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HOME > Technology
> Facilities > High-speed concrete structure loading
apparatus |
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High-speed concrete structure loading apparatus |
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[Installed d: March in 1997] |
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| [Summary] |
 This
is a loading test apparatus controlled by an electric hydraulic servo-system.
Using hydraulic pressure as an energy transmission medium enable to realize large
capacity and high-speed loading. In addition , an electric signal transfer system
make it possible to operate complicated signals by utilizing electronics technology.This
apparatus is also controlled via displacement, acceleration and velocity feedback
scheme. |
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| [Objective] |
This is constructed for versatile loading test facility
in a structural engineering field. In particular, it is intended for concrete
structure experiments considering a large earthquake forces. |
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| [Specification] |
1) Actuator output: Static maximum ±1200 (kN)/Dynamic
maximum±800 (kN),
Stroke: ±125 (mm),
Piston speed: At reproduction of seismic wave 100 cm/s (max duration 20 seconds)/At
steady operation 12 cm/s,
Shaking frequency: DC to Maximum 30 (HZ)
2) Testing machine main column interval: 2800 (mm),
Actuator under space: 1000 (mm) to 3000 (mm),
Loading head: Length 5000 mm * Width 2400 (mm)
3) Hydraulic pressure: 21 (MPa), Discharge rate : 0 to 324 (l/min;
variable),
Motor capacity : 45 kW * 3 units, Oil tank : 3500 (liters)
4) Accumulator capacity : 3500 (l/unit), Number of units : 27 sets, Maximum discharge
rate : 3500 (l/min)
5) Instrument and control device, instrument system : Dynamic strain gauge (20
ch) A/D converter (16 bit, 64 ch),
Control system : Full-digital hydraulic servo controller, program-controlled by
a computer
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