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我国早期建造的高速公路逐步进入改扩建时期,早期修建的高速公路尤其是高速公路相关规范出台前修建的桥梁受限于当时认知水平,设备水平的限制,桥梁方案的设计不尽合理,在后期的运营过程出现了各种各样的病害,同时桥梁改扩建方案直接影响交通组织方案,本文针对京石改扩建工程的长联桥改扩建方案从技术合理性、难易度、经济性方面进行了分析、提出了长联桥解决方案,为类似桥梁的改扩建有很好的借鉴意义。
The early construction of the expressway in our country gradually entered the period of reconstruction and expansion. The bridges built before the promulgation of expressways, especially the relevant expressways, were limited by the cognitive level and equipment level at that time. The design of the bridge scheme was not reasonable. During the later period of operation, a variety of diseases appeared. At the same time, the project of bridge reconstruction and expansion directly affected the traffic organization plan. This paper aimed at the reconstruction and extension project of Changbiao Bridge of Beijing-Shijiazhuang expansion project from technical rationality, difficulty and economy Analyzed and proposed a long bridge solution, which can be used as a reference for the reconstruction and expansion of similar bridges.