| 填海作用对海积软土的抗剪强度影响试验研究 |
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| 引用本文： | 刘汉民,周东,吴恒,焦文灿,王业田.填海作用对海积软土的抗剪强度影响试验研究[J].土木建筑与环境工程,2018,40(5):54-63. |
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| 作者姓名： | 刘汉民 周东 吴恒 焦文灿 王业田 |
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| 作者单位： | 广西大学 土木建筑工程学院;工程防灾与结构安全教育部重点实验室,南宁 530004;湖南科技学院 土木与环境工程学院,湖南 永州 425199
广西大学 土木建筑工程学院;工程防灾与结构安全教育部重点实验室,南宁 530004 |
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| 基金项目： | 国家自然科学基金(51178124、51378132) |
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| 摘 要： | 以钦州港临海园区和防城港企沙工业园填海场地海积软土为研究对象,分析了填海场地海积软土赋存环境要素的变化规律。采用机制模拟技术装置,对海积软土的孔隙水离子化学组分浓度和上覆填海层厚度发生变化的情况进行了人工模拟制样,获得了"印记"了赋存环境要素的人工软土样品,并对人工软土样品进行了直剪试验。结果表明:填海层对海积软土层的附加荷载应力、水力联系变化、水化学场变化三大赋存环境要素可采用"一种土的浸泡荷载联动装置"进行模拟;随着填海层附加荷载应力的增大,人工软土样的粘聚力c和内摩擦角φ随之增大;随着浸泡液不同离子成分浓度变化,对人工软土样的粘聚力c和内摩擦角φ影响效果不一,随着离子浓度的增加,Ca2+比Mg2+对抗剪强度指标的影响大;填海层附加荷载应力与浸泡液离子组分双因素同时作用下,对土样的抗剪强度指标存在相互耦合效应,其耦合效应对黏聚力影响明显,对内摩擦角影响较小。
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| 关 键 词： | 填海造地 海积软土 赋存环境 抗剪强度 耦合效应 |
| 收稿时间： | 2017/11/14 0:00:00 |
Experimental analysis on coastal reclamation impact on shear strength of marine soft soil |
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| Liu Hanmin,Zhou Dong,Wu Heng,Jiao Wencan and Wang Yetian.Experimental analysis on coastal reclamation impact on shear strength of marine soft soil[J].土木建筑与环境工程,2018,40(5):54-63. |
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| Authors: | Liu Hanmin Zhou Dong Wu Heng Jiao Wencan and Wang Yetian |
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| Affiliation: | College of Civil Engineering and Architecture;Key Laboratory of Disaster Prevention and Structural Safety of the Ministry of Education, Guangxi University, Nanning 530004, P. R. China;College of Civil and Environmental Engineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, P. R. China,College of Civil Engineering and Architecture;Key Laboratory of Disaster Prevention and Structural Safety of the Ministry of Education, Guangxi University, Nanning 530004, P. R. China,College of Civil Engineering and Architecture;Key Laboratory of Disaster Prevention and Structural Safety of the Ministry of Education, Guangxi University, Nanning 530004, P. R. China,College of Civil Engineering and Architecture;Key Laboratory of Disaster Prevention and Structural Safety of the Ministry of Education, Guangxi University, Nanning 530004, P. R. China and College of Civil Engineering and Architecture;Key Laboratory of Disaster Prevention and Structural Safety of the Ministry of Education, Guangxi University, Nanning 530004, P. R. China |
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| Abstract: | |
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| Keywords: | coastal reclamation marine soft soil environmental factors shear strength coupling effect |
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