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Hajian, Morvarid, Attarnejad, Reza. (1403). A novel formulation for Ductility Strength Reduction Factor of Structures Considering Kinematic and Inertial Soil-Structure Interaction. , (), -. doi: 10.22059/ceij.2025.382782.2159
Morvarid Hajian; Reza Attarnejad. "A novel formulation for Ductility Strength Reduction Factor of Structures Considering Kinematic and Inertial Soil-Structure Interaction". , , , 1403, -. doi: 10.22059/ceij.2025.382782.2159
Hajian, Morvarid, Attarnejad, Reza. (1403). 'A novel formulation for Ductility Strength Reduction Factor of Structures Considering Kinematic and Inertial Soil-Structure Interaction', , (), pp. -. doi: 10.22059/ceij.2025.382782.2159
Hajian, Morvarid, Attarnejad, Reza. A novel formulation for Ductility Strength Reduction Factor of Structures Considering Kinematic and Inertial Soil-Structure Interaction. , 1403; (): -. doi: 10.22059/ceij.2025.382782.2159

A novel formulation for Ductility Strength Reduction Factor of Structures Considering Kinematic and Inertial Soil-Structure Interaction

Civil Engineering Infrastructures Journal
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 13 اسفند 1403    اصل مقاله (1022.42 K)
شناسه دیجیتال (DOI): 10.22059/ceij.2025.382782.2159
نویسندگان
Morvarid Hajian1؛ Reza Attarnejad* 2
1School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
2School of Civil Engineering, University of Tehran, Tehran, Iran
چکیده
The strength reduction factor presented in design codes has been examined disregarding the influence of soil-structure interaction (SSI). However, it has been proved that SSI can significantly affect structural responses. Most recent studies evaluating the strength reduction factors have primarily focused on single-degree-of-freedom soil-structure systems, potentially overlooking the behavior of multi-degree-of-freedom systems. Furthermore, there is a lack of research, concerning the suggestion of a proper relationship to estimate the strength reduction factor of multi-story buildings considering SSI. Therefore, this paper focused on investigating the SSI effects on ductility strength reduction factor (Rμ ) and presenting a simplified expression to practically estimate Rμ, including inertial and kinematic interactions. To obtain reliable results, several nonlinear multi-story structures with different ductility ratios subjected to earthquake ground motions on soft soils were analyzed. Unlike other studies that utilized simple spring methods to model the soil, this research represented the soil as a continuous medium. Consequently, this study addressed the limitations of modeling found in comparable research and, building on this, introduced a novel relationship for application in design codes. By comparing with the literature review, it was noted that the suggested formula could provide a fairly accurate estimation of the strength reduction factor.
کلیدواژه‌ها
Soil-structure interaction (SSI)؛ Strength Reduction Factor؛ MDOF systems؛ nonlinear dynamic analysis؛ Soft soils
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تعداد مشاهده مقاله: 73
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