E-Defense
E-Defense
Utilizing the Three-Dimensional Full-Scale Earthquake Testing Facility, life-size structures can be tested under complex three-dimensional motions such as that of the 1995 Hyogo-ken Nanbu earthquake so that their collapsing behaviors can be observed in detail. E-Defense aims to offer an ultimate tool of verifi cation for the various research and development efforts that are currently being carried out.
Three-Dimensional Full-Scale Earthquake Testing Facility is nicknamed "E-Defense." The symbol E indicates Earth, suggesting the critical need to promote research and development into ways to lessen the effects of earthquakes and to protect lives and property on a global scale. The logo represents a ruptured earth and an earthquake, while the three colors suggest the three-dimensional motion that can be reproduced by E-Defense.
Bird's-Eye View of E-Defense and Main Facilities
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Main Hydraulic Pump Unit
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Main Accumulator Unit
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Experiment
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Shake Table (15m X 20m)
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Two 400tf Overhead Cranes
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Operation Building
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Preparation Building
Specifi cation of Shake Table
- Table Size
- 20m x 15m
- Payload
- 12MN (1200tonf)
- Shaking Direction
- X, Y –Horizontal Z -Vertical
- Max. Acceleration
- （ X, Y –Horizontal ）900cm/s2 （ Z -Vertical ）1500cm/s2
- Max. Velocity
- （ X, Y –Horizontal ） 200cm/s （ Z -Vertical ） 70cm/s
- Max. Displacement
- （ X, Y –Horizontal ） ±100cm （ Z -Vertical ） ±50cm
