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Engineering characteristics of the calcareous sand in Nansha Islands, South China Sea
文献类型：期刊论文
| 作者 | Wang, Xin-Zhi2; Jiao, Yu-Yong2; Wang, Ren2; Hu, Ming-Jian2; Meng, Qing-Shan2; Tan, Feng-Yi1 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2011 |
| 卷号 | 120页码:40-47 |
| 关键词 | Calcareous sand Nansha Islands South China Sea Engineering characteristics |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2011.03.011 |
| 英文摘要 | Calcareous sand is widespread on the coral reefs of Nansha Islands, South China Sea. It represents a special soil type due to its compressibility which results from high void ratio sediments and crushable particles. In oceanic engineering, calcareous sand is commonly used as building foundations and backfill material for road embankments or airport runways. Site investigations of coral reef geology, geomorphology and sedimentation on Yongshu Reef, Nansha Islands, South China Sea indicate that calcareous sand is the main composition of the upper reef flat, the only available site for constructions. Therefore, it is very important to estimate the engineering characteristics of calcareous sand. This paper presents the site geology of calcareous sand on Yongshu Reef and results of corresponding laboratory plate load tests. The bearing capacity and deformational behavior of calcareous sand are studied. Results of this study show that: (1) the bearing capacity of dry sand exceeds 500 kPa when the relative density is 68%, so calcareous sand can be compacted to achieve greater bearing capacity and reduce settlement; (2) plastic deformation is the main part of the ground settlement; (3) the bearing capacity of saturated calcareous sand is 50% less than that of the dry sand; (4) square foundation can provide greater bearing capacity than circular one with the same area; (5) calcareous sand ground is obviously stiffer than quartz sand ground; (6) the effective depth of load transmission is about 1.0 to 2.0 times of the load plate width and increases with the imposed load. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000291907700005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3293]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Minist Water Resources, Yangtze River Sci Res Inst, Key Lab Geotech Mech & Engn 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; |
| 推荐引用方式 GB/T 7714 | Wang, Xin-Zhi,Jiao, Yu-Yong,Wang, Ren,et al. Engineering characteristics of the calcareous sand in Nansha Islands, South China Sea[J]. ENGINEERING GEOLOGY,2011,120:40-47. |
| APA | Wang, Xin-Zhi,Jiao, Yu-Yong,Wang, Ren,Hu, Ming-Jian,Meng, Qing-Shan,&Tan, Feng-Yi.(2011).Engineering characteristics of the calcareous sand in Nansha Islands, South China Sea.ENGINEERING GEOLOGY,120,40-47. |
| MLA | Wang, Xin-Zhi,et al."Engineering characteristics of the calcareous sand in Nansha Islands, South China Sea".ENGINEERING GEOLOGY 120(2011):40-47. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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