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目前混凝土拱的徐变影响还未引起人们的足够重视,钢管混凝土拱属于组合材料拱桥,徐变对内力的影响较大,本文在不考虑体系内力重分布的情况下,提出了钢管混凝土拱桥由于徐变产生的截面内力重分布计算方法,该方法简单实用,易于掌握,计算结果表明:钢管混凝土拱桥徐变产生的应力重分布值较大,设计时应予以足够的重视。
At present, the creep effect of concrete arch has not been paid enough attention to by people. Concrete-filled steel tube arch is a composite material arch bridge. Creep has a great influence on internal force. In this paper, without considering the internal force redistribution, The method is simple and practical and easy to master. The calculation results show that the stress redistribution generated by the creep of CFST arch bridge should be large enough and should be paid enough attention in design.