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高速公路改扩建工程技术是高速公路可持续发展的体现,目前我国早期修建的国道主干线项目即将面临大规模扩建的迫切需要。国内虽已有沈大、沪宁等高速公路改扩建的成功经验,但还不系统,文章以郑漯高速公路改扩建为背景,介绍了改扩建工程总体设计方案比选以及保通方面的研究成果,为尽早形成完善的改扩建工程建设成套技术进行有益的探讨。
The project of expressway reconstruction and extension engineering is the embodiment of expressway sustainable development. At present, the national trunk road project built in our country is about to face the urgent need of large-scale expansion. Though there are already successful experiences in the reconstruction and expansion of Shenyang-Dalian, Shanghai-Nanjing highways and so on in China, it is still not systematic. Based on the reconstruction and expansion of Zheng-Luo Expressway, this paper introduces the comparison and selection of the general design schemes of the expansion and expansion projects and the research of Bao Tong Achievements, as soon as possible to form a complete renovation and expansion project construction technology for useful discussion.