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Ultimate bearing capacity of eccentrically loaded strip footings above voids in rock masses

机译：岩体中空隙超过空隙的偏心装载条带的最终承载力

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摘要

Based on a self-developed adaptive finite element limit analysis (AFELA) code and generalized Hoek-Brown (GHB) failure criterion, the footing-void system subjected to eccentric load in rock masses is investigated. The research emphasis of this study is on quantifying the effect of the load eccentricity and voids on the ultimate bearing capacity of footings. Predictions of footing ultimate bearing capacity can be captured by the scope enclosed by upper bound (UB) results and lower bound (LB) results within 5% relative errors. All of independent variables including the void location, the void size, the void length-width ratio and the rock strength parameters are involved in parametric study in pairs. Furthermore, typical failure patterns which can cover nearly all cases are discussed for deeper insight into how the stability evolving with variations of above-mentioned variables.
机译：基于自开发的自适应有限元限制分析（AFELA）代码和广义Hoek-棕色（GHB）失效标准，研究了对岩体偏心载荷进行偏心载荷的脚踏体系。本研究的研究强调是量化负载偏心和空隙对基位的最终承载能力的影响。通过上限（UB）结果和下限（LB）封闭的范围可以捕获基础轴承容量的预测结果，导致相对误差的5％。所有独立变量包括空隙位置，空隙尺寸，空隙长度宽度和岩石强度参数成对涉及参数研究。此外，讨论了典型的故障模式，用于深入了解如何利用上述变量的变化的稳定性发展方式。

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