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有些石拱桥的建设,受当时的施工机械以及技术水平等条件的制约,使其在长年累月的使用过程中出现诸如墩身裂缝,拱圈表层脱落,钢筋外露、锈蚀,地基承载力不够等质量问题,因此当新建公路或铁路遇到这些拱桥时,很多石拱桥都需要进行加固或者拆除施工,以保证自身承载力或新建线路的通畅。本文以承唐高速东风渠加固、拆除施工为实例,通过对其施工过程中关于地基承载力的处理,主拱圈和墩身加固、渠身的拆除等施工工艺进行详细阐述,以备以后其他类似工程施工参考借鉴。
Some stone arch bridge construction, subject to the construction machinery and technical conditions at the time constraints, so that in the course of its use over the years, such as the emergence of pier cracks, crown ring shedding, exposed steel, rust, insufficient bearing capacity and other quality problems Therefore, when new roads or railways encounter these arch bridges, many stone arch bridges need to be reinforced or demolished to ensure their own bearing capacity or the smoothness of new lines. In this paper, the construction and removal of Dongfeng Canal in Tang-Tang Expressway is taken as an example to illustrate the construction process of the foundation, including the treatment of foundation bearing capacity, the reinforcement of the main arch ring and the pier body and the demolition of the canal body, Reference to similar projects for reference.