目前伴随着经济的快速发展,交通量也再与日俱增,这给现有的交通设施造成了很大的压力,这种形势下,无论是高速公路还是其他低等级公路,都面临着改扩建的情形。但同时由于受到新增占地与建设成本的限制,更多的道路采取了加宽改造的方式,当遇到旧路中的桥梁需要加宽改造时,则需要从桥梁整体稳定性,受力特征等多方面考虑加宽改造形式的适宜性。 At present, with the rapid economic development and the increasing traffic volume, great pressure has been exerted on the existing transport facilities. In such a situation, both the expressway and other low-grade highways are faced with the situation of reconstruction and expansion . However, at the same time, due to the restriction of new land occupation and construction cost, more roads have been taken to widen the transformation. When the bridge in the old road needs to be widened and transformed, the overall stability and the force Characteristics and many other considerations to broaden the appropriateness of the form of transformation.