際際滷shows by User: NegarNazari1 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: NegarNazari1 / Mon, 04 Dec 2017 18:15:23 GMT 際際滷Share feed for 際際滷shows by User: NegarNazari1 Effect of Seismic Aftershock Uncertainty on Mainshock Collapse Probabilities for Woodframe Buildings /slideshow/effect-of-seismic-aftershock-uncertainty-on-mainshock-collapse-probabilities-for-woodframe-buildings/83341557 icossar-171204181523
The combination of a mainshock and aftershock results in the equivalent of a very long duration earthquake, requiring structures to dissipate more energy. Buildings damaged during a mainshock may be at a much higher risk of collapse or severe damage during aftershocks. The uncertainty surrounding the occurrence of an earthquake itself is significant let alone when the uncertainty of aftershocks is included in a risk analysis. The magnitude distribution of aftershocks is independent of the elapsed time after the mainshock, so aftershocks of large magnitudes are, in theory, still possible a long time after the mainshock. The probability distribution of aftershock locations is dependent on the mainshock rupture zone geometry. In this paper, the effect of aftershock uncertainty on collapse risk is presented. Specifically, the effect of spatial distribution of aftershocks on collapse fragilities in a rupture zone is investigated. After-shock fragilities for different site to source distances are developed by performing incremental dynamic analysis (IDA) using a sequence of mainshock-aftershock ground motions. In order to get the seismic response of the damaged building, nonlinear time history analysis is performed by using a sequence of mainshocks of different levels and random aftershocks.]]>
The combination of a mainshock and aftershock results in the equivalent of a very long duration earthquake, requiring structures to dissipate more energy. Buildings damaged during a mainshock may be at a much higher risk of collapse or severe damage during aftershocks. The uncertainty surrounding the occurrence of an earthquake itself is significant let alone when the uncertainty of aftershocks is included in a risk analysis. The magnitude distribution of aftershocks is independent of the elapsed time after the mainshock, so aftershocks of large magnitudes are, in theory, still possible a long time after the mainshock. The probability distribution of aftershock locations is dependent on the mainshock rupture zone geometry. In this paper, the effect of aftershock uncertainty on collapse risk is presented. Specifically, the effect of spatial distribution of aftershocks on collapse fragilities in a rupture zone is investigated. After-shock fragilities for different site to source distances are developed by performing incremental dynamic analysis (IDA) using a sequence of mainshock-aftershock ground motions. In order to get the seismic response of the damaged building, nonlinear time history analysis is performed by using a sequence of mainshocks of different levels and random aftershocks.]]> Mon, 04 Dec 2017 18:15:23 GMT /slideshow/effect-of-seismic-aftershock-uncertainty-on-mainshock-collapse-probabilities-for-woodframe-buildings/83341557 NegarNazari1@slideshare.net(NegarNazari1) Effect of Seismic Aftershock Uncertainty on Mainshock Collapse Probabilities for Woodframe Buildings NegarNazari1 The combination of a mainshock and aftershock results in the equivalent of a very long duration earthquake, requiring structures to dissipate more energy. Buildings damaged during a mainshock may be at a much higher risk of collapse or severe damage during aftershocks. The uncertainty surrounding the occurrence of an earthquake itself is significant let alone when the uncertainty of aftershocks is included in a risk analysis. The magnitude distribution of aftershocks is independent of the elapsed time after the mainshock, so aftershocks of large magnitudes are, in theory, still possible a long time after the mainshock. The probability distribution of aftershock locations is dependent on the mainshock rupture zone geometry. In this paper, the effect of aftershock uncertainty on collapse risk is presented. Specifically, the effect of spatial distribution of aftershocks on collapse fragilities in a rupture zone is investigated. After-shock fragilities for different site to source distances are developed by performing incremental dynamic analysis (IDA) using a sequence of mainshock-aftershock ground motions. In order to get the seismic response of the damaged building, nonlinear time history analysis is performed by using a sequence of mainshocks of different levels and random aftershocks. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/icossar-171204181523-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> The combination of a mainshock and aftershock results in the equivalent of a very long duration earthquake, requiring structures to dissipate more energy. Buildings damaged during a mainshock may be at a much higher risk of collapse or severe damage during aftershocks. The uncertainty surrounding the occurrence of an earthquake itself is significant let alone when the uncertainty of aftershocks is included in a risk analysis. The magnitude distribution of aftershocks is independent of the elapsed time after the mainshock, so aftershocks of large magnitudes are, in theory, still possible a long time after the mainshock. The probability distribution of aftershock locations is dependent on the mainshock rupture zone geometry. In this paper, the effect of aftershock uncertainty on collapse risk is presented. Specifically, the effect of spatial distribution of aftershocks on collapse fragilities in a rupture zone is investigated. After-shock fragilities for different site to source distances are developed by performing incremental dynamic analysis (IDA) using a sequence of mainshock-aftershock ground motions. In order to get the seismic response of the damaged building, nonlinear time history analysis is performed by using a sequence of mainshocks of different levels and random aftershocks.
Effect of Seismic Aftershock Uncertainty on Mainshock Collapse Probabilities for Woodframe Buildings from Negar Nazari
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]]> Sun, 10 May 2015 22:16:25 GMT /slideshow/resume2015negar-nazari/47973078 NegarNazari1@slideshare.net(NegarNazari1) Resume2015Negar Nazari NegarNazari1 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/513de89e-afea-41ea-b785-9613df13f0a1-150510221625-lva1-app6891-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br>
Resume2015Negar Nazari from Negar Nazari
]]> 389 4 https://cdn.slidesharecdn.com/ss_thumbnails/513de89e-afea-41ea-b785-9613df13f0a1-150510221625-lva1-app6891-thumbnail.jpg?width=120&height=120&fit=bounds document 000000 http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 https://public.slidesharecdn.com/v2/images/profile-picture.png https://cdn.slidesharecdn.com/ss_thumbnails/icossar-171204181523-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/effect-of-seismic-aftershock-uncertainty-on-mainshock-collapse-probabilities-for-woodframe-buildings/83341557 Effect of Seismic Afte... https://cdn.slidesharecdn.com/ss_thumbnails/513de89e-afea-41ea-b785-9613df13f0a1-150510221625-lva1-app6891-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/resume2015negar-nazari/47973078 Resume2015Negar Nazari