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.

将研究减轻我们不断增长的城市地区面临的两个环境挑战所必需的埋入聚合物结构。 第一个涉及地质合成衬里（薄塑料和粘土/织物衬里），以将大型垃圾填埋场中的污染物保留数百年，以防止不可接受的环境影响（例如，表面和地下水污染）。第二种使用聚合物雨水保留结构（地下塑料罐）来管理由于城市发展而导致的降雨和融化降雪量增加的数量和降低质量，从而限制了环境损害（例如，侵蚀，非点源污染）。 为了提供环境保护，必须防止埋藏在大量废物之下的土工合成衬里的破裂，并在遭受大型媒介物时的聚合物雨水保留结构的崩溃。 了解聚合物结构的物理需求以及聚合物结构的极限状态（穿刺，崩溃）对于防止不可接受的性能至关重要。