A New Fatigue Strength Measuring Method of Steel Bar in Concrete

Abstract:

According to experimental research on 10 specimen of steel bars under fatigue loading, remained static strength of bars has been measured. On the base of experimental data, a new fatigue strength (limit) measuring method of steel bars using in concrete structure has been set up. Experimental results and theoretic analysis show that the method can shorten time in experiment, reduce discreteness and improve the precision of data. The method may be used to measure fatigue limit of both not corroded and corroded bars (especially with local unsymmetrical corrosion pits) bearing fatigue loading, therefore it will be used to evaluate the residual fatigue expectation of reinforced concrete that bearing fatigue loads such as bridge structure which has served for a certain long of time and be used to make right decisions on repairing or removing structures under reversed loads.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 840-843
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.840
• Online since: February 2011
• Authors: Xiu Ning Peng, Wen Wu Lan
• Keywords: Concrete, Fatigue Strength, Remained Strength, Steel Reinforcement

References

[1] R. Lenschow: Fatigue of Concrete Structure. Fatigue of Steel and Concrete Structures, IABSE REPORTS, Vol. 37(1982): 15~24.

[2] P. K. Mehta: Durability of Concrete in Marine Environment—A Review, Performance of Concrete in Marine Environment, ACI SP—65(1980): 1-20.

DOI: 10.14359/1357

[3] W. Ahn, D. V. Reddy: Cement and Concrete Research, Vol. 31(2001): 343-349.

[4] Guofan Zhao: Reliability Theory and Its Applications for Engineering Structures. Dalian University of Technology Press, 1996 (In Chinese).

[5] Xiuning Peng: Study on Several Durability Problems of Reinforced Concrete with Bars Corroded[D]. Nanning; Guanxi University, 2004 (In Chinese).

[6] Xiuning Peng, Liangzhi Jin, Jianyang Xue: Industrial Construction, Vol. 40(2010): 101-104 (In Chinese).