Abstract
The effect of near-field and soft-soil ground motions on structures with viscous damping systems was examined. Damping modification factors for damping ratios up to 100% of critical were obtained for sets of near-field and soft-soil ground motions and compared to the values presented in 2000 NEHRP Recommended Provisions. A study was carried out for the ductility demand in structures without and with damping systems, where the damped buildings were designed for a smaller base shear than conventional buildings in accordance with the 2000 NEHRP Provisions. Nonlinear response-history and simplified methods of the 2000 NEHRP Provisions were used to analyze single-degree-of-freedom systems and three-story moment frames with linear viscous and nonlinear viscous damping systems to acquire knowledge on the influence of near-field and soft-soil ground motions on the accuracy of simplified methods of analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 1217-1230 |
| Number of pages | 14 |
| Journal | Engineering Structures |
| Volume | 26 |
| Issue number | 9 |
| DOIs | |
| State | Published - Jul 2004 |
Keywords
- Damping systems
- Near-field
- Seismic design
- Soft-soil
- Yielding structures
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