Seismic fragility analysis of self-centering segmental piers with mortise-tenon shear keys

To comprehensively consider and study the seismic performance of self-center mortise-tenon segmental pier, its vulnerability under earthquake is evaluated. The reliability model verified by comparing cyclic pseudo-static test results with finite element models. used as basis for analysis. Taking maximum displacement pier top a damage index. Different states are described. index limits μcy1, xmlns:mml="http://www.w3.org/1998/Math/MathML">μcy, xmlns:mml="http://www.w3.org/1998/Math/MathML">μc2, xmlns:mml="http://www.w3.org/1998/Math/MathML">μcmax different levels determined. time history analysis cast-in-place piers actions carried out using software. probabilistic demand established through IDA curves. And out. influence various parameters on studied changing longitudinal reinforcement ratio, axial compression aspect ratio. show that two types designed according to principle equivalence similar states. It can be considered it has better performance. ratio have great impact piers.