Effect of Cyclic Loading on Filtration Behaviour of Subballast Material

机译：循环载荷对水下压载物过滤性能的影响

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Filtration behaviour of subballast material was investigated in the laboratory using a new cyclic filter test apparatus. Tests were conducted on subballast-subgrade materials having a constant piping ratio of 9 and a cyclic pressure of 75-140 kPa at 2 - 15 Hz frequency. Results from this study showed a considerable influence of loading frequency on the filtration behaviour of subballast material. In particular, the loss of subgrade soil was observed to increase with the increase in loading frequency. This implies that subballast-subgrade interface which is stable at lower frequency may be unstable at much higher frequency typical of fast modern train. Therefore, the effect of frequency in the design of subballast material under cyclic loading needs to be considered.

机译：在实验室中，使用新型循环过滤器测试设备研究了镇流器材料的过滤行为。在2-15 Hz频率下，对具有9的恒定管道比和75-140 kPa的循环压力的路基压实路基材料进行了测试。这项研究的结果表明，装载频率对水下压载物过滤性能的影响很大。特别地，观察到路基土壤的损失随着装载频率的增加而增加。这意味着在较低频率下稳定的子镇流器-路基界面在快速现代列车典型的较高频率下可能不稳定。因此，需要考虑频率对循环荷载下子镇流器材料设计的影响。

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来源
《GeoShanghai International Conference; 20060606-08; Shanghai(CN)》|2006年|P.180-186|共7页
会议地点 Shanghai(CN)
作者
E. Kabir; A. Haque; A. Bouazza;
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作者单位

Postgraduate Research Student, Department of Civil Engineering, Monash University, Victoria 3800, Australia;

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原文格式 PDF
正文语种 eng
中图分类规划、勘测与设计;
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Effect of Cyclic Loading on Filtration Behaviour of Subballast Material

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