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首页> 外文期刊>Acta Geotechnica: An International journal for Geoengineering >Vertical bearing capacity behaviour of single T-shaped soil-cement column in soft ground: laboratory modelling, field test, and calculation
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Vertical bearing capacity behaviour of single T-shaped soil-cement column in soft ground: laboratory modelling, field test, and calculation

机译：软研磨单张形土水泥柱的立式承载力行为：实验室建模，现场测试和计算

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摘要

The T-shaped soil-cement column is a variable-diameter column, which has an enlarged column cap at the shallow depth, resulting in the column shape being analogous to the letter "T". In this study, 1-g laboratory and full-scale field loading tests were employed to investigate the vertical bearing capacity behaviour of a single T-shaped column in soft ground. Pressure cells were set in a T-shaped column in the field to measure the vertical column stress above and below the column cap during the loading test. After the loading test, several columns were excavated to investigate their failure modes. The results indicated that, since the section area of the column cap was remarkably higher than that of the deep-depth column, the stress concentration occurred in the deep-depth column just under the cap, leading to column failure. Based on this failure mode, a simplified method was proposed to estimate the ultimate bearing capacity of a single T-shaped column; the comparison of estimated and measured results indicated the applicability of the proposed method.
机译：T形土水泥柱是一种可变直径柱，其在浅深度处具有放大的柱盖，导致柱状类似于字母“T”。在该研究中，采用1g实验室和全规模的田间负载测试来研究软研磨中单个T形柱的垂直承载力行为。将压力细胞设置在该领域的T形柱中，以在负载试验期间测量柱帽上方和下方的垂直柱应力。在加载测试之后，挖掘了几栏以研究其失效模式。结果表明，由于柱盖的截面面积显着高于深度柱的截面区域，因此在帽下方的深度柱中发生应力浓度，导致柱故障。基于该故障模式，提出了一种简化的方法来估计单个T形柱的最终承载力;估计和测量结果的比较表明了该方法的适用性。

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