克里金插值拟合在建筑桩基施工中的应用

Application of Kriging Interpolation in Building Pile Foundation

克里金插值作为地学统计常用算法适用于岩土空间变异研究,对空间相关性要求较高,论文通过建筑桩基施工需求开展克里金插值应用研究。基于勘察钻孔数据,开展地质分析统计,利用克里金插值拟合算法和BIM建模工具实现三维地质模型构建,根据拟合结果估算中风化岩面标高判断桩基持力层分布,结合入岩要求计算所需桩长,提前预估桩基工作量,合理安排工期。同时利用该法对桩基成孔过程中卵石层分布进行成功预测,合理指导桩基施工的开展。

As a common algorithm of geoscience statistics, Kriging interpolation is suitable for geotechnical spatial variation research and has high requirements for spatial correlation. Kriging interpolation is applied according to the construction requirements of building pile foundation. The geological analysis and statistics are carried out based on the geotechnical drilling data, and the three-dimensional geological model is established by using Kriging interpolation algorithm and BIM modeling tool. Distribution of bearing stratum of pile foundation is determined by estimate the moderately weathered rock elevation, calculate the pile length according to the requirements of rock entry. Estimate the pile foundation workload in advance, arrange the construction schedule reasonable. Meanwhile, the distribution of pebble layer in pile foundation hole is successfully predicted and guide the pile foundation construction.