某路基堆载预压处理的有限元数值模拟  

FEM numerical simulation of pre-loading treatment for a roadbed project

作　　者：柳爱[1] 邹永诚 谢丽民 

机构地区：[1]台州职业技术学院,浙江台州318000 [2]台州城乡规划设计研究院,浙江台州318000 [3]台州湾循环产业集聚区管理委员会,浙江台州318000

出　　处：《人民长江》2012年第11期62-65,85,共5页Yangtze River

基　　金：台州市科技计划项目"台州深厚软土路基处治关键技术研究"(11KY56)

摘　　要：针对软弱黏土路基易发生失稳及工后沉降大的缺点,采用塑料排水板堆载预压对路基进行处理。采用等效砂墙方法及剑桥模型,建立了台州湾围海工程路基堆载预压处理的平面有限元模型。分析不同堆载高度下塑料排水板间距和长度对加载速度、预压时间和沉降值的影响。分析结果表明,预压时间受排水板长度影响明显;预压期结束后,路面沉降均匀,可以保证路面施工质量。Soft clay roadbed has disadvantages of easy instability and large settlement. We take measures of pre - loading drainage plate to treat the roadbed accordingly. Based on equivalent sand - wall method and Cambridge model, a plane FEM model is established for pre - loading roadbed treatment in a sea reclamation engineering at Taizhou Bay. The influence of length and distance of plastic drainage plate on the loading velocity, the pre - loading time and the settlement amount under different loading heights are analyzed. The results show that the pre - loading time is significantly affected by the length of drainage plate; even road settlement occurred after pre - loading period, which ensures the construction quality.

关 键 词：软土 堆载预压 塑料排水板 固结 

分 类 号：U213.1[交通运输工程—道路与铁道工程]