冷热不均环境下混凝土粘性衰退曲线描述  

Description of Concrete Viscosity Decline Curve Under Uneven Environment

作　　者：牛少儒[1,2] 丁锐[3] 

机构地区：[1]内蒙古建校建筑勘察设计有限公司结构设计部,内蒙古呼和浩特10010 [2]内蒙古建筑职业技术学院建筑工程学院,内蒙古呼和浩特10010 [3]内蒙古建筑职业技术学院市政与路桥工程学院,内蒙古呼和浩特10010

出　　处：《科技通报》2014年第8期158-160,共3页Bulletin of Science and Technology

摘　　要：研究了冷热不均环境下的混凝土粘性特性。冷热不均环境下,混凝土的粘性会受到温度的影响而体现出不同的混凝土特性。以一段试件处于屋内,一段试件处于屋外的混凝土进行试验,采用有限元分析方法,构建不同温度环境下的混凝土粘性有限元分析模型。通过对于屈服前侧移和粘性塑性位移的分析,最终分别对-10℃、10℃、30℃、50℃时的粘性滞回曲线和混凝土粘性退化曲线进行对比。试验结果表明,不同温度下的混凝土粘性体现出不同的特性,随着温度的升高,粘性退化曲线随之稳定,曲线在下降过程中最终会稳定在相应的退化值,表明性能的稳定点,此方法对于混凝土的粘性结构分析具有很好的指导价值。The characteristic of the concrete viscosity in enthusiasm environment was researched. In enthusiasm environ-ment, the concrete ability was affected by the viscosity of the temperature, and in enthusiasm environment, the difference of the concrete properties was shown. In some specimens in the house, some specimens in outdoor concrete columns were test-ed, the finite element method was used to do analysis, with finite element analysis of concrete viscosity, the models was build with different temperature environments, through the front sway and sticky plastic yield displacement analysis, even-tually were viscous-10 ° , 10 ° , 30 ° , 50 ° when the hysteresis curve and viscous concrete degradation curve for compari-son, test results show that the concrete viscosity reflect the different characteristics at different temperatures, with the tem-perature increases, the viscosity stability of the degradation curve stabilize at a value corresponding to the degradation, indi-cating a stable performance point, the viscosity of the concrete method for the analysis has good value for concrete viscous ability analysis.

关 键 词：冷热不均环境 混凝土粘性 有限元分析 

分 类 号：TU398[建筑科学—结构工程]