某双曲拱桥承载能力评估方法探讨

我国目前存在着大量的双曲拱桥,由于建造年代久远及原设计荷载等级低等特点,近年来随着交通流量和交通荷载的迅猛发展,桥梁结构不堪重负,造成较严重损伤,结构存在较大的安全隐患。如何合理准确评价既有桥梁的承载能力,是充分发挥这些旧桥的作用,又保证结构安全的关键。基于对结构现有病害调查和成因分析,并结合无损检测和静载试验结果,根据结构实际受力状况和交通量建立计算分析模型,探讨既有桥梁承载能力的评估方法。

Assessment methods of Bearing capacity of a curved arch bridge

At present there are a large number of two-way curved arch bridges in our country,The bridge structure cannot bear such heavy load,and the rather serious damage occurs with potential safety,since the construction with age,the low level of design load,and the fast increase of traffic flow and traffic load in recent years.It is a key how to accurately assess bearing capacity of existing bridge to put them into full play and ensure safety.In this paper,the method for the assessment of load-bearing capacity for...