夹砂层软土地基电渗联合真空预压设计  

Electroosmosis Combined with Vacuum Preloading Design for Soft Soil Foundation with Sand Interlayer

作　　者：屠建波 崔允亮[2] 葛倩如 张勇 TU Jianbo;CUI Yunliang;GE Qianru;ZHANG Yong

机构地区：[1]浙江省交通规划设计研究院有限公司,浙江杭州3100030 [2]浙江大学城市学院土木工程系,浙江杭州310015

出　　处：《城市道桥与防洪》2020年第11期194-197,210,M0019,共6页Urban Roads Bridges & Flood Control

基　　金：浙江省交通厅科研计划项目(2017004);浙江省自然科学基金项目(LGF20E080007)。

摘　　要：电渗联合真空预压处理软基设计方法尚不够系统和全面,限制了该技术在工程中的应用。针对夹砂层软土地基电渗联合真空预压处理设计,提出了可压缩排水电极设计方法,电源与供电线路设计方法,真空封闭及排水系统设计方法和工期与沉降预测方法,给出了具体的夹砂层地基场地电阻的计算公式和有限元法模拟时电压换算超孔压的计算公式,研究成果为夹砂层软土地基电渗联合真空预压工程设计提供了成套设计方法。The design method of electroosmosis combined with vacuum preloading to treat soft soil foundation is still not systematic and comprehensive enough,which limits the application of this technology in engineering.For the design of electroosmosis combined with vacuum preloading treatment for the sand-interlayered soft soil foundation,the design method of compressible drainage electrode,the design method of power source and power supply circuit,the design method of vacuum sealed and drainage system,and the prediction method of construction period and settlement are proposed.The specific calculation formula of ground resistance of sand-interlayered foundation and the calculation formula of excess pore pressure for voltage conversion in finite element simulation are given.The study result provides a complete set of design method for the electroosmosis combined with vacuum preloading design for soft soil foundation with sand interlayer.

关 键 词：电渗 真空预压 电源设计 沉降预测 

分 类 号：TU472.5[建筑科学—结构工程]