Experimental investigation and long-term monitoring of geocell-reinforced roads under freeze-thaw cycles

土工格室加固道路冻融循环试验研究及长期监测

• 批准号: 566441-2021
• 负责人: Lin, Cheng
• 金额: $ 2.19万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722289
• 关键词: Experimental; investigation; long; term; monitoring

Freeze-thaw is a major cause for distress of roads in Canada. This research project is to investigate the use of Neoloy geocells to reduce the risk of freeze-thaw disruption to roads and enhance resilience of roads in cold regions. A fully instrumented road stretch will be constructed to monitor the long-term performance of the geocell-reinforced roads subjected to seasonal freeze-thaw cycles. Meanwhile, a series of laboratory-scale model tests on geocell reinforced soils under freeze-thaw cycles will be conducted by employing controlled thermal and mechanical loading conditions and varying soil conditions. The outcomes of this project include (1) quantifying the beneficial effect of geocells in reinforcing roads against freeze-thaw damage, (2) understanding the underlying reinforcing mechanisms, and (3) development of a design method for geocell-reinforced roads under freeze-thaw cycles. The results of this research will contribute to improvement of the design and construction practices of durable roadways in Canada.

冻融是加拿大道路损坏的主要原因。 该研究项目旨在研究使用Neoloy土工格室来降低道路冻融破坏的风险，并提高寒冷地区道路的弹性。 将建造一条装有完整仪器的道路，以监测土工格室加固道路在季节性冻融循环下的长期性能。 同时，通过控制温度和机械荷载条件以及不同的土壤条件，对冻融循环下的土工格室加筋土进行了一系列实验室模型试验。 该项目的成果包括：（1）量化土工格室在加固道路抗冻融破坏方面的有益效果，（2）了解潜在的加固机制，以及（3）开发冻融循环下土工格室加固道路的设计方法。 这项研究的结果将有助于改善加拿大耐用道路的设计和施工实践。