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Seismic behaviour of micropile systems

机译：微型桩系统的抗震性能

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摘要

This contribution describes centrifuge and numerical studies conducted by the authors to establish the seismic behaviour of micropiles. The authors conclude that micropiles can offer improvements in the behaviour of structures founded on liquefiable soils. In this discussion, we would like to emphasise two major factors that can influence the behaviour of micropiles. First, micropiles can suffer from instability due to their slender-ness following liquefaction of the surrounding soil. Second, excess pore pressure redistribution can cause the soil within the pile group to suffer liquefaction, almost as quickly as that in the free field. Both of these effects have been experimentally observed at the University of Cambridge.
机译：该贡献描述了作者进行的离心和数值研究，以建立微桩的抗震性能。作者得出的结论是，微桩可以改善基于可液化土壤的结构的性能。在此讨论中，我们要强调两个主要因素，这些因素可能会影响微型桩的行为。首先，微型桩由于周围土壤液化后的细长性而可能会不稳定。其次，过多的孔隙压力重新分布会导致桩组内的土壤液化，几乎与自由场一样快。这两种效应都已在剑桥大学进行了实验观察。

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