泥浆在单向固结时压缩曲线的归一化关系研究  

Study on the Normalized Relation of the Compression Curve of Slurry under One Dimensional Consolidation

作　　者：施维成[1] Barry Lehane 朱俊高[3] 代国忠[1] 史贵才[1] 朱建群[1] SHI Weicheng;Barry Lehane;ZHU Jungao;DAI Guozhong;SHI Guicai;ZHU Jianqun(Changzhou Key Laboratory of Structure Engineering and Material Properties, Changzhou Institute of Technology, Changzhou 213032, China;School of Civil, Environmental and Mining Engineering, University of Western Australia, Perth 6009, Australia;Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China)

机构地区：[1]常州工学院常州市建设工程结构与材料性能研究重点实验室,江苏常州213032 [2]西澳大学土木环境及采矿工程学院 [3]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

出　　处：《防灾减灾工程学报》2017年第5期790-794,共5页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51479052;51678083;41302226);江苏省六大人才高峰项目(JZ-011);江苏高校品牌专业建设工程一期项目(PPZY2015A041);湖南科技大学岩土工程稳定控制及健康监测湖南省重点实验室开放基金项目(E21620);江苏省高校"青蓝工程"项目(2016)资助

摘　　要：以西澳土料与水混合成的泥浆制备土样进行单向固结试验,同时在大量泥浆制成的重塑土单向固结试验数据基础上拟合出量纲一致的Iv—p关系式,然后根据4个界限条件对Iv—p关系式中的参数进行研究,得出泥浆在单向固结时的归一化e—p关系式。结果表明,对于初始含水率在1.25倍液限含水率附近的泥浆,p为100kPa时的孔隙比是初始孔隙比的1/2;p为1000kPa和100kPa时的孔隙比之间的比值约为0.625;从泥浆状态开始已压缩的孔隙比与当前孔隙比的比值与p/P_a在对数坐标系中成正比例关系,比例系数约为0.34。The oedometer test was performed on the reconstituted soil prepared from slurry composed by Western Australian residual soil and water.An expression with dimensional consistency of intrinsic compression line which represented the relationship between void index Ivand consolidation pressure p was proposed based on a large number of oedometer tests on reconstituted soils from slurry.Four boundary conditions were used to study the parameters in the expression between Ivand pand an e—pexpression of slurry was deduced.Meanwhile some conclusions were obtained：for slurry with the initial water content of near 1.25 times liquid limit water content.The void ratio when pis 100 kPa is half of the initial void ratio;the ratio of the void ratios when pis 1000 kPa and 100 kPa is around 0.625.The ratio of the compressed void ratio from slurry state and the current void ratio has a directly proportional relationship with p/Pain the logarithmic coordinate system and the proportionality factor is about 0.34.Finally the above conclusions were verified by test results.

关 键 词：泥浆 固结 孔隙指数 孔隙比 压缩曲线 

分 类 号：TU411.5[建筑科学—岩土工程]