Automatic Tsunami Barrier

Abstract The Anti-Tsunami Laboratory (ATL) invented and developed the Anti-Tsunami Door (ATD) barrier as an automatic tsunami barrier. In September 2018, ATL and Kyoto University tested a mid-scale model of a three-stage ATD unit and confirmed its performance: (1) functioning automatically (refer to Figure 9); (2) achieving reasonable wave height reduction, which is approximately 40%–80% that of a solid barrier of the same height; and (3) demonstrating reasonable strength for a wooden structure under the mid-scale model test conditions. ATL had planned to test a large-scale model of an ATD unit in Oregon State University in May 2020, but that test has been delayed owing to the COVID-19 pandemic. Because the wave pressure on the ATD unit is expected to be high during the large-scale model test, ATL requested that the Explosion Research Institute (ERI) simulate the wave pressure on a large-scale model ATD unit, and based on the results, ATL will reinforce the ATD unit. After testing the large-scale model unit, ATL will install ATD barriers along the coast of Japan, customizing the barrier for specific tsunami hazards.

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Ground settlement and wall deformation from a large scale model test on a single strutted sheet pile wall in sand

International Journal of Physical Modelling in Geotechnics ◽

10.1680/ijpmg.2006.060201 ◽

2006 ◽

Vol 6 (2) ◽

pp. 01-13 ◽

Cited By ~ 5

Author(s):

T. H. Tefera ◽

S. Nordal ◽

L. Grande ◽

R. Sandven ◽

A. Emdal

Keyword(s):

Model Test ◽

Large Scale ◽

Scale Model ◽

Sheet Pile ◽

Ground Settlement ◽

Large Scale Model ◽

Wall Deformation ◽

Sheet Pile Wall

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Investigation of Deformation of Shield Tunnel Based on Large-scale Model Test

Quarterly Report of RTRI ◽

10.2219/rtriqr.61.1_16 ◽

2020 ◽

Vol 61 (1) ◽

pp. 16-21

Author(s):

Kiwamu TSUNO ◽

Kaho KINOSHITA ◽

Takashi USHIDA

Keyword(s):

Model Test ◽

Large Scale ◽

Scale Model ◽

Shield Tunnel ◽

Large Scale Model

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Large scale model test investigation on wave run-up in irregular waves at slender piles

Coastal Engineering ◽

10.1016/j.coastaleng.2012.09.004 ◽

2013 ◽

Vol 72 ◽

pp. 69-79 ◽

Cited By ~ 13

Author(s):

J. Ramirez ◽

P. Frigaard ◽

T. Lykke Andersen ◽

L. de Vos

Keyword(s):

Model Test ◽

Large Scale ◽

Irregular Waves ◽

Scale Model ◽

Large Scale Model ◽

Test Investigation ◽

Run Up

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Recycle of resin-based analogue material for geo-mechanical model test

Waste Management & Research ◽

10.1177/0734242x18798701 ◽

2018 ◽

Vol 37 (2) ◽

pp. 142-148

Author(s):

Fan Pengxian ◽

Wang Jiabo ◽

Shi Yehui ◽

Wang Derong ◽

Tan Jinzhong ◽

...

Keyword(s):

Model Test ◽

Mechanical Model ◽

Large Scale ◽

Economic Benefits ◽

Model Tests ◽

Scale Model ◽

Large Scale Model ◽

Cyclic Utilization ◽

The Cost ◽

Recycled Material

Analogue materials are widely used to simulate prototype rocks in geo-mechanical model tests. The large amounts of solid waste generated by a large-scale model test has always posed problems for studies. The re-use of analogue materials can significantly reduce the cost of geo-mechanical model tests and the resulting environmental problems. However, despite the environmental and economic benefits, there have been few reports on the re-use of analogue materials. In this work, a recycling method for a resin-based analogue material is studied experimentally. More than 300 samples were prepared and tested. By adding a certain amount of resin in solution form to the recycled material, regenerated samples with properties consistent with those of the samples prior to recycling were obtained. Based on a comparative analysis of the test data, an equation is proposed for the calculation of the appropriate amount of resin addition in the recycling process. Thus, a simple and effective recycling method is established for a resin-based analogue material. Verification was performed by independent tests on three group samples with different proportions, and the possibility of repeated recycling was also confirmed. The proposed recycling method makes the cyclic utilization of resin-based analogue material possible and is helpful for reducing the cost and pollution of geo-mechanical model tests.

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