黄土高路堤超载预压技术适用性研究  

Study on Applicability of Surcharge Preloading Technology for Loess High Embankment

作　　者：尹利华[1,2] 陈晓瑛[1] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710065 [2]陕西省公路交通防灾减灾重点实验室,西安710075

出　　处：《路基工程》2014年第5期167-169,共3页Subgrade Engineering

摘　　要：针对黄土高路堤沉降变形大的问题,通过有限元方法分别计算了不同填高路堤在不同超载厚度预压下的变形值,研究黄土高路堤采取超载预压技术的适用性。结果表明:为减少黄土高路堤工后沉降和不均匀沉降,对路堤高度小于20.0 m的一般路段,可采取超载方法进行预压处理,超载厚度可取2.5 m。而对黄土高路堤桥涵过渡路段,不宜单纯采取超载预压方法处理。In relation to the problem of large settlement deformation of loess high embankment,the deformation values of embankment in different filling heights under different equivalent heights of surcharge preloading were calculated respectively by FEM so as to study the applicability of such surcharge preloading technology for loess high embankment.The result shows that,in order to reduce post-construction and differential settlement of loess high embankment,the general sections with the embankment height less than 20.0 m may be treated by surcharge preloading with the value of equivalent height of surcharge being 2.5m;however,for the bridge-culvert transition zone thereof,it is inappropriate to treat by surcharge preloading simply.

关 键 词：公路工程 黄土 高路堤 超载预压 沉降 

分 类 号：U416.12[交通运输工程—道路与铁道工程]