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采用定性分析的研究方法,对高速公路改扩建工程的设计扩建模式进行研究。以昭会线高速公路改扩建工程为项目依托,在介绍既有二级道路的修建背景和主要技术指标的前提下,提出2种针对性改扩建方式,对其主要影响因素如工程造价、技术合理性、交通组织、可持续发展等方面进行分析,最终确定改扩建模式。研究分析结果表明:建议保留原有二级公路,增加新的路线及加宽现有二级公路的扩建方案。综合得出的方案在路网功能与布局、建设规模与投资、资源利用、社会环境影响等方面优势较明显,综合分析结果准确。
Using the qualitative analysis method, this paper studies the design and expansion mode of expressway reconstruction project. Based on the reconstruction and expansion project of Zhaoxing Expressway, on the premise of introducing the construction background and main technical indexes of the existing secondary roads, two kinds of targeted expansion and renovation methods are proposed, and the main influencing factors such as project cost, technology Rationality, traffic organization, sustainable development and other aspects of the analysis, and ultimately determine the expansion mode. The results of the research and analysis show that it is suggested to retain the existing second-class highways, add new routes and widen the existing second-class highways. The comprehensive plan has obvious advantages in terms of road network function and layout, construction scale and investment, resource utilization and social environmental impact, and the comprehensive analysis result is accurate.