Although there is little effect to limited capacity by circumstance of load test, yet is not ignore effect to the P-S curve of single pile.
单桩静载荷试验的试验环境虽然对极限承载力影响较小，但是对试桩的荷载位移曲线的影响是不可忽视的。
2
The comparative test was made, and the test data are analyzed and treated. It was found that the PS N curves determined by these three methods were approximate.
The results are: cognition training can decrease the state test anxiety of the Type C, Type A , Type S and increase the test performance of Type C, Type P.