中南大学学报（自然科学版）2011，Vol.42Issue(5)：1399-1405,7.
基于黏结-滑移效应的钢筋混凝土梁裂缝宽度数值计算
Numerical analysis for crack width of reinforced concrete beam with bond-slip effect
摘要
Abstract
The element principle of bond-slip relation in calculating structural crack width was briefly introduced, and the necessity to adopt numerical analysis was pointed out.Then, a numerical model for analyzing the crack width of reinforced concrete (RC) beams was built, which took bond-slip relationship between concrete and steel bar, tensionstiffening effect of concrete and nonlinear constitutive relationships of materials into account.Based on the experimental results of eight RC beams with 500 MPa steel bars, a comparison between model predictions, test observations and formula calculations was made.The outcome indicates that the predicted results agree well with the test values and the mean and coefficient of variation of their ratios are 1.098 and 0.146 5, respectively.And the calculations are greater than test values and should be modified.Based on analytical example, it can be concluded that the numerical model agrees with code formula in the calculation of mean crack width and it is practical in predicting crack width for RC beams.关键词
钢筋混凝土/受弯构件/黏结-滑移效应/裂缝宽度/数值模型分类
建筑与水利引用本文复制引用
陆春华,金伟良,蒋遨宇,陈驹..基于黏结-滑移效应的钢筋混凝土梁裂缝宽度数值计算[J].中南大学学报（自然科学版）,2011,42(5):1399-1405,7.基金项目
国家科技支撑计划项目(2006BAJ03A02) （2006BAJ03A02）
国家自然科学青年基金资助项(50908103) （50908103）
