| 频率对K_0固结饱和粘土动力特性影响的试验分析 |
| |
| 引用本文： | 王建华,赵致艺,赵晨玲.频率对K_0固结饱和粘土动力特性影响的试验分析[J].世界地震工程,2010(Z1). |
| |
| 作者姓名： | 王建华 赵致艺 赵晨玲 |
| |
| 作者单位： | 天津大学岩土工程研究所; |
| |
| 基金项目： | 国家自然科学基金项目(50879055) |
| |
| 摘 要： | 通过循环三轴试验,研究了k0固结饱和粘土在0.5 Hz、0.1 Hz与0.01 Hz循环应力作用下,循环强度与土样破坏时最终累积孔压的变化。结果表明,当循环频率从0.1 Hz减少至0.01 Hz时,若循环应力作用下三轴土样发生应力反向,k0固结饱和粘土循环强度大约降低3%左右;若没有应力反向,且当循环破坏次数从10变化至1 000时,循环强度的降低不超过1%,若循环破坏次数大于1 000时,循环频率的改变对循环强度基本没有影响。对于有应力反向情况,循环频率减小将导致最终累积孔压比增加;对于无应力反向情况,循环频率改变对最终累积孔压比的影响并不显著。循环频率对最终累积孔压比的影响与其对循环强度的影响一致。
|
| 关 键 词： | 粘土循环强度 土动力特性 k0固结粘土 循环频率影响 |
Test analysis on effects of frequency on cyclic behavior of K_0 consolidated saturated clays |
| |
| WANG Jianhua,ZHAO Zhiyi,ZHAO Chenling.Test analysis on effects of frequency on cyclic behavior of K_0 consolidated saturated clays[J].World Information On Earthquake Engineering,2010(Z1). |
| |
| Authors: | WANG Jianhua ZHAO Zhiyi ZHAO Chenling |
| |
| Institution: | WANG Jianhua,ZHAO Zhiyi,ZHAO Chenling(Geotechnical Engineering Institute of Tianjin University,Tianjin 300072,China) |
| |
| Abstract: | Cyclic strengths and accumulative pore water pressures to failure of k0 consolidated saturated clay are studied using cyclic triaxial tests under cyclic stresses with 0.5 Hz,0.1 Hz and 0.01 Hz.Following results are obtained based on tests.The cyclic strength of k0 consolidated saturated clay decreases about 3% for reversal stress condition when cyclic frequency decreases from 0.1 Hz to 0.01 Hz.The decrease of the cyclic strength is less than 1% for the non-reversal stress condition when cyclic frequency dec... |
| |
| Keywords: | cyclic strength of clays cyclic behavior of soils k0 consolidated clays effects of cyclic frequency |
| 本文献已被 CNKI 等数据库收录！ |
|
