Overstrength and ductility factors of XBF structures with pinned and fixed supports
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25 ene 2023
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Categoría del artículo: Original Study
Publicado en línea: 25 ene 2023
Páginas: 41 - 54
Recibido: 08 nov 2021
Aceptado: 14 nov 2022
DOI: https://doi.org/10.2478/sgem-2022-0028
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© 2023 Djamal Yahmi et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1
![Base shear versus roof displacement relationship [5, 22].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64737a264e662f30ba53f8cb/j_sgem-2022-0028_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250920%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250920T140454Z&X-Amz-Expires=3600&X-Amz-Signature=eb62ce48fb3ac20c57b455bf53a6e36c09aa88ca53d88701e3348d48263a6aa7&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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Figure 3
![Plastic hinges of a cross section [32].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/64737a264e662f30ba53f8cb/j_sgem-2022-0028_fig_003.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250920%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250920T140454Z&X-Amz-Expires=3600&X-Amz-Signature=878b2392b6baf5e69dea2d7a0662716bd17f53ae6ffa786ee47cbb07f5c21012&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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Figure 9

Modal periods and mass ratios of the analyzed XBF steel structures_
Three stories | λ1 = 1.93 | 0.41 | 0.14 | 0.09 | 0.86 | 0.11 | 0.02 | 0.22 |
λ2 = 1.56 | 0.36 | 0.13 | 0.08 | 0.87 | 0.10 | 0.02 | 0.23 | |
λ3 = 1.30 | 0.32 | 0.11 | 0.07 | 0.85 | 0.12 | 0.02 | 0.23 | |
Six stories | λ1 = 1.93 | 0.83 | 0.28 | 0.16 | 0.78 | 0.15 | 0.03 | 0.13 |
λ2 = 1.56 | 0.75 | 0.25 | 0.14 | 0.79 | 0.15 | 0.03 | 0.14 | |
λ3 = 1.30 | 0.68 | 0.22 | 0.12 | 0.77 | 0.16 | 0.04 | 0.16 | |
Nine stories | λ1 = 1.93 | 1.37 | 0.44 | 0.24 | 0.75 | 0.17 | 0.04 | 0.08 |
λ2 = 1.56 | 1.24 | 0.40 | 0.22 | 0.76 | 0.17 | 0.04 | 0.09 | |
λ3 = 1.30 | 1.10 | 0.34 | 0.19 | 0.75 | 0.19 | 0.04 | 0.10 |
XBF steel structures considered in parametric studies_
Three stories | λ1 = 1.93 | 220 (1–3) | 127X4 (1) + 108X3.6 (2) + 101.6X3.6 (3) |
λ2 = 1.56 | 240 (1–3) | 152.4X4 (1) + 133X4 (2) + 127X4 (3) | |
λ3 = 1.30 | 260 (1–3) | 193.7X4.5 (1) + 159X4 (2) + 139.7X4 (3) | |
Six stories | λ1 = 1.93 | 240 (1–2) + 220 (3–4) + 200 (5–6) | 127X4 (1–3) + 108X3.6 (4) + 101.6X3.6 (5) + 82.5X3.2 (6) |
λ2 = 1.56 | 260 (1–2) + 240 (3–4) + 220 (5–6) | 152.4X4 (1–2) + 139.7X4 (3) + 133X4 (4) + 127X4(5) + 101.6X3.6 (6) | |
λ3 = 1.30 | 280 (1–2) + 260 (3–4) + 240 (5–6) | 193.7X4.5 (1–2) + 168.3X4 (3) + 159X4 (4) + 139.7X4(5) + 127X4 (6) | |
Nine stories | λ1 = 1.93 | 260 (1–3) + 240 (4–6) + 220 (7–9) | 127X4 (1–4) + 108X3.6 (5–6) + 101.6X3.6 (7) + 88.9X3.2 (8) + 76.1X3.2 (9) |
λ2 = 1.56 | 280 (1–3) + 260 (4–6) + 240 (7–9) | 152.4X4 (1–3) + 139.7X4 (4) + 133X4 (5) + 127X4 (6–7) + 108X3.6 (8) + 88.9X3.2 (9) | |
λ3 = 1.30 | 320 (1–3) + 300 (4–6) + 280 (7–9) | 193.7X4.5 (1–4) + 159X4 (5) + 152.4X4 (6) + 139.7X4 (7) + 127X4 (8) + 108X3.6 (9) |