| 真空预压处理软基效果分析 |
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| 引用本文： | 连峰,龚晓南,张长生.真空预压处理软基效果分析[J].工业建筑,2007,37(10):58-62. |
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| 作者姓名： | 连峰 龚晓南 张长生 |
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| 作者单位： | 浙江大学,建筑工程学院,杭州,310027;铁道部科学研究院,深圳研究设计院,深圳,518034 |
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| 摘 要： | 采用真空预压法处理某高速公路软基,处理淤泥层的平均厚度达到10m以上,软基上施加真空压力80kPa,150d后地基表面沉降量达到1m以上,地基平均固结度超过90%,满足设计要求。处理后的软土地基物理力学性质变化明显,表明采用真空预压法处理本工程软基是可行的,同时对真空预压引起的土体水平位移进行分析。
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| 关 键 词： | 真空预压 沉降 水平位移 孔隙水压力 土压力 |
| 修稿时间： | 2007-02-26 |
EFFECT ANALYSIS OF SOFT FOUNDATION TREATMENT BY VACUUM PRELOADING |
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| Lian Feng,Gong Xiaonan,Zhang Changsheng.EFFECT ANALYSIS OF SOFT FOUNDATION TREATMENT BY VACUUM PRELOADING[J].Industrial Construction,2007,37(10):58-62. |
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| Authors: | Lian Feng Gong Xiaonan Zhang Changsheng |
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| Affiliation: | 1.College of Civil Engineering;Zhejiang University Hangzhou 310027;2.Shenzhen Research and Design Institute;China Academy of Railway Sciences Shenzhen 518034 |
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| Abstract: | The vacuum preloading method is used in highway to treat the soft foundation.The average thickness of the silt layer is about 10m.The vacuum pressure of 80kPa is applied for 150 days to treat the soft clay layer.The settlement is about 1.0m and the average degree of consolidation is over 90%.The physicomechanical properties of the soil change greatly after treatment,which proves the effect of vacuum preloading in this project.Meanwhile,the horizonal displacement problem caused by vacuum preloading is also discussed. |
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| Keywords: | vacuum preloading settlement displacement pore water pressure soil pressure horizontal displacement |
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