双向不等轴拉应变对有纺织物开孔面积率的影响

双向不等轴拉应变对有纺织物开孔面积率的影响 English Version

详细信息

1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Shunde Foshan Country Garden Property Development Co., Ltd., Foshan 528000, China

摘要: 土工织物应用于防水、反滤、保温、隔离等方面,土工织物的开孔面积率是反映土工织物性能的重要参数,前人对此已有研究,主要集中在单轴拉伸和等双轴拉伸试验。通过双向不等轴拉伸试验,运用白彬推导的公式,采用图像法测试土工织物在双向拉应变下的开孔面积率POA（Percent Open Area）的变化,分析理论值与试验值之间的偏差并加以修正,提出“投影泊松比”的概念,同时探究投影泊松比对开孔面积率的影响。
- 土工织物 /
- 开孔面积率 /
- 双向不等轴拉应变 /
- 图像法 /
- 投影泊松比
Abstract: Geotextiles are widely used in people's living and project construction, mainly for water proof, filtration, heat preservation, isolation and many other aspects. The percent open area is one of the most important parameters which reflect the performance of geotextiles. The change laws of the percent open area in unsymmetrically biaxial tension tests are explored through the imagine analysis, and the results are more applicable than those of the uniaxial tension tests and symmetrically biaxial tension tests by the previous researchers. The difference between the theoretical and experimental values is compared, and the idea of “Projective Poissons ratio” is proposed.
- geotextile /
- percent open area /
- unsymmetrically biaxial tension test /
- imagine analysis /
- projective Poisson's ratio

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