Advanced Technologies Applied in Obayashi Technical Research Institute

Abstract

<p>Towards further development of the seismic engineering, two new buildings were constructed at the Obayashi Co. Technical Research Institute located in a suburb of Tokyo. The buildings incorporate the following three advanced seismic technologies.</p><p>First, an active base isolation system using an absolute vibration control technology is applied to the real full scale building for the first time in the world.</p><p>Secondly, ultra high strength steels (780 MPa and 1000 MPa) are utilized for the main columns. Section of the columns is reduced accordingly. It leads to free open space.</p><p>Finally, special dampers (friction slip damper “FSD” and friction slip damper with two levels of slip force “FSD2”) are utilized to improve seismic energy absorption.</p><p>These technologies provide superior seismic performance without losing freedom of planning.</p>