经编土工格栅拉伸性能测试技术研究

摘要

Current test standards for the tensile properties of geogrid are systematically compared, and problems in tensile test on warp knitted geogrid are summarized. Variations of tensile properties induced by the change of initial fixture distance, tensile rate, and fixture protected by liner or not are investigated through experimental study on the tensile properties of warp knitted geogrid. The results obtained could explain the problems in tensile properties tests.%对现行土工格栅拉伸性能测试标准进行了系统的比较,总结了经编土工格栅拉伸性能测试中存在的问题,并进行了经编土工格栅拉伸性能试验研究,分析了初始夹具距离、拉伸速率和夹持时夹具钳口内加衬垫保护与否对拉伸性能的影响.得到的拉伸性能随初始夹具距离、拉伸速率和夹持时夹具钳口内加衬垫保护与否的变化规律,解释了拉伸性能测试中发现的问题.