岩土工程学报2023，Vol.45Issue(z2)：19-24,6.DOI:10.11779/CJGE2023S20047
考虑沉积时间效应的原位砂土抗液化强度剪切波速评价
Shear wave velocity-based evaluation of liquefaction resistance of in-situ sand with aging effects
摘要
Abstract
The shear wave velocity is one of the commonly used parameters to evaluate liquefaction resistance of sandy soils.In this study,based on the initial liquefaction criterion-based shear wave velocity characterization model(i.e.,the"Zhou-Chen model"),two correction parameters are intruduced to consider the aging effects to correct the field measured shear wave velocity and the liquefaction resistance of reconstituted sand,respectively,so that the"Zhou-Chen model"can be used to evaluate the liquefaction resistance of in-situ sandy soils.In an engineering case from Qiaojia County,Yunnan Province,both field measurements of shear wave velocity and laboratory testings are conducted to determine the parameters of the"Zhou-Chen model",and then a simplified procedure to evaluate liquefaction potential using the field shear wave velocity measurement is established.This simplified procedure is then used to evaluate the liquefaction potential of the engineering site,and the results are consistesnt with those by other methods.The proposed characterization model with further consideration of the aging effects provides a promising way to evaluate the liquefaction resistance of in-situ sandy soils with the ageing effects.关键词
抗液化强度/原位砂土/沉积时间效应/剪切波速/表征模型Key words
liquefaction resistance/in-situ sand/aging effect/shear wave velocity/characterization model分类
土木建筑引用本文复制引用
周燕国,周鑫辉,桑毅佳,石安池,陈云敏..考虑沉积时间效应的原位砂土抗液化强度剪切波速评价[J].岩土工程学报,2023,45(z2):19-24,6.基金项目
国家自然科学基金项目(52278374,51988101,51978613) （52278374,51988101,51978613）
高等学校学科创新引智计划(B18047) （B18047）
