原文传递
Displacements and Forces in Structures with Inerters when Subjected to Earthquakes
| 题名： | Displacements and Forces in Structures with Inerters when Subjected to Earthquakes |
| 正文语种： | 英文 |
| 作者： | Nicos Makris, M.ASCE1; Gholamreza Moghimi2 |
| 作者单位： | 1Professor, Dept. of Civil and Environmental Engineering, Southern Methodist Univ., Dallas, TX 75275; formerly, Dept. of Civil, Environmental, and Construction Engineering, Univ. of Central Florida, Orlando, FL 32816 (corresponding author). 2Doctoral Candidate, Dept. of Civil, Environmental, and Construction Engineering, Univ. of Central Florida, Orlando, FL 32816. |
| 关键词： | structure；supplement；formulation；transferrin；mechanica；strategy；compliance；proportion；forces；strategies |
| 摘要： | This study investigates the seismic response of a two-degrees-of-freedom structure with supplemental rotational inertia at its first story. The proposed response-modification strategy uses an inerter—a mechanical device the resisting force of which is proportional to the relative acceleration between the first story and the ground. This arrangement complements the traditional supplemental damping strategies, which are also examined in this work. The paper develops a time-domain and a frequency-domain formulation for the response analysis and shows that the seismic protection of structures with supplemental rotational inertia suppresses effectively interstory drifts at the expense of transferring appreciable forces at the support of the inerter. Both a single inerter and a pair of inerters that can only resist the motion of the structure are examined. The paper examines the extent to which a compliant support of the inerter affects the dynamics of the structure and concludes that as the compliance of the support frame increases, a single inerter may lead to a more favorable response. The proposed response-modification strategy is attractive for cases with large relative displacement demands. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 2 |
| 页码： | 1-14 |
相关文献
- Peak Sliding Displacements of Sliding Base Structures Subjected to Earthquake Excitation
- Seismic Performance of a Novel Single and Double Spring-Based Piston Bracing
- Rotation Capacity of 1-Shaped Beams under Alternating Axial Forces Based on Buckling-Mode Transitions
- Adaptive Stiffness Structures with Dampers: Seismic and Wind Response Reduction Using Passive Negative Stiffness and Inerter Systems
- The Importance of Proper Attribution
- Estimating Axial Force Demand in Columns of Shear-Type Structure Subjected to Earthquake-Base Excitation
检索历史
应用推荐
