砾石桩加固公路盐渍化软土路基施工技术  

Construction Technology of Gravel Pile Strengthening Salinized Soft Soil Subgrade

作　　者：虞海珍[1] 赵怀义 

机构地区：[1]华中科技大学土木工程与力学学院 [2]新疆公路规划勘察设计研究院,新疆乌鲁木齐830006

出　　处：《华中科技大学学报（城市科学版）》2008年第2期83-86,共4页Journal of Huazhong University of Science and Technology

摘　　要：盐渍化软土具有高压缩性,且盐渍化的程度高,作为公路路基会引起沉陷、翻浆及路面破坏等多种病害。本文结合国道314线焉耆段盐渍化软土路基处理工程,比选出砾石桩处理方案,并详细介绍砾石桩施工工艺,包括材料要求、施工机械、施工流程和质量保证措施。静力触探测试、载荷试验和动力触探检测结果表明,该路段盐渍化软土路基加固处理效果良好,复合地基承载力得到较大幅度的提高,砾石桩是加固公路盐渍化软土路基的有效方法。Subgrade settlement, frost boiling and pavement damage will be caused by salinized soft soil subgrade because of high compressibility and serious salinization. Based on the soft ground treatment engineering in National Highway NO. 314, the construction technology of gravel pile was introduced in details which including material requirements, construction machineries, construction process and quality control measures. The results of static penetration test, loading test in site and heavy dynamic penetration test indicate that the foundation soil can reach dense-medium dense state and the soil＇s bearing capacity increases greatly. Gravel pile is an effective method for strengthening salinized soft soil subgrade.

关 键 词：砾石桩 盐渍化软土 软土路基 地基承载力 施工技术 

分 类 号：TU448[建筑科学—岩土工程]