The reloading behaviour of the soil is dominated by effects of the recent deformation history as well as by the overall stress history, indicated by overconsolidation. The stiffness of an overconsolidated soil is higher than the stiffness of normally consolidated soil. In basic hypoplastic and barodetic models, the stiffness for reloading is underestimated, and thus so-called ratcheting effects appear. In this article, we propose a relation to improve the reloading behaviour of barodesy: we introduce an extension, which increases the stiffness in dependence of the distance to the asymptotic state boundary surface and the current dilatancy. Thus, within an intermediate strain range, the stress-strain behaviour is improved and ratcheting effects are significantly reduced. The behaviour of the proposed extension is verified by simulation of typical element tests and validated by a comparison with experimental results.

中文翻译：

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使用渐近状态边界面在气压测量中重新加载

土壤的重新加载行为受最近变形历史的影响以及整体应力历史的影响，由过度固结表明。超固结土的刚度高于正常固结土的刚度。在基本的发育不良和气压模型中，重新加载的刚度被低估了，因此出现了所谓的棘轮效应。在这篇文章中，我们提出了一种改善 barodesy 重新加载行为的关系：我们引入了一个扩展，它根据到渐近状态边界面的距离和电流膨胀来增加刚度。因此，在中间应变范围内，应力-应变行为得到改善并且棘轮效应显着降低。