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multiple failure function based fragility curves for structures equipped with TMD

Earthquake Engineering and Engineering Vibration 2021年第2期20卷 471-482页

作者： Sina Bakhshinezhad Mohtasham Mohebbi Faculty of Engineering University of Mohaghegh ArdabiliArdabilIran

This paper presents a procedure to develop fragility curves of structures equipped with TMD considering multiple failure *** failure criteria considered are maximum inter-story drift ratio as a safety criterion,maximum absolute acceleration as a convenience criterion and TMD stroke *** 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 *** curves using multiple and single failure functions for an uncontrolled structure and a structure equipped with optimal TMDs were *** 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 ***,TMDs slightly reduced the seismic fragility and have the capability to improve the reliability of the ***,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

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