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首页> 外文期刊>Rivista italiana di geotecnica >Pseudo-static vs. pseudo-dynamic slope stability analysis in seismic areas of the northern Apennines (Italy)
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Pseudo-static vs. pseudo-dynamic slope stability analysis in seismic areas of the northern Apennines (Italy)

机译：亚平宁山脉北部（意大利）地震区的准静态与准动态边坡稳定性分析

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The present paper mainly deals with the stability of debris deposits in the northern Apennines, which is an area of relatively high seismicity. More specifically, the paper analyses the co-seismic stability of dry infinite slopes by the Limit Equilibrium Method (LEM) and uses the results of Newmark-type analysis for defining appropriate values of the seismic coefficients to be used in pseudo-static analysis. The study areas are the mountainous zones of Garfagnana and Lunigiana (Tuscany – Italy), which consist of hundreds of square kilometres.The main purposes of the paper are: to outline a methodological approach, to define criteria for assessing the stability conditions in the whole study area and to suggest appropriate seismic coefficients for slope instabilities mainly driven by inertial forces (to be used in LEM analyses) Appendix A reports information on the strength parameters of debris deposits as obtained from a number of works. Mainly Appendix A gives a range of possible values. In fact, these values have not been used in the present study, because the objective of the study is to define general criteria for stability conditions and not to analyse specific case studies. Appendix B shows plots of the yield -acceleration values that have been obtained from pseudo-static analysis assuming homogeneous soil profile with c' and φ', curvilinear failure surface and different water table. This Appendix has the only purpose of extending the possible application of the proposed methodology.
机译：本文主要研究亚平宁山脉北部的碎屑沉积物的稳定性，该地区是地震活动相对较高的地区。更具体地说，本文通过极限平衡法（LEM）分析了无穷大干燥边坡的同震稳定性，并使用Newmark型分析的结果来定义用于伪静力分析的适当地震系数值。研究区域是Garfagnana和Lunigiana的山区（托斯卡纳–意大利），由数百平方公里组成。本文的主要目的是：概述方法，确定评估整个稳定条件的标准研究区域并为主要由惯性力驱动的边坡失稳提出适当的地震系数（将在LEM分析中使用）附录A报告了从许多工作中获得的关于碎屑沉积物强度参数的信息。附录A主要给出了一系列可能的值。实际上，这些值尚未在本研究中使用，因为该研究的目的是定义稳定性条件的一般标准，而不是分析特定的案例研究。附录B给出了从假静力分析获得的屈服加速度值图，假设静力土壤剖面均均c'和φ'，曲线破坏面不同，地下水位不同。本附录的唯一目的是扩展所建议方法的可能应用。

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