CFG桩试桩施工方案.doc

CFG桩试桩施工方案.doc目录1、编制依据及原则..............................................................1编制依据................................................................1编制原则................................................................12、工程概况.....................................................................13试验目的......................................................................24试验总体安排..................................................................3试验时间................................................................3人员配置................................................................3机械配备................................................................45、CFG桩施工技术要求...........................................................46CFG桩工艺性试验方案..........................................................5试桩布置................................................................5施工工艺................................................................6桩位放样................................................................6钻机就位................................................................6混合料搅拌..............................................................7钻进成孔................................................................8灌注及拔管..............................................................8钻机移位................................................................9桩头清理................................................................9铺设碎石垫层...........................................................97、施工中常见的问题及处理方法..................................................10缩颈和断桩.............................................................10桩体强度不均匀.........................................................10桩顶上升量较大.........................................................108、施工注意事项................................................................119质量检测.....................................................................1210、质量保证措施...............................................................1211、试桩总结报告...........................