横向受载试桩资料的反分析

Back Analysis of Field Test Results for Laterally Loaded Piles

he tried-and-error method is frequently adopted at present for determining the parameters of elastic pile foundation model on the basis of field test results of laterally loaded piles.Because of the limited number of parameters,only a few measured values are used.And this affects the accuracy of the determined parameters. The back analysis procedure presented in this paper attempts to make all calculated values agree with all measured data by means of the optimal algorithm,so that the determination of foundation parameters will be reasonable and reliable. Using the back analysis method , the P-Y curves of the elasto-plastic pile-foundation can also be determined on the basis of the test pile data for multistage load.The results of examples show that the present method is simple and feasible and can overcome the disadvantages of some methods of requiring high accuracy of the field measured bending moments.