33
| dc.contributor.advisor | 33 | |
| dc.contributor.author | Hernández, Francisco | |
| dc.contributor.author | Astroza, Rodrigo | |
| dc.contributor.author | Beltrán, Juan Felipe | |
| dc.contributor.author | Zhang, Xihong | |
| dc.contributor.author | Mercado, Vicente | |
| dc.coverage | DOI: 10.1016/j.jobe.2022.104034 | |
| dc.date | 2022 | |
| dc.date.accessioned | 05-01-2026 18:04 | |
| dc.date.available | 05-01-2026 18:04 | |
| dc.date.issued | 33 | |
| dc.description.abstract | An energy dissipation mechanism made of a cable-pulleys system placed in series with a spring-damper device (fluid viscous) is experimentally studied. The system aims to provide high damping ratios for all the structural modes by using a unique spring-damper device to dissipate the seismic energy of the entire structure (and all its structural modes). Shake table tests and pull-back tests are carried out on a scaled five-story structure to compare the dissipation capabilities provided by the proposed system. Therefore, the same structure is tested under different configurations that included: i) the structure itself without any energy mitigation device, ii) the structure with viscous dampers installed on each story, iii) the structure with the proposed cable-pulleys and the spring-damper system, and iv) the structure with the cable-pulleys system but without any dissipation device. The experimental results showed that the structure with the proposed system exhibits a highly nonlinear response (mainly explained by the cable-pulleys interaction) evidenced by the significant change of the structure's dynamic properties during the time. The Short-Time Transfer Function plots show that the structure's natural frequencies change significantly when the cable-pulleys system is included. Complementarily, a novel time-variant system identification approach, termed Mod-?(var), is proposed, which allows estimating the time-variant evolution of the structure's dynamic properties during seismic tests (natural frequencies, damping ratios, and mode shapes). Moreover, the Mod-?(var) approach also enables computing relevant engineering quantities such as the empirical response spectrum from experimental data. It is found that the analyzed energy dissipation system provides high damping ratios (>10%) for all the structural modes, allowing reducing the seismic demands in terms of the empirical response spectrum, inter-story drifts, inter-story shear forces, peak accelerations, and Housner Intensities at each floor. | |
| dc.identifier | https://investigadores.uandes.cl/en/publications/7a7b5574-dbe7-4f23-ada2-adc8f7f13836 | |
| dc.identifier.citation | 33 | |
| dc.identifier.uri | 33 | |
| dc.language | eng | |
| dc.language.iso | 33 | |
| dc.publisher | 33 | |
| dc.relation | 33 | |
| dc.rights | info:eu-repo/semantics/restrictedAccess | |
| dc.source | vol.51 (2022) date: 2022-07-01 | |
| dc.subject | Cable-pulleys spring-damper system | |
| dc.subject | Empirical response spectrum | |
| dc.subject | Energy dissipation | |
| dc.subject | MOD-?(VAR) Approach | |
| dc.subject | Normalized seismic modes | |
| dc.subject | System identification | |
| dc.subject | Time-variant modal parameters | |
| dc.title | 33 | |
| dc.title | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings | eng |
| dc.title | 33 | spa |
| dc.title | 33 | und |
| dc.type | 33 | |
| dc.type | Article | eng |
| dc.type | Artículo | spa |