天津滨海新区吹填土的动模量和阻尼比试验  

Test Research on Dynamic Shear Modulus and Damping Ratio of Dredger Fill in Tianjin Binhai New Area

作　　者：侯效毅[1,2] 赵瑞斌[1,2] 吕丽君[1,2] 陈凤飞[1,2] 

机构地区：[1]天津城市建设学院土木工程系,天津300384 [2]天津城市建设学院天津市软土特性与工程环境重点实验室,天津300384

出　　处：《天津城市建设学院学报》2009年第3期176-179,共4页Journal of Tianjin Institute of Urban Construction

基　　金：建设部软科学研究项目(05-K2-36)

摘　　要：针对天津滨海新区吹填土,通过动三轴试验模拟地震荷载,对吹填土的动模量和阻尼比进行了试验研究,探讨了频率和围压对它们的影响.研究表明:吹填土的动模量和阻尼比随着频率、围压的增加而增大;并得出了吹填土的最大动剪切模量,可供岩土和其他土木工程的地震安全性评价工作参考.Dynamic modulus and damping ratio of dredger fill in Tianjin Binhai New Area were tested while the seismic loading was simulated through dynamic triaxial testing equipment. The impact of frequency and confining pressure on dynamic modulus and damping ratio was explored. Studying results show that the dynamic modulus and damping ratio of dredger fill in Tianjin Binhai New Area improved with the increment of frequency and confining pressure. The maximum dynamic shear modulus of this kind of dredger fill was obtained which can give reference on seismic safety evaluation in geotechnical and other civil engineering project.

关 键 词：吹填土 动三轴试验 动模量 阻尼比 

分 类 号：TU449[建筑科学—岩土工程]