Shaking Table Test on Seismic Response Properties of “Shicras,” Stones Wrapped in Vegetable Fiber Bags
Hiroshi Fukuyama*1, Masami Fujisawa*2, Akio Abe*3,
Toshikazu Kabeyasawa*4, Zen Shirane*5, Taiki Saito*6,
and Zenon Aguilar*7
*1Department of Structural Engineering, Building Research Institute, 1 Tachihara, Tsukuba, Ibaraki 305-0802, Japan
*2Tsukuba University of Technology, 4-113 Kariya-cho, Usiku-shi, Ibaraki 300-1235, Japan
*3Tsukuba General Laboratory, Tokyo Soil Research Co., Ltd., 2-1-12 Umezono, Tsukuba, Ibaraki 305-0045, Japan
*4Building Department, National Institute for Land and Infrastructure Management, MLIT, Japan
*5Photographer / Journalist
*6Toyohashi University of Technology, Japan
*7Faculty of Civil Engineering, National University of Engineering, Peru
Unique foundations consisting of stones wrapped in vegetable fiber bags called shicra (“woven”) have been found in many Pacific coast ruins constructed about 5,000 years ago as shrines in Peru. A shaking table test was conducted to investigate earthquake response properties of these shicra foundations. Results showed that in base isolation performance, shicra foundations “rolled” during earthquake vibration the same as in the case of roller base isolation systems.
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