| 王昆耀,常亚屏,陈宁.饱和砂砾料液化特性的试验研究[J].水利学报,2000,31(2):0037-0042 |
| 饱和砂砾料液化特性的试验研究 |
| Experimental study on liquefaction characteristics of saturated sandy gravel |
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| DOI： |
| 中文关键词: 饱和砂砾料 液化 含砾量 排水条件 |
| 英文关键词: saturated sandy gravel liquefaction gravel content drainage condition |
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| 中文摘要: |
| 本文通过大型动三轴往返加荷试验(试样尺寸30×75cm)，研究了不同含砾量35%、50%、65%、80%和不同排水条件对饱和砂砾料液化特性的影响。研究结果表明，在不排水条件下，以初始液化作为破坏标准，含砾量不同对饱和砂砾料的抗液化强度影响不大；而在排水条件下，饱和砂砾料的抗液化能力则随着含砾量的增大而提高。排水条件下饱和砂砾料的动强度比不排水条件下的要高得多，而变形则明显小于不排水条件下的变形。 |
| 英文摘要: |
| Large scale cyclic triaxial tests on saturated sandy gravel with specimen size φ30×75cm were performed to investigate the effect of different gravel content and drainage condition on the liquefaction behavior of sandy gravel. Test results show that, with initial liquefaction as failure criterion, gravel contents have little influence on liquefaction resistance strength of sandy gravel under undrained condition, but under drained condition the liquefaction resistance of sandy gravel increases significantly with increase of gravel content. It is found that drainage conditions exert a significant effect on liquefaction characteristics of sandy gravel. Cyclic strength of drained sandy gravel specimen is much higher than that of undrained sandy gravel specimens, and the deformation is much smaller. |
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