| 上覆深厚杂填土软土地基真空预压处理技术 |
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| 引用本文： | 李榕波,唐建亚,周治江.上覆深厚杂填土软土地基真空预压处理技术[J].水运工程,2016(3):155-158. |
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| 作者姓名： | 李榕波 唐建亚 周治江 |
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| 作者单位： | 中交四航工程研究院有限公司，广东 广州 510230,中交四航工程研究院有限公司，广东 广州 510230,中交四航工程研究院有限公司，广东 广州 510230 |
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| 摘 要： | 针对城郊区域广泛分布的上覆深厚杂填土软土地基场地，引入真空预压施工方案。通过引孔、场地周边密封及膜面保护这３项技术改进，克服了表层深厚杂填土对真空预压的干扰，确保了真空预压的顺利实施。沉降、孔压、十字板及室内土工试验等监测检测数据表明加固效果显著，十字板强度平均提高达67%。该施工技术在本案例中取得了成功，可为类似工程所参考。
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| 关 键 词： | 深厚杂填土 软土地基 真空预压 施工技术改进 监测检测 |
Vacuum preloading improvement technique for soft foundation covered with deep miscellaneous fill |
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| LI Rong-bo,TANG Jian-ya and ZHOU Zhi-jiang.Vacuum preloading improvement technique for soft foundation covered with deep miscellaneous fill[J].Port & Waterway Engineering,2016(3):155-158. |
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| Authors: | LI Rong-bo TANG Jian-ya and ZHOU Zhi-jiang |
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| Institution: | CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China,CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China and CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China |
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| Abstract: | For the soft foundation covered with deep miscellaneous fill which is widely distributed in the suburban area,vacuum preloading construction technique is introduced.Adopting three improved construction technology including diversion hole,surrounding site sealing and diaphragm protection,the disturbance caused by deep miscellaneous fill is conquered,and vacuum preloading is implemented smoothly.The monitoring and testing data for the settlement,pore pressure,vane shear test and geotechnical laboratory test reveal that the strengthening effect is remarkable and the vane shear test strength increases by 67%.The construction technique achieves success in the engineering case,thus it may serve as reference for similar projects. |
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| Keywords: | deep miscellaneous fill soft foundation vacuum preloading improved construction technology monitoring and testing |
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