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Characterising site investigation performance in multiple-layer soils and soil lenses

机译：多层土壤和土壤镜片中的现场调查表现

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摘要

Insufficient or inappropriate soil testing can lead to a range of undesirable consequences, however there is little research available on site investigation performance in complex soils. The present study analyses the relationship between investigation quality and various soil conditions, such as the number of layers and the presence of lenses. Investigation performance is assessed through the use of random, virtual soils in a Monte Carlo analysis context. The assessment metric is total expected project cost, which implicitly incorporates the risk of damage from poor investigation. It is shown that the optimal investigation can save in the order of up to AUD$ 2 million (£1.1 million), for a 6-storey, 400 m~2 building supported by 9 piles, or 30% of its construction cost. The optimal number of boreholes was found to vary with the lens stiffness ratio, lens thickness, and the magnitude of variability of both the layer boundaries and soil properties.
机译：不足或不适当的土壤测试可能导致一系列不良后果，然而，在复杂的土壤中存在几乎没有研究现场调查表现。 本研究分析了调查质量与各种土壤条件之间的关系，例如层数和镜片的存在。 通过在蒙特卡罗分析背景下使用随机虚拟土壤来评估调查表现。 评估指标是预期的项目成本，其隐含地纳入了差的调查损失的风险。 结果表明，最佳调查可以将高达200万美元（110万英镑）节省的6层高，400米〜2建筑，支撑在9桩，或其建筑成本的30％。 发现最佳的钻孔数与层边界和土壤特性的透镜刚度比，透镜厚度和变异性的大小相同。

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