真空预压软基处理分层沉降监测
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摘要
介绍真空预压软基处理工程中的沉降产生机理,特别是分层沉降的监测。浅层及深层软基处理过程中,分层沉降管会发生弯曲,弯曲导致管口发生一定的沉降,分析这种弯曲产生的沉降对分层沉降数据处理的影响,并研究了相应的解决方法。讨论了分层沉降管的刺入沉降问题,发现刺入沉降对数据处理无影响。结合工程实例进行了数据处理与分析,发现剔除分层沉降管的弯曲变形导致的磁环被动沉降量后,数据更加真实可信,这种处理问题的方法在工程中有广泛的现实意义。
The settlement generating mechanism of vacuum preloading soft foundation treatment is introduced.In the process of soft foundation treatment,the layered settlement pile will bend and thus induce some settlement.The effect of pile bending on data processing and its solution are analyzed.Meanwhile,the punching settlement of the pile is also discussed,and the conclusion is drawn that it has no influence on data processing.Data processing is analyzed combining with an engineering example,which comes into the conclusion that after rejecting the passive settlement of magnetic ring caused by the bending of layered settlement pile,the data is more true and reliable,so this method shall be widely used.
The settlement generating mechanism of vacuum preloading soft foundation treatment is introduced.In the process of soft foundation treatment,the layered settlement pile will bend and thus induce some settlement.The effect of pile bending on data processing and its solution are analyzed.Meanwhile,the punching settlement of the pile is also discussed,and the conclusion is drawn that it has no influence on data processing.Data processing is analyzed combining with an engineering example,which comes into the conclusion that after rejecting the passive settlement of magnetic ring caused by the bending of layered settlement pile,the data is more true and reliable,so this method shall be widely used.
引文
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[2]康帅.真空预压法加固软土地基的现场试验与理论研究[D].青岛:中国海洋大学,2007.
[3]苏国祥,王简年.真空预压软基处理工程监测[J].港工技术,2009(s1):116-119.
[4]丁金粟,李锦坤.土力学及基础工程[M].北京:地震出版社,1992.
[5]吴起星,胡辉.基于Gompertz成长曲线的真空预压软土沉降规律分析[J].岩石力学与工程学报,2006(10):3 600-3 606.
[6]于向吉.真空预压的机理与应用研究[D].天津:天津大学,2007.
[7]滕俊常,林弘,孙志鸿.分层沉降观测技术的应用[J].黑龙江交通科技,2001(2):13-14.
[8]刘金利,王骅,林敏.分层沉降试验在工程实践中的运用与分析[J].内蒙古公路与运输,2004(1):19-22.
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