Ultimate strength of shallowly embedded anchor bolts under cyclic loading (Part.1 Experimental procedure and test results of headed anchors)

摘要

During Tohoku earthquake in 2011 and Kumamoto earthquakernin 2016, damages of connection of nonstructural componentsrnwere reported1). In order to investigate ultimate strength ofrnanchor bolts, experimental studies2) etc. and numerical analyses3)rnetc. have been conducted under monotonic loading conditions.rnHowever, ultimate strength under cyclic loading of tension andrnshear, which corresponds with loading conditions underrnearthquakes, is not clarified yet. Since anchor bolts forrnconnections of nonstructural components are shallowlyrnembedded, it may be concerned that embedded part on surfacernconcrete is damaged under earthquakes, which causes poorrnultimate strength. In this study, in order to investigate therninfluence of cyclic loading on ultimate strength of shallowlyrnembedded anchor bolts, cyclic loading tests were conducted.