摘要
为探讨高填方路堤在自重应力和汽车荷载作用下的工后沉降,在兰永一级公路某高填方路堤进行了工后沉降现场监测,分别在行车道和路肩位置布置单点沉降计,监测了工后沉降变化情况,分析了高填方路堤沉降随时间和空间的变化规律。以填方路基工后沉降原位监测结果为基础,探讨了高填方路基工后沉降预测回归模型。研究结果表明:路肩位置沉降大于行车道位置沉降;路基沉降随时间增加而增大,高填方路堤填筑结束1 a后沉降趋于稳定;汽车荷载作用下路堤沉降不会出现较大的增长趋势;对数模型能较真实地反映高填方路基的工后沉降规律。
To explore the post-construction settlement of high-filled embankment under the action of self weight stress and vehicle load,the post-construction settlement of a high-filled embankment of LanzhouYongjing first grade highway is monitored on site.Single-point settlement meter is embedded in the driveway and shoulder position,and the post-construction settlement is monitored.The regularities of the settlement varying with time and space are analyzed.Based on the in-situ monitoring data of post-construction settlement of the filled embankment, some regressive models for predicting the post-construction settlement are discussed.The result shows that（1） the settlement of shoulder position is greater than that of driveway position;（2） the settlement of embankment increases with time going, the settlement of high-filled embankment tends to be stable one year after filling;（3） under the action of vehicle load,the settlement of the embankment will not has a big growth;（4） logarithm model can disclose the regularity of the postconstruction settlement of high-filled embankment.
出处
《公路交通科技》
CAS
CSCD
北大核心
2017年第3期15-19,25,共6页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金项目(51568044)
甘肃省交通厅建设科技项目(2013-0613)
关键词
道路工程
工后沉降
试验研究
高填方路堤
road engineering
post-construction settlement
experiment research
high-filled embankment
