简支梁法测量混凝土阻尼特性试验研究  

Experimental study on concrete damping characteristics with simply supported beam measurement

作　　者：张培[1] 朱涵[2] 朱银萍[3] 

机构地区：[1]石家庄学院经济管理学院,河北石家庄050035 [2]天津大学建筑工程学院,天津300072 [3]吉林建筑大学城建学院,吉林长春130062

出　　处：《混凝土》2015年第4期65-67,73,共4页Concrete

基　　金：石家庄学院博士基金(13BS012);教育部博士点基金(20100032110043)

摘　　要：针对不同配合比及不同掺料的混凝土,通过自行研究的简支梁法测试装置对大尺寸混凝土材料试件进行了阻尼特性的研究。试验主要研究陶粒混凝土、橡胶混凝土和普通混凝土8个试件的共振幅值、混凝土应力应变等因素与混凝土试件损耗因子之间的关系。结果表明激振幅值小于临界共振幅值时,试件阻尼损耗因子并不受共振的影响,并且混凝土应变在1.6×10-7~2.4×10^(-7)范围内时,阻尼损耗因子与应变和应变率无关。Studying the large size concrete specimens damping characteristics with the simply support beam method for the various mixes and different admixtures concrete. It mainly studied the relationship between the resonant amplitude,stress,strain and the loss factor of the eight specimens include the ceramic concrete,rubber concrete and ordinary concrete. The results showthat the specimen is not affected by the damping loss factor of the resonance when the resonant excitation amplitude is less than the critical amplitude.And the damping loss factor independent of the strain and strain rate when the concrete strain in 1.6×10^-7～2.4×10^-7 range.

关 键 词：简支梁 混凝土 阻尼 损耗因子 

分 类 号：TU528.01[建筑科学—建筑技术科学]