Abstract
The purpose of this study is to inspect the structure performance of half through arch timber highway bridge. The subjected bridge is Yusuhara Bridge constructed in Kochi prefecture on 2007. To investigate design factors, static and dynamic performance, vibration serviceability, rigidity of arch bridge and store of initial data for maintenance, the static and dynamic field tests of the subjected bridge were done with one dump truck in August 2007. The structural performance on static and dynamic behaviors were investigated in the terms such as deflection, response vibration, dynamic characteristics, dynamic increment factor and vibration serviceability. Furthermore, from the comparison of dynamic characteristics between the subjected bridge and 22 modern timber bridges measured by authors in the past in Japan, this study gives a valuable data to evaluate dynamic performance, dynamic characteristics and impact factor for modern timber highway bridges.
