| 变电构架受损伤圆钢管杆件轴压极限承载力分析 |
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| 引用本文： | 张猛,张凯,张哲,李天,赵林.变电构架受损伤圆钢管杆件轴压极限承载力分析[J].工业建筑,2006,36(Z1):403-407. |
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| 作者姓名： | 张猛 张凯 张哲 李天 赵林 |
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| 作者单位： | 1. 同济大学,建筑工程系,上海,200092
2. 郑州大学,土木工程学院,郑州,450002 |
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| 基金项目： | 国家“十五”科技攻关项目(2002BA806B-4-3)，河南省教育厅自然科学基金资助项目(20015600011) |
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| 摘 要： | 以电力构架中常用的圆钢管杆件为研究对象,采用有限元计算和试验数据建立的回归模型方法,研究一般受损条件下杆件轴压极限承载力的变化情况。分析了凹陷深度、初弯曲、长细比和截面径厚比等参数对杆件极限承载力的影响,讨论了上述参数对荷载-轴向缩短关系的单独影响和综合影响。了解了多杆件极限承载力的特点,引入了受损杆件的折算刚度系数。所得结论为变电构架的可靠性分析和维修加固提供了依据。
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| 关 键 词： | 电力构架 回归模型 凹陷损伤 圆钢管杆件 极限承载力 荷载-轴向缩短关系 |
| 修稿时间： | 2005年11月3日 |
COMPUTATIONAL ANALYSIS OF THE ULTIMATE BEARING CAPACITY OF DAMAGED TUBULAR MEMBERS IN POWER TRANSFORMATION STRUCTURES |
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| Zhang Meng,Zhang Kai,Zhang Zhe,Li Tian,Zhao Lin.COMPUTATIONAL ANALYSIS OF THE ULTIMATE BEARING CAPACITY OF DAMAGED TUBULAR MEMBERS IN POWER TRANSFORMATION STRUCTURES[J].Industrial Construction,2006,36(Z1):403-407. |
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| Authors: | Zhang Meng Zhang Kai Zhang Zhe Li Tian Zhao Lin |
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| Abstract: | It is studied damaged tubular members,which are widely used in power transformation structures,through a regression model.The following parameters,dent-depth,initial crook,slenderness ratio and diameter-thickness ratio,are considered and their influence on ultimate bearing capacity is analyzed.Both separate influence and combined influence of the above four parameters on load-shortening relationship are also discussed.Ultimately,a coefficient of the equivalent stiffness is introduced.The results provide a theoretical foundation for the reliability analysis and reinforcement of power transformation structures. |
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| Keywords: | power transformation structures regression model dent-damage tubular members ultimate bearing capacity load-shortening relationship |
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