The prediction of the performance of a structure supported on pile foundations is of paramount importance in the seismic design and assessment of new and existing structures. This paper presents the key elements of a hybrid Finite Element Technique to perform the coupled soil-pile-superstructure and site response analysis. Model simulations of a series of large scale seismic soil-pile-superstructure tests conducted on the 6.1m x 6.1m UC Berkeley/PEER center multidirectional shaking table are used to calibrate and verify the proposed numerical technique. Detailed comparison with measured structural and 'free field' soil response in the shaking table tests show that the proposed formulation gives very good descriptions of maximum spectral accelerations and frequency response. The model accurately captures the transition from kinematic and inertial response of these 'simple' systems.
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机译：对桩基础上支撑的结构的性能进行预测对于抗震设计以及新的和现有结构的评估至关重要。本文提出了一种混合有限元技术的关键要素，以进行土-桩-上部结构耦合与场地响应分析。在6.1m x 6.1m加州大学伯克利分校/ PEER中心多向振动台上进行的一系列大型地震土桩-上部结构测试的模型模拟，用于校准和验证所提出的数值技术。在振动台测试中与测得的结构和“自由场”土壤响应的详细比较表明，所提出的公式对最大频谱加速度和频率响应给出了很好的描述。该模型准确地捕获了这些“简单”系统从运动和惯性响应的过渡。
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