强夯置换法在码头前沿区地基处理中的应用

作者：王晓昱 王博 曹永华

单位：泰达投资控股有限公司 天津泰达海洋开发有限公司 中交天津港湾工程研究院有限公司 天津300457 天津300204 天津300222

关键词：地基处理  强夯置换  码头前沿区

分类号：U655.4

出版年,卷(期):页码：2007,31(6):17-18

摘要：

强夯置换法综合了强夯加固和复合地基的优点,经济有效,但其夯击能在地基中产生的波场对周围建筑物产生着冲击作用,常常制约着其应用。采用特殊的小底面积置换夯锤,并采用渐变的夯击能量,应用强夯置换法对码头前沿区地基进行了加固处理。结果证明,应用此工艺,能有效地控制夯击能量对已有码头建筑的影响,处理后的地基亦满足工程需要。

Dynamic replacement is a kind of ground improvement method with economic benefits because it has the advantage of dynamic consolidation and composite foundation.But the disadvantage of this method is the stress wave field induced by tamping energy will produce impact action to the surrounding structures,its application is often restricted.The foundation of wharf apron space was improved by use of special rammer of small base area,gradual tamping energy and dynamic replacement.The results show the application of this technology can effectively control the influence of tamping energy on existing waterfront structures and the improved foundation can satisfy the requirements of project.

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参考文献：

[1]Menard L,Broise Y.Theoretical and practical aspects ofdynamic consolidation[J].Journal of GeotechnicalEngineering,ASCE,1975,25(1):3-18. [2]姚文凤,杨红玲.强夯置换法地基处理技术在地基加固中的应用[J].西部探矿工程,2004,16(7):28-29. [3]刘惠珊,饶志华.强夯置换的设计方法与参数[J].地基基础工程,1996,6(2):6-13.

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