该文参考现有高速公路常用改扩建形式的优缺点并结合具体项目实际情况,在初步设计阶段从施工难度、施工期间交通组织、占地规模以及现有道路利用率等方面综合考虑,选择了混合加宽和两侧拼接加宽进行同深度研究和比选,并最终推荐两侧拼接加宽作为具体工程的改扩建方案。 Based on the merits and demerits of existing expressway reconstruction and expansion projects and considering the actual conditions of the project, this paper considers the construction difficulty, traffic organization, land occupation and existing road utilization during the initial design stage Hybrid widening and widening on both sides of the splicing to conduct the same depth research and comparison, and ultimately recommended both sides splicing widening as a concrete reconstruction project.