砂性土地震液化的NCEER判别法在港口工程中的应用

Application of NCEER Distinguishing Method for Sandy Soil Seismic Liquefaction in Port Engineering

目前在关于砂性土地震液化的判别方面,国际工程界普遍接受的方法之一是基于Seed简化的修正NCEER判别法,在我国对外承包工程项目中应用该方法判别砂性土地震液化的工程实例也较多。以某港口项目为例,重点介绍NCEER法的基本原理和对砂性土进行地震液化判别的具体操作步骤,通过对工程计算结果进行深入分析,探讨用碎石桩改善砂性土地震液化性能的可行性,提出NCEER法计算过程中需要注意的几点问题。

Nowadays, NCEER method revised and simplified from Seed method is generally accepted as one of the methods to distinguish sand soil seismic liquefaction in international engineering field. NCEER method is also applied in many overseas contracting projects. By combining with some harbor project, we emphasize basic principle of NCEER method and the detailed steps to distinguish sand soil seismic liquefaction, analyze engineering calculation results deeply, discuss the feasibility of striking crushed stone piles to improve the seismic liquefaction nature of sand soil, and put forward a few notes for NCEER calculation.