Investigating the Performance of Viscoelastic Dampers (VED) Under Nearfield Earthquakes with Directivity Feature
| Autor: | Mohammad Sadegh Rohanimanesh, Ehsan Mohammadiha, Ali Vatanshenas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
0211 other engineering and technologies Vibration control Steel structures 020101 civil engineering 02 engineering and technology Directivity Viscoelasticity 0201 civil engineering Damper Physics::Geophysics Directivity effect Business management Civil and Structural Engineering 021110 strategic defence & security studies business.industry Structural engineering Near-field earthquake Feature (computer vision) Steel structure lcsh:TA1-2040 Viscoelastic damper business lcsh:Engineering (General). Civil engineering (General) Geology |
| Zdroj: | Civil and Environmental Engineering, Vol 14, Iss 1, Pp 21-27 (2018) |
| ISSN: | 2199-6512 1336-5835 |
| Popis: | One of the most important factors that make structures vulnerable to earthquakes is the short distance between structures and epicenter. Near-field earthquakes have special properties, such as increasing acceleration applied to the structure, which distinguishes them from far-field earthquakes. Therefore, the absorption of input energy for structures located near the faults is very important. Hence, by rotating the earthquake acceleration time history and comparing the resulting spectral acceleration response, the angle which applies the greatest force to the structure on the earthquake directivity side is obtained, and then the performance of a steel structure with viscoelastic dampers (VED) under near-field earthquakes with directivity feature is investigated. After analyzing the structure using nonlinear time history analysis, it was observed that the directivity phenomenon leads to significant increase in the force applied to the structure, but the viscoelastic dampers showed an acceptable performance in both states of with and without directivity. |
| Databáze: | OpenAIRE |
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