哈尔滨工业大学学报（英文版）2010，Vol.17Issue(5)：631-635,5.
Crack elongation and its width of large depth reinforced concrete beams
Crack elongation and its width of large depth reinforced concrete beams
摘要
Abstract
In order to meet the requirement of structural inspection,the crack spacing and crack width at various heights in the tensile zone of six large depth reinforced concrete beams were measured under several loading levels of serviceability state.The effects of the depth of normal section beams on the crack spacing and crack width were analyzed,and the modified model is proposed for calculating the average crack spacing by thinking about the depth of normal section,the reinforcement arrangement and the effective reinforcement ratio.The relationships of crack widths at any position in the tensile zone and at the reinforcement level on the side surface of beam were studied.By theoretical and statistical analysis,a method is proposed to calculate the ratios of crack widths between any position and the reinforcement level on the side surface of large depth reinforced concrete beams.关键词
reinforced concrete/beam/large depth of normal section/crack elongation/average crack spacing/ratio of crack widthKey words
reinforced concrete/beam/large depth of normal section/crack elongation/average crack spacing/ratio of crack width分类
建筑与水利引用本文复制引用
GUAN Jun-feng,ZHAO Shun-bo,HUANG Cheng-kui..Crack elongation and its width of large depth reinforced concrete beams[J].哈尔滨工业大学学报（英文版）,2010,17(5):631-635,5.基金项目
Sponsored by the Outstanding Youth Scientific Fund of Henan Province (Grant No.04120002300) and Program for Innovation in University of Henan Province(Grant No.[2004]294). （Grant No.04120002300）
