Seismic Intervention and Dynamic Testing of an Arch Bridge
This work presents the dynamic tests on a retrofitted masonry arch bridge. The Gresal Bridge, located in the North-East of Italy, was highly exposed to seismic hazard, due to the slenderness of its high piers. A retrofit intervention has been carried out, and a new rc slab has been built under the pavement, anchored to the piers with high strength vertical ties and restrained at the abutments, to create a new resistance arrangement withstanding inertial forces. The dynamic behaviour has been initially assessed with numerical models comparing the response of the bridge before and after the repair, and has subsequently been tested by the Output-Only technique to detect the variation of the modal response induced by the strengthening intervention. The dynamic tests have shown the structure to be more rigid than expected and, after calibration, a good agreement to exist between the numerical frequencies and the experimental records captured on the retrofitted bridge.
Seismic Retrofit Dynamic Identification Structural Identification Masonry Arch Bridge
Kleidi lslami Giovanni Tecchio Claudio Modena
University of Padua, Department of Structural and Transportation Engineering, Padua, Italy
国际会议
上海
英文
1159-1164
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）