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[1]高翔,王创,周星辰,等.含排水砂垫层地基平面应变固结试验[J].南京工业大学学报(自然科学版),2017,39(02):102-106.[doi:10.3969/j.issn.1671-7627.2017.02.017]
 GAO Xiang,WANG Chuang,ZHOU Xingchen,et al.Experiment of plane-strain ground consolidation with drainage sand cushion[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(02):102-106.[doi:10.3969/j.issn.1671-7627.2017.02.017]
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含排水砂垫层地基平面应变固结试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年02期
页码:
102-106
栏目:
出版日期:
2017-03-20

文章信息/Info

Title:
Experiment of plane-strain ground consolidation with drainage sand cushion
文章编号:
1671-7627(2017)02-0102-05
作者:
高翔12王创12周星辰12赵文博12雷国辉12
1.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; 2.河海大学 江苏省岩土工程技术工程研究中心,江苏 南京 210098
Author(s):
GAO Xiang12WANG Chuang12ZHOU Xingchen12ZHAO Wenbo12LEI Guohui12
1.Key Laboratory of Geomechanics and Embankment Engineering of the Ministry of Education, Hohai University,Nanjing 210098,China; 2.Jiangsu Research Center for Geotechnical Engineering Technology,Hohai University,Nanjing 210098,China
关键词:
砂垫层 渗透系数 平面应变固结试验 渗流路径 固结速率
Keywords:
sand cushion coefficient of permeability plane-strain consolidation test seepage path rate of consolidation
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2017.02.017
文献标志码:
A
摘要:
针对含水平排水砂垫层地基的平面应变固结问题,自主研制了一套平面应变固结试验装置,开展饱和重塑黏土上覆不同长度和渗透系数的砂垫层条件下的固结试验,自动量测固结过程中土体超静孔隙水压力和表面沉降量的变化,分析砂垫层长度和渗透系数对土体固结速率的影响。结果表明:固结速率并不仅仅取决于砂垫层的渗透系数,砂垫层的长度也是影响地基固结速率的重要设计参数。砂垫层越长,则地基固结速率越慢,固结完成所需要的时间越长,其原因在于,砂垫层的长度决定了土堤等工程平面应变固结中水平向渗流路径的长短。
Abstract:
A plane-strain consolidation test apparatus was developed to investigate the plane-strain consolidation problem of ground with horizontal drainage sand cushion.Consolidation tests were carried out on saturated remoulded clay overlaid by sand cushions with different lengths and hydraulic conductivities.Variations of excess pore-water pressure and surface settlement of soil were automatically measured during the process of consolidation.The effects of the length and hydraulic conductivity of sand cushion on consolidation were analyzed.Results showed that the rate of consolidation was not only dependent on the hydraulic conductivity of sand cushion.The length of sand cushion was also an important design parameter influencing the rate of consolidation of soil.The longer the sand cushion was the slower the rate of ground consolidation was and the longer the time was required to complete the consolidation.The reason is that the length of sand cushion controls the horizontal seepage path in the plane-strain consolidation in projects such as embankment engineering.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-07-13
基金项目:国家自然科学基金(51278171); 中央高校基本科研业务费专项资金(2015B06014,2015B25914)
作者简介:高翔(1990—),男,江苏南京人,硕士,主要研究方向为软基处理; 雷国辉(联系人),教授,E-mail:leiguohui@hhu.edu.com.
引用本文:高翔,王创,周星辰,等.含排水砂垫层地基平面应变固结试验[J].南京工业大学学报(自然科学版),2017,39(2):102-106..
更新日期/Last Update: 2017-03-20