刚架拱桥结构兼有拱和梁的特点,斜腿与跨中形成拱的作用承受较大的轴向压力,但只分担较小的弯矩。最近十几年,刚架拱桥的应用在跨径增大、外形变化、应用于连拱、在软地基上修建及施工方法改进等方面不断有所发展,获得良好的经济效益。 Rigid arch bridges have the characteristics of both arches and beams. The function of forming the arch between the inclined legs and the span is subject to greater axial pressure, but only the smaller bending moment is shared. In the recent ten years, the application of rigid frame arch bridge has made great progress in the aspects of increasing the span, changing the shape, applying to the arch, improving on the construction of soft foundation and improving the construction method, and obtained good economic benefits.