中南大学学报（自然科学版）2017，Vol.48Issue(2)：506-511,6.DOI:10.11817/j.issn.1672-7207.2017.02.031
配筋对混凝土徐变的影响分析
Analysis of reinforcement influence on concrete creep
摘要
Abstract
Based on the age-adjusted effective modulus method (AEMM) and internal force redistribution mechanism, the reinforced correction coefficient was introduced to predict the creep of reinforced concrete and deduce the corresponding calculation formula. The validity and practicability of the reinforced correction coefficient were verified by fitting analysis of the related data. The calculation formula of reinforced concrete creep based on the current code for design of highway reinforced concrete and prestressed concrete bridges and culverts were proposed. Furthermore, the effects of different parameters such as aging coefficient, reinforcement ratio and loading age were analyzed. The results show that reinforcement exerts the inhibitory effect on concrete creep. The inhibitory effect is the strongest when the reinforcement ratio is small and it gradually weakens when the reinforcement ratio increases. Loading age and reinforcement exert additive influences on concrete creep, which is not a simple linear superposition.关键词
钢筋混凝土柱/徐变/钢筋修正系数/基于龄期调整的有效模量法/配筋率Key words
reinforced concrete column/creep/reinforced correction coefficient/AEMM method/reinforcement ratio分类
建筑与水利引用本文复制引用
曹国辉,阳亮,张锴,彭细荣..配筋对混凝土徐变的影响分析[J].中南大学学报（自然科学版）,2017,48(2):506-511,6.基金项目
国家自然科学基金资助项目(51551801) （51551801）
湖南省自然科学基金资助项目(14JJ4062) （14JJ4062）
湖南省高等学校科学研究一般项目(13C116)(Project(51551801) supported by the National Natural Science Foundation of China （13C116）
Project(14JJ4062) supported by the Natural Science Foundation of Hunan Province （14JJ4062）
Project(13C116) supported by the Scientific Research Project of High School of Hunan Province) （13C116）
