Application of Precast System Buildings with Using Connection of Unbonded Post-tension and Local Dissipater Device

摘要

A precast connection concept, which is equivalent in ability but is more efficient compared to that of the isolation concept, was developed by Precast Seismic Structural System (PRESSS) in USA. This kind of connection uses the unbonded post-tension system and a replaceable dissipater device. The unbonded post-tension works to restore structural deformation back to its initial position after excitation caused by earthquakes, and the dissipater device acts like a replaceable fuse when the earthquake design load is exceeded. This concept was adopted to ACI 318 Code since 2002, NZS 3101:2006, and also in Indonesian Standard, SNI 7833-2012. The research,development, and application of this concept were carried out in Indonesia in 2013-2014, using local materials and an alternative sustainable earthquake precast system through the service life of the building.