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| 饱和砂土液化特性的可视化试验研究 | |
| 引用本文： | 杨永香,周健,贾敏才,胡金虎.饱和砂土液化特性的可视化试验研究[J].岩土力学,2011,32(6):1643-1648. |
| 作者姓名： | 杨永香 周健 贾敏才 胡金虎 |
| 作者单位： | 1. 华北水利水电学院资源与环境学院,郑州,450011 2. 同济大学地下建筑与工程系,上海,200092;同济大学地下建筑与工程系,上海,200092 3. 同济大学地下建筑与工程系,上海,200092;同济大学岩土及地下工程教育部重点实验室,上海,200092 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 针对目前散粒体液化细观机制研究的局限性,对C.K.C型动态三轴仪进行改进,研制了可用于研究散粒体细观组构特征的动三轴可视化试验系统。利用该系统对循环荷载作用下标准砂的颗粒运动规律及细观组构特征进行初步探讨,从颗粒的运动规律、定向性、配位数和孔隙率等细观角度分析了循环荷载作用下饱和砂土发生液化的细观机制,认为液化的发生是土体在循环荷载作用下颗粒不断运动、重新排列的结果,指出颗粒长轴方向、配位数和孔隙率等细观组构参量是反映循环荷载作用下饱和砂土液化宏观响应的重要参量。 |
| 关 键 词： | 可视化 动三轴试验 饱和砂土 液化 细观组构 |
| 收稿时间： | 2009-11-10 |
Visualization testing on liquefaction properties of saturated sands |
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| YANG Yong-xiang,ZHOU Jian,JIA Min-cai,HU Jin-hu.Visualization testing on liquefaction properties of saturated sands[J].Rock and Soil Mechanics,2011,32(6):1643-1648. | |
| Authors: | YANG Yong-xiang ZHOU Jian JIA Min-cai HU Jin-hu |
| Institution: | 1. Institute of Resources and Environment, North China Institute of Water Resources and Electric Power, Zhengzhou 450011, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China |
| Abstract: | Based on the C.K.C cyclic triaxial testing system,a cyclic triaxial visible testing system was designed for studying the liquefaction behavior of saturated sands at the meso-mechanical level.The cyclic triaxial visualization testing was performed on saturated sands.The meso-fabric characteristics of saturated sands were studied such as motion and macro-axis orientation for sand granules,average coordination number and porosity.The results show that,sand granules continuously rearrange and redirect for the n... |
| Keywords: | visualization cyclic triaxial testing saturated sands liquefaction meso-fabric |
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