The Artemis Program, for constructing the lunar
base, is in progress. How to design and construct architectural and civil
engineering structures in the lunar environment has become an important issue.
The lunar surface is covered with soft sand, called regolith, and it is
required to protect lunar bases and structures, as well as internal precision
equipment, against vibrational disturbances such as moonquakes and meteorite
collisions. Therefore, in this study, the static and cyclic triaxial
compression tests of the regolith simulant were conducted. The reference strain
and equivalent damping factor of the regolith simulant were smaller compared to
sandy soil on Earth. In addition, a shaking table test using model specimens
was conducted on the response properties of regolith ground alone and
structures set on regolith ground. The buried foundation and pile foundation
notably suppressed the horizontal response attributed to the rocking component
compared to a direct foundation.
References
[1]
National Aeronautics and Space Administration, Lyndon B. Johnson Space Center (1975) Apollo Program Summary Report. National Aeronautics and Space Administration, Washington DC.
[2]
National Aeronautics and Space Administration (2020) Artemis Plan—NASA’s Lunar Exploration Program Overview. National Aeronautics and Space Administration, Washington DC.
[3]
Special Research Committee on Space Habitat, Architectural Institute of Japan (2023) Report of the Special Research Committee on Space Habitat. Architectural Institute of Japan, Tokyo. (In Japanese)
[4]
Matsushima, T. and Kobayashi, T. (2021) Space Exploration and Geotechnical Engineering—Chapter 4—Mechanics of Planetary Regolith. Geotechnical Engineering Magazine, 69, 43-51. (In Japanese)
[5]
Kobayashi, T. and Fukagawa, R. (2021) Space Exploration and Geotechnical Engineering—Chapter 5—Space Explorations and Geotechnical Engineering. Geotechnical Engineering Magazine, 69, 89-97. (In Japanese)
[6]
Miyamoto, H., Tachibana, S., Hirata, N. and Sugita, S. (2008) Planetary Geology. University of Tokyo Press, Tokyo. (In Japanese)
[7]
Heiken, G.H., Vaniman, D.T. and French, B.M. (1991) Lunar Source Book: A User’s Guide to the Moon. Cambridge University Press, Cambridge.
[8]
Ohtake, M., Saiki, K. and Miyamoto, H. (2021) Space Exploration and Geotechnical Engineering—Chapter 3—Formation of the Lunar and Planetary Surface. Geotechnical Engineering Magazine, 69, 57-65. (In Japanese)
[9]
Kanamori, H., Udagawa, S., Yoshida, T., Matsumoto, S. and Takagi, K. (1998) Properties of Lunar Soil Simulant Manufactured in Japan. Space, 98, 462-468. https://doi.org/10.1061/40339(206)53
[10]
Fujimura, A. (1991) Seismological Exploration on Extraterrestrial Bodies. Journal of the Seismological Society of Japan, 2nd Series, 44, 41-51. (In Japanese) https://doi.org/10.4294/zisin1948.44.Supplement_41
[11]
Lammelein, D.R., Latham, G.V., Dorman, J., Nakamura, Y. and Ewing, M. (1974) Lunar Seismicity, Structure, and Tectonics. Reviews of Geophysics and Space Physics, 12, 1-21. https://doi.org/10.1029/RG012i001p00001
[12]
Lammelein, D.R. (1977) Lunar Seismicity and Tectonics. Physics of the Earth and Planetary Interiors, 14, 224-273. https://doi.org/10.1016/0031-9201(77)90175-3
[13]
Goins, N.R., Dainty, A.M. and Toksöz, M.N. (1981) Lunar Seismology: The Internal Structure of the Moon. Journal of Geophysical Research, 86, 5061-5074. https://doi.org/10.1029/JB086iB06p05061
[14]
Nakamura, Y., Latham, G.V. and Dorman, H.J. (1982) Apollo Lunar Seismic Experiment—Final Summary. Journal of Geophysical Research, 87, A117-A123. https://doi.org/10.1029/JB087iS01p0A117
[15]
Araki, H. (1994) Elucidation of Moonquake Generation Patterns and Application to Moonquake Observations in LUNAR-A Project. Ph.D. Thesis, The University of Tokyo, Tokyo. (In Japanese)
[16]
Miyamoto, Y., Miura, K., Scott, R.F. and Hushmand, B. (1992) Pile Foundation Response in Liquefiable Soil Deposit during Strong Earthquakes. Journal of Structural and Construction Engineering (Transactions of AIJ), No. 439, 49-63. https://doi.org/10.3130/aijsx.439.0_49
[17]
The Japanese Geotechnical Society (2020) Japanese Standards and Explanations of Laboratory Tests of Geomaterials (The First Revised Edition). The Japanese Geotechnical Society, Tokyo. (In Japanese)
[18]
Koyamada, K., Miyamoto, Y. and Miura, K. (2003) Nonlinear Property for Surface Strata from Natural Soil Samples. Proceedings of the 38th Japan National Conference on Geotechnical Engineering, Akita, 2-4 July 2003, 2077-2078. (In Japanese)
