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| Analytical Fitting Method of Loading-Displacement Curve for Upper PileSegment under O-Cell Pile Testing |
| XI Xiao-Zhou, CHEN Long-Zhu |
| (Institute of Engineering Safety and Disaster Prevention, Shanghai Jiaotong University,Shanghai 200240, China) |
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Abstract A set of analytical equations of the loadingdisplacement curve of upper pile segment for the O-cell pile testing (OPT) method were established by using load transfer method. The lateral soil of pile shaft was simulated with a tri-linear load-transfer function and the gravity of pile shaft was taken into account. Also, the method to determine parameters for the pile-soil system with OPT data was mentioned. The theoretical results were compared with engineering cases from literatures. The method could be used as a theory guide to determine the frictional force at the pile-soil interface and furthermore to obtain the loading-displacement curve of traditional loading test with OPT data.
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Received: 27 October 2010
Published: 31 October 2011
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