Collapse or severe damage has been observed in many RC residential buildings with soft- first story at the previous earthquake disasters. This paper proposes a new technique for structural control of RC buildings with soft-first story by using HPFRCC devices,…
Collapse or severe damage has been observed in many RC residential buildings with soft- first story at the previous earthquake disasters. This paper proposes a new technique for structural control of RC buildings with soft-first story by using HPFRCC devices, which are placed beside the existing columns in the first 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 analysis, the seismic response of the buildings was successfully controlled to meet high level of structural performance requirements by using HPFRCC devices.