| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2010: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2009: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2008: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
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| Research Abstract |
A pipe-in-pipe filled with sand was developed as an innovative structure for chilled gas pipeline in northern cold regions where a plenty of natural gas is reserved. As a result of the study, it is confirmed that the pipe-in-pipe can comply with environmental change due to increased ductility by sand because it allows large deformation. In addition, self recovery in flexural rigidity and anti-leaking becomes possible by artificial freezing and thawing of surrounding soil.
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