Analyses of load tests on 100 instrumented bored piles in different weathering grades of different tropical geological formations of peninsular Malaysia enabled correlations of ultimate shaft and base resistance with standard penetration test (SPT) results and unconfined compression strengths. The data also enabled development of shaft resistance (t–z) and base resistance (q–w) models that are related to SPT, unconfined compressive strength and rock types. The t–z models can be used for strain softening and strain hardening while the q–w models are for strain hardening and stiffening behaviour. The models thus developed were applied for analysis of 35 piles in the database that were loaded until the load–settlement curves were significantly non-linear. Most of the analyses resulted in a reasonable match with the measured load–settlement and load-transfer curves up to 1.5 times the pile working load, regardless of whether the q–w function was strain hardening or stiffening. Accurate matching with measured load–settlement and load-transfer curves for 1.5–3 times working load was conditional on the correct choice of the q–w function. The models were further tested against 27 published load test results from across the world.

中文翻译：

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热带土壤和岩石中的钻孔桩：竖井和基础阻力，tz和qw模型

对马来西亚半岛不同热带地质构造的不同风化等级的100根钻孔桩进行的载荷试验分析，使极限竖井和基础阻力与标准渗透试验（SPT）结果和无侧限抗压强度相互关联。数据还可以开发与SPT，无侧限抗压强度和岩石类型有关的竖井阻力（t–z）和基础阻力（q – w）模型。所述吨-Z模型可以用于应变软化和应变而硬化q -瓦特模型用于应变硬化和强化行为。这样开发的模型被应用到数据库中的35个桩的分析中，直到荷载-沉降曲线显着非线性为止。大部分分析结果都与测得的荷载沉降和荷载传递曲线达到合理的匹配，该曲线最高可达桩工作荷载的1.5倍，而无论q – w函数是应变硬化还是硬化。在正确选择q – w函数的条件下，要与测量的载荷沉降和载荷传递曲线精确匹配1.5–3倍的工作载荷。针对来自全球的27个公布的负载测试结果，对模型进行了进一步测试。