管袋堤体结构静动力工作性态研究  

Study on Static and Dynamic Working Performance of Geotube Embankment

作　　者：严伟[1,2,3] 蔡新[1,2,4] 明宇[1,2] 李益[1,4] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水利水电学院,江苏南京210098 [3]嘉兴市水利水电勘察设计研究院,浙江嘉兴314000 [4]河海大学力学与材料学院,江苏南京210098

出　　处：《水电能源科学》2013年第10期94-96,108,共4页Water Resources and Power

基　　金："十二五"国家科技支撑计划课题基金资助项目(2012BAB03B02)

摘　　要：为研究管袋堤体结构的安全可靠性,借助大型岩土FLAC3D软件,采用快速拉格朗日时域有限差分法对某高水位下的管袋堤体进行静动力数值模拟计算。结果表明,在水压力和浪压力作用下该管袋堤体未产生较大变形,边坡稳定安全系数较高,管袋层之间无相对滑动;抗震设防烈度7度条件下堤顶部分变形较大,堤体结构有效高度下降较多,砂土层液化度达0.9,有发生液化的可能,应采取有效的抗液化措施对地基进行处理。In order to research the safety reliability of geotube embankment, fast Lagrangian time domain linite difference analysis and the large scale geoteehnieal software FLAC-3D were adopted for geotube embankment＇s static and dynamic simulation under high water level. The results indicate that the geotube embankment changes a little under the action of water pressure and wave force, and it has a high slope safety coefficient, and there is no relative sliding between geotube layers. The top of geotube embankment has large deformation by the grade 7 earthquake and it＇s effective height is largely decreased, and the degree of liquefaction reaches 0.9. Effective measures should be taken to resist liquefying in the process of foundation treatment.

关 键 词：水工结构 管袋堤体 数值模拟 稳定分析 地震液化 

分 类 号：TV649[水利工程—水利水电工程]