新旧规范下某双曲拱桥结构承载能力研究

Study on Structural-load-carrying Capacity of A Two-way Curved Arch Bridge under Both New and Old Regulations

双曲拱桥是中国特有的桥型,一些双曲拱桥已经严重老化,如何准确地评价这些已经不堪重负的双曲拱桥,成为目前亟待解决的一个问题。结合具体的工程实例,利用有限元软件,建立有限元模型,来分析比较新、旧规范下双曲拱桥的承载能力,为桥梁养护部门制定合理的加固和养护方案提供科学的依据。

Two- way curved arch bridge is typically applied in China. Some two- way curved arch bridges are facing the problems of severe aging. Thus,how to evaluate the conditions of such bridges accurately has become an urgent problem to be solved. In this thesis,combined with a concrete case,finite element mode is developed with finite element software to compare the structural- load carrying capacity of two- way curved arch bridge under new regulations with that under the old ones,which provides scientific basis for the reinforcement and maintenance of such bridges.