Development and Validation of Accelerated Test Methods for Durability of Trenchless Pipe

非开挖管道耐久性加速试验方法的开发和验证

• 批准号: 9978634
• 负责人: Ever Barbero
• 金额: $ 13.51万
• 依托单位: West Virginia University Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9978634&HistoricalAwards=false
• 关键词: Development; Validation; Accelerated; Test; Methods

DEVELOPNMNT AND VALIDATION OF ACCELERATED TEST METHODS FORDURABELITY OF TRENCHLESS PIPEEver J. Barbero and Rakesh K. GuptaWest Virginia UniversityDeteriorated sewer systems can be rehabilitated in-situ using any one of a variety of polymer linings (trenchless, lining) applied to the inside of an existing host-pipe. Here it proposed to develop and validate rapid test methods for determining the relative effectiveness of the various available technologies. In particular, the evolution of creepcompliance of the liners will be predicted for times up to 50 years by employing the time-temperature superpusition theory in concert with the equivalent-time theory; dynamic mechanical and creep compliance data in bending will be utilized as model inputs. Reliability of this procedure will be validated with full-size, long-term creep tests. Finally, a creep buckling model will be implemented using ABAQUS to interpret the full-size strain data in the post-buckling regime. Although data will be obtained on only four materials, results are expected to be applicable to a variety of polymers and polymer-matrix composites.

非开挖管道耐久性加速测试方法的开发与验证西弗吉尼亚大学恶化的下水道系统可以使用多种聚合物衬里（非开挖衬里）中的任何一种，在现有的主管道内部进行原位修复。在这里，它建议开发和验证快速测试方法，以确定各种可用技术的相对有效性。特别是，利用时间-温度叠加理论与等效时间理论相结合，将预测衬垫蠕变顺应性的演变时间长达50年；弯曲时的动态力学和蠕变柔度数据将用作模型输入。该程序的可靠性将通过全尺寸、长期蠕变试验进行验证。最后，将使用ABAQUS实现蠕变屈曲模型，以解释屈曲后的全尺寸应变数据。虽然只会获得四种材料的数据，但预计结果将适用于各种聚合物和聚合物基复合材料。