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本文在Van Der Veen提出的描述单桩静载试验P—S曲线的数学模型的基础上,建立了一个新的数学模型。并采用优化分析方法进行参数计算。给出了满足极限荷载定义的“理论极限荷载”计算公式和满足我国有关规范的工程用极限荷载计算公式。与实际工程试验的结果对比表明,本模型及参数计算方法,至少对桩径在90cm以内的各种桩是合适的。
This paper establishes a new mathematical model based on the mathematical model of the P-S curve of the static load test proposed by Van Der Veen. And use the optimization analysis method to calculate the parameters. The calculation formula of “theoretical ultimate load” that meets the definition of the limit load and the calculation formula of the engineering ultimate load that satisfies relevant regulations in China are given. Comparison with the actual engineering test results shows that this model and parameter calculation method are suitable for at least all kinds of piles with a pile diameter of less than 90 cm.