Impact on the bearing capacity of an ice road with localized thin areas due to a moving load

移动荷载对局部薄层冰路承载力的影响

• 批准号: 530201-2018
• 负责人: Beddoe, Ryley
• 金额: $ 0.26万
• 依托单位: Royal Military College of Canada
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=644953
• 关键词: Impact; bearing; capacity; ice; road

Ice roads, ice runways, and ice platforms provide vital access to remote areas of Canada for the resupply of**isolated communities as well as the exploration and development of natural resources for economic growth in**Canada. Accurately determining the safe bearing capacity for these ice covers is critical, and is closely**dependent on the ice thickness as a design parameter. Investigating this in a laboratory setting provides a**controlled and repeatable environment to examine the impact thin ice zones have on the bearing capacity of an**ice cover. The first studies of this focused on a stationary load applied at the centre of the ice sheet which had**a defined distance from the thin zone. In reality, the loads on ice roads will be moving trucks traveling along**the road. Therefore, it is essential that one investigates how a moving load will be impacted by localized thin**zones. And, how will a thin zone reduce the bearing capacity of an ice cover for a moving load? In order for**NOR-EX to apply the effective ice thickness results from a moving load directly to their ice road design**methodology there is a need to understand how a moving load will be affected by a thin zone. The results of**this research project will allow NOR-EX Engineering Ltd. to continue to build their understanding on how a**moving load will be affected by a thin zone and to develop methodology for ensuring safety of vehicles using**their ice roads.

冰路、冰跑道和冰平台为加拿大偏远地区提供了至关重要的通道，为 ** 孤立的社区提供补给，并为 ** 加拿大的经济增长勘探和开发自然资源。准确确定这些冰盖的安全承载力是至关重要的，并且与作为设计参数的冰厚密切相关。在实验室环境中对此进行调查提供了一个可控的和可重复的环境，以检查薄冰区对冰盖承载力的影响。最初的研究集中在冰盖中心施加的固定载荷上，冰盖与薄带有一个确定的距离。实际上，冰路上的负载将是移动沿着行驶的卡车。因此，研究移动荷载如何受到局部薄带的影响是很重要的。而且，一个薄的区域将如何减少冰盖对移动载荷的承载能力？为了让 **NOR-EX将移动荷载产生的有效冰厚直接应用于其冰道设计 ** 方法，需要了解移动荷载如何受到薄区的影响。该研究项目的结果将使NOR-EX Engineering Ltd.能够继续了解移动荷载如何受到薄带的影响，并制定方法来确保车辆使用冰路的安全性。