动三轴试验测试土阻尼的影响因素与不足  

Influence Factors of Soil Damping Used by Dynamic Triaxial Test and its Deficiency

作　　者：申权[1] 李明俊[1] 蒋文明[1] 耿军[1] 王亚南[1] 

机构地区：[1]南昌航空大学土木与建筑工程学院,江西南昌330063

出　　处：《江西科学》2013年第1期84-89,共6页Jiangxi Science

摘　　要：动三轴试验是实验室测试土阻尼的常用方法。动三轴被广泛应用于岩土工程中土的动力特性的研究。很多学者利用动三轴对不同地区的土样进行试验,得到了大量重要数据,得出了大量重要结论,为工程抗震起到了重要作用。对现有土阻尼比的动三轴试验研究成果进行分析和评述,在此基础上,总结出了一些因素对土阻尼比的影响规律,如土的阻尼比随着含水量的增加、频率的减少和应变的增大而增加,并且指出了现阶段研究成果的不足之处。Abstract：Dynamic Triaxial test is a common method to test soil damping in laboratory. 19ynamlc t naxial has been widely applied to research on soil dynamic characteristics in geotechnical engineering. Many scholar use Dynamic Triaxial instrument to test soil samples from different places, obtainning a lot of important datum and drawing a large number of important conclusion, which plays an important role in seismic engineering. In this paper, we will analyze and evaluate the existing Dynamic Triaxial test results on damping ratio of soils. On this foundation, it sum up some influence factors on damping ratio of soil, such as, with the increase of the moisture content and strain, and the decrease of the load frequency, the soil damping ratio increase. It point out the deficiencies of current research achievements.

关 键 词：动三轴仪 土体 阻尼 实验测试 

分 类 号：TU47[建筑科学—结构工程]