CAJ | 학술논문

桥头深厚软基经CFG复合地基处理后,能满足工后沉降的控制要求,对高填方桥头路基尤其有效。CFG复合地基的施工实践表明：振动沉管法施工CFG桩的挤土效应明显,影响范围可达2.5m。地基处理前后原位测试结果和施工期地表沉降与水平位移的观测结果表明：CFG复合地基对软黏土地基的加固起到了效果,地基土强度明显增强,施工期加载快但地基沉降速率小,保证路基稳定性的同时缩短了工期。
교두심후연기경CFG복합지기처리후,능만족공후침강적공제요구,대고전방교두로기우기유효。CFG복합지기적시공실천표명：진동침관법시공CFG장적제토효응명현,영향범위가체2.5m。지기처리전후원위측시결과화시공기지표침강여수평위이적관측결과표명：CFG복합지기대연점토지기적가고기도료효과,지기토강도명현증강,시공기가재쾌단지기침강속솔소,보증로기은정성적동시축단료공기。
By using the CFG composite foundation to improve deep soft soil foundation, the post -construction settle- ment can meet control requirements, which is particularly effective for high fill embankment at bridge head. CFG com- posite foundation construction practice showes that : the compacting effect of the vibration immersed tube construction is obvious, whose effect range can reach 2.5m. The test result with surface subsidence and horizontal displacement results before and after foundation treatment shows that : the CFG composite foundation has played an effective role to strengthening of soft clay foundation with significant enhanced foundation soil strength and fast loading with quite small settlement rate, which can greatly reduce the working period in addition to ensuring stability of embankment.