当前刚架拱桥普遍存在混凝土开裂、承载力不足、病害加剧等问题,经对几座桥梁试验检测结果对比,并以某刚架拱桥为例,建立空间有限元模型,文章分析了桥梁运营后各构件的典型病害及设计计算上的不足,提出了桥梁设计加固的具体对策。 The existing rigid-frame arch bridge generally has such problems as cracking of concrete, insufficient bearing capacity and aggravating of diseases. After comparing the test results of several bridges, and taking a rigid frame arch bridge as an example, the space finite element model is established. After the bridge operation, The typical component of the disease and the design of the lack of calculation, the bridge designed to reinforce the specific countermeasures.