Asaoka法中时间间隔取值范围的应用研究  

Study on application of Asaoka's method in time interval value scope

作　　者：郑建国[1,2] 潘烈[1] 丁吉峰 刘兆慧 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]机械工业勘察设计研究院,西安710043

出　　处：《工程勘察》2012年第5期15-18,共4页Geotechnical Investigation & Surveying

摘　　要：系统介绍了Asaoka法的原理和利用最小二乘法对观测数据进行等时距处理的方法。结合工程实例,详细分析了时间间隔Δt对Asaoka法的预测结果及相关指标的影响,得出如下结论:以往在Asaoka法推算过程中,选取相关系数较好的沉降值作为最终沉降值的方法有不合理之处;将预测结果可靠性的优化指标定为两次预测的差值,选取使两次预测差值较小的时间间隔较为合理。The basic theory of Asaoka＇ s method and the method using the least square method to deal with the observational settlement of the uniform time interval are systematically introduced. The detailed analyses of the effect of time interval At on the predicted results and the related indexes are carried out combined with the engineering practice. The unreasonable aspects of the traditional method in which the value with the better correlation coefficient is selected as the final settlement in Asaoka＇s method are indicated. It is pointed out that the method taking the difference value of the two predictions as the optimization index of the predicted results and selecting the At with smaller difference value as the reasonable value is feasible.

关 键 词：沉降预测 ASAOKA法 最小二乘法 等时间间隔 黄土路基 

分 类 号：TU444[建筑科学—岩土工程]