SEISMIC DESIGN FOR SUPER HIGH-RISE BUILDING WITH DAMPERS USING MULTIPLE STEP OPTIMIZATION

Oil damper placement optimization and section optimization considering change of frame weight

Abstract

This paper proposes a seismic design method using optimization for super high-rise building with dampers. The method involves four steps:

1) Specifying frame stiffness distribution and natural period by optimizing the elastic response of moment frame to Lv1 seismic motion.

2) Specifying frame energy absorption performance by optimizing the elastic-plastic response of moment frame to Lv2 seismic motion.

3) With step 1) and 2) result, specifying damping device placement using placement optimization.

4) Based on step 3), specifying the member section using section optimization.

The method’s effectiveness is demonstrated by the result of analyzing a 100-meter-high building with oil dampers.