Sophistication of evaluation method for the long-term performance of granular base course subjected to freeze-thaw history in cold regions
| Project/Area Number |
20360206
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
ISHIKAWA Tatsuya Hokkaido University, 大学院・工学研究院, 准教授 (60359479)
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| Co-Investigator(Kenkyū-buntansha) |
MIURA Seiichi 北海道大学, 大学院・工学研究院, 教授 (00091504)
YOKOHAMA Shouji 北海道大学, 大学院・工学研究院, 助教 (50299731)
KAMEYAMA Shuichi 北海道工業大学, 空間創造学部, 教授 (30295894)
YAMASHITA Satoshi 北海道工業大学, 空間創造学部, 准教授 (10224833)
ONO Takashi 北海学園大学, 工学部, 教授 (10142689)
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| Co-Investigator(Renkei-kenkyūsha) |
ABE Ryuji 独立行政法人土木研究所, 寒地道路研究グループ, 主任研究員 (80414209)
SEKINE Etsuo (財)鉄道総合技術研究所, 軌道技術研究部, 主任研究員(GL) (00425969)
HACHIYA Yoshitaka 独立行政法人港湾空港技術研究所, 空港研究センター, センター長 (60356053)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2008: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Keywords | 地盤工学 / 舗装工学 / 交通荷重 / 凍結融解 / 礫質土 / 路盤 / 主応力軸回転 / 繰返しせん断 |
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| Research Abstract |
In this study, we proposed new testing methods for the evaluation of the deformation-strength characteristics of base course materials subjected to freeze-thaw action, and examined the mechanical behavior of granular base before and after freeze-thawing and under freezing. We also evaluated the influences of the change in the performance of granular base due to freeze-thawing on the fatigue breaking of pavements in cold regions by applying the theoretical design method for asphalt pavement. As the result, it was revealed that the freeze-thawing of granular base has a strong influence on the fatigue life of pavement structure in cold regions because it varies the deformation-strength characteristics of base course materials.
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Report
(4 results)
Research Products
(31 results)
