About us
Overview of E-Defense
Overview
- E-Defense is the world’s largest shaking table test facility, capable of shaking full-scale structures weighing up to 1,200 tons using three-dimensional seismic motions until they collapse.
- The 300m2 shaking table can accurately reproduce the ground motions recorded during the 1995 Kobe Earthquake and the 2011 Tohoku Earthquake.
- Since beginning operation in 2005, the facility has successfully conducted 127 experiments without accident. (As of May 20, 2024)
- Available as a shared facility for use by various institutions (34 joint research projects, 52 facility rentals).
- Total construction cost: approx. 45 million yen.
- Promoting research and development (in-house and joint research) as well as facility rental by utilizing experimental data that accurately reproduces behavior under real-world conditions at E-Defense (including damage and response of countermeasure technologies).
Logo
The nickname “E-Defense,” with the “E” representing Earth, expresses the expectation for research and development aimed at preventing disasters on a global scale and protecting lives and property.
The logo depicts cracks in the ground and the occurrence of earthquakes, as well as the three-dimensional motion of the three-dimensional earthquake testing facility, represented in three colors.
Basic Specifications
| Items | Specifications | |
|---|---|---|
| Maximum load capacity | 1,200ton | |
| Table size | 20m×15m=300m2 | |
| Driving type | Horizontal | Vertical |
| Max acceleration | 900cm/s2 | 1,500cm/s2 |
| Max velocity | 200cm/s | 70cm/s |
| Max displacement | ±100cm | ±50cm |