Assessing the soil-structure interaction effects by direct method on the out-of-plane behavior of masonry structures (ca
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Assessing the soil‑structure interaction effects by direct method on the out‑of‑plane behavior of masonry structures (case study: Arge‑Tabriz) Ahmad Fathi1 · Arjang Sadeghi1 · M. Reza Emami Azadi1 · Nader Hoveidae1 Received: 1 March 2020 / Accepted: 12 August 2020 © Springer Nature B.V. 2020
Abstract Soil-Structure Interaction (SSI) is an outstanding factor that influences the linear and nonlinear performance of any structure, and it can be taken into account as one of the most important and effective considerations on the seismic behavior of buildings. On the other hand, historic masonry buildings are specific and important structures, which are significantly affected by SSI. Preservation of these buildings is one of the main demands of every culture and every society; and evaluating the behavior of these buildings under natural events such as earthquake, considering aforementioned SSI phenomenon, is an essential step, in this regard. In this paper, the impact of SSI on the out-of-plane behavior of an ancient building in Iran, named Arge-Tabriz, has been investigated utilizing Finite Element Method (FEM). Modal and nonlinear Time-History (TH) analyses results revealed that SSI has a significant decreasing effect on the acceleration response due to removing the effective mode vectors from the resonance area of the acceleration response spectra. On the contrary, SSI has a remarkable increasing impact on the displacement response of Arg’s walls according to the displacement response spectra. Keywords Soil-structure interaction (SSI) · Out-of-plane behavior · Ancient masonry · Arge Tabriz · Finite element method
1 Introduction Soil-Structure Interaction (SSI) is an important factor on the seismic behavior of structures; It has a significant detrimental effect on the behavior of structures, specifically tall or massive structures, resting on soft soil and structural safety could not be guaranteed by excluding this phenomenon (Tabatabaiefar et al. 2012); and this effect became more and more important by decreasing subsoil’s plasticity (Fatahi and Tabatabaiefar 2014). SSI can cause considerable changes in the structure’s dynamic response; some of these changes can
* Nader Hoveidae [email protected] 1
Department of Civil Engineering, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran
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Bulletin of Earthquake Engineering
be referred to as damping increase or decreasing base shear and/or natural frequency of the system (Mylonakis and Gazetas 2000). Since the soil environment is a semi-infinite and non-homogene environment, its modeling is more complicated than the modeling of a structure. Adopting an appropriate modeling technique and an accurate computation method is a challenging and one of the most important steps in SSI analysis, because if the soil medium is modeled properly using a proper modeling methodology, the seismic response resulting from the dynamic soil-structure analysis can be realistically determined (Far and Clifton 2016; Far and Flint 2017)
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