| 黄土液化特性试验研究 |
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| 引用本文： | 周健, 黄润秋, 李喜安, 邓亚虹, 赵宁, 洪勃. 2014: 黄土液化特性试验研究. 工程地质学报, 22(s1): 454-458. DOI: 10.13544/j.cnki.jeg.2014.s1.076 |
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| 作者姓名： | 周健 黄润秋 李喜安 邓亚虹 赵宁 洪勃 |
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| 作者单位： | 1.陕西交建公路工程试验检测有限公司 西安 710117;;2.地质灾害防治与地质环境保护国家重点实验室 成都 610059;;3.长安大学地质工程与测绘学院 西安 710054 |
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| 基金项目： | 国家自然科学基金面上项目（编号：41172255），地质灾害防治与地质环境保护国家重点实验室开放资金项目（编号：SKLGP2012K028），中央高校基本科研业务费项目（0009-2014G2260008）资助 |
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| 摘 要： | 黄土是一种多孔隙弱胶结的第四纪沉积物，粉粒含量较高，同时含有一定的砂粒，因此往往具有较高的液化势。其中以黄土高原地区最为集中，该地区是我国构造活动较为活跃、地震灾害较为集中的地区，历次强震均引发严重地质灾害，以地震滑坡、震陷和液化等黄土地震灾害为主，因此该地区黄土液化特性的研究尤为重要。本文采用美国MTS公司制造MTS810Teststar程控伺服土动三轴仪为实验仪器，采用水头饱和法对饱和后的黄土试样进行振动液化试验，研究了黄土在等幅循环动荷载作用下的液化机理和液化特性，以及动荷载作用下动应变增长模式，为地震作用下黄土地基及黄土边坡稳定性问题研究提供基础理论支持。
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| 关 键 词： | 黄土 动三轴试验 动强度 液化 |
| 收稿时间： | 2014-05-10 |
| 修稿时间： | 2014-07-07 |
TEST STUDY ON THE LIQUEFACTION CHARACTERISTICS OF LOESS |
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| Zhou Jian, Huang Runqiu, Li Xi'an, Deng Yahong, Zhao Ning, Hong Bo. 2014: TEST STUDY ON THE LIQUEFACTION CHARACTERISTICS OF LOESS. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 454-458. DOI: 10.13544/j.cnki.jeg.2014.s1.076 |
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| Authors: | Zhou Jian Huang Runqiu Li Xi'an Deng Yahong Zhao Ning Hong Bo |
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| Affiliation: | 1.Shaanxi Provincial Communication Construction Testing & Measuring Co., Ltd., Xi'an 710117;;2.The National Laboratory of Geo-hazards Prevention and Geo-environment Protection, Chengdu 610059;;3.College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054 |
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| Abstract: | The loess with high content of contains some sand grains, which often has high liquefaction potential, distributes widely in Loess Plateau and liquefaction is one of the crucial potential earthquake disasters in this region. Using the MTS810Teststar servo soil dynamic triaxial apparatus as test platform, this paper firstly studied the loess saturation by the head saturation method and libration liquefaction test for the saturated loess. Then discuss liquefaction mechanism and liquefaction characteristics of the loess under the continuous cycle dynamic loads, research the loess liquefaction discrimination criterion, analyse the loess liquefaction conditions and the impact factors. In addition, study the growth pattern of dynamic pore water pressure and dynamic strain under the action of the dynamic load of the loess. At the end as it provides the basic theory for the action of loess foundation and loess slope stability research under the effects of earthquake action. |
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| Keywords: | Loess Dynamic triaxial test Dynamic strength Liquefaction |
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