| 吕玉匣,刘炎海,张林.X型双肋拱桥矢跨比对其动力特性的影响[J].现代交通技术,2009,(1): |
| X型双肋拱桥矢跨比对其动力特性的影响 |
| Effect of Rise-span Ratio of the Double-rib X-arch Bridge on Its Dynamic Characteristics |
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| DOI： |
| 中文关键词: X型肋拱桥 动力特性 矢跨比 自振频率 |
| 英文关键词:double-rib X-arch bridge dynamic characteristics rise-span ratio natural-frequency |
| 基金项目: |
| 吕玉匣 刘炎海 张林 |
吕玉匣,Lv Yuxia(烟台大学土木工程学院,山东,烟台,264000)
;刘炎海,Liu Yanhai(兰州交通大学土木工程学院,甘肃,兰州,730070)
;张林,Zhang lin(中铁一局集团公司,陕西,西安,710054)
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| 中文摘要: |
| X型双肋拱桥是利用拱肋侧倾来提高其横向整体稳定性,随着跨径的增大及拱肋的轻型化,其动力特性对整个桥梁安全影响较大.文章利用有限元方法研究了X型双肋拱桥矢跨比的取值对自振频率的影响,认为对于一定的跨度存在一个最优动力矢跨比,可为该类桥型设计提供参考. |
| 英文摘要: |
| X-arch bridge uses the sloping arch rib to improve its global stability. With the span increasing and the smaller weight of the arch rib, the effect of the dynamic characteristics on the safety of the entire bridge becomes remarkable. The effect of the rise-span ratio of the double-rib X-arch bridge on the natural frequency is studied in this paper.It is concluded that there is a most advantageous rise-span ratio of a double-rib arch bridge for a given span,and this conclusion could provide reference to the... |
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