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中文摘要：
基于8个场地中共23根现场试验桩的实测资料,对扩底桩上拔荷载-上拔位移曲线进行了优化的拟合分析。针对抗拔扩底桩的承载特性,选用了生物领域的Richards数学模型。对23根现场试验桩的拟合表明,Richards模型的拟合精度高,相关系数R为0.97311―0.99942,平均0.99188;该模型对抗拔扩底桩的拟合效果比双曲线模型的要好;基于该数学模型的扩底桩上拔荷载的计算值与实测值的误差一般为±2.104%。结果表明：该文选用的Richards数学模型针对抗拔扩底桩上拔荷载-上拔位移曲线的拟合是较为精确的和可靠的。
英文摘要：
Based on actual measurement data of 23 field testing piles in 8 sites, an optimized fitting analysis of uplift load versus uplift displacement curves was carried out. According to the bearing characteristics of belled piles, Ricbards mathematical model, which was applied in biology, was selected to perform the fitting analysis. The fitting results of 23 field testing piles showed that the fitting has high precision with the correlation coefficient R being 0.99188 averagely, ranging from 0.97311 to 0.99942. The fitting effect was better than that of the hyperbolic model. Based on fitting equations, the calculated uplifting load has an error of ±2.104% comparing with measurements. The Richards mathematical model is accurate and feasible for the fitting of uplift load versus uplift displacement curves of belled piles.
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Solution of Moving-load Induced Soil Vibrations Based on the Betti-Rayleigh Dynamic Reciprocal Theor
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