基于实体模型的双曲拱桥主拱圈加固研究

Study on main arch ring reinforcement of double-curved arch bridge based on physical model

以具体工程为例,利用Midas-FEA通用有限元软件建立空间实体单元模型,更加直观地得到了双曲拱桥主拱圈改肋式截面为箱形截面加固后主拱圈位移和应力的变化,论证了此加固方法的可行性,解决了该桥型承载力差和横向联系不足的缺点。

Taking concret engineering as an example, the article establishes spatial physical unit model by applying common finite element soft- ware Midas-FEA, and obtains main arch ring displacement and stress change with box-section reinforcement replacing lib-section, and discusses its feasibility. As a result, it effectively solves the problems of bad bearing capacity and insufficient horizontal connection.