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《Earthquake Engineering and Engineering Vibration》 2003-03
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Experimental study on influence of clay particle content on liquefaction of Nanjing fine sand

LIU Xue-zhu,CHEN Guo-xing (Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China)  
Nanjing fine sand mainly consists of schistous grain and is different from the common sand with round quartz grains. Nanjing fine sand is anisotropic because of the schistous grain. Through analyzing liquefaction test results of Nanjing fine sand, the following conclusions are drawn; for three cases of clay particle content ρc=5%、10% and 15% , during initial liquefaction taking place ,both liquefaction standard of strain and pore water pressure are identical under isotropic consolidation. However, under anisotropic consolidation, liquefaction standard of strain is only standard when initial liquefaction of Nanjing fine sand takes place, and vibratory pore water pressure is only 50% - 70% of confining pressure. The clay particle content has great influence on liquefaction resistance of Nanjing fine sand. With clay particle content increasing, the liquefaction resistance does not monotonously change under different consolidation ratio, while there is a "valley" area of liquefaction resistance value on the edge of clay particle content ρc = 10% and its liquefaction resistance is the weakest.
【Fund】: 江苏省自然科学基金(BK99125);; 结构工程江苏省重点实验室基金(020101);; 中国地震局地震工程与工程振动开放试验室基金
【CateGory Index】: P315.9;TU441
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