基于漂移度的地基沉降预测模型评价与组合策略  

Assessment and the Combination Strategy of Prediction Models for Foundation Settlement Based on Drift Degree

作　　者：刘华伟[1] 牛林新[1] 

机构地区：[1]黄淮学院,驻马店463000

出　　处：《科学技术与工程》2013年第28期8520-8524,共5页Science Technology and Engineering

摘　　要：地基沉降与时间关系的曲线形式具有不确定性,难以用某一模型来模拟其沉降规律。鉴于组合模型可以有效提高预测效果,引入漂移度概念,并在考虑预测结果和实际结果相似度和差异度的基础上,借鉴支持度的公式形式,重新定义了漂移度计算公式,将其用于地基沉降预测模型预测效果比较中;同时基于漂移度建立了地基沉降预测模型的组合策略。实例分析验证了基于漂移度的地基组合预测模型的有效性。The settlement-time curve of foundation is uncertain. So it is hard to simulate the curve by using a certain model. In view of the combination model can effectively improve the prediction performance, the concept of drift degree is introduced, and based on the formula of support degree, the formula of drift degrees is redefined by considering the similarity and difference between predicted results and actual results. The drift degree is used to evaluate the prediction performance of settlement prediction model of foundation while the combination strategy of settlement prediction models is established by using drift degree. The result of a case study verifies the validity of the combination forecast model based on drift degree.

关 键 词：地基 沉降 漂移度 组合预测 

分 类 号：TU433[建筑科学—岩土工程]