双曲拱桥拓宽加固改造实例及力学性能分析

Widening and reinforcing of two-way arch bridge and its dynamical analysis

结合工程实例，介绍了双曲拱桥拓宽加固改造方法，对改造后的力学性能进行了分析，得出了新增拱肋不但能够拓宽桥梁，还能够分担较多的活荷载的结论，以达到推广该施工方法的效果。

Combined with specific engineering, it introduces widening and reinforcing of two-way arch bridge, and analyzes dynamical performance after modification, obtains that it widening bridge and increasing live load, which reaches the effect.