| 夯扩挤密碎石桩处理液化砂土 |
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| 引用本文： | 付殿武,李凤起,戚银生,张国联.夯扩挤密碎石桩处理液化砂土[J].沈阳建筑工程学院学报(自然科学版),2010,26(2). |
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| 作者姓名： | 付殿武 李凤起 戚银生 张国联 |
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| 作者单位： | 付殿武(东北大学基建处,辽宁,沈阳,110004);李凤起(沈阳医学院后勤管理处,辽宁,沈阳,110034);戚银生(北京波森特岩土工程有限公司,北京,100218);张国联(东北大学资源与土木学院,辽宁,沈阳,110004) |
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| 基金项目： | 国家自然科学基金项目，辽宁省博士启动基金项目 |
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| 摘 要： | 目的 消除砂土液化,保证处理深度范围内地基土上下均匀,为液化砂土桩处理探索新的途径.方法 夯扩挤密碎石桩采用相同的夯击能量和贯入度控制桩体质量,以高能量施工设备进行孔内夯击填料,振动和挤密桩底和桩间土,使松散砂土颗粒重排,提高砂土的承载力和压缩模量.笔者对比分析夯扩挤密碎石桩在沿海高速路基工程上的应用实例.结果 采用夯扩挤密碎石桩复合加固地基,可提高砂层标贯锤击数30%,消除砂土液化现象,提高地基承载力,与振冲桩相比节省造价约20%.结论 夯扩挤密碎石桩方法工艺简单,施工质量易保证,节约水资源;夯扩挤密碎石桩对于公路路基工程,具有广阔的应用前景,开辟了处理砂土液化的新途径.
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| 关 键 词： | 夯扩挤密碎石桩 液化砂土 复合地基 承载力 |
Study on Compacted Crushing Stone Pile in Treatment for Saturated Sand after Liquefaction |
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| FU Dianwu,LI Fengqi,QI Yinsheng,ZHANG Guolian.Study on Compacted Crushing Stone Pile in Treatment for Saturated Sand after Liquefaction[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2010,26(2). |
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| Authors: | FU Dianwu LI Fengqi QI Yinsheng ZHANG Guolian |
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| Affiliation: | FU Dianwu1,LI Fengqi2,QI Yinsheng3,ZHANG Guolian4(1.Capital Construction,Northeastern University,Shenyang China,110004,2.Logistic Management Office Capital Construction,Shenyang Medical College,110034,3.Beijing Bosnte Rock , Soil Company,Beijing China,100218,4.College of Civil Engineering,110004) |
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| Abstract: | To eliminate sand liquefaction and ensure foundation soil homogeneous is a new challenge in foundation construction.The same compacting energy is applied in compacted crushing stone piles to control the quality of the piles.High energy facility is adopted in bore-filling,which performs a vibration and compaction to the surrounding soil around the piles and makes the unconsolidated sand particles rearranged.As a result,this approach can increase load-carrying ability and compress modulus of sand,and eliminat... |
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| Keywords: | compacted crushing stone pile sand after liquefaction compound foundation load-carrying ability |
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