浅析我省关中地区湿陷性黄土路基处理

 王立志1,吕红红2

 1.陕西省交通建设集团公司,陕西 西安  710075 2.长安大学设计研究院,陕西 西安  710064

  :结合陕西关中地区已建成的几条高速公路,从黄土的孔隙特征、黄土的含水量和易溶盐含量,分析由于失陷性黄土路基本身的特殊性,导致路基沉陷、边坡坍塌以及路面开裂等的原因.针对影响黄土失陷性的多方面因素,提出了分别采用浅层换填法、强夯法、冲击压实法、挤密法和完善地下、地上防排水的处理措施,为今后黄土地区处理湿陷性黄土路基提供借鉴。

关键词关中地区湿陷性黄土浅层换填法强夯法冲击压实法挤密法

中图分类号:U419          文献标识码:A

Analyses the Guanzhong Region Collapsible Loess Subgrade

 Treatment Measures in our Province

WANG Li-zhi1LV Hong-hong2

1. Shaanxi Province Transportation Construction Group Co. Ltd.Xi‘an 710075China

2. Design and Research  Institute of Changan UniversityXi‘an 710064China

AbstractCombined with several built highways in the Guanzhong region of shaanxi province, based on the pore characteristics of loess, the water and the soluble salt content of loess, analyzing the reasons of roadbed settlement,slope collapse and pavement cracking and so on due to the special features of the loess roadbed.Because of there are several factors affecting the collapsible loess,it puts forward some method such as:the shallow soil replacement method,dynamic compaction method,impact compaction method,dense squeeze method and improving the treatment measures of waterproof and drainage on the ground and underground,providing reference for dealing with collapsible loess foundation in the area of the loess region in the future.

Key wrodsGuanzhong regioncollapsible loessthe shallow soil replacement methoddynamic compaction methodimpact compaction methoddense squeeze method