浅海海域饱和砂土地震液化方法分析探讨  

Analysis of Method for Seismic Liquefaction of Saturated Sandy-soil in Epicontinental Sea Area

作　　者：周玉明[1] 周世冲[2] 张家凤[1] 孙怀军[1] 刘月辉[1] 

机构地区：[1]天津市勘察院,天津300191 [2]天津大学建筑工程学院,天津300072

出　　处：《石家庄铁道大学学报（自然科学版）》2011年第2期33-37,78,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：针对浅海海域饱和砂土采用标准贯入试验法和抗液化剪应力法进行液化判别分析,对海底浅表层砂土液化判别时,发现对于设计地震第一组、7度和8度条件下,采用《建筑抗震设计规范》(GB50011)2001版推荐的原判别公式比2010版推荐的新公式液化判别结果安全度要高,当工程场地浅表层有砂土分布时,建议采用原判别公式进行液化判别更偏于安全。抗液化剪应力法对海域砂土的液化判别成功率较高,有着较好的适宜性,是值得推广应用的液化判别方法。By analyzing the seismic liquefaction of the saturated sandy-soil in the epicontinental sea area by the standard penetration test （Strl＂） method and the anti-liquefaction shear stress （ALSS） method, it is found that, for theliquefaction evaluation of shallow sandy-soil in maritime engineering site （ design earthquake group 1 , seismic precautionary intensity being 7 （ 0. 10g ） or 8 （ 0. 20g ） ） , theliquefaction evaluation formula recommended in ＂Code for seismic design of buildings＂ （ GBS0011--2001 ） is more safety than the new one recommended in ＂Code for seismic design of buildings＂（GBS0011--2010）. The oldliquefaction evaluation formula is suggested due to its safety for the condition of shallow sandy-soil distribution in construction sites, ALSS with high success rate and suitability for theliquefaction evaluation of sandy-soil in maritime engineering site is worth popularization.

关 键 词：海域 地震 砂土 液化判别 

分 类 号：TU435[建筑科学—岩土工程]