耐震壁

[2083] FIBER-BASED ANALYSIS OF REINFORCED CONCRETE WALLS WITH END REGION CONFINEMENT: SENSITIVITY TO MODELING CHOICES

KOSE Emine¹, SUBEDI Naresh¹, Kono Susumu¹, MUKAI David² (1.Tokyo Institute of Technology 2.University of Wyoming)

キーワード：concrete confinement、fiber model、response sensitivity、plastic hinge length、stress-strain relationship

A number of stress-strain relationships for concrete and expressions to calculate the plastic hinge length (lph) have been suggested for fiber-based analysis of RC walls. However, no consensus exists regarding the appropriate modeling combination to accurately reproduce the flexural response. Three reinforced concrete walls with different end confinements were numerically modeled to study the effects of stress-strain relation of concrete and the equivalent plastic hinge length on the load-drift relations. Best combinations of stress-strain relationship (for concrete) and lph are identified for the walls considered.