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| 大跨中承式钢管混凝土拱桥的自振特性及稳定性 | |
| 引用本文： | 云迪,刘贺,张素梅.大跨中承式钢管混凝土拱桥的自振特性及稳定性[J].吉林大学学报(工学版),2013,43(1):86-91. |
| 作者姓名： | 云迪 刘贺 张素梅 |
| 作者单位： | 1. 吉林建筑工程学院土木工程学院,长春,130118 2. 吉林农业工程职业技术学院,吉林四平,136001 3. 哈尔滨工业大学土木工程学院,哈尔滨,150090 |
| 基金项目： | 国家自然科学基金项目(50608023);吉林建筑工程学院青年科技发展基金项目(J20091108) |
| 摘 要： | 对一大跨中承式钢管混凝土拱桥分别进行了自振特性分析及稳定性分析,研究了设计荷载、拱肋矢跨比、拱面内倾角对大跨中承式钢管混凝土拱桥自振特性、弹性稳定性及弹塑性稳定性的影响。研究表明,降低拱肋矢跨比或将拱面内倾均可有效改善大跨钢管混凝土拱桥的横向面外刚度,提高结构的面外振动频率,并使结构稳定性呈现不同的变化规律。综合考虑自振特性及弹性稳定性两种分析结果比单纯依靠自振特性分析结果评价结构参数取值更合理。本文讨论的360m跨度中承式钢管混凝土拱桥矢跨比宜在1/4附近取值,拱面内倾角度不宜超过10°。 |
| 关 键 词： | 土木建筑结构 大跨径 钢管混凝土 拱桥 自振特性 稳定性 |
Natural vibration and stability of large-span half-through concrete filled steel tubular arch bridge |
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| YUN Di,LIU He,ZHANG Su-mei.Natural vibration and stability of large-span half-through concrete filled steel tubular arch bridge[J].Journal of Jilin University:Eng and Technol Ed,2013,43(1):86-91. | |
| Authors: | YUN Di LIU He ZHANG Su-mei |
| Affiliation: | 1.School of Civil Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun 130118,China;2.Jilin Vocational Technical College of Agricultural Engineering,Siping 136001,China;3.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China) |
| Abstract: | The natural vibration analysis and the stability analysis were performed for a large-span half-through concrete filled steel tube(CFST) arch bridge.The effects of the design load,rise-to-span ratio and arch surface inclination angle on the natural vibration behavior,the elastic stability and the elastic-plastic stability of the large-span CFST arch bridge were investigated.The results show that reducing the rise-to-span ratio or increase inclination of the arch surface improve effectively the transverse out-of-plane vibration frequencies of the structure,and make the structure stability change in different way.Integrated consideration of the natural vibration and the elastic stability to evaluate the parameter selection of structure is more reasonable than that considering the natural vibration only.For the investigated 360 m span half-through CFST arch bridge,the rise-to-span ratio should be around 1/4,and the arch surface inclination should be less than 10°. |
| Keywords: | civil architectural structure large-span concrete filled steel tube arch bridge natural vibration stability |
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