Response Reduction Factor for Structures with Significant Irregularities on Different Soil Stratum
- سال انتشار: 1403
- محل انتشار: ژورنال مهندسی عمران، دوره: 10، شماره: 3
- کد COI اختصاصی: JR_CEJ-10-3_007
- زبان مقاله: انگلیسی
- تعداد مشاهده: 165
نویسندگان
چکیده
The ability of a structure to dissipate energy through inelastic behavior is reflected in the response reduction factor (R), which is influenced by redundancy, ductility, and overstrength. Accurate determination of R is crucial for seismic design. This study focuses on determining the response factor for reinforced concrete (RC) structures with various irregularities. Non-linear static pushover analysis using SAP۲۰۰۰ was employed for numerical simulations to assess the impact of soil-structure interaction (SSI). The analysis included elevational and in-plan irregularities, revealing that buildings with irregular vertical geometries have lower inelastic seismic capacities compared to regular buildings. Consequently, R should be reduced by ۱۵–۴۰% from the ECP ۲۰۲۰ standard before the design phase for such structures. Irregularity was found to have a significant impact on weak soil conditions (C), leading to a reduction in R of ۲۰.۳% and ۱۳.۱% for fixed and isolated supports, respectively, on loose soil. Additionally, stiffer base soils were associated with higher R values for the same structure. Doi: ۱۰.۲۸۹۹۱/CEJ-۲۰۲۴-۰۱۰-۰۳-۰۷ Full Text: PDFکلیدواژه ها
Irregular RC Buildings; Elevation Irregularity; Plan Irregularity; Nonlinear Static Pushover Analysis; Response Reduction Factor; Soil Structure Interaction.اطلاعات بیشتر در مورد COI
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