Seismic performance evaluation of buckling-restrained braced RC frames considering stiffness and strength requirements and low-cycle fatigue behaviors

2021 ◽  
Vol 239 ◽  
pp. 112359
Author(s):  
Huiming Chen ◽  
Jiulin Bai
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Seismic Performance Evaluation ◽  
Rc Frames

Study on the Method of Structural Seismic Performance Evaluation Based on the Damage Spectra

2010 ◽  
Vol 163-167 ◽  
pp. 4324-4330
Author(s):  
Jun Teng ◽  
Hu Bing Tu
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Structural Damage ◽  
Evaluation Method ◽  
Low Cycle Fatigue ◽  
Time History ◽  
Seismic Damage ◽  
Hysteretic Energy ◽  
Seismic Performance Evaluation ◽  
The Impact

Park-Ang seismic damage model is increasingly concerned due to it considers not only maximum elasto-plastic deformation, but also low cycle fatigue accumulated hysteretic energy, while research on the method of seismic performance evaluation based on the model is still rare. Therefore, a new evaluation method on the basis of damage spectra is proposed in this paper. Damage spectra of site I considering three kinds of ultimate deformation ductility factor are built firstly, and then transformation relationship between damage of MDOF and SDOF of frame structures is researched. Lastly, procedure of seismic damage evaluation on the structure is proposed. An example is used to confirm the validity of the spectra-based seismic performance evaluation method. The example analysis shows that: the method proposed here is reasonable to consider the impact of the cumulative hysteretic energy on the structural damage. The results from the method have good consistency with the time history analysis results. It can assess the extent of structural damage from the statistical viewpoint.

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