| 系杆拱桥在风压力下吊杆力的非保向效应 |
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| 引用本文： | 金成棣,范灵雨,令狐云云. 系杆拱桥在风压力下吊杆力的非保向效应[J]. 城市道桥与防洪, 2020, 0(5): 280-285,M0027,M0028 |
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| 作者姓名： | 金成棣 范灵雨 令狐云云 |
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| 作者单位： | 1.同济大学;2.上海兰德公路工程咨询设计有限公司 |
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| 摘 要： | 研究了系杆拱桥在风压力与拱轴压力共同影响下引起的横向挠曲,同时考虑了吊杆力的非保向共同作用。采用单榀箱形拱肋与结合梁为系梁,以及框架式联结系的双榀系杆拱桥2个算例,对上述影响作出相应的计算,并对箱形拱肋弹性薄板进行局部加劲的优化设计,以提高其稳定性。
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| 关 键 词： | 系杆拱桥 吊杆力 非保向力效应 薄板局部稳定性 |
Non-directional Force Effect of Suspender Force of Bowstring Arch Bridge under Wind Pressure |
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| Abstract: | The lateral deflection of bowstring arch bridge under the common effect of wind pressure and arch axis pressure is studied,and the non-directional force joint action of suspender force is also considered.The above effect is relatively calculated by two examples of a single-truss box arch rib and composite beam used as straining beam,and a frame-type bracing of double-truss bowstring arch bridge.The optimal design of local stiffening of thin elastic plate of box arch rib is carried out in order to improve its stability. |
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| Keywords: | bowstring arch bridge suspender force non-directional force effect local stability of thin plate |
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