HPFRCC DEVICE FOR STRUCTURAL CONTROL OF RC BUILDINGS WITH SOFT STORY

摘要

Collapse or severe damage has been observed in many RC residential buildings with soft story at the previous earthquake disasters. This paper proposes a new technique for structural control of RC buildings with soft story by using HPFRCC devices, which are placed beside the existing columns in the ground story. The advantage of the HPFRCC devices is selective structural performance by varying the configuration, bar arrangements and type of materials used. Also, since the HPFRCC devices can resist to the axial force, axial force acting in the existing columns due to overturning moment can be reduced. As the result of dynamic analysis, the response drift of the buildings was successfully controlled to meet high level of structural performance requirements by using HPFRCC devices.