| 强夯法加固铁路松软土地基现场试验研究 |
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| 引用本文： | 白冰,徐华轩,刘海波,范强惠.强夯法加固铁路松软土地基现场试验研究[J].中国铁道科学,2010,31(4). |
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| 作者姓名： | 白冰 徐华轩 刘海波 范强惠 |
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| 作者单位： | 1. 北京交通大学,土木建筑工程学院,北京,100044
2. 中铁十六局集团有限公司,北京,100018 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 结合强夯法加固铁路饱和松软土地基的现场测试试验,研究强夯过程中地层孔隙水压力的增长和消散规律、孔隙水压力的空间分布特征、地表位移和地层深处沉降的变化规律以及加固后的地基承载力。结果表明,强夯荷载作用下,孔隙水压力的影响范围可以达到水平距离4.75m和深度6m,在第1遍和第2遍强夯作用后经过约4～6d,孔隙水压力消散率能达到90%以上;同时,土层较深处的沉降量也十分显著,在第1遍强夯荷载作用后,3.8m深处的沉降量可以达到10.7cm。因此,用强夯法加固饱和松软土地基可行,加固后的地基承载力特征值可达240kPa。
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| 关 键 词： | 软土地基 地基加固 强夯法 地基承载力 |
Field Test Study on the Reinforcement for the Saturated Soft Soil Foundation of Railway Using the Dynamic Consolidation |
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| BAI Bing,XU Huaxuan,LIU Haibo,FAN Qianghui.Field Test Study on the Reinforcement for the Saturated Soft Soil Foundation of Railway Using the Dynamic Consolidation[J].China Railway Science,2010,31(4). |
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| Authors: | BAI Bing XU Huaxuan LIU Haibo FAN Qianghui |
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| Institution: | BAI Bing1,XU Huaxuan2,LIU Haibo2,FAN Qianghui2(1. School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2. The Sixteenth Engineering Bureau Group Limited Company of China Railway,Beijing 100018,China) |
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| Abstract: | Combining with the field tests of reinforcement for the saturated soft soil foundation of railway using the dynamic consolidation,this paper analyzes the development and dissipation laws of the pore pressure in strata,the distribution characteristics of the pore pressure in space,the surface displacement and the change law of the settlement in the deep strata during the dynamic consolidation,as well as the variation of the bearing capacity after the reinforcement. Test results show that the affecting scope ... |
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| Keywords: | Soft soil foundation Foundation reinforcement Dynamic consolidation Bearing capacity of foundation |
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