extraction of stiffness submatrix of shear and nonshear buildings with local measurement under base excitation

Vibration based system identification (vb-si) as a powerful tool to disclosure a mathematical expression of dynamic behavior of structures has been extensively studied in recent years for structural damage assessment. among developed strategies of vb-si for extracting system dynamic characteristics, output-only methods are becoming more and more popular due to the clear advantages of the technology: there is no need to the complex excitation tools, the technology isapplicable to a wide range of structures and performing the test approach is much easier, and also of a great importance is the structure remains under its operating condition during the test (priori et al., 2018)