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title

Near-Field's Dynamic Properties for Dynamic Soil- Structure Interaction Analysis

Credit to Download: 1 | Page Numbers 14 | Abstract Views: 374
Year: 2014
COI code: ICSAU02_0506
Paper Language: English

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Authors Near-Field's Dynamic Properties for Dynamic Soil- Structure Interaction Analysis

  H. Sayyadpour - Ph.D. Candidate, Isfahan University of Technology, Iran,
  F. Behnamfar - Associate Professor, Isfahan University of Technology, Iran

Abstract:

Direct and substructure methods are two main approaches for modeling dynamic soilstructure interaction problem. In this research the problem of soil-structure interaction analysis with the direct method is studied. The direct method consists of modeling the superstructure and underlying soil domain. Using reduced shear modulus and an increased damping ratio resulted from an equivalent linear free-field analysis is a traditional method for simulating soil medium behavior. However, this method is not accurate enough in the vicinity of foundation where the soil experiences large strains and the behavior is highly nonlinear. This research proposes modified modulus degradation and damping ratios for using in the near-field zone in order to obtain more accurate results. As the properties of the region near the foundation is dependent on both superstructure and soil properties, near-field modulus degradation and damping ratios have been presented as functions of dimensionless parameters controlling nonlinear behavior in the near-field. Semi-analytical models have been proposed and the ability of this method was evaluated. The results of verification example show the accuracy of this approach.

Keywords:

soil-structure interaction, equivalent linear method, near-field, modulus degradation

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https://www.civilica.com/Paper-ICSAU02-ICSAU02_0506.html
COI code: ICSAU02_0506

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Sayyadpour, H. & F. Behnamfar, 2014, Near-Field's Dynamic Properties for Dynamic Soil- Structure Interaction Analysis, 2nd international congress of structure, architecture and urban development, تبريز, دبيرخانه دائمي كنگره بين المللي سازه ، معماري و توسعه شهري, https://www.civilica.com/Paper-ICSAU02-ICSAU02_0506.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Sayyadpour, H. & F. Behnamfar, 2014)
Second and more: (Sayyadpour & Behnamfar, 2014)
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Type: state university
Paper No.: 13156
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