A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings
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...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier
2022
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/89085 |
| _version_ | 1848765156288364544 |
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| author | Hernandez, Francisco Astroza, Rodrigo Beltran, Juan Felipe Zhang, Xihong Mercado, Vicente |
| author_facet | Hernandez, Francisco Astroza, Rodrigo Beltran, Juan Felipe Zhang, Xihong Mercado, Vicente |
| author_sort | Hernandez, Francisco |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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-ζ(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-ζ(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. |
| first_indexed | 2025-11-14T11:30:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-89085 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:30:46Z |
| publishDate | 2022 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-890852022-09-23T07:38:39Z A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings Hernandez, Francisco Astroza, Rodrigo Beltran, Juan Felipe Zhang, Xihong Mercado, Vicente Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering Energy dissipation Cable-pulleys spring-damper system System identification Time-variant modal parameters Normalized seismic modes Empirical response spectrum MOD-?(VAR) Approach FRAME STRUCTURES SEISMIC PROTECTION 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-ζ(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-ζ(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. 2022 Journal Article http://hdl.handle.net/20.500.11937/89085 10.1016/j.jobe.2022.104034 English Elsevier restricted |
| spellingShingle | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering Energy dissipation Cable-pulleys spring-damper system System identification Time-variant modal parameters Normalized seismic modes Empirical response spectrum MOD-?(VAR) Approach FRAME STRUCTURES SEISMIC PROTECTION Hernandez, Francisco Astroza, Rodrigo Beltran, Juan Felipe Zhang, Xihong Mercado, Vicente A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title_full | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title_fullStr | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title_full_unstemmed | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title_short | A experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| title_sort | experimental study of a cable-pulleys spring-damper energy dissipation system for buildings |
| topic | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering Energy dissipation Cable-pulleys spring-damper system System identification Time-variant modal parameters Normalized seismic modes Empirical response spectrum MOD-?(VAR) Approach FRAME STRUCTURES SEISMIC PROTECTION |
| url | http://hdl.handle.net/20.500.11937/89085 |