几种老化系数计算方法的比较  

Comparative study on the methods for aging coefficient calculation

作　　者：饶瑞[1] 刘爱荣[1] 王荣辉[2] 

机构地区：[1]广州大学广州大学-淡江大学工程结构灾害与控制联合研究中心,广东广州510006 [2]华南理工大学土木与交通学院,广东广州510640

出　　处：《广州大学学报（自然科学版）》2011年第4期4-8,共5页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学基金项目(50978062);广东省自然科学基金项目(9151065004000002);广东省科技计划项目(2010A030200014);广州市建委专项科技项目(2004047)资助

摘　　要：以计算结果与Bastgen试验结果的吻合程度作为判别计算精度的标准,比较继效法、老化法、B-K法、王勋文法和中值法5种老化系数计算方法对于长期老化系数和短期老化系数的计算精度,讨论了TROSTH、周建民老化系数建议值的合理性.研究发现:王勋文法无论在长期老化系数还是短期老化系数的计算上均有较高精度.在采用按龄期调整的有效模量法分析具有多次加载过程的结构徐变分析时,宜用该方法计算老化系数.Comparative study is conducted with consideration of the following five aging coefficient calculation methods with respect to the accuracies of the long term aging coefficient and the short term aging coefficient ： the methods based on the rate of creep theory, the rate of flow theory and the mean value theorem, and the methods proposed by Bazant and Kim and by Wang respectively. The rationalities of the values of aging coefficient sug- gested by Trost and by Zhou are also discussed. Comparing the results obtained by the methods mentioned above and the results of the relaxation test by Bastgen, it is found that the method proposed by Wang results in more accurate aging coefficient in both long term and short term. In the methods mentioned above, Wang＇s method is the most suitable method for aging coefficient calculation in the creep analysis using the age-adjusted effective modulus method.

关 键 词：徐变 按龄期调整的有效模量法 老化系数 

分 类 号：U441[建筑科学—桥梁与隧道工程]