原文传递
Influence of Stiffness and Damping Parameters of Passive Seismic Control Devices in One-Sided Rocking of Masonry Walls
| 题名： | Influence of Stiffness and Damping Parameters of Passive Seismic Control Devices in One-Sided Rocking of Masonry Walls |
| 正文语种： | eng |
| 作者： | Giresini, L.;Taddei, F.;Solarino, F.;Mueller, G.;Croce, P. |
| 作者单位： | Univ Pisa Dept Civil & Ind Engn Largo Lazzarino 1 I-56100 Pisa Italy;Tech Univ Munich Lehrstuhl Fuer Baumech Arcisstr 21 D-80333 Munich Germany;Univ Pisa Dept Energy Syst Terr & Construct Engn Largo Lazzarino 1 I-56100 Pisa Italy;Tech Univ Munich Lehrstuhl Fuer Baumech Arcisstr 21 D-80333 Munich Germany;Univ Pisa Dept Civil & Ind Engn Largo Lazzarino 1 I-56100 Pisa Italy |
| 关键词： | Rocking wall;Damped walls;Seismic passive control;Dissipaters;Shock absorbers;Out-of-plane |
| 摘要： | This paper analyzes the influence of horizontal damped and undamped restraints in terms of the amplification of the response of rocking masonry walls subjected to seismic excitations. It also makes a practical contribution to the design of antiseismic devices conceived to control rocking motion, avoiding or at least limiting undesirable response amplifications that would lead to local or global failure. A horizontal restraint, simulating an elastoplastic steel tie-rod, was coupled with a damper, whose action is included in a proposed equation of motion. Parametric analyses were performed for three typical facades of masonry buildings, showing that, if the stiffness of tie-rod increases, the seismic vulnerability of a rocking facade is not necessarily reduced. Therefore, the calculation of rocking spectra is recommended in order to identify stiffness ranges in which amplification could occur. A simple method for calculating the design damping coefficient of a shock absorber is proposed and the consequent mitigation of vulnerability is demonstrated in various analysis configurations. Graphs plotting time-dependent ratios between the energy dissipated by the shock absorber and the seismic input energy are shown to be a useful tool for quantifying the effectiveness of the shock absorber itself in dissipating energy. The reduction of these time-dependent ratios occasionally observed for specific earthquake time ranges reveals that adverse frequencies are occasionally present in seismic excitation and allows for the identification of the optimal damping coefficient. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 2 |
| 页码： | 04021257.1-04021257.14 |
相关文献
- Development of Controlled Rocking Masonry Walls with Energy Dissipation Accessible in a Steel Base
- Seismic design of precast concrete rocking wall systems with varying hysteretic damping
- Experimental Assessment of Controlled Rocking Masonry Shear Walls without Post-tensioning
- Structural Performance of Reinforced Concrete Walls under Fire Conditions
- Operational and Safety Characteristics of an Alternative Design, Space-Efficient One-Sided Interchange
- Unbonded Post-Tensioned Structural Masonry Wall with Rubber Interface for Limited-Damage Systems
检索历史
应用推荐
