Effect of vertical component of an earthquake on steel frames considering soil-structure interaction
| Autor: | Faramarz Khoshnoudian, Hossein Abdollahiparsa, Peyman Homami |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
021110 strategic
defence & security studies Shear waves 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Soil type 0201 civil engineering Nonlinear system Shear (geology) Soil structure interaction Soil water Geotechnical engineering Vertical displacement Geology Civil and Structural Engineering Fixed base |
| Zdroj: | KSCE Journal of Civil Engineering. 20:2790-2801 |
| ISSN: | 1976-3808 1226-7988 |
| Popis: | The present study investigated the effects of vertical components of earthquakes on the responses of 5, 15, and 25 story steel frames by taking into account Soil-Structure Interaction (SSI). The frames were modeled on a fixed base and simulated using two shear waves velocities for the soil (100 and 250 m/s according to NEHERP soil code types E and D soils) using a cone model. The nonlinear behavior of the frames was investigated in the presence and absence of the vertical component of an earthquake and the effects of SSI were examined by comparing the results of the latter analysis with and without use of the cone model. The results showed that the vertical component and SSI can increase the axial force on columns by nearly 50%, the vertical displacement of the mid-point of the beams by nearly two-fold, drift of the stories by nearly 40%, and foundation rotation. Story shear was less affected. When soil type E and soil type D were compared, it was found that the effect of the vertical component of earthquakes on the dynamic response of the frames was generally significant. |
| Databáze: | OpenAIRE |
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