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Upper bound solutions of bearing capacity of strip footing by pseudo-dynamic approach

机译：带地基承载力的拟动力法上限解

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摘要

This paper presents the pseudo-dynamic analysis of seismic bearing capacity of a strip footing using upper bound limit analysis. However, in the literature, the pseudo-static approach was frequently used by several researchers to compute the seismic bearing capacity factor theoretically, where the real dynamic nature of the earthquake accelerations cannot be considered. Under the seismic conditions, the values of the unit weight component of bearing capacity factor N γE are determined for different magnitudes of soil friction angle, soil amplification and seismic acceleration coefficients both in the horizontal and vertical directions. The results obtained from the present study are shown both graphically as well as in the tabular form. It is observed that the bearing capacity factor N γE decreases significantly with the increase in seismic accelerations and amplification. The results are thoroughly compared with the existing values in the literature and the significance of the present methodology for designing the shallow footing is discussed.
机译：本文利用上限分析方法对带状基础地震承载力进行了拟动力分析。但是，在文献中，一些研究人员经常使用伪静态方法从理论上计算抗震承载力因子，而在这种情况下，地震加速度的真实动态特性无法考虑。在地震条件下，针对水平和垂直方向上不同的土壤摩擦角，土壤放大率和地震加速度系数，确定了承载力因子NγE的单位重量分量值。从本研究中获得的结果既以图形形式也以表格形式显示。可以看出，随着地震加速度和放大倍数的增加，承载力因子NγE明显减小。将结果与文献中的现有值进行了全面比较，并讨论了当前方法对浅层基础设计的意义。

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