期刊论文

Assessment of Sandy Soil Liquefaction Potential Based on Unascertained Average Clustering Method

中文

地下空间与工程学报

1673-0836

2017

13

2

517-524

(2013ZDXK006):湖南省重点学科建设项目 (104-0094):中南林业科技大学引进***人才科研启动基金

本校为第一机构

基于未确知测度理论,建立了砂土地震液化判别和液化势分级的未确知均值聚类分析模型和方法。针对砂土地震液化评价中的许多不确定性影响因素,选用地震震级,地面地震加速度幅值,标准贯入击数,比贯入阻力,砂土相对密实度,砂土平均粒径和场地地下水位等7个评价指标作为判别因子;选用17个砂土样本作为训练样本,建立各评价指标的未确知测度函数,以样本中的各评价指标数据的平均值表示其分类中心;利用相似权赋权方法确定评价指标的权重,依据未确知测度距离判别地震液化等级;根据建立的模型对训练样本回判,回判正确率为94.12%。将建立的模型对20个测试样本进行判别,将判别结果与地震液化的实际情况、BP...

Based on unascertained measurement theory,a unascertained average clustering model（UACM） was established for the identification and classification of seismic liquefaction of sandy soil. Aiming at unascertained factors in the analysis of sand liquefaction evaluate,earthquake magnitude,peak value of ground surface acceleration,standard penetration number, specific penetration resistance, relative compaction, mean particle diameter and underground water table were selected as discriminant indexes; 17 sets of sand soil were selected as training s...