【摘要】 笔者对某大跨度钢管砼平行肋拱桥和某提篮拱桥的自振特性进行了计算 ,结合其它文献的计算结果 ,分析了大跨度钢管砼拱桥自振特性的一般性规律 ,并探讨了拱肋内倾对自振特性的影响 ,可为进一步的研究提供参考 .更多还原

【Abstract】 One part of this paper is about the calculation of free vibration characteristic which is possessed by a type of long span arch bridge with parallel ribs and a type of long span x type arch bridge both made of concrete filled in steel tube. After consulting some related caculations from other papers, the universal law of free viberation characteristic which belongs to long span arch bridge made of concrete filled in steel tube with parallel ribs is analyzed in this paper. The last part deals with the effect which intilted arched ribs have on the free viberation characteristic. This paper is aimed to offer referrence for further study.更多还原