哈大客运专线CFG桩与MIP桩应力比试验研究  

Experimental Study on Stress Ratio of CFG Pile and MIP Pile along Harbin-Dalian Passenger Dedicated Line

作　　者：王运超[1] 段立强[1] 罗书学[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2011年第3期162-165,共4页Subgrade Engineering

摘　　要：通过哈大客运专线新营口车站的现场试验,对CFG桩、MIP桩、褥垫层和钢筋混凝土板复合基础中的CFG桩与MIP桩的荷载分担比进行了分析。试验结果表明,这种复合基础中CFG桩与MIP桩的应力比随路基填筑荷载的增加而增大,在填筑结束后应力比基本维持不变。在填筑结束时平均应力比为4.5,且这种复合地基表现出自适应能力。Through site test in New Yingkou Station of Harbin-Dalian Passenger Dedicated Line,load sharing ratio of CFG pile and MIP pile in the composite foundation reinforced with CFG pile,MIP pile,cushion and reinforced concrete slab is analyzed.The results show that the stress ratio of CFG pile and MIP pile in the composite foundation increases with subgrade filling load.After filling,the stress ratio is basically unchanged.At the end of filling,the average stress ratio is 4.5.In addition,this composite foundation shows adaptive capacity

关 键 词：CFG桩 MIP桩 应力比 桩顶压力 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]