Effect of vertical component of an earthquake on steel frames considering soil-structure interaction

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• 作者：Hossein Abdollahiparsa ; Peyman Homami…
• 关键词：vertical component of earthquakes ; soil ; structure interaction ; steel structures ; near ; field effect ; nonlinear behavior
• 刊名：KSCE Journal of Civil Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：20
• 期：7
• 页码：2790-2801
• 全文大小：1,761 KB
• 刊物类别：Engineering
• 刊物主题：Civil Engineering
  Industrial Pollution Prevention
  Automotive and Aerospace Engineering and Traffic
  Geotechnical Engineering
  
• 出版者：Korean Society of Civil Engineers
• ISSN：1976-3808
• 卷排序：20

文摘

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.