The effect of different intensity measures and earthquake directions on the seismic assessment of skewed highway bridges
| Autor: | Nicola Nisticò, Farhad Daneshjoo, Mahmoud Bayat |
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| Rok vydání: | 2017 |
| Předmět: |
Engineering
skewed highway bridge 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Induced seismicity Incremental Dynamic Analysis 0201 civil engineering Fragility Seismic assessment Sensitivity (control systems) Radiant intensity Civil and Structural Engineering 021110 strategic defence & security studies business.industry Mechanical Engineering Skew spectral intensity measure Building and Construction Structural engineering Geotechnical Engineering and Engineering Geology earthquake direction analytical fragility curve business Intensity (heat transfer) |
| Zdroj: | Earthquake Engineering and Engineering Vibration. 16:165-179 |
| ISSN: | 1993-503X 1671-3664 |
| DOI: | 10.1007/s11803-017-0375-z |
| Popis: | In this study the probable seismic behavior of skewed bridges with continuous decks under earthquake excitations from different directions is investigated. A 45° skewed bridge is studied. A suite of 20 records is used to perform an Incremental Dynamic Analysis (IDA) for fragility curves. Four different earthquake directions have been considered: -45°, 0°, 22.5°, 45°. A sensitivity analysis on different spectral intensity meas ures is presented; efficiency and practicality of different intensity measures have been studied. The fragility curves obtained indicate that the critical direction for skewed bridges is the skew direction as well as the longitudinal direction. The study shows the importance of finding the most critical earthquake in understanding and predicting the behavior of skewed bridges. |
| Databáze: | OpenAIRE |
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