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| STUDY OF EVALUATION METHOD OF LIQUEFACTION FOR SANDY SOIL IN DEEP LAYER：TAKING UNDERSEA TUNNEL SITE OF HONGKONG—ZHUHAI—MACAO GREAT BRIDGE FOR EXAMPLE |
| HUANG Yahong，LU Yuejun，RONG Mianshui，FANG Yi |
| (Institute of Crustal Dynamics，China Earthquake Administration，Beijing 100085，China) |
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Abstract In order to evaluate the liquefaction of sandy soil in a depth range from surface to 43 m for the undersea tunnel project of the Hongkong—Zhuhai—Macao Great Bridge in detail，the method which combines the experiment data from the dynamic triaxial liquefaction test and the equivalent uniform cyclic shear stress deduced from the analysis method of equivalent linearized seismic response of soil layers，is used to give a primary evaluation. Then，the dynamic response method for potential liquefaction analysis is used to further evaluate and classify the liquefaction in detail. The result shows that liquefaction is still possible for the sandy soil with the depth more than 20 m. Considering that there is no specific code yet in Chinese Mainland for the evaluation of liquefaction of sandy soil with the depth more than 20 m，the strategy and method in this paper which are used to evaluate the sandy soil liquefaction in deep layer will be useful for references.
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Received: 25 November 2011
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2012, Vol. 31 
