A comparison of the seismic performance of precast wall construction : emulation and hybrid approaches
Two geometrically identical half-scale precast concrete wall units were constructed and tested under reversed cyclic lateral loading. One unit was conventionally reinforced designed in accordance with NZS 3101: 1995 for full ductile response. The wall panel in this unit was grouted within a slot connection cast into the foundation beam. The other unit was part of a hybrid system that incorporated post-tensioned unbonded carbon fibre tendons and steel fibre reinforced concrete. Hysteretic energy dissipation devices were introduced by incorporating low yield strength tapered longitudinal reinforcement, acting as a fuse connection between the wall panel and the foundation beam. The geometry chosen for the walls was representative of a prototype four-storey building. Comparisons between the hybrid wall system and a precast conventionally reinforced specimen are made. Benefits of the hybrid structural system are highlighted in comparison with conventional monolithic construction.
SubjectsField of Research::09 - Engineering::0905 - Civil Engineering::090504 - Earthquake Engineering
- Engineering: Reports