| 潘盛山,张哲,黄才良.下承式X型双肋拱内倾角度对横向稳定性影响研究[J].,2008,(6):845-850 |
| 下承式X型双肋拱内倾角度对横向稳定性影响研究 |
| Research on lateral stability influenced by inclined angle of through X-type double ribs arch bridge |
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| DOI：10.7511/dllgxb200806012 |
| 中文关键词: 有限元法 X型双肋拱 横向稳定性 合理内倾角度 下承式拱桥 |
| 英文关键词: finite element method X-type double ribs arch lateral stability reasonable inclined angle through arch bridge |
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| 中文摘要: |
| 运用空间有限元法，分析了下承式X型双肋拱桥各结构参数与合理内倾角度的关系．通过回归方法，得出了下承式双肋拱桥拱肋合理内倾角度的近似表达式．结果表明 对于下承式双肋拱桥，拱肋内倾时能否提高拱的横向稳定性与拱系的宽跨比、横系梁在拱肋切向平面内的抗弯刚度、横系梁的数量等参数有关．当采用合理内倾角度时可有效提高拱的横向稳定性，并取得较好的经济效益． |
| 英文摘要: |
| With spatial finite element method (FEM) analysis, the relationship between optimum arch ribs inclined angle and other structure parameters of through X-type double ribs arch bridge is analyzed. By the regression methods, optimum arch rib inclined angle approximate expression of through X-type double ribs arch bridge is gained. The results indicate that if the inclination of rib can improve the lateral stability of arch depends on some parameters, such as the width-span ratio of arch, the flexural rigidity of crossbeams in arch rib tangential plane, and the number of crossbeams. With the reasonable inclined angle, the lateral stability of arch can be improved efficiently, and the economic benefits can be achieved. |
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