路堤侧向变形性状及预测模型研究  

Study on the characteristic and prediction model for lateral deformations under embankments

作　　者：余闯[1] 刘松玉[2] 

机构地区：[1]温州大学建筑与土木工程学院,温州325035 [2]东南大学交通学院岩土工程研究所,南京210096

出　　处：《岩土力学》2008年第5期1305-1309,共5页Rock and Soil Mechanics

基　　金：东南大学优秀博士学位论文基金(No.YBJJ0513);教育部博士点基金(No.2001028618)

摘　　要：结合大量实测资料和已有的研究成果,分析了路堤荷载作用下水平向应变随深度的变化规律,得出了侧向变形沿深度呈"弓"型分布的变化规律;提出了符合该变化规律的预测模型及参数求解方法,模型中a、b和c等3个待定参数能简单地求出。工程实践表明,该预测模型不仅反映了侧向变形随深度的变化规律,且有一定的精度,能反映出最大侧向变形发生的位置,应用效果良好。According to the distribution of horizontal strain in the soil under embankment loads, the characteristic of lateral deformations along the depth is analyzed based on measured data and existing research results. The results show that the typical curve is bow-shaped. On this point, the predicted model is established to forecast the lateral deformation. The three parameters in the model a, b and c can be easily solved. This model has been applied to study 2 cases. The model can reflect both the distribution of lateral deformation along depth and the location where the maximum deformation occurs. The comparisons demonstrate that the predicted deformations are in good agreements with the measured data.

关 键 词：路堤 侧向变形 预测模型 水平向应变 

分 类 号：TU433[建筑科学—岩土工程]