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粗粒土试样橡皮膜嵌入影响的初步研究 被引量:11

A PRELIMINARY STUDY ON MEMBRANE PENETRATION EFFECTS IN COARSE GRAINED SOIL SPECIMENS
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摘要 针对直径为 30 0 mm的粗粒土试样 ,通过在试样周围填充细砂的方法来消除橡皮膜嵌入的影响。饱和固结不排水往返加荷三轴试验表明 ,由于橡皮膜嵌入的影响 ,延缓了孔隙水压力的上升 ,使试样的液化应力比增大 1 4%~ 1 8% ,在应用试验资料时 。 By filling peripheral specimen voids with fine sand the membrane penetration effects may be eliminated in coarse grained speciments of 300 mm in diameter with a maximum particle size of 60 mm. The saturated, consolidated, undrained cyclic triaxial test results on these specimens show that the membrane penetration delays the development of pore water pressure and increases the liquefaction stress ratio by 14%~18%. So the test results should be corrected when applied.
出处 《大坝观测与土工测试》 2000年第4期45-46,49,共3页 Dam Observation and Geotechnical Tests
关键词 粗粒土试样 橡皮膜嵌入 液化应力比 coarse-grained soil specimen membrane penetration liquefaction stress ratio
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参考文献5

  • 1Lade p V, Hernandee S B, Membrane Penetration Effects in Undrained Tests. Journal of the Geotecbnical Engineering Division, ASCE, 1977, 103(GT2): 109-125. 被引量:1
  • 2Kiekbusch M, Schuppener 13. Membrane Penetration and Its Effects on Pore Pressures. Journal of the Geotechnical Engineering Division, ASCE, 1977, 103(GTll): 1267-1280. 被引量:1
  • 3Ramana K V, Raju S, Membrane Penetration in Triaxial Tests. Jotirnal of the Geotechnical Engineering, ASCE,1982, 108(GT2). 被引量:1
  • 4周景星 周克骥 王洪瑾.动三轴试验中橡皮膜顺变性的影响及其校正方法[J].水利学报,1986,(5):9-15. 被引量:3
  • 5中华人民共和国水利部主编.中华人民共和国国家标准土的分类标准.北京:中国计划出版社,1991. 被引量:1

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