摘要
以茅草街钢管砼拱桥为背景,采用实桥混凝土配比,模拟截面应力状态,进行高强混凝土徐变试验研究;测试并绘出混凝土徐变发展曲线,与AC I209(82)、CEB-F IP(M C 78)、CEB-F IP(M C 90)公式计算结果进行对比,提出了高强混凝土徐变系数近似估算式.试验结果表明,采用高性能混凝土(HPC)能较好地降低徐变效应.
Based on the background of Maocaojie Arch Bridge, a test study was made of the creeping of high-performance concrete by simulating the actual concrete percentage and sectional stress state of an actual section. The regulation of the creeping change and development was tested and compared with the theoretical forecast value of ACI209 （82）, CEB-FIP （MC78）, CEB-FIP （MC90） formulas. Then an approximate estimation formula was established and in the same time, the test results demonstrate that creeping effects can well be reduced.
出处
《中南林学院学报》
CSCD
北大核心
2006年第3期113-116,共4页
Journal of Central South Forestry University
基金
中南林业科技大学青年基金项目"钢管混凝土收缩徐变性能研究"(编号05027B)
关键词
土木工程
高性能混凝土
徐变
计算
civil engineering
high-performance concrete
creeping
calculation
