充填泥袋筑堤关键技术的离心模型试验研究  

Centrifuge Model Test on the Key Technology of Embankment with Filled Soil Bags

作　　者：王雪奎[1,2] 王年香[2] 顾行文[2] 朱群峰[2] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]南京水利科学研究院岩土工程所,江苏南京210024

出　　处：《郑州大学学报（工学版）》2014年第5期64-68,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51179106);国家高新技术研究发展计划863资助项目(2012AA112509)

摘　　要：以连云港30万吨级航道建设工程为依托,对以疏浚淤泥为充填材料的充填泥袋筑堤的关键技术问题进行了离心模型试验研究.试验的结果表明:(1)充填泥袋的沉降主要发生在施工期,竣工后变化很小,从沉降安全上考虑,黏粒含量不宜大于22%;(2)泥袋的沉降随黏粒含量的增加而增大,不排水强度随黏粒含量的增加而减小;(3)泥袋堤体的沉降在堤体范围内呈现中间大两边小的分布,在筑堤的过程中,堤身发生比较大的压缩;(4)泥袋堤体失稳时,变形主要表现为沉降,水平变形较小,表现为圆弧滑动破坏型式.Based on the waterway engineering of three hundred thousand tons in Lianyungang harbor,centrifuge modeling test are used to study the key technology of embankment with filled soil bags.The Results of centrifuge modeling test show that：（1） The settlement of the embankment mainly happened in construction but very small after completion,considering the security of settlement,the clay content of filled soil should be controlled under 22％ ;（2）As clay content of filled soil increases,the settlement increases but the undrained shear strength of filled soil decrease; （3） The settlement of the embankment is large in the center but small at both sides,the compression of the embankment is large; （4） When the embankment failed,the settlement is primary but horizontal deformation is small,the failure model of embankment is circular sliding.

关 键 词：泥袋堤坝 离心试验 关键技术 

分 类 号：TV49[水利工程—水工结构工程]