单桩荷载-沉降曲线的修正指数曲线模型拟合研究  

Application of modified exponential curve model in fitting of loading-settlement curve of single pile

作　　者：欧阳明[1] 丁伯阳[1] 石吉森[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《水运工程》2013年第1期31-38,共8页Port & Waterway Engineering

摘　　要：在对已有的数学模型预测方法进行分析并将指数曲线模型按照一定的修正方法进行优化的基础上,构造了一个新的修正指数曲线模型。通过对不同类型的单桩静载荷试验数据进行拟合,相关系数均高于0.996,拟合效果好于双曲线模型和完整指数曲线模型。修正指数曲线模型对单桩P-s曲线能进行很好的描述,可以利用该模型获得的拟合结果对单桩承载力进行预测。Based on the analysis to existing methods of mathematical model prediction and optimized analysis to exponential curve model with certain modified method, we put forward a new modified exponential curve model. The correlativity coefficient of this modified exponential curve model is over 0.996 according to the fitting analysis of actual measurement data of static load test of different types of single piles, and the fitting effect by the model is better than that by hyperbolic model and integrated exponential curve model. The modified exponential curve model can describe P-s curves of single piles well, and it can be used to tbrecast the ultimate beating capacity of single piles

关 键 词：单桩 荷载-沉降(P-s)曲线 竖向静载荷试验 拟合 

分 类 号：TU473[建筑科学—结构工程]