由于适用的跨径范围与地形地质条件的相似性 ,桁式组合拱桥和钢管混凝土拱桥在方案设计甚至初步设计阶段经常被同时提出。为了进一步从力学性能上进行比较 ,对两种桥型的静力特性如拱脚反力、拱顶挠度、温度敏感性等做了详细的分析 ,并初步研究了各自的动力特性和稳定性 Due to the similarity of the applicable span range and topography and geology conditions, the truss composite arch bridge and CFST arch bridge are often put forward simultaneously in the program design and even the preliminary design stage. In order to further compare the mechanical properties, the static characteristics of two kinds of bridges such as arch and foot reaction force, dome deflection and temperature sensitivity were analyzed in detail, and their dynamic characteristics and stability