海儿洼钢筋混凝土拱桥有限元分析

结合海儿洼钢筋混凝土拱桥实例,阐述了使用ANSYS建立海儿洼钢筋混凝土拱桥模型的一般方法,并对拱桥模型进行了静力学和模态仿真分析。研究结果表明:海儿洼钢筋混凝土拱桥作为一个整体,其自振频率较为密集,对应于高频振型差异较小,符合一般规律;桥梁的最大位移在拱中间点,向两侧依次减小,桥梁两侧的位移几乎为零,通过计算和比较,得出拱满足刚度要求;通过分析可以知道拱确实是桥梁的主要承载部分,符合拱桥的特性和设计理念;拱上的应力分布比较均匀,对于整个桥梁是很有利的,通过比较和计算,得出拱满足强度要求;这种拱桥的结构比较合理,可作为其它拱桥设计时的参考。

The Modeling and Simulation Analysis of Haierwa Reinforced Concrete Arch Bridge

Combining the project of Haierwa reinforced concrete arch bridge,this paper explains the general method for setting up the arch bridge's model by using ANSYS,and t he simulation analysis of static and mode of Haierwa reinforced concrete arch bridge is carried out.The research results indicate that as a whole arch bridge,the natural frequency of Haierwa reinforced concrete arch bridge is closely packed and it is smaller than the higher frequency of Haierwa reinforced concrete arch bridge,therefore,it is accordant with the common rule;Besides,the max displacement of the arch bridge is on the middle spot of the arch bridge and it reduces to two sides gradually and the displacement of two sides goes near to zero.And by calculating and comparing,the arch stiffness meet stiffness requirements;The arch of the bridge is the main carrying part of the bridge by analysis.Therefore,it is accordant with characteristic of the bridge and design idea;The stress of the arch is more uniform that is propitious to the hole bridge;And by calculating and comparing,the strength of the arch meet strength requirements;The structure of the arch bridge is more reasonable.Therefore,the outcome of the paper is very beneficial to designing for other arch bridges.