轮缘
收缩率
蠕动
栏(排版)
材料科学
结构工程
参数统计
变形(气象学)
水分
扩散
复合材料
工程类
数学
连接(主束)
物理
统计
热力学
作者
Gyeong-Hee An,Seung Hee Kwon,Jin-Keun Kim
出处
期刊:Magazine of Concrete Research
[Thomas Telford Ltd.]
日期:2015-12-01
卷期号:67 (23): 1242-1256
被引量:4
标识
DOI:10.1680/macr.14.00122
摘要
Column shortening due to creep and shrinkage of concrete should be predicted accurately, especially in high-rise buildings. One of the main mechanisms of creep and shrinkage is moisture diffusion. However, in steel-reinforced concrete columns, which are widely used in high-rise buildings, the wide-flange steel located inside the column hinders the diffusion of moisture. Consequently, the long-term shortening of the column is delayed due to the slower diffusion. A prediction method that takes into account the actual moisture diffusion inside the column is suggested in this paper. The effect of the wide-flange-steel geometry on the long-term deformation of concrete in a column is precisely demonstrated through parametric studies using this method. The results of the parametric study show that the ratio of the web length of the wide-flange steel to the square column size is one of the main parameters affecting the long-term deformation of concrete in steel-reinforced concrete columns.
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