| 双工字钢组合梁桥钢梁设计参数敏感性分析与优化 |
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| 引用本文： | 石雪飞,马海英,刘琛.双工字钢组合梁桥钢梁设计参数敏感性分析与优化[J].同济大学学报(自然科学版),2018,46(4):0444-0451. |
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| 作者姓名： | 石雪飞 马海英 刘琛 |
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| 作者单位： | 同济大学土木工程学院;天津市市政工程设计研究院 |
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| 基金项目： | 国家自然科学基金项目（51608378）,上海市科委浦江人才计划项目（16PJ1410100）,安徽省交通投资集团有限责任公司课题:新型钢板组合梁桥综合技术研究 |
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| 摘 要： | 对于中小跨径的双主梁式钢板组合梁桥,通过有限元法进行参数分析,综合考虑弯曲应力、局部抗屈曲能力、体系极限承载力等因素,研究局部设计参数(翼缘板宽厚比、腹板高厚比、加劲肋布置等)对双工字钢组合梁桥结构性能的影响,提出设计参数的合理取值建议,并从全桥用钢量最小的角度提出合理钢梁梁高,可为同类工程提供设计参考.
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| 关 键 词： | 组合梁 双工字钢 设计参数 有限元 屈曲稳定 极限承载力 |
| 收稿时间： | 2017/5/15 0:00:00 |
| 修稿时间： | 2018/3/19 0:00:00 |
Parametric Study and Optimization on Behavior of Twin I girder Composite Bridges |
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| SHI Xuefei,MA Haiying and LIU Chen.Parametric Study and Optimization on Behavior of Twin I girder Composite Bridges[J].Journal of Tongji University(Natural Science),2018,46(4):0444-0451. |
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| Authors: | SHI Xuefei MA Haiying and LIU Chen |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China and Tianjin Municipal Engineering Design & Research Institute, Tianjin 300051, China |
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| Abstract: | The related parameter study for twin I girder bridges composite with concrete deck is few in current research. In the paper, FE analyses were developed to study the bending, local buckling and the maximum load capacity of twin-I girder bridges. The design parameters were studied including flange width thickness ratio, web depth thickness ratio, stiffener arrangement, and girder depth. Design recommendations were proposed in the paper. A recommendation for girder depth value was given from material saving perspective. |
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| Keywords: | composite bridge twin-I girder design parameter finite element method buckling stability ultimate capacity |
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