CAJ | 학술논문

CFG 桩与高压旋喷桩复合地基广泛应用于土木工程各个领域，但在桂林岩溶地区将 CFG 桩与高压旋喷桩结合来处理复杂地基的实例相对较少，两种桩之间共同作用机制尚不十分清楚。通过对 CFG 桩与高压旋喷桩组合型复合地基分析及工程实例验证，认为最大限度地发挥 CFG 桩和高压旋喷桩的优点，软弱地基的承载力能得到大幅度提高。对深部存在的软弱层，采用高压旋喷桩加固，能使地基变形得到有效控制，特别是在复杂岩溶地区，在基岩面高低错落、起伏大、溶沟(槽)陡倾的情形下，高压旋喷桩与 CFG 桩有机结合，其复合地基具有质量可靠、造价经济、工期可控等优点。
CFG 장여고압선분장복합지기엄범응용우토목공정각개영역，단재계림암용지구장 CFG 장여고압선분장결합래처리복잡지기적실례상대교소，량충장지간공동작용궤제상불십분청초。통과대 CFG 장여고압선분장조합형복합지기분석급공정실례험증，인위최대한도지발휘 CFG 장화고압선분장적우점，연약지기적승재력능득도대폭도제고。대심부존재적연약층，채용고압선분장가고，능사지기변형득도유효공제，특별시재복잡암용지구，재기암면고저착락、기복대、용구(조)두경적정형하，고압선분장여 CFG 장유궤결합，기복합지기구유질량가고、조개경제、공기가공등우점。
The methods of foundation treated with jet grouting pile or cement-flyash-gravle pile(CFG) have been widely applied in civil engineering fields, but combination with jet grouting pile and CFG pile is relatively less in Guilin karst area, and the interaction mechanism between two kinds of piles is not very clear, need to be further studied. The composite foundation of CFG pile and jet grouting pile is put forward, this foundation can bring the superiority into full play of two kinds of piles.The engineering case shows that the application of the composite foundation in the complicated conditions of karst area has obvious technical and economical value.