吹填海砂溶陷变形试验
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国家自然科学基金(41272318,41472251);江苏省交通运输厅科研课题(2012Y01);2014年江苏省高级访问学者研究课题(2014FX086)


Experiment on subsidence deformation of dredger fill sea sand
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    摘要:

    以江苏省启东吹填海砂为研究对象,采用固结仪测量吹填海砂的溶陷变形情况。测得启东吹填海砂的溶陷系数为1.1%,低于高等级公路路基填料溶陷系数小于1.5%的标准要求,可以用于路基填料。对启东吹填海砂掺加NaCl,人工配制成不同含盐量的试样,研究含盐量和压力对溶陷系数的影响,结果发现:随着含盐量增加,溶陷系数增加;压力为200 kPa时溶陷系数最大。

    Abstract:

    Subsidence deformation of dredger fill sea sand in Qidong City, Jiangsu Province, was studied using a consolidometer. Dredger fill sea sand with a subsidence coefficient of 1. 1%, which is less than the subsidence coefficient of the subgrade filling material of a highway, i. e. , 1. 5%, can be used as the subgrade filling material. Sea sand samples with different salt contents were prepared by adding different quantities of NaCl to investigate the effect of the salt content and pressure on the subsidence coefficient. It was found that the subsidence coefficient increased with the salt content and reached the maximum value when the pressure was 200 kPa.

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卢佩霞,徐永福,陈志明,等.吹填海砂溶陷变形试验[J].河海大学学报(自然科学版),2015,43(3):261-266.(LU Peixia, XU Yongfu, CHEN Zhiming, et al. Experiment on subsidence deformation of dredger fill sea sand[J]. Journal of Hohai University (Natural Sciences),2015,43(3):261-266.(in Chinese))

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  • 收稿日期:2014-11-12
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  • 在线发布日期: 2015-06-01
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