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随着我国国民经济的飞速发展,高速公路的交通量增长态势迅猛,相当一部分已经建成使用的高速公路已不能适应社会经济发展的需要,越来越多的高速公路需要改建和扩建,对现有旧路进行改扩建将是我国21世纪初公路建设所面临的亟待解决的问题。根据广东广佛高速公路改扩建工程的实际施工情况,以主线一般路基加宽为例,对一般填土路堤、轻质土路堤、悬臂式挡墙以及加筋土路堤等4种常见加宽方式的经济技术性进行对比。通过分析,结合目前国内高速公路路堤加宽的实际情况,对高速公路路基加宽提出一些优化建议。
With the rapid development of our country’s national economy, the traffic volume of expressway has been growing rapidly. A considerable part of the expressways already built and used have not been able to meet the needs of social and economic development. More and more expressways need to be rebuilt and expanded. The reconstruction and expansion of the old road will be an urgent issue to be solved in the early 21st century road construction in our country. According to the actual construction of the Guangfo Expressway reconstruction and extension project in Guangdong Province, the general embankment widening of the main line is taken as an example. Four kinds of common widening methods, including embankment filling, light embankment embankment, cantilever retaining wall and reinforced earth embankment, The economic and technical comparison. By analyzing and combining with the current actual situation of embankment widening of expressway in our country, some suggestions for optimizing expressway embankment are put forward.