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ST12材质焊接工字形钢支撑滞回性能数值模拟
引用本文:于海丰,连尉安.ST12材质焊接工字形钢支撑滞回性能数值模拟[J].河北科技大学学报,2011,32(6):628-634.
作者姓名:于海丰  连尉安
作者单位:1. 河北科技大学建筑工程学院,河北石家庄,050018
2. 上海建筑设计研究院有限公司,上海,200041
基金项目:河北省科技支撑计划项目,河北科技大学校立基金,河北科技大学博士科研启动基金
摘    要:为研究罕遇地震情况下钢支撑的滞回性能,在已有试验研究的基础上,开展了数值模拟研究.详细分析了失稳发展过程及失稳形式、最大抗压承载力、屈曲后承载力、跨中最大横向变形、循环累积耗能等性能指标.总体上,数值模拟结果与试验结果及相关规范、文献结果吻合较好,且数值模拟结果的离散性要小于试验结果,验证了数值模拟分析的可信性.基于此...

关 键 词:焊接工字形钢支撑  滞回性能  数值模拟  试验研究  累积耗能
收稿时间:2011/9/1 0:00:00

Numerical simulation of hysteretic behavior for ST12welded I-section steel bracing members
YU Hai-feng and LIAN Wei-an.Numerical simulation of hysteretic behavior for ST12welded I-section steel bracing members[J].Journal of Hebei University of Science and Technology,2011,32(6):628-634.
Authors:YU Hai-feng and LIAN Wei-an
Institution:1. College of Architecture Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China; 2. Shanghai Institute of Architectural Design and Research Company Limited, Shanghai 200041, China)
Abstract:In order to investigate the hysteretic behavior of the bracing members under rare earthquakes, numerical simulation was conducted based on the comparing experiments. The key parameters, including the buckling process and the modes of the local buckling, the maximum compressive strength, the minimum post-buckling strength, the maximum lateral deformation and the cumulative dissipation energy are disscussed in detail. In general, the simulative results agreeds well with the tests, the relevant literatures and the codes, which indicates that the simulative results are credible. It is also found that the simulative discreteness is less than the test ones. Baesd on the results mentioned above, the conclusions are obtained that the stress and the strain distribution in the surface of the bracing members gained by the numerical analysis are in accordance with the true distribution, which lays a foundation for the low cycle fatigue behavior analysis in the future.
Keywords:welded I-section steel bracing member  hysteretic behavior  numericdl simulation  experimental investigation  cumulative dissipation energy
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