A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic performance of suspended‐floor structures with viscous dampers considering acceptable interstory drift
https://orcid.org/0000-0001-8120-8003
SummaryNumerical studies of suspended‐floor structures were conducted, and viscous dampers were applied to improve their seismic performances. The following issues were analyzed under 20 earthquake records: seismic responses of the primary structure and suspended floors, the distributions of the damping coefficientc0, and the interstory stiffness of the suspended floors. There was a significant reduction in the roof drift and the base shear force of the cores after replacing the steel bars with viscous dampers. The suspended‐floor structures with viscous dampers exhibited an optimalc0. The suspended‐floor structure with a triangular distribution ofc0showed a smaller seismic response than the one with a uniform distribution ofc0. Under the design‐based earthquake, there was complete damage of nonstructural components in they‐direction. Hence, applications of diagonal steel braces within the 1st to 10th floors were suggested to increase the lateral stiffness of the suspended floors in they‐direction. The application of diagonal steel braces reduced the story driftSdof the suspended floors, resulting in slight damage to nonstructural components under the design basis earthquake (DBE) hazard level. However, the roof floor, which contains electrical and mechanical components, exhibited an increase inSdafter the application of the diagonal steel braces. With increasing stiffness of the diagonal brace, the story drift profile of the suspended floors tended to be uniform, and the suspended‐floor structures with the uniform distribution ofc0exhibited seismic performances closer to those of the suspended‐floor structures with the triangular distribution ofc0.
Seismic performance of suspended‐floor structures with viscous dampers considering acceptable interstory drift
https://orcid.org/0000-0001-8120-8003
SummaryNumerical studies of suspended‐floor structures were conducted, and viscous dampers were applied to improve their seismic performances. The following issues were analyzed under 20 earthquake records: seismic responses of the primary structure and suspended floors, the distributions of the damping coefficientc0, and the interstory stiffness of the suspended floors. There was a significant reduction in the roof drift and the base shear force of the cores after replacing the steel bars with viscous dampers. The suspended‐floor structures with viscous dampers exhibited an optimalc0. The suspended‐floor structure with a triangular distribution ofc0showed a smaller seismic response than the one with a uniform distribution ofc0. Under the design‐based earthquake, there was complete damage of nonstructural components in they‐direction. Hence, applications of diagonal steel braces within the 1st to 10th floors were suggested to increase the lateral stiffness of the suspended floors in they‐direction. The application of diagonal steel braces reduced the story driftSdof the suspended floors, resulting in slight damage to nonstructural components under the design basis earthquake (DBE) hazard level. However, the roof floor, which contains electrical and mechanical components, exhibited an increase inSdafter the application of the diagonal steel braces. With increasing stiffness of the diagonal brace, the story drift profile of the suspended floors tended to be uniform, and the suspended‐floor structures with the uniform distribution ofc0exhibited seismic performances closer to those of the suspended‐floor structures with the triangular distribution ofc0.
Seismic performance of suspended‐floor structures with viscous dampers considering acceptable interstory drift
https://orcid.org/0000-0001-8120-8003
SummaryNumerical studies of suspended‐floor structures were conducted, and viscous dampers were applied to improve their seismic performances. The following issues were analyzed under 20 earthquake records: seismic responses of the primary structure and suspended floors, the distributions of the damping coefficientc0, and the interstory stiffness of the suspended floors. There was a significant reduction in the roof drift and the base shear force of the cores after replacing the steel bars with viscous dampers. The suspended‐floor structures with viscous dampers exhibited an optimalc0. The suspended‐floor structure with a triangular distribution ofc0showed a smaller seismic response than the one with a uniform distribution ofc0. Under the design‐based earthquake, there was complete damage of nonstructural components in they‐direction. Hence, applications of diagonal steel braces within the 1st to 10th floors were suggested to increase the lateral stiffness of the suspended floors in they‐direction. The application of diagonal steel braces reduced the story driftSdof the suspended floors, resulting in slight damage to nonstructural components under the design basis earthquake (DBE) hazard level. However, the roof floor, which contains electrical and mechanical components, exhibited an increase inSdafter the application of the diagonal steel braces. With increasing stiffness of the diagonal brace, the story drift profile of the suspended floors tended to be uniform, and the suspended‐floor structures with the uniform distribution ofc0exhibited seismic performances closer to those of the suspended‐floor structures with the triangular distribution ofc0.
Seismic performance of suspended‐floor structures with viscous dampers considering acceptable interstory drift
Structural Design Tall Build
Zeng, Bin (author) / Gao, Jingwei (author) / Qing, Yuan (author) / Wang, Chun‐Lin (author) / Sun, Xun (author)
2022-03-01
Article (Journal)
Electronic Resource
English
Generalized Interstory Drift Spectrum
| Online Contents | 2006
Generalized Interstory Drift Spectrum
| British Library Online Contents | 2006
Critical Assessment of Interstory Drift Measurements
| British Library Online Contents | 2010
Critical Assessment of Interstory Drift Measurements
| Online Contents | 2010