Flexible earthquake-resistant skyscraper (Kasumigaseki Building)
Rascacielos flexible antisísmico (edificio Kasumigaseki)
- Date
- 1968 · confidence high
- Place
- Tokyo, Japan
- Credited to
- Kiyoshi Muto and Mitsui Fudosan
- Field
- Tools
What it is
A 36-storey, 147 m tower whose flexible, ductile steel structure dissipates seismic energy through large controlled deformations rather than resisting with stiffness. It was designed with dynamic analysis of seismic response.
Japan capped buildings at 31 m until 1963; Kasumigaseki was the country's first skyscraper.
What it led to
- skyscrapers in seismic zones such as Tokyo
- ductility-based earthquake design theory
- Japanese tall-building codes