基于SPT和CPT法的饱和粉土地震液化综合判别

(吉林建筑大学 测绘与勘查工程学院,长春 130118)

饱和粉土,地震液化,静探试验(CPT),标贯试验(SPT),综合判断

Comprehensive judgement on earthquake liquefaction of saturated silty soil based on SPT and CPT
LI Xiang-qun,LI Bing-yao

(School of surveying and exploration engineering,Jilin Jianzhu university,Changchun 130118,China)

saturated silty soil,earthquake liquefaction,cone penetration test(CPT),standard penetration test(SPT),comprehensive judgement

备注

饱和粉土液化会直接导致建筑物地基发生失稳现象,建筑物也会由此产生开裂,严重情况下更会发生倒塌事故.目前,地基土液化的研究主要是针对砂土的而针对粉土的则较少.本文以江苏省徐州市睢宁县某场地饱和粉土为对象,综合运用SPT和CPT等方法,判别场地土液化情况,为今后工程场地液化预判提供一种新的分析判别方法,在地震作用下可有效预判饱和粉土的液化.

The ground liquefaction of the saturated silty soil can directly lead to instability of the foundation and buildings will also be cracked,even collapse accidents will occur in serious cases.At present,most research on foundation liquefaction is mainly focused on sand soil and there are a few studies on silty soil.The saturated silty soil of a certain site located in Suining is taken as the research object and the method of CPT and SPT are comprehensively applied to judge the liquefaction of the site in the paper,which provides a new analysis method for the liquefaction prediction of the construction site in the future and the method can effectively predict the liquefaction of saturated silt under the action of earthquake.