Abstract Geosynthetic reinforced column supported embankments predominantly utilise two mechanisms to transfer embankment loads towards column heads, soil arching and membrane actions. When undertaking the design of column supported embankments, it is common practice to perform a two-step design, whereby the arching actions are estimated independently of the subsoil deformation and membrane actions. This approach is unable to capture the deformation dependency exhibited by both arching and membrane actions. This paper presents deformation dependent arching and membrane action models and implements them within an interaction diagram. It is shown that an interaction diagram-based design approach is capable of performing an ultimate and serviceability limit state design of a geosynthetic reinforced column supported embankment. In contrast, most existing analytical design methods only consider the ultimate limit state. The proposed method is applied to a design example where the benefits of such a design approach are demonstrated.

中文翻译：

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土工合成材料加筋柱支撑路堤的相互作用图设计

摘要 土工合成材料加筋柱支撑路堤主要利用两种机制将路堤荷载传递到柱头、土拱和膜作用。在进行柱式路堤的设计时，通常的做法是执行两步设计，其中拱形作用的估计独立于底土变形和膜作用。这种方法无法捕捉拱形和膜作用所表现出的变形依赖性。本文介绍了变形相关的拱形和膜作用模型，并在交互图中实现了它们。结果表明，基于交互图的设计方法能够对土工合成材料加筋柱支撑路堤进行极限和使用极限状态设计。相比之下，大多数现有的分析设计方法只考虑极限状态。所提出的方法应用于一个设计实例，其中展示了这种设计方法的好处。