| 复合土工膜自然老化特性及抗拉强度变化规律研究 |
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| 引用本文： | 沈长松,黎军锋,孙学智. 复合土工膜自然老化特性及抗拉强度变化规律研究[J]. 水电自动化与大坝监测, 2001, 25(6): 45-48 |
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| 作者姓名： | 沈长松 黎军锋 孙学智 |
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| 作者单位： | 河海大学水利水电工程学院, |
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| 摘 要： | 复合土工膜作为一种新型的防渗材料，在当今水利工程中已得到相当广泛的应用。针对当前人们极为关注的老化问题，采用模拟覆盖法对其自然老化特性进行研究。通过不同时期的试验，取得了极其宝贵的数据，对这些数据进行数学上的拟合处理，得到复合土工膜强度随时间变化的数学表达式，从而求出复合土工膜在工作应变范围内强度随时间变化的规律，为老化特性的研究和工程设计提供可靠的依据。
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| 关 键 词： | 复合土工膜 自然老化 模拟覆盖法 抗拉强度 工作应变 |
| 修稿时间： | 2001-08-13 |
AGING CHARACTERISTICS OF COMPOSITE GEOMEMBRANE AND VARIATION OF TENSILE STRENGTH |
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| Shen Changsong. Li Junfeng,Sun Xuezhi. AGING CHARACTERISTICS OF COMPOSITE GEOMEMBRANE AND VARIATION OF TENSILE STRENGTH[J]. HYDROPOWER AUTOMATION AND DAM MONITORING, 2001, 25(6): 45-48 |
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| Authors: | Shen Changsong. Li Junfeng Sun Xuezhi |
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| Affiliation: | Hohai University. Nanjing 210098 |
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| Abstract: | As a new type of impermeable material. composite geomembrane is widely used in water conservancy projects today. This paper aims at the discussion of aging. and adopts the simulate-overlay method to study the characteristics of natural aging. From the tests on different phases. very important data are obtained. Then curve fitting is performed. and a mathematic expression of the variation of the composite geomembrane intensity with time is obtained. providing a reliable basis for the study of the characteristics of aging working and design of projects. |
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| Keywords: | composite geomembrane natural aging simulate-overlay method tensile strength working strain |
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