两种软基沉降预测方法的应用及对比分析  

Application and Comparison of Two Methods of Settlement Prediction for Foundation in Soil

作　　者：闫飞亚 陈志波[1] 

机构地区：[1]福州大学环境与资源学院,福州350116

出　　处：《长江科学院院报》2016年第1期106-110,共5页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金(41102167);福州大学科技发展基金(2011XQ12)

摘　　要：运用沉降预测方法中的双曲线法、指数曲线法对堆载预压处理的某道路软土地基进行沉降预测,并研究了初始时间起点、采用数据时间长短、时间间隔对2种方法推算精度的影响。研究表明:初始时间起点对双曲线法的推算精度影响较大,对指数曲线法的推算精度影响较小;采用数据时间的长短对2种方法的影响精度都很大,采用较长时间的沉降资料,能提高推算精度;时间间隔对2种方法的影响都较小。Based on methods such as hyperbolic method and exponential curve method,we carried out settlement prediction for soft-soil foundation of a highway,which was treated by surcharge preloading. Influences of starting time,time length from the moment of full loading and time interval were studied for the two methods above. Results show that,as for prediction accuracy,hyperbolic method is more influenced by starting time than exponential curve method. Then,time length from the moment of full loading has great influence on the two methods,and prediction accuracy can be improved with the increase of time length. Finally,two methods are less affected by time interval.

关 键 词：软土地基 沉降预测 堆载预压 双曲线法 指数曲线法 

分 类 号：TU433[建筑科学—岩土工程]