灰色时效模型及在基坑锚拉墙位移预测中的应用  

The Grey Rheological Model and Its Application to the Prediction of Displacement of the Anchor Wall in Foundation Pit

作　　者：左红伟[1] 田玉静[2] 冯紫良[3] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]青岛理工大学现代教育技术中心,青岛266033 [3]同济大学地下建筑工程系,上海200092

出　　处：《青岛理工大学学报》2005年第5期5-10,共6页Journal of Qingdao University of Technology

基　　金：建设部科研项目(04-2-198)

摘　　要：针对岩土工程的灰色理论,单纯从可测位移建立可预测的模型,未考虑工程荷载影响.在分析岩土流变模型的基础上,建立了反映岩土工程荷载与位移的时效关系的灰色流变模型GRM(m,n),并提出了采用最小二乘辨识模型的方法.将该模型辨识应用于辨识基坑锚拉墙中锚座位移随荷载变化时效关系并用于预测后期锚座位移,取得理想效果,验证了方法的可行性.The effect of engineering load is not considered when the predictable displacement model is founded merely on the grey forecast theory. Based on the analysis of the rheological model of the geomechanics, GRM（m,n）, Grey Rhelogical Model is presented which reflects the time-dependent relationship between geotechnical engineering load and displacement. The least square optimization method of identifying the model is also presented. With the data that reflect the displacement of anchor wall with the load applied to anchor, the grey prediction is conducted for predicting relationship of load-displacement-time of the anchor shoe. Ideal effect has been obtained and the feasibility of the method is proved.

关 键 词：灰色模型 模型辨识 流变 时效 基坑 锚拉墙 位移 

分 类 号：TU473.2[建筑科学—结构工程]