Abstract：Research purposes :As the earthquake liquefaction is as a natural phenomenon of the rock soil caused by earthquake，this should be of no relationship with engineering, but currently there is rather gaps between the similar industries in stipulation on discrimination of the liquefaction. In actual works，the different industry standards are used for the different engineerings in the same site，resulting in the big gap in discrimination of the liquefaction. Taking the discrimination results of 8 drilling holes and 23 standard penetration points obtained by using the different industry specifications as examples，this paper discusses the stipulation on discrimination of railway earthquake liquefaction combined with the relevant industry standards and the specifications in United States and Japan.
Research conclusions:(1)The depth of liquefaction is 20 m below ground(including 7 degrees range).(2)The formula presented in the Code for Seismic Design of Buildings(GB 50011-2010)can be used as the liquefaction formula.(3)The foundation liquefaction can be graded according to the Table 4. 3. 5 of the Code for Seismic Design of Buildings(GB 50011-2010).(4)This research results are available for revision of the relative codes and can be directly used in the bridge construction site with friction pile to be on the safe side.
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2013, Vol. 30 
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