Limit states of buried polymer environmental structures

埋地聚合物环境结构的极限状态

• 批准号: 217430-2008
• 负责人: Brachman, Richard
• 金额: $ 2.19万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=505128
• 关键词: Limit; states; buried; polymer; environmental

Buried polymer structures that are necessary to alleviate two environmental challenges faced by our growing urban areas will be studied. The first involves geosynthetic liners (thin plastic and clay/fabric liners) to retain contaminants in large landfills for hundreds of years to prevent unacceptable environmental impact (e.g., pollution of surface and ground water). The second uses polymer stormwater retention structures (underground plastic tanks) to manage the increased quantity and decreased quality of runoff from rain and melting snow caused by landscape changes from urban development to limit environmental damage (e.g., erosion, nonpoint source pollution). To provide environmental protection, rupture of geosynthetic liners when buried beneath enormous amounts of waste and collapse of polymer stormwater retention structures when subjected to large vehicle forces must be prevented. Knowledge of the physical demand on the polymer structure and the limit states of the polymer structure (puncture, collapse) are essential to prevent unacceptable performance.

将研究地下聚合物结构，这是必要的，以减轻我们不断增长的城市地区所面临的两个环境挑战。 第一种涉及土工合成衬垫（薄塑料和粘土/织物衬垫），以将污染物保留在大型垃圾填埋场数百年，以防止不可接受的环境影响（例如，地表水和地下水污染）。第二种是使用聚合物雨水保持结构（地下塑料罐）来管理由于城市发展引起的景观变化而导致的雨水和融雪径流量增加和质量下降，以限制环境破坏（例如，非点源污染）。 为了提供环境保护，必须防止土工合成衬垫在被埋在大量废物下时破裂，以及聚合物雨水保持结构在受到大的车辆力时倒塌。 了解聚合物结构的物理要求和聚合物结构的极限状态（穿刺、塌陷）对于防止出现不可接受的性能至关重要。