海堤填筑料固结特性研究  

Study on Consolidation Characteristics of Embankment Filling Materials

作　　者：李文斌 谢康 周坤 丰土根[2,3] 王超然 张箭 张福海[2,3] LI Wenbin;XIE Kang;ZHOU Kun;FENG Tugen;WANG Chaoran;ZHANG Jian;ZHANG Fuhai(Fujian Water Conservancy Planning Institute,Fuzhou,Fujian 350001,China;Research Institute of Geotechnical Engineering,Hohai University,Nanjing 210098,China;Key Laboratory for Geotechnical Engineering of Ministry of Water Resource,Nanjing 210098,China)

机构地区：[1]福建省水利规划院,福建福州350001 [2]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [3]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098

出　　处：《河北工程大学学报（自然科学版）》2020年第2期59-64,共6页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51009054);教育部科学技术研究重点项目(109077);江苏省科学基金资助项目(BK2010513);中央高校基本科研业务费专项资金资助项目(2014B04914)。

摘　　要：试验以海泥,山土,10%、15%、20%三种水泥掺量的海泥搅拌水泥(桩)土作为海堤填筑料。从固结特性方面研究出最适用于海堤填筑的材料,通过基本物理力学性质试验和标准固结试验获取试样的基本物理力学参数、压缩系数和固结系数,再从固结压缩变形和固结速率的角度对试样作出分析。结果表明:(1)天然海泥压缩变形最大,固结速率最小。(2)天然山土的压缩变形最小,但固结速率低于海泥搅拌水泥(桩)土。(3)随着水泥掺量的增加,海泥搅拌水泥(桩)土的压缩变形最小,相比海泥、山土,固结速率也最小,但水泥掺量对海泥搅拌水泥(桩)土的固结速率影响不大。故从固结特性角度得出,水泥掺量为20%的海泥搅拌水泥(桩)土是最适用于海堤填筑的材料。In the experiment,sea mud,mountain soil,10%,15%,20%of sea mud mixed with cement(pile)soil were used as embankment filling materials.In this paper,the most suitable material for embankment filling material was studied from the aspect of consolidation characteristics.The basic physical and mechanical parameters,compression coefficient and consolidation coefficient of the sample were obtained through the basic physical and mechanical property test and standard consolidation test.Then the sample was analyzed from the angle of consolidation compression deformation and consolidation rate.The results show that:(1)the compression deformation of natural sea mud is the largest,and the consolidation rate is the smallest.(2)The compression deformation of natural mountain soil is the smallest,but the consolidation rate is lower than that of cement(pile)soil mixed with sea mud.(3)With the increase of cement content,the compression deformation of cement(pile)soil mixed with sea mud is the smallest,and the consolidation rate is the smallest compared with that of sea mud and mountain soil,but the cement content has the least effect on cement mixed with sea mud The consolidation rate of soil(pile)has little effect.Therefore,from the perspective of consolidation characteristics,it is concluded that the cement(pile)soil mixed with 20%cement is the most suitable material for embankment filling.

关 键 词：基本物理力学性质试验 标准固结试验 压缩系数 固结系数 

分 类 号：TU441[建筑科学—岩土工程]