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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.A: Fluid-Structure Interaction >SOIL STRUCTURE INTERACTION : THEORETICAL AND EXPERIMENTAL RESULTS
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SOIL STRUCTURE INTERACTION : THEORETICAL AND EXPERIMENTAL RESULTS

机译：土壤与结构的相互作用：理论和实验结果

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In the study of the seismic behaviour of structures, the Soil Structure Interaction (SSI) is concerned with the interaction between the soil, from which come the solicitation, and the structure (building, industrial installation,…). The SSI can be considered as a kind of multi physic problem. The physical phenomena for the soil or the structure are described by the same equations. But, for the soil, the best point of view is to consider wave's propagation in an infinite medium, whereas for the structure, the most suitable approach is, in many case, to use eigen modes on the modal basis. The currently used numerical methods for SSI consider two different domains, with interactions at the interface. Boundary Element Methods (BEM) and Finite Element Methods (FEM) can be used. An application is presented, with the interpretation of test performed in Japan, for a Structure Soil Structure Interaction (SSSI) problem, considering the interactions between two adjacent buildings during an earthquake. The tests were performed by JNES in Japan, and the interpretations presented here are performed by CEA, in France, using FEM methods. The field test experiments have been carried out by NUPEC (JNES) under different conditions with one building, two identical buildings or two different buildings in an excavation, for the "surface configuration", and in the "embedded configuration", when the excavation is filled. Forced vibration test and earthquake observations are being carried out in the field test. NUPEC proposed a theoretical model for the interpretation of the experimental results, including soil and buildings mechanical characteristics. The results obtained with this model are similar to the experimental ones. Sensibility analyses have been developed, based on the NUPEC theoretical model, for the forced vibration tests and the seismic motion. It is possible to reproduce, with numerical simulations, the fact that, for two buildings, the movement under a seismic solicitation is a little lower for two adjacent buildings than for one isolated building.
机译：在研究结构的抗震性能时，土壤结构相互作用（SSI）与土壤之间的相互作用有关，而土壤与土壤之间的相互作用来自于土壤与结构之间的相互作用（建筑物，工业设施等）。 SSI可以看作是一种多物理场问题。用相同的方程式描述土壤或结构的物理现象。但是，对于土壤，最好的观点是考虑波浪​​在无限介质中的传播，而对于结构，最合适的方法是在许多情况下以模态为基础使用本征模式。当前用于SSI的数值方法考虑了两个不同的域，并且在接口处具有交互作用。可以使用边界元方法（BEM）和有限元方法（FEM）。考虑到地震过程中两个相邻建筑物之间的相互作用，提出了一种应用程序，并解释了在日本进行的测试，以解决结构-土壤-结构相互作用（SSSI）问题。测试是由日本的JNES执行的，此处介绍的解释是由法国的CEA使用FEM方法进行的。 NUPEC（JNES）已在不同条件下对一栋建筑物，两栋相同建筑物或两栋不同建筑物的开挖进行了“地面配置”和“埋入配置”的现场测试实验。填充。现场测试正在进行强制振动测试和地震观测。 NUPEC提出了用于解释实验结果的理论模型，包括土壤和建筑物的机械特性。该模型获得的结果与实验结果相似。已基于NUPEC理论模型开发了灵敏度分析，用于强制振动测试和地震运动。通过数值模拟可以重现这样的事实，即对于两栋建筑物，在地震拉动下，两栋相邻建筑物的运动比一栋孤立建筑物的运动略低。

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