基于材料性能退化模型的钢排架结构易损性分析

郑山锁,代旷宇,韩超伟,陈飞,孙龙飞

振动与冲击 ›› 2015, Vol. 34 ›› Issue (17) : 18-24.

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PDF(1900 KB)
振动与冲击 ›› 2015, Vol. 34 ›› Issue (17) : 18-24.
论文

基于材料性能退化模型的钢排架结构易损性分析

  • 郑山锁,代旷宇,韩超伟,陈飞,孙龙飞
作者信息 +

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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文章历史 +

摘要

钢材锈蚀是影响钢结构使用寿命的重要因素。为研究大气腐蚀对于钢材锈蚀的影响,本文对太原、攀枝花地区不同龄期的工业钢结构建筑进行了耐久性能实测与材料性能试验,内容包括钢材的锈蚀深度及其屈服强度、极限强度、伸长率、弹性模量等力学性能指标,对于实测与试验结果进行统计分析,提出了钢材的腐蚀模型及力学性能退化模型。为验证实测模型的可靠性,通过钢材腐蚀试验获得室内快速腐蚀情况下的钢材力学性能退化模型,并与实测模型进行对比分析。考虑到随着龄期增长钢材性能不断退化,借助于ABAQUS有限元分析软件平台,将钢材的腐蚀模型及力学性能退化模型引入到不同龄期钢排架结构的地震易损性分析中,获得了结构的失效概率随龄期变化的规律,并给出了相应的易损性曲线。研究成果可为基于数值建模分析获得多龄期钢结构地震易损性数据库提供理论支撑。

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.

关键词

钢结构 / 钢材腐蚀模型 / 性能退化 / 易损性 / 工程实测/试验

Key words

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

引用本文

导出引用
郑山锁,代旷宇,韩超伟,陈飞,孙龙飞. 基于材料性能退化模型的钢排架结构易损性分析[J]. 振动与冲击, 2015, 34(17): 18-24
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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