| Title: |
Response Reduction Factor for Structures with Significant Irregularities on Different Soil Stratum |
| Authors: |
Elsadany, Shorouk M.; Fayed, M. N.; Sorour, Tamer M.; Anwar, A. M.; Nasr, Nasr E. |
| Source: |
Civil Engineering Journal; Vol. 10 No. 3 (2024): March; 757-778 ; 2476-3055 ; 2676-6957 |
| Publisher Information: |
Salehan Institute of Higher Education |
| Publication Year: |
2024 |
| Collection: |
Civil Engineering Journal (C.E.J) |
| Subject Terms: |
Irregular RC Buildings; Elevation Irregularity; Plan Irregularity; Nonlinear Static Pushover Analysis; Response Reduction Factor; Soil Structure Interaction |
| Description: |
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 SAP2000 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 15–40% from the ECP 2020 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 20.3% and 13.1% for fixed and isolated supports, respectively, on loose soil. Additionally, stiffer base soils were associated with higher R values for the same structure. Doi:10.28991/CEJ-2024-010-03-07 Full Text: PDF |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://civilejournal.org/index.php/cej/article/view/4599/pdf; https://civilejournal.org/index.php/cej/article/view/4599 |
| Availability: |
https://civilejournal.org/index.php/cej/article/view/4599 |
| Rights: |
Copyright (c) 2024 shorouk mohamed elsadany |
| Accession Number: |
edsbas.59B0493 |
| Database: |
BASE |