论文部分内容阅读
对于现场自平衡试验无法测得极限承载力的试桩,基于自平衡试验的基桩实测位移数据,采用三维有限元-无限元组合方法来模拟自平衡加载过程,结合位移反分析理论对桩土之间的界面力学参数进行反演计算,再利用反演得到的参数优化值进行正演计算分析,从而得到试桩极限承载力和竖向上拔最大位移值。实践证明,这种计算分析方法是合理可靠的,它是桩基极限承载力的理论预测分析与工程实际相联系的有效平台,为类似桩基工程的设计施工技术决策提供了切实可行的理论分析方法。
For the test pile whose ultimate bearing capacity can not be measured in the field self-balance test, based on the measured displacement data of the pile self-balance test, the self-balanced loading process is simulated by the combination of the three-dimensional finite element method and the finite element method. The interface mechanics parameters are inverted and calculated, and then the inversion is used to calculate the optimal parameters of the parameters to obtain the ultimate bearing capacity of test pile and the maximum vertical displacement value. Practice has proved that this method of calculation and analysis is reasonable and reliable. It is an effective platform for the theoretical predictive analysis of the ultimate bearing capacity of pile foundations and engineering practice, and provides a feasible theoretical analysis for the design and construction technology decision of similar pile foundation engineering method.