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首页> 外文会议>GeoShanghai International Conference; 20060606-08; Shanghai(CN) >Shakedown Analysis of Unbound Granular Materials using Accelerated Pavement Test Results from New Zealand's CAPTIF Facility
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Shakedown Analysis of Unbound Granular Materials using Accelerated Pavement Test Results from New Zealand's CAPTIF Facility

机译：使用新西兰CAPTIF设施的加速路面测试结果对未结合的粒状材料进行粉碎分析

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This paper reports on one aspect of an ongoing research project that is aimed at investigating the nonlinear resilient and permanent deformation behaviour of Unbound Granular Materials (UGM) using laboratory and field test results. Insufficient evidence is currently available to confirm the reliability of the proposed linkage between the Shakedown ranges defined via the Repeated Load Triaxial (RLT) test and in-situ performance of UGM. Further investigations on this specific topic were necessary to confirm predictions made by the laboratory test results by examining the results of a series of accelerated pavement tests. The examination of the relationship between laboratory shakedown parameters and field test results is described in detail. The paper shows that the shakedown behaviour of UGM observed in RLT tests can also be observed in field tests. In particular an empirical approach was formulated and calibrated to determine basecourse permanent strain rate using data from RLT and field tests for two different UGM. From the results of the tests a correlation was found to exist between the resilient strain rate and the permanent strain rate as long as the shear stresses within the basecourse material were sufficiently small.
机译：本文报告了一个正在进行的研究项目的一个方面，该项目旨在使用实验室和现场测试结果来研究未结合颗粒材料（UGM）的非线性弹性和永久变形行为。当前没有足够的证据来确认通过重复载荷三轴（RLT）测试定义的减振范围与UGM的现场性能之间建议的链接的可靠性。有必要对该特定主题进行进一步研究，以通过检查一系列加速路面测试的结果来确认实验室测试结果做出的预测。详细介绍了实验室减震参数与现场测试结果之间关系的检查。本文表明，在RLT测试中观察到的UGM的震动行为也可以在现场测试中观察到。尤其是，采用了一种经验方法并进行了校准，使用来自RLT的数据和两种不同UGM的现场测试确定了基础永久应变率。从测试结果可以发现，只要基层材料内的剪切应力足够小，弹性应变率和永久应变率之间就存在关联。

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