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首页> 外文会议>The proceedings of the twelfth (2002) international offshore and polar engineering conference (ISOPE-2002) >An Analysis Model for a Hybrid Interactive System Involving Compressible Buffer Material
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An Analysis Model for a Hybrid Interactive System Involving Compressible Buffer Material

机译：包含可压缩缓冲材料的混合交互式系统的分析模型

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摘要

In recent years, EPS (Expanded Polystyrene) geofoam isrngaining worldwide recognition in construction industry either asrnlightweight substitution or as compressible buffer to reduce thernearth pressures against retaining structures. When EPS is usedrnbehind a structure, the structure interacts with the soil via thernEPS blocks giving birth to a hybrid interactive system. In thisrnpaper, a numerical model is described for the analysis of such arnsoil-structure-EPS interaction system. The development of thernmodel focused on the constitutive and the interface modeling.rnA constitutive relation of EPS was formulated using an elastoplasticrnhardening law. Recognizing the fact that there is always arnthin layer of interface that participates in the interaction process,rna new hybrid interface model was developed. The interface wasrnassumed to be elasto-plastic in its behavior. The soil backfill wasrnmodeled assuming it as the elasto-plastic hardening andrnsoftening material. The developed model was validated through arnnumerical experiment on a rigid retaining structure.
机译：近年来，EPS（发泡聚苯乙烯）土工泡沫在建筑行业获得了世界认可，无论是轻质替代品还是可压缩的缓冲剂，以减少支撑结构的地基压力。当在结构后面使用EPS时，该结构通过EPS块与土壤相互作用，从而产生了混合交互系统。在本文中，描述了一种数值模型，用于分析这种土-结构-EPS相互作用系统。该模型的发展侧重于本构和界面建模。利用弹塑性硬化定律建立了EPS的本构关系。认识到始终有接口的arnthin层参与交互过程这一事实，开发了一种新的混合接口模型。该界面被认为在其行为方面是弹塑性的。对土壤回填进行了建模，并假设其为弹塑性硬化和软化材料。通过在刚性保持结构上的数值试验验证了开发的模型。

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