摘要
近年来,石拱桥的安全风险事故较多,特别对于跨径不小于40m的大跨径石拱桥,主拱圈一旦发生失稳,将产生坍塌式的破坏,尤其在对桥梁进行提级加固过程中,结构处于最不利的受力状态,以云南省怒江州某桥为例,介绍了大跨石拱桥加固设计的风险控制措施。
In recent years, there are many safety accidents occurred to the stone arch bridges, especially for those with a large span equal to or greater than 40m. Once the main arch ring becomes unstable, it will cause collapse damage, especially in the process of upgrading and strengthening the bridge when the structure is under the most unfavorable stress state. This paper takes a bridge in Nujiang Prefecture of Yunnan Province as an example to introduce the risk control measures for the reinforcement design of large-span stone arch bridges.
作者
彭敬垒
胡剑
PENG Jin-lei;HU Jian(China Highway Engineering Consultants Corporation,Beijing 100097, China)
出处
《公路》
北大核心
2018年第7期63-66,共4页
Highway
关键词
石拱桥
加固
承载能力
评定
风险控制
措施
stone arch bridge
reinforcement
bearing capacity
evaluation
risk control
measures
