土木工程与管理学报Issue(2)：16-22,7.
基于监测数据的加筋高填路堤分层填筑变形特性分析
Analysis of Deformation Characteristics in Stratified Filling of Reinforced High Embankment Based on Monitoring Data
摘要
Abstract
The reinforced embankment was popular in the construction of mountainous expressways. In high reinforced embankments, the strength of reinforced soils can be increased, and thus the embankment becomes more stable after the geogrids are utilized. However, the key issue was how the reinforced soils effect the settlement of high embankment. The present study aims to analyze the function of geogrids in the controlling of deformation in the reinforced high embankment. Taking a ongoing embankment as a example in the Yunfu-Luoding expressway, numerical simulations using FLAC3D were carried out in the process of each two-meters filling of reinforced soils. Meanwhile, monitoring data were analyzed after detailed investigations in the high embankment. Results showed that displacement of reinforced soils was redistributed due to the utilization of geogrids, in which vertical and horizontal displacement decreased. It can be identified that the differential settlement can be effectively controlled if the geogrids were used in the high embankment. It can also be noted that the horizontal displacement increased with the height of reinforced soils. During the process of layered filling, it was shown that the degree of decreasing in horizontal displacement was valued as 8. 74%, while the degree of decreasing in settlement was 3. 83%. Finally, it was shown that maximum values of settlement decreased, which subjected to the application of reinforced soils in the high embankment decreased, while horizontal displacement can decreases at the degree of 8. 62%、8. 38% and 4. 16%in three monitoring points, respectively.关键词
加筋土/高填路堤/监测数据/分层填筑/路堤变形/沉降规律Key words
reinforced soil/high embankment/monitoring data/layered embankment/deformation/settlement分类
交通工程引用本文复制引用
雷鸣,汪华斌,李纪伟,徐一鸣,丘旭富,郑必灿..基于监测数据的加筋高填路堤分层填筑变形特性分析[J].土木工程与管理学报,2014,(2):16-22,7.基金项目
国家自然科学基金(41372296) （41372296）
广东省交通运输厅科技项目(2011-02-028) （2011-02-028）
国家科技部“十二五”科技项目(2012BAK10B02) （2012BAK10B02）
