试验P～Y曲线的弯矩函数拟合法

Method of Calculating Experimental P-Y Curves for Test Piles-Fitting Moment Function Method

在分析国内外常用的多种推求方法的基础上,结合试桩结果,提出了用筛选出的函数对实测弯矩进行拟线,进而求出压力P和位移Y.这种推求试验P～Y曲线的方法称之为弯矩函数拟线法,其力学概念明确、物理量对应关系合理,具有普遍的实用意义.编制了相应的电算程序,计算精度较高、结果合理可靠.

Abstorbing many advantages of the analysinsg methods in common use at both home aborad , this paper puts forward a new analysisg method based on the test results of piles , that is the ' method of fitting moment function '. The method can be used to calculate experimental P-Y curves by means of fitting the screened functions into measured moments and then abtaining the soil resistance P and deflection Y . A set of corresponding computer programs have been compiled. Analysis and comparison show that the above method is not only clear and definite in mechanical concept , reasonable in relationships between physical parameters , and simple and convenient to use , but also high in computing precision , thus , reasonable and reliable results can be obtained with it . So the method is of genral practical significance.