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首页> 外文期刊>International journal of geomechanics >New Geometric Average Method for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Stratified Sands
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New Geometric Average Method for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Stratified Sands

机译：计算层状砂浅层地基极限承载力的新几何平均法

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摘要

Obtaining the bearing capacity of shallow foundations in a nonhomogeneous soil profile has been a challenging task in geotech-nical engineering. In this paper, a new geometric average for the equivalent soil friction angle (Φ) of various layers beneath shallow strip foundations is used to determine the ultimate bearing capacity. This approach is based on the concept of geometric mean value; however, the method involves applying a power to each variable, which is here the internal friction angle of each soil layer. Numerical methods based on finite elements and also experimental data have been used to verify the presented average method. It will be shown that data obtained from the developed method are well in agreement with those obtained from finite-element analysis and with those obtained from full-scale loading. This agreement is closer when the difference beWeen the shear strength parameters of layers is small, which is the case for sedimentary soil profiles and also for artificially compacted soils. A computer program has been developed to investigate the influence of various parameters and to compute equivalent Φ for different cases.
机译：在非均质土壤剖面中获得浅层基础的承载力一直是岩土工程中的一项艰巨任务。在本文中，使用浅条形地基下方各层等效土摩擦角（Φ）的新几何平均值来确定极限承载力。这种方法基于几何平均值的概念。然而，该方法涉及对每个变量施加功率，在此是每个土壤层的内摩擦角。基于有限元的数值方法以及实验数据已用于验证所提出的平均方法。将显示，从开发的方法获得的数据与从有限元分析获得的数据以及从满量程加载获得的数据完全一致。当层的抗剪强度参数之间的差异较小时，该协议更接近，这对于沉积土壤剖面以及人工压实土壤都是如此。已经开发出计算机程序来研究各种参数的影响并针对不同情况计算等效Φ。

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