Derya Deniz, PhD

ASST. PROFESSOR, DEPARTMENT OF CIVIL ENGINEERING, OZYEGIN UNIVERSITY

In May 2019, Dr. Derya Deniz attended the 13th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP13) in Seoul, Korea. She presented her research entitled: “Flood Performance and Dislocation Assessment for Lumberton Homes after Hurricane Matthew”.

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In late June 2019, Dr. Deniz also joined the 2nd International Conference on Natural Hazards & Infrastructure (ICONHIC2019), in Chania, Greece in late June,  to give two prsenations entitled: “Data-driven versus Simulation Approaches in Flood Performance Assessment of the Residential Buildings: A Case Study of 2013 Colorado Flood”  and “Collapse risk assessment of ductile frames under earthquake loadings using energy-based performance descriptors” :

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To get more information on the ICASP paper, please check:

https://www.researchgate.net/publication/333653042_Flood_Performance_and_Dislocation_Assessment_for_Lumberton_Homes_after_Hurricane_Matthew

 

 

Today was the last day for courses and the Spring 2019 semester is finally over. I really thank my students for this semester and looking forward to meeting them again in other CE courses!

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The two abstracts below have been accepted to present at the 2nd  International Conference on Natural Hazards & Infrastructure (ICONHIC 2019), which will held in Chania, Greece between June 23 and 26, 2019 (https://iconhic.com/2019/): 

  1. Deniz, D., Ellingwood, B., Liel, A., and Dashti, S. (2019). “Data-driven versus Simulation Approaches in Flood Performance Assessment of the Residential Buildings: A Case Study of 2013 Colorado Flood.” 2nd International Conference on Natural Hazards & Infrastructure(ICONHIC2019), Chania, Greece (abstract accepted).
  2. Deniz, D., Song, J., and Hajjar, J.F. (2019). “Collapse risk assessment of ductile frames under earthquake loadings using energy-based performance descriptors.” 2nd International Conference on Natural Hazards & Infrastructure (ICONHIC2019), Chania, Greece (abstract accepted).

Our full paper submitted to “13th International Conference on Applicationsof Statistics and Probability in Civil Engineering (ICASP)” has been accepted !


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As being guest-editors in the journal of “Sustainability”,  Dr. Deniz,  Dr. Hariri-Ardebili (from Univ. of Colorado-Boulder), and Dr. Farokhnia (from Colorado State University) are working on a special issue “Sustainability and Resiliency under Multi-Hazards”. This is a journal indexed by SCI-expanded, with an impact factor of  2.075.  For more information, please see the link below. All colleagues are welcome to submit their related papers for this special issue until November 30, 2019 !

https://www.mdpi.com/journal/sustainability/special_issues/Sustainability_Resiliency_Multi-Hazards

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Starting in Fall 2018, two students Yasamin Moaiyedfar (MS, 2020) and Hasan Numan Olmez (MS, 2020) joined Dr. Deniz’s research group  to pursue their MS degree in Structural Engineering at Ozyegin University. Under Dr. Deniz’s supervision, Yasamin is currently working on detailed FE models and analyses of structural masonry and concrete walls subjected to flood actions. Hasan is investigating performance and loss assessment of building structures under both flood and earthquake loads.  Yasamin and Hasan: Welcome to Dr. Deniz’s Research Group!

More information about Dr. Deniz ‘s Research Group is available here.

Check the link:   https://doi.org/10.6028/NIST.SP.1230

For proper citation, please use:

van de Lindt, J.W., W. G. Peacock, J. Mitrani-Reiser, N. Rosenheim, D. Deniz, M. Dillard, T. Tomiczek, M. Koliou, A. Graettinger, S. Crawford, K. Harrison, A. Barbosa, J. Tobin, J. Helgeson, L. Peek, M. Memari, E. Sutley, D. Gu, S. Cauffman, and J. Fung. (2018). Community Resilience-Focused Technical Investigation of the 2016 Lumberton, North Carolina Flood: Multi-Disciplinary Approach. National Institute of Standards and Technology (NIST SP 1230). https://doi.org/10.6028.NIST.SP.1230.

 

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NIST.SP.1230

Dr. Derya Deniz was awarded a two year – research grant by The Scientific and Technological Research Council of Turkey ( TUBITAK / BIDEB-2232 Research Grant Program ) and serves as the PI for the research project “ Flood Damage, Economical Loss and Functionality Models for Critical Industrial Structures in Turkey”,  supported for two years between August 2018 and August 2020.

 

Two abstracts, titled  “Flood Performance and Dislocation Assessment for Lumberton Homes after Hurricane Matthew” and “Functionality Assessment for Homes in Boulder, Colorado following the September, 2013 Flood”,  have been accepted to present at the 13th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP13). The conference will be held at Seoul National University (Seoul, S. Korea) from May 26 to 30, 2019.

A journal paper entitled “Energy-based sidesway collapse fragilities for ductile structural frames under earthquake loadings” has been recently published in Engineering Structures:

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https://doi.org/10.1016/j.engstruct.2018.07.019

Abstract: In assessing the likelihood of structural collapse under strong earthquake motions, uncertainties in structural properties and ground motions can be incorporated by use of a probabilistic analysis framework in conjunction with analysis methods such as incremental dynamic analysis (IDA). Maximum inter-story drift ratio (IDR) is typically selected as the key descriptor to characterize the global behavior of structural system in such a probabilistic assessment. The structural collapse capacity is often defined in terms of a threshold value of IDR or a reduced slope of the IDA curve between a selected seismic intensity measure and the corresponding IDR. However, collapse assessment approaches based on IDR may not accurately represent the overall structural collapse behavior due to redistribution and variation of local damage within the structure. Moreover, results of collapse predictions are found to be sensitive to variability in such drift measures, and assumed threshold values used in the collapse criterion. Recently, an energy-based seismic collapse criterion has been developed to de- scribe collapse in terms of dynamic instability of the whole structural system caused by gravity loads. Using the energy-based collapse criterion, this paper proposes a more effective sidesway collapse risk assessment approach of ductile planar frames subjected to horizontal seismic loadings based on a new key descriptor of structural performance. The key descriptor, designated as the equivalent-velocity ratio, is related to the ratio of the energy dissipated through structural degradation to the seismic input energy. Using the equivalent-velocity ratio, a probabilistic collapse assessment method is developed for systematic treatment of uncertainties in the ground motions.