Numerical analysis of diaphragm fatigue of reinforced concrete simply supported T-beams

被引:0
作者
Zhang C. [1 ]
Duan P. [1 ]
Zheng B. [2 ]
Li M. [3 ]
机构
[1] Chongqing Jianzhu College, Chongqing
[2] Northeast Forestry University, Haerbin
[3] Department of Civil Engineering, Cleveland state university, Cleveland, 44115, OH
关键词
Diaphragm spacing-span ratio; Fatigue performance; Finite element; Simply supported T-beam; Stress level;
D O I
10.25103/jestr.115.25
中图分类号
学科分类号
摘要
Diaphragms are important components of reinforced concrete ribbed beam bridges. Thus, diaphragm fatigue damage can seriously threaten the safety of in-service reinforced concrete ribbed beam bridges. In order to explore the fatigue performance of reinforced concrete beams and determine the internal relations between diaphragm fatigue life and fatigue load stress level, an entity analysis model of reinforced concrete simply supported T-beams was presented in this study. The spatial entity model was established by using the finite element software Midas/FEA. The correlation was analyzed on the basis of fatigue stress level, spacing-span ratio, width-height ratio, and fatigue performance of the beam diaphragms. The reliability of the calculation results was verified by using the traditional fatigue analytical methods of SN curve and Miner linear cumulative damage theory and the methods for Goodman and Gerber correction. Results demonstrate that the fatigue life of the model beam increases and the damage degree decreases when the spacing-span ratio decreases and the width-height ratio increases. The model is economically reasonable when the diaphragm spacing- span ratio and the width-height ratio are 3.58 and 0.17, respectively. The study can provide references for further improving the anti-fatigue design of reinforced concrete diaphragm beams. © 2018 Eastern Macedonia and Thrace Institute of Technology.
引用
收藏
页码:193 / 201
页数:8
相关论文
共 26 条
[1]  
Zhu H., Yu Z., Sun J., Experimental research on fatigue behavior of reinforced concrete T-beam, Journal of Highway and Transportation Research and Development, 12, pp. 53-58, (2013)
[2]  
Wang Q., Wei J., Liu X., Xu G., Equivalent static analysis method for fatigue cumulative damage process of reinforced concrete beam, Journal of Central South University (Science and Technology), 1, pp. 247-253, (2016)
[3]  
Li S., "Fatigue load model and fatigue behavior of medium & short span concrete bridges", pp. 12-17, (2015)
[4]  
Rahul B., "Fatigue analysis of concrete structures-introduction to fatigue of concrete", pp. 12-14, (2010)
[5]  
Yu Z., Qin X., Liu J., Peng H., Recent developments on chloride ion permeability in concrete subjected to fatigue loading, Journal of China & Foreign Highway, 37, 2, pp. 281-288, (2017)
[6]  
Liang J., Nie X., Masud M., Et al., A study on the simulation method for fatigue damage behavior of reinforced concrete structures, Engineering Structures, 150, pp. 25-38, (2017)
[7]  
Zhong M., Study of accumulated damage characteristics of RC shear-bending member under low cyclic fatigue loading, Journal of Highway and Transportation Research and Development, 4, pp. 80-87, (2016)
[8]  
Tong L., Liu B., Xian Q., Et al., Experimental study on fatigue behavior of Steel Reinforced Concrete (SRC) beams, Engineering Structures, 123, pp. 247-262, (2016)
[9]  
Park J.Y., Kim H.K., Fatigue life assessment for a composite box girder bridge, International Journal of Steel Structures, 14, 4, pp. 843-853, (2014)
[10]  
Zhu H., "Method and experimental research on highway reinforced concrete simply-supported girder bridge's fatigue residual service life forecast", pp. 47-52, (2011)