| Multiple failure function based fragility curves for structures equipped with TMD |
| |
| 作者姓名： | Sina Bakhshinezhad Mohtasham Mohebbi |
| |
| 作者单位： | Faculty of Engineering |
| |
| 摘 要： | This paper presents a procedure to develop fragility curves of structures equipped with TMD considering multiple failure functions.The failure criteria considered are maximum inter-story drift ratio as a safety criterion,maximum absolute acceleration as a convenience criterion and TMD stroke length.The relationship between intensity measure and responses of the structure was assumed to follow the power-law model,and a regression analysis was used to estimate its properties.A nonlinear eight-story shear building subjected to near-fault earthquakes was used for the numerical studies.Fragility curves using multiple and single failure functions for an uncontrolled structure and a structure equipped with optimal TMDs were developed.Numerical analysis showed that using multiple failure functions led to increasing the fragility when compared with using the single failure function for both the uncontrolled and controlled structures.However,TMDs slightly reduced the seismic fragility and have the capability to improve the reliability of the structure.Also,it was found that the fragility was significantly influenced by the values of the capacity thresholds of both the acceleration of the structure and TMD stroke length,which should be selected by considering the target performance and application of the structure and control device.
|
| 关 键 词： | fragility curves multiple failure function passive control tuned mass dampers |
Multiple failure function based fragility curves for structures equipped with TMD |
| |
| Sina Bakhshinezhad,Mohtasham Mohebbi.Multiple failure function based fragility curves for structures equipped with TMD[J].Earthquake Engineering and Engineering Vibration,2021,20(2):471-482. |
| |
| Authors: | Bakhshinezhad Sina Mohebbi Mohtasham |
| |
| Institution: | Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran |
| |
| Abstract: | This paper presents a procedure to develop fragility curves of structures equipped with TMD considering multiple failure functions. The failure criteria considered are maximum inter-story drift ratio as a safety criterion, maximum absolute acceleration as a convenience criterion and TMD stroke length. The relationship between intensity measure and responses of the structure was assumed to follow the power-law model, and a regression analysis was used to estimate its properties. A nonlinear eight-story shear building subjected to near-fault earthquakes was used for the numerical studies. Fragility curves using multiple and single failure functions for an uncontrolled structure and a structure equipped with optimal TMDs were developed. Numerical analysis showed that using multiple failure functions led to increasing the fragility when compared with using the single failure function for both the uncontrolled and controlled structures. However, TMDs slightly reduced the seismic fragility and have the capability to improve the reliability of the structure. Also, it was found that the fragility was significantly influenced by the values of the capacity thresholds of both the acceleration of the structure and TMD stroke length, which should be selected by considering the target performance and application of the structure and control device. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
