| 地震液化粉土地基的处治研究 |
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| 引用本文： | 罗廷赤. 地震液化粉土地基的处治研究[J]. 宁夏工程技术, 2010, 9(3): 273-276 |
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| 作者姓名： | 罗廷赤 |
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| 作者单位： | 宁夏公路建设管理局,宁夏,银川,750011 |
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| 摘 要： | 国道主干线福州至银川高速公路,经过宁夏固原境内2.2km当年海原大地震破坏区,在施工图设计阶段发现该区域地势起伏不平,地表土质松疏,地形紊乱,路基两侧排水十分困难,是典型的公路地基不良地质.对该段地基的处治关系到高速公路全线的建设成败.经过挖孔、钻探,取样做试验,土质水文分析,多方案比较,最终设计采用碎石挤密桩对该段地基进行处理.施工过程显示该方案技术先进、经济合理、处治成功.该段高速公路已建成通车,状况稳定.采用碎石挤密桩处理液化粉土地基取得了显著的工程效果,对处治类似地基和地震破坏区地基具有积极的借鉴意义.
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| 关 键 词： | 地震破坏区 液化粉土 碎石挤密桩 地基处治 |
Treatment of liquefied foundation ground |
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| LUO Tingchi. Treatment of liquefied foundation ground[J]. Ningxia Engineering Technology, 2010, 9(3): 273-276 |
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| Authors: | LUO Tingchi |
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| Affiliation: | LUO Tingchi(Ningxia Highway Construction Administration,Yinchuan 750011,China) |
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| Abstract: | The Fuzhou to Yinchuan National Highway pass Guyuan which located in Haiyuan Earthquake disaster area.Wavy terrain,loose earth chaos terrain,hard dewatering in roadbed was found in construction documents design phase,which is typical unfavorable geology.Treatment of this foundation concern the success or failure of the whole highway construction.Through dig,drilling,sampling and experiment,and hydrological analysis,finally this design adopt compaction pile foundation treatment.The construction process shows that this project has the advantage of advanced technology,reasonable economy,success treatment.The transport service is now available and stable.Application of densification by gravel piles in liquefied foundation ground treatment has a distinguishing result. |
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| Keywords: | earthquake disaster area liquefied silt densification by gravel piles foundation treatment |
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