Seismic fragility of low-rise steel frames including SSI and site amplification effects

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2024-12-25 DOI:10.1016/j.soildyn.2024.109181

Paraskevi Tsoumani, Christos Petridis, Dimitris Pitilakis

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Abstract

We aim to assess the influence of soil–structure interaction (SSI) and site amplification (SAmp) effects on the seismic response of steel frame structures. In particular, idealized steel structures are examined. Typical soil materials and profiles are selected according to Eurocode 8 and simulated with finite elements using OpenSees. Then, incremental dynamic analyses are carried out using actual earthquake records of increasing intensity. The study of the steel frames is performed for two foundation models: (a) fixed-base and (b) Beam-on-Nonlinear-Winkler-Foundation spring-type foundation elements. The results of the dynamic analyses are indicatively presented and discussed based on both the relative displacement of the floors and the moment–rotation curve at the ends of the beams and columns. The thorough analysis and comparison of the results demonstrate the significant contribution of various subsoil configurations and SSI to the seismic behavior of steel frames. The methodology can be used to assess further the influence of SAmp and SSI on steel structures’ seismic fragility and vulnerability.

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来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.