| CFG复合地基在高路堤软基处理工程中的应用 |
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| 引用本文： | 曹勇,熊燕文.CFG复合地基在高路堤软基处理工程中的应用[J].广东公路交通,2012(3):91-93,99. |
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| 作者姓名： | 曹勇 熊燕文 |
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| 作者单位： | 1. 广东省交通运输规划研究中心,广州,510101
2. 中国铁建港航局集团有限公司,广州,511442 |
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| 摘 要： | 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。
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| 关 键 词： | CFG复合地基 软基 高路堤 |
Research on Application of CFG Composite Foundation on High Embankment with Soft Soil Treatment |
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| Institution: | CAO Yong(Transport Planning Research Center of Guangdong Province,Guangzhou 510101,China) |
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| Abstract: | 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. |
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| Keywords: | CFG composite foundation soft soil ground high embankment |
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