No abstract

No abstract

No abstract

Based Based Based Based on on on on stochastic stochastic stochastic stochastic subspace subspace subspace subspace method, method, method, method, the the the the natural natural natural natural frequency frequency frequency frequency of of of of the the the the bridge bridge bridge bridge arch arch arch arch rib, rib, rib, rib, damping damping damping damping ratios ratios ratios ratios and and and and vibration vibration vibration vibration mold mold mold mold parameter parameter parameter parameter was was was was obtained obtained obtained obtained by by by by modal modal modal modal parameter parameter parameter parameter identification identification identification identification of of of of a a a a concrete concrete concrete concrete filled filled filled filled steel steel steel steel tubular tubular tubular tubular arch arch arch arch bridge bridge bridge bridge under under under under ambient ambient ambient ambient excitation, excitation, excitation, excitation, and and and and the the the the Midas Midas Midas Midas Civil Civil Civil Civil finite finite finite finite element element element element software software software software was was was was used used used used to to to to establish establish establish establish a a a a computational computational computational computational model model model model assessment assessment assessment assessment and and and and health health health health monitoring monitoring monitoring monitoring of of of of the the the the bridge. bridge. bridge. bridge. stochastic stochastic stochastic subspace subspace subspace subspace method; method; method; method; arc arc arc arc bridge bridge bridge bridge rib. rib. rib. rib.