无砂垫层真空预压加固吹填淤泥场地道路软基的应用  

The Application of Vacuum Preloading without Sand Cushion to Reinforce Road Soft Foundation in Dredger Fill Silt Site

作　　者：贾磊 JIA Lei(CCCC Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《工程技术研究》2024年第18期61-64,共4页Engineering and Technological Research

摘　　要：吹填淤泥场地的道路工程建设面临着软基难题,传统的有砂垫层真空预压技术虽有效,但存在造价高、工期长等缺点。文章结合实际工程案例,探讨了无砂垫层真空预压技术在加固吹填淤泥场地道路软基中的应用。通过分析十字板剪切试验、土工试验、载荷试验等实测数据,评价了该技术的道路深厚软基加固效果。结果表明,无砂垫层真空预压能显著提高加固范围内道路软基的承载力和稳定性,有效控制沉降变形,达到了理想的加固效果。The road engineering construction of dredger fill silt site is faced with the problem of soft foundation.Although the traditional vacuum preloading technology with sand cushion is effective,it has the disadvantages of high cost and long construction period.Combined with practical engineering cases,this paper discusses the application of vacuum preloading technology without sand cushion to reinforce road soft foundation in dredger fill silt site.By analyzing the measured data of vane shear test,geotechnical test and load test,the reinforcement effect of this technology on road deep and thick soft foundation is evaluated.The results show that the vacuum preloading without sand cushion can significantly improve the bearing capacity and stability of the road soft foundation within the reinforcement range,effectively control the settlement deformation,and achieve the ideal reinforcement effect.

关 键 词：真空预压 软基处理 无砂垫层 道路工程 工后沉降 

分 类 号：TU472[建筑科学—结构工程]