STEEL BENT FRAME STRUCTURE VULNERABILITY ANALYSIS BASED ON STEEL PERFORMANCE DEGRADATION MODEL

ZHENG SHAN-SUO, DAI KUANG-YU, HAN CHAO-WEI, CHEN FEI AND SUN LONG-FEI

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (17) : 18-24.

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PDF(1900 KB)
Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (17) : 18-24.

STEEL BENT FRAME STRUCTURE VULNERABILITY ANALYSIS BASED ON STEEL PERFORMANCE DEGRADATION MODEL

  • ZHENG SHAN-SUO, DAI KUANG-YU, HAN CHAO-WEI, CHEN FEI AND SUN LONG-FEI
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Abstract

The corrosion of steel is the important factors that affect the service life of the steel structure. In order to study the effects of atmospheric corrosion on steel corrosion, the different ages of industrial steel structure buildings used in taiyuan and panzhihua districts were measured in this paper, including the test of steel corrosion depth, yield strength, ultimate strength, elongation indicators, elastic modulus and other mechanical performance indexes. Based on the measured results, the corrosion model and the mechanical properties degradation model of steel were put forward in this paper. In order to verify the reliability of the measured model, according to the indoor rapid corrosion situation, the experiment model was obtained by the steel corrosion test, and compared with the measured model. Considering the steel performance degradation continuously along with the age growth, the ABAQUS was used in this paper. By introducing the corrosion model and mechanical performance degradation model of steel into the different age of steel bent frame structure, the change law of structure failure probability and the corresponding vulnerability curve were presented. Research results can provide theoretical support for giving vulnerability database of multi-ages steel structure buildings.

Key words

Key words: steel structure / steel corrosion model / performance degradation / vulnerability / engineering test/experiment

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ZHENG SHAN-SUO, DAI KUANG-YU, HAN CHAO-WEI, CHEN FEI AND SUN LONG-FEI. STEEL BENT FRAME STRUCTURE VULNERABILITY ANALYSIS BASED ON STEEL PERFORMANCE DEGRADATION MODEL[J]. Journal of Vibration and Shock, 2015, 34(17): 18-24

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