周强

摘要：近年来，随着国家西部大开发、公路大建设步伐的加快，我省高等级公路的建设在设计与施工方面也取得了很大的进步，采用先进的勘察、测量手段为公路路基设计和施工提供了可靠的技术资料。作为公路主体工程的路基，公路路基综合稳定技术中研制出的一大批用于公路路基工程的新材料、新型工程机械得到了充分的开发和引进，同时，为这些新技术服务的各类专业化施工公司应运而生。专业化施工公司的建立和发展，为公路路基工程专项施工奠定了基础。现就本人在公路稳定路基施工技术方面的体会进行总结。

关键词：稳定路基；施工方法；技术总结

中图分类号：U416.1 文献标识码：A文章编号：

Pick to: in recent years, along with the national highway big western development, speed up the pace of construction, in our province, the construction of high grade highway in design and construction made great progress, and the use of advanced survey, measuring method for highway roadbed design and construction to provide the reliable technical material. As the main body of the project of the highway roadbed, highway subgrade stability comprehensive technology developed a large number of used for highway subgrade engineering of the new material, new engineering machinery got fully development and introducing, at the same time, for these new technical service of all kinds of professional construction company arises at the historic moment. Professional construction company''s establishment and development of the highway subgrade engineering for special construction laid a foundation. Now I have stable in highway subgrade construction technical aspects of the experience in this field.

Keywords: stable subgrade; Construction method; Technical summary

一路基填土与压实

公路路基的强度和稳定性很大程度上取决于路基填料的性质及其压实的程度。从现有施工条件出发，改进填土要求和压实度是保证公路路基质量最有效的方法和途径。

1. 1路基填料

（JTG F10-2006）《公路路基施工技术规范》规定了对路基填料的选用，对路基填料的最小强度和最大粒径规定了标准，采用CBR值表示路基土的强度，同时，引入了路床的概念，对上路床的填料提出了限制条件。高速公路和一级公路路面底以下上路床0~30 cm填料最小强度CBR值应大于8%，30~80 cm下路床填料最小强度CBR值应大于5%，下面的填土也都给出相应的规定值。当路基填料达不到规定的最小强度时，应采取掺合粗粒料或换填，有时也可用石灰等稳定材料进行处理。……