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本文叙述了一组对ＨＤＰＥ和ＰＥＴ土工格栅试件进行的隔离状态下的交变荷载一延伸试验，试件是在五种加载频率（０．１、０．５、１．０、２．０和３．５Ｈｚ）及荷载幅度下进行试验的。可以用两种不同特性的循环响应来描述土工格栅材料的荷载一应变性能：（１）非线性的卸载一再加载滞后回线；（２）包括所有滞后回线的荷载一应变包线（Ｃａｐ）。现已证明两种格栅试件的交变荷载－应变响应曲线与按现行的ＡＳＴＭＤ４５９５试验方法得出的相同材料静态特性明显不同。ＨＤＰＥ试件的荷载－应变包线时加载频率和加载历史很敏感，而ＰＥＴ试件似乎相对地不敏感。两种格栅的荷载－应变滞后特性都与荷载水平和加载频率密切相关。
In this paper, a series of tests of alternating load and extended load of HDPE and PET geogrid specimens under isolation are described. The specimens are tested at five loading frequencies (0.1, 0.5, 1.0, 2) 0 and 3.5Hz) and the load amplitude of the test. The cyclic-response of two different characteristics can be used to describe the load-strain behavior of geogrid materials: (1) non-linear unloading repeated loading of hysteresis loops; (2) loading of all hysteresis loops; ). It has been demonstrated that the alternating load-strain response curves of the two types of grid specimens differ significantly from those of the same materials obtained according to the current ASTM D4595 test method. The load-strain envelope of HDPE specimens is sensitive to loading frequency and loading history, while PET specimens appear to be relatively insensitive. The load-strain hysteresis characteristics of both grids are closely related to the load level and loading frequency.