海湾相有机质浸染砂的动力特性试验研究

杜娟; 刘冰洋; 郑刚; 魏晶; 胡俊; 卫宏

doi:10.11779/CJGE2019S2017

海湾相有机质浸染砂的动力特性试验研究 English Version

杜娟^{1, 2},
刘冰洋²,
郑刚¹,
魏晶^2, ,,
胡俊²,
卫宏²

1. 天津大学建筑工程学院,天津 300072;
2. 海南大学土木建筑工程学院,海南海口 570228

基金项目: 国家自然科学基金项目（51368017）; 海南省教育厅高等学校科研项目（Hnky2016ZD-7）; 海南省重大科技计划项目（ZDKJ201803）

详细信息

作者简介:
杜娟(1978— ),女,副教授,硕士,主要从事土力学及地基处理等方面的教学和科研。E-mail: dujuan2012@hainu.edu.cn。

通讯作者:
魏晶，E-mail：874321872@qq.com

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- 文章访问数: 218
- HTML全文浏览量: 8
- PDF下载量: 85
出版历程
- 收稿日期: 2019-04-29
- 发布日期: 2019-07-19

Experimental study on dynamic characteristics of bay facies organic sand

DU Juan^{1, 2},
LIU Bing-yang²,
ZHENG Gang¹,
WEI Jing^2, ,,
HU Jun²,
WEI Hong²

1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
2. College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China

摘要

摘要: 海南省沿海地区分布着一种特殊的海湾相有机质浸染砂,为研究其动力特性,利用动三轴仪进行了不同围压和含水率下的动力变形特性及动强度特性试验研究。分析含水率、围压对其动应力-动应变关系、动弹性模量、阻尼比的影响。试验结果表明：在动应变不变的条件下,动应力随含水率的增多而减小,随围压的增大而增大;动弹性模量在含水率变化时,变化趋势较平缓;阻尼比随着动应变的增加而增大,随含水率的增大而减小。在围压改变时,阻尼比的变化不明显。为海南省海湾相有机质浸染砂地区构筑物的动力计算参数的选取提供参考依据。
- 海湾相有机质浸染砂 /
- 动三轴实验 /
- 含水率 /
- 围压 /
- 动力特性
Abstract: A special kind of bay facies organic sand is distributed in the coastal areas of Hainan Province. In order to study its dynamic characteristics, the tests on dynamic deformation and strength properties under different confining pressures and moisture contents are performed. The dynamic stress-dynamic strain relation, dynamic elastic modulus, damping ratio and dynamic strength of the samples under various moisture contents and confining pressures are analyzed. The tests indicate that, under the constant dynamic strain, the dynamic stress decreases with the increase of the moisture content and increases with the increase of the confining pressure. When the moisture content changes, the change trend of the dynamic elastic modulus is relatively gentle. The damping ratio increases with the dynamic strain and decreases with the moisture content. When the confining pressure changes, the damping ratio does not change obviously. It may provide a reference basis for the selection of dynamic parameters of structures in the bay facies organic sand-impregnated sand areas of Hainan Province.
- bay facies organic sand /
- dynamic triaxial test /
- moisture content /
- confining pressure /
- dynamic characteristic

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参考文献(13)

[1]	张慧, 李志雄, 李盛. 海南岛及近海波速比特征初步研究[J]. 地震工程学报, 2018, 40(3): 524-534. (ZHANG Hui, LI Zhi-xiong, LI Sheng.Preliminary study on the wave velocity ratio (vp/vs) in hainan island and offshore areas[J]. China Earthquake Engineering Journal, 2018, 40(3): 524-534. (in Chinese))
[2]	刘惠珊, 张在明. 地震区的场地与地基基础[M]. 北京: 中国建筑工业出版社, 1994. (LIU Hui-shan, ZHANG Zai-ming.Earthquake zone site and foundation[M]. Beijing: China Building Industry Press, 1994.(in Chinese))
[3]	刘汉龙. 土动力学与土工抗震研究进展综述[J]. 土木工程学报, 2012, 45(4): 148-164. (LIU Han-long.A review of recent advances in soil dynamics and geotechnical earthquake engineering[J]. China Civil Engineering Journal, 2012, 45(4): 148-164. (in Chinese))
[4]	张建民. 砂土动力学若干基本理论探究[J]. 岩土工程学报, 2012, 34(1): 1-50. (ZHANG Jian-min.New advances in basic theories of sand dynamics[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(1): 1-50. (in Chinese))
[5]	褚峰, 邵生俊, 陈存礼. 饱和淤泥质砂土动力变形及动强度特性试验研究[J]. 岩石力学与工程学报, 2014, 33(增1): 3299-3305. (CHU Feng, SHAO Sheng-jun, CHEN Cun-li.Experimental study of dynamic deformation and dynamic strength properties of saturated silty sand[J]. China Civil Engineering Journal, 2014, 33(S1): 3299-3305. (in Chinese))
[6]	王权民, 李刚, 陈正汉, 等. 厦门砂土的动力特性研究[J]. 岩土力学, 2005, 26(10): 1628-1632. (WANG Quan-min, LI Gang, CHEN Zheng-han et al. Research on dynamic characteristics of sands in Xiamen city[J]. Rock and Soil Mechanics, 2005, 26(10): 1628-1632. (in Chinese))
[7]	王艳丽, 胡勇. 饱和砂土动力特性的动三轴试验研究[J]. 地下空间与工程学报, 2010, 6(2): 295-299. (WANG Yan-li, HU Yong.Dynamic triaxial study on dynamic characteristics of saturated sands[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(2): 295-299. (in Chinese))
[8]	王海东, 陈曦, 李建文, 等. 大应变作用下含水率对非饱和砂土动力特性影响的研究[J]. 地震工程与工程振动, 2016, 36(1): 193-199. (WANG Hai-dong, CHEN Xi, LI Jian-wen, et al.Experimental study on the effect of water content on the dynamic characteristics of unsaturated sandy soil under large-strain[J]. Earthquake Engineering and Engineering Dynamics, 2016, 36(1): 193-199. (in Chinese))
[9]	HU Jun, ZHANG Lei, WEI Hong, et al.Experimental study of the compressive strength of chemically reinforced organic-sandy soil[J]. Geomechanics and Engineering, 2018, 16(3): 247-255.
[10]	YI Jun, WEI Hong.Existing form and causes of bay facies organic sand[J]. Applied Mechanics and Materials, 2013, (405/406/407/408): 2730-2733.
[11]	王志鑫. 海湾相有机质侵染砂的成因与工程特性的实验室研究[D]. 海口: 海南大学, 2012. (WANG Zhi-xin. laboratory studies on the causes of infected gulf-phase organic sand and engineering properties[D]. Haikou: Hainan University, 2012. (in Chinese))
[12]	胡勇士, 卫宏, 胡俊, 等. 海南有机质浸染砂变形特性研究[J]. 科学技术与工程, 2015, 15(35): 58-63. (HU Yong-shi, WEI Hong, HU Jun, et al.Study on the deformation property of organic infect sand in Hainan[J]. Science Technology and Engineering, 2015, 15(35): 58-63. (in Chinese))
[13]	周志国, 张云雁, 符必昌, 等. 昆明长水国际机场砂页岩残积红土动力特性研究[J]. 地质力学学报, 2018, 24(6): 795-802. (ZHOU Zhi-guo, ZHANG Yun-yan, FU Bi-chang, et al.A study on dynamic characte ristics of sandshale eluvial laterite at Kunming Changshui inter national airport[J]. Journal of Geomechanics, 2018, 24(6): 795-802. (in Chinese))