土工格栅加筋填挖交界路基离心模型试验研究  

Study on Centrifugal Modeling Test for Cut to Fill Subgrade Reinforced by Geogrid

作　　者：郝伟[1,2] 王选仓[2] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]长安大学公路学院,西安710064

出　　处：《路基工程》2012年第6期118-121,共4页Subgrade Engineering

摘　　要：通过土工离心模型试验,对填挖交界路基处不同的土工格栅加筋方案对于不均匀沉降的处治效果进行研究。通过测量填挖交界路基表面测点的沉降量和位移变化,分析土工格栅铺设的层数对填挖交界路基不均匀沉降和路基整体稳定性的改善作用,因此根据对比试验获得最佳的处治方案。试验研究结果表明:铺设两层土工格栅对填挖交界路基不均匀沉降的效果要优于只铺设一层的,而铺设一层土工格栅对填挖交界路基不均匀沉降的效果要好于不铺设土工格栅的。With geotechnical centrifugal schemes on uneven settlement at the cut modeling test, the to fill location of s treating effect of different geogrid reinforcement ubgrade is studied. By means of measuring the deformation and displacement at the test point on the surface of such subgrade, what role of the paving layers of the geogrid can play to improve the uneven settlement of the cut to fill subgrade and the stability of subgrad a whole is analyzed, as a result, the best treating scheme could be obtained according to the contrast tests. e as The test results show that, in connection with the uneven settlement of the cut to fill subgrade, the treating effect two layers of geogrid is superior to one layer, while that of one layer is superior to none of geogrid.

关 键 词：离心模型试验 填挖交界路基 土工格栅 

分 类 号：TU411.93[建筑科学—岩土工程]