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Evaluation of Lateral Interpretation Criteria for Drilled Shaft Capacity in Gravels

机译：砾石钻探井眼能力的侧向解释标准评价

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摘要

Representative interpretation criteria are examined in detail to evaluate the lateral response of drilled shaft foundations in gravels. A database of field lateral load tests is used for the analysis. The representative criteria are subdivided into absolute displacement, displacement as a function of shaft diameter, rotation limit, mathematical model, and graphical construction method. Comparison of these criteria shows that the initial elastic region ends at approximately 3-5 mm, 0.50 %B, and 0.08° rotation, which represent the serviceability limit state. The final region begins at about 25 mm, 2.5 %B, and 0.33° rotation, which represent the ultimate limit state. The graphical construction methods, Q_L and Qs&w, are located within the transition region of the curve. Among these criteria, the displacement limits, Q_L, and Qs&w methods demonstrate more reliable results. The typical load-displacement curves for lateral capacity in gravels are developed for engineering practical use. Further, recommendations for the use of these interpretation criteria are also given.
机译：详细检查了代表性的解释标准，以评估砾石中钻孔竖井基础的横向响应。现场侧向载荷测试数据库用于分析。代表性标准可分为绝对位移，位移随轴直径，旋转极限，数学模型和图形化构造方法而定。这些标准的比较表明，初始弹性区域终止于大约3-5 mm，0.50％B和0.08°旋转，它们代表了使用期限极限状态。最终区域开始于大约25 mm，2.5％B和0.33°旋转，这表示最终极限状态。图形构造方法Q_L和Qs＆w位于曲线的过渡区域内。在这些标准中，位移极限，Q_L和Qs＆w方法证明了更可靠的结果。砾石侧向承载力的典型荷载-位移曲线是为工程实际使用而开发的。此外，还提供了使用这些解释标准的建议。

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