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| 长期循环荷载下粉细砂的累积变形特性 | |
| 引用本文： | 姚兆明,黄茂松,张宏博.长期循环荷载下粉细砂的累积变形特性[J].同济大学学报(自然科学版),2011,39(2):204-208. |
| 作者姓名： | 姚兆明 黄茂松 张宏博 |
| 作者单位： | 1. 同济大学,地下建筑与工程系,上海,200092;安徽理工大学,土木建筑学院,安徽,淮南,232001 2. 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 3. 山东大学,土建与水利学院,山东,济南,250061 |
| 基金项目： | 国家自然科学基金项目(50778132)；国家高技术研究发展计划（2007AA11Z117）；上海市自然科学基金(08ZR1420100) |
| 摘 要： | 在分析循环荷载下粉细砂轴向塑性累积变形受初始孔隙比、有效固结压力及动应力比等因素影响规律基础上,考虑动偏应力水平及初始固结压力影响,建立了一种参数具有明确物理意义的计算粉细砂在循环荷载作用下轴向塑性累积变形的显式模型.通过对上海地区粉细砂非等向固结排水循环三轴试验结果进行模拟,得到了相关参数,验证了模型的有效性和合理性. |
| 关 键 词： | 动偏应力水平 长期循环荷载 塑性累积应变 |
| 收稿时间： | 2009/11/6 0:00:00 |
| 修稿时间： | 2010/12/30 0:00:00 |
Character for Cumulative Deformation of Silty Sands Under Long Term Cyclic Loading |
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| YAO Zhaoming,HUANG Maosong and ZHANG Hongbo.Character for Cumulative Deformation of Silty Sands Under Long Term Cyclic Loading[J].Journal of Tongji University(Natural Science),2011,39(2):204-208. | |
| Authors: | YAO Zhaoming HUANG Maosong and ZHANG Hongbo |
| Institution: | 1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;2.School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;3.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education,Tongji University,Shanghai 200092,China;4.School of Civil Engineering,Shandong University,Ji’nan 250061,China) |
| Abstract: | Based on an analysis of effect of the initial pore ratio,effective consolidation pressure and dynamic stress ration on the axial plastic cumulative deformation of the silty sand and a consideration of the effect of the dynamic partial stress level and the initial consolidation pressure of the silty sand, an explicit model of which parameters were of physical significance was build up to calculate the axial plastic accumulative strain of silty sands under cyclic loading. Parameters of the explicit model were determined by undrained cyclic triaxial tests on anisotropically consolidated Shanghai silty sands and validity of the model was verified by the cyclic tested data. |
| Keywords: | dynamic deviator stress level long term cyclic loading plastic accumulative strain |
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