巨粒土填筑高速公路路基施工技术应用探析

Analysis on Application of Construction Technology of Expressway Subgrade Filled with Over Coarse-grained Soil

以某巨粒土填筑高速公路路基工程作为依托项目,在明确巨粒土于实际工程中的分类标准后,通过室内试验确定巨粒土的基本物理力学性能指标,结合依托项目的工程实践结果确定试验路段内巨粒土填筑高速公路路基的施工技术,工后以路基沉降观测值和压实度作为检测指标对施工质量进行把控。结果表明,将巨粒土作为填料修筑的高速公路路基质量满足规范要求,此项技术对同类高速公路工程具有积极意义。

Based on a project of filling the expressway subgrade with over coarse-grained soil,after defining the classification standard of over coarse-grained soil in practical engineering,the basic physical and mechanical property indexes of over coarse-grained soil are determined through laboratory tests,and the construction technology of filling the expressway subgrade with over coarse-grained soil in experimental section is determined by combining with the engineering practice results of the project.After construction,the observation value of subgrade settlement and compactness are determined as the detection indexes to control the construction quality.The results show that,the quality of expressway subgrade constructed with over coarse-grained soil as filler meets the requirement of specification,and this technology has positive significance for similar expressway projects.