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Collapse risk and residual drift performance of steel buildings using post-tensioned MRFs and viscous dampers in near-fault regions
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Tzimas, Angelos S., Kamaris, Geordios, Karavasilis, Theodore L. and Galasso, C. (2016) Collapse risk and residual drift performance of steel buildings using post-tensioned MRFs and viscous dampers in near-fault regions. Bulletin of Earthquake Engineering, 14 (6). pp. 1643-1662. doi:10.1007/s10518-016-9898-3
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WRAP_1073800-es-040316-sc-mrfs_near-source_.pdf - Accepted Version - Requires a PDF viewer. Download (1816Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/s10518-016-9898-3
Abstract
The potential of post-tensioned self-centering moment-resisting frames (SC-MRFs) and viscous dampers to reduce the collapse risk and improve the residual drift performance of steel buildings in near-fault regions is evaluated. For this purpose, a prototype steel building is designed using different seismic-resistant frames, i.e.: moment-resisting frames (MRFs); MRFs with viscous dampers; SC-MRFs; and SC-MRFs with viscous dampers. The frames are modeled in OpenSees where material and geometrical nonlinearities are taken into account as well as stiffness and strength deterioration. A database of 91 near-fault, pulse-like ground motions with varying pulse periods is used to conduct incremental dynamic analysis (IDA), in which each ground motion is scaled until collapse occurs. The probability of collapse and the probability of exceeding different residual story drift threshold values are calculated as a function of the ground motion intensity and the period of the velocity pulse. The results of IDA are then combined with probabilistic seismic hazard analysis models that account for near-fault directivity to assess and compare the collapse risk and the residual drift performance of the frames. The paper highlights the benefit of combining the post-tensioning and supplemental viscous damping technologies in the near-source. In particular, the SC-MRF with viscous dampers is found to achieve significant reductions in collapse risk and probability of exceedance of residual story drift threshold values compared to the MRF.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QE Geology T Technology > TH Building construction |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Buildings -- Earthquake effects -- Mathematical models, Post-tensioned prestressed concrete, Building failures, Earthquake hazard analysis | ||||||||
| Journal or Publication Title: | Bulletin of Earthquake Engineering | ||||||||
| Publisher: | Springer Netherlands | ||||||||
| ISSN: | 1570-761X | ||||||||
| Official Date: | June 2016 | ||||||||
| Dates: |
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| Volume: | 14 | ||||||||
| Number: | 6 | ||||||||
| Page Range: | pp. 1643-1662 | ||||||||
| DOI: | 10.1007/s10518-016-9898-3 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Funder: | Marie Curie Intra-European Fellowship (IEF), Engineering and Physical Sciences Research Council (EPSRC) | ||||||||
| Grant number: | EP/K006118/1 |
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