Real time vibration measurement and inverse analysis for dynamic properties of an axisymmetric masonry structure

Historic buildings are public symbols, standing as sacred reminders. Many of them have been recognized World Heritage Sites. In this study, real time vibration measurement an important axisymmetric masonry pagoda was performed. With the measured data, inverse analysis proposed to backward determine its damping and natural period. The algorithm utilizes Duhamel’s integration method for solving equation motion Gauss-Newton minimize sum-of-squares error between calculated real-time accelerations structure. Four distant earthquake-induced vibrations were recorded used analysis. results show that dynamic parameters determined by agree with those obtained from previous study adopting finite element properties two perpendicular directions slightly different, indicating non-homogenous body structure or there would be a particular damage zone. From results, onsite investigation can specifically identified. summary, continuous structural health monitoring time-dependent deterioration historic possible analytical algorithm.