Prognosis analysis of strength of H-beams considering corrosion effects

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Li, Meng^1 ; Lei, Mingbo^2 ; Li, Junxin^1^3 ; Li, Genqiang^1

School of Architecture and Civil Engineering, Xiamen Institute of Technology, Fujian Province, Xiamen

361021, China^1

Wuhan Integrated Transportation and Urban Construction Design Institute, CCCC First Highway Consultants Co. Ltd, Hubei Province, Wuhan

430068, China^2

School of Human Settlements and Civil Engineering, Xi' An Jiaotong University, Xi'an, Shanxi Province

710048, China^3

关键词: Attenuation model;    Beam strength;    Corrosion effects;    Target design;    Test data;    Weibull models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012082/pdf
DOI  :  10.1088/1755-1315/218/1/012082

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The bearing capacity of components under the influence of corrosion was studied to predict the service life of corroded H-beams. Firstly, based on the experimental data of mechanical properties of corroded steel, the Weibull model was used to fit the test data to obtain corrosion H-beam strength prognosis curve. Then, combined with the target design strength value, the prognosis analysis of the corroded H-beam was carried out. Finally, a numerical example was given to verify the effectiveness of the proposed method. The Weibull model could well fit and predict the bearing capacity of corroded H-beams. According to the bearing capacity attenuation model of H-beams, the service life of the H-beams in our research was well predicted, about 66.5 years. In conclusion, the proposed method can well predict the life of corroded H-beams and it has been verified feasibility and effectively.