Salazar ◽  
Sonia E. Ruiz ◽  
Jorge Ruiz-García ◽  
...  
Keyword(s):  
Ground Motion ◽  
Structural Reliability ◽  
Narrow Band ◽  
Steel Frames ◽  
Steel Structures ◽  
Incremental Dynamic Analysis ◽  
Spectral Acceleration ◽  
Residual Drift ◽  
Interstory Drift ◽  
Moment Resisting

In this paper, various moment-resisting steel frames (MRSFs) are subjected to 30 narrow-band motions scaled at different ground motion intensity levels in terms of spectral acceleration at first mode of vibration SaT1 in order to perform incremental dynamic analysis for peak and residual interstory drift demands. The results are used to compute the structural reliability of the steel frames by means of hazard curves for peak and residual drifts. It is observed that the structures exceed the threshold residual drift of 0.5%, which is perceptible to human occupants, and it could lead to human discomfort according to recent investigations. For this reason, posttensioned connections (PTCs) are incorporated into the steel frames in order to improve the structural reliability. The results suggest that the annual rate of exceedance of peak and residual interstory drift demands are reduced with the use of PTC. Thus, the structural reliability of the steel frames with PTC is superior to that of the MRSFs. In particular, the residual drift demands tend to be smaller when PTCs are incorporated in the steel structures.

CAD Of Anticorrosive Protection Of Steel Structures

2019 ◽  
pp. 18-23
Keyword(s):  
Protective Coating ◽  
Computer Aided Design ◽  
Steel Structures ◽  
Cost Effective ◽  
Operating Conditions ◽  
Computational Tool ◽  
Protection Method ◽  
Cost Effective Method ◽  
The Cost ◽  
Aided Design

The choice of cost-effective method of anticorrosive protection of steel structures is an urgent and time consuming task, considering the significant number of protection ways, differing from each other in the complex of technological, physical, chemical and economic characteristics. To reduce the complexity of solving this problem, the author proposes a computational tool that can be considered as a subsystem of computer-aided design and used at the stage of variant and detailed design of steel structures. As a criterion of the effectiveness of the anti-corrosion protection method, the cost of the protective coating during the service life is accepted. The analysis of existing methods of steel protection against corrosion is performed, the possibility of their use for the protection of the most common steel structures is established, as well as the estimated period of effective operation of the coating. The developed computational tool makes it possible to choose the best method of protection of steel structures against corrosion, taking into account the operating conditions of the protected structure and the possibility of using a protective coating.

Technology for Anticorrosive Protection of Steel Structures by Coatings Based on Rapid-Setting Bitumen-Latex Emulsion

2016 ◽  
Vol 12 (1) ◽  
pp. 28-35
Author(s):  
H.M. Nykyforchyn ◽  
◽  
V.A. Chervatyuk ◽  
V.I. Marukha ◽  
Z.V. Slobodyan ◽  
...  
Keyword(s):  
Steel Structures ◽  
Rapid Setting

Modeling Uncertainties of a Gas-Delivery Project

2007 ◽  
Author(s):  
Dominique F. Frizzell ◽  
Michael Sibley ◽  
Bryan Clayton Cotner ◽  
Simon Peter McCartney ◽  
George Russell Schmidt ◽  
...  
Keyword(s):  
Modeling Uncertainties
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