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刚架拱桥是在双曲拱桥、桁架拱桥基础上结合斜腿刚构的特点发展而来的复合结构桥型,兼有拱与斜腿刚架的力学特性和优势。通过对一运营十多年既有刚架拱桥的结构损伤调查研究,同时开展静载试验研究,测定桥梁应力、变形等结构整体行为,评估该桥承载能力等实际工作状态,为加固设计提供依据。
The rigid frame arch bridge is a composite structure bridge which is developed on the basis of the double curved arch bridge and the truss arch bridge combined with the rigid structure of the inclined leg, and has the mechanical characteristics and advantages of the arch and the oblique leg rigid frame. Through the investigation and study of the structural damage of the existing rigid frame arch bridge for more than ten years of operation, the static load test and study are carried out at the same time, the overall behavior of the bridge such as stress and deformation is measured, and the actual working status of the bridge is evaluated, which provides the basis for reinforcement design .