Simplified Application of Standard Penetration Test in Seismic Liquefaction Evaluation in Tianjin Region

Based on the engineering geological features in Tianjin and the related standards,the critical standard penetration test value for seismic liquefaction evaluation is defined by depth under the most disadvantageous conditions.Thus,the actual standard penetration test value can be directly used to assess the liquefaction potential of silt and sand in the field without the result of grain size analysis from laboratory test,when the number of blows of standard penetration actually measured are more than those under the most disadvantageous condition.The simplified application can not only satisfy the demand of the relevant standards and but also reduce laboratory test quantity and the investigation cost.So,it is worthy to be recommended.