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石拱桥在我国有着悠久的历史,特别是在20世纪的七八十年代我国修建了大量的石拱桥,由于当时的设计施工技术局限性,桥梁经过长期运营使用、环境侵蚀以及运营中超载现象等影响,造成了桥梁的损伤,影响到桥梁的正常使用。为了保证既有石拱桥的安全运营,尽可能地延长桥梁的安全使用年限,对既有的石拱桥进行检测以确定其承载能力并进行加固设计,具有十分重要的现实意义。以具体石拱桥加固实例为依托,通过荷载试验与模拟计算,将石拱桥加固前后承载能力进行对比,验证加固措施合理性。
Stone arch bridge in our country has a long history, especially in the seventies and eighties of our country built a large number of stone arch bridge in the 20th century, due to the limitations of the design and construction technology, the bridge after long-term operation and use, environmental erosion and overloading phenomenon Impact, resulting in damage to the bridge, affecting the normal use of the bridge. In order to ensure the safe operation of the existing stone arch bridge, extend the safe service life of the bridge as much as possible, it is of great practical significance to inspect the existing stone arch bridge to determine its carrying capacity and reinforce the design. Relying on the concrete reinforcement example of stone arch bridge, through the load test and simulation calculation, the carrying capacity of stone arch bridge before and after reinforcement is compared to verify the rationality of reinforcement measures.