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Seismic-resistant Contest |
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All the models for the same student level will be tested simultaneously on the shaking table under simulated earthquakes. The shakinglevel for the first test will be very small, and then will be increased sequentially in a series of tests. For the final test, the peak acceleration will be up to 1500 gal.
The shaking table at NCREE can produce a wide range of earthquakes with different frequencies and shaking levels.
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- The models will be tested at most 9 rounds of shaking tests. The maximum accelerations at each round are 250, 400, 750, 1000, 1100, 1200, 1300, 1400, and 1500(gal) .
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- The models that can survive the shaking
witha maximum acceleration of 400gal (equivalent
to an earthquake
with intensity VII) will receive a Quake-Resistant Award.
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- Only the models that can survive a shaking of 1000gal are eligible for the ranking. The shaking test will stop once all the models are collapsed or the maximum acceleration has reached 1500gal.
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Disqualification |
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| The model will be taken as disqualified under following conditions: |
- Complete collapse of the model.
- Collapse of one or more stories.
- The model has deformed excessively.
- Severe damage of the model.
- Half or more than half of the columns are detached from the base board.
- Any of the steel blocks fall off from one of the floors.
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Efficiency Ratio |
The score of the competition is based on the efficiency ratio, which is calculated by dividing the maximum intensity the model system survives (I)
by its mass (MM－MB＋MP; including the penalty weights but excluding the weights of the base board and the mass blocks). A higher efficiency ratio means that the model can survive a stronger
earthquake using less amount of material; therefore, the model system is more efficient and will be selected as the winner.
The efficiency ratio is defined as follows:
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where: |
| I = Maximum intensity the model system survives |
| MM = Total mass of the model system (excluding steel blocks) |
| MB= Mass of the base board |
| MP= Weight penalty |
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