土体液化判别方法在振动注浆机具研制中的应用  

The Research of Soil Liquefaction Estimation Method for the Design of Vibration Grout Machine

作　　者：孙斌堂[1] 凌晨[2] 凌贤长[2] 金绵存 朱国荣[1] 

机构地区：[1]南京大学 [2]哈尔滨工业大学 [3]湖州市工程建设监理公司,浙江湖州313000

出　　处：《防灾减灾工程学报》2006年第2期158-163,共6页Journal of Disaster Prevention and Mitigation Engineering

基　　金：哈尔滨市科技攻关计划项目(2003AA9CG048);国家自然科学基金项目(50378031;50178027)

摘　　要：直接针对振动注浆机具振源设计的需要,根据实际地震液化资料和室内土动力液化试验资料,基于土体液化影响因素多元拟合相关性分析结果,通过概率处理的办法求解土体动力液化的概率模型判别式。回判检验证实,所求的概率模型判别式具有较高的回判成功率(78.8%),能够满足岩土地震工程对精度的一般要求。进一步分析表明,通过该概率模型判别式,可以建立振动注浆机具的振源特性与土的特性和埋深、振动持时之间关系,从而为振动注浆机具的研制提供必要的振源设计参数。To meet the need of design of vibration grout machine, the paper got a soil dynamic liquefaction discriminant according to the liquefaction datum of earthquakes and experiments in laboratories. Concerned with the factors which affect the soil liquefaction, the discriminant was got with multiple regression and probability analysis. To prove the reliability, the discriminant was returned to original data. The returned result is satisfying （the accuracy rate is 78.8%）, which can meet the requirement for usual geotechnical engineering. The deep analysis made it clear that the relation between vibration characteristic and soil property on the condition of liquefaction could be got by the discrimination, which provides the needed design parameters of vibration grout machine.

关 键 词：概率模型判别式 土体动力液化 振动注浆机具 

分 类 号：TU435[建筑科学—岩土工程]