应用相似理论研究强夯地基加固深度
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摘要
分析了Menard公式修正法中折减系数的变化特点,探讨了一些影响强夯加固深度的因素,应用相似理论方法建立了强夯加固深度的相似准则,由此给出了估算强夯地基加固深度的公式.计算分析结果表明,该式把夯能与土的阻抗耗能结合起来,不仅可考虑夯能大小问题,而且可考虑土类土性问题、锤径影响问题,能取得很好效果.
This paper discussed the features of revision coefficient in the revised influence depth formula (given) by L.Menard for different kinds of soils,and analyzed some factors affecting the effective depth of dynamic compaction.A similarity rule was established by the application of similarity theory,thus giving a new formula to estimate the depth.It is demonstrated by the satisfying calculating results that considering tamping energy as well as consumption of energy for soil impedance in the new equation makes it possible that not only the amount of tamping energy can be taken into account,but also natures of soils and diameters of hammers can be (researched.)
This paper discussed the features of revision coefficient in the revised influence depth formula (given) by L.Menard for different kinds of soils,and analyzed some factors affecting the effective depth of dynamic compaction.A similarity rule was established by the application of similarity theory,thus giving a new formula to estimate the depth.It is demonstrated by the satisfying calculating results that considering tamping energy as well as consumption of energy for soil impedance in the new equation makes it possible that not only the amount of tamping energy can be taken into account,but also natures of soils and diameters of hammers can be (researched.)
引文
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[2] 地基处理手册[M].北京:中国建筑工业出版社,1988.
[3] 江守一郎,等.模型实验的理论和应用[M].北京:科学出版社,1984.
[4] 段士伟.强夯加固影响深度之探讨[J].建筑结构,2000,(5).
[5] 赵抚民,李晓路.强夯击数对强夯效果的作用分析[J].南昌大学学报(工科版),2002,24(3):71-74.
[6] FanHY,EllisGW.LaboratoryStudyofGroundResponsetoDynamicDensification[A].FirtyEnggLabReportNo.462.6[C].LehighUniversity,1983.
[7] 左铭麒.震动波与强夯机理[J].岩土工程学报,1986,8(8).
[8] 杨成林,等.瑞雷波勘探[M].北京:地质出版社,1993.
[9] 小理查特FE,等.土与基础的振动[M].徐攸在,等译.北京:中国建筑工业出版,1976.
[10] 朱德昌.强夯法加固饱和砂性土地基效果检测[J].河海大学学报,1999,(岩土工程专辑).
[11] 肖培杰,刘曾武.地震波在工程中的应用[M].北京:地震出版社,1982.
[12] 中国建筑科学研究院.北京乙烯工程23万m2液化地基的强夯处理[A].全国重大工程项目地基处理工程实录[C].王铁宏主编.北京:中国建筑工业出版社,1998.
[13] 王东元.强夯法加固珠海机场地基及其检测[A].第四届全国地基处理学术讨论会论文集[C].杭州:浙江大学出版社,1995.
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