摘要
为了准确评估双曲拱桥的承载力,以福建省内东关大桥为例,根据桥梁实际尺寸、实体材料及构件间的实际受力关系,采用大型结构分析商用程序MIDAS,建立有限元计算分析模型,结合现场承载力试验,通过实测值与理论计算值对比,评定桥梁的实际状况.结果表明,理论计算所得的挠度值与试验测定的挠度值结果相近,最大相差6.8 mm,最小相差0.1 mm,平均相差0.47 mm,证明所建模型及试验评定方法是可行的.同时提出了针对该桥的加固建议.
In order to accurately assess the bearing capacity of double-curvature arch bridge, Dongguan Bridge was taken as study example. According to bridge actual size, solid materials, and relationships between the actual bearing components, finite element analysis model is established by using commercial large structure analysis program MIDAS. Combining with the field bearing test, comparison with the measured values and theoretical calculation values, the actual conditions of the bridge was evaluated comprehensively. Theoretical value of deflection is similar to test value, maximum is 6.8 mm, minimum is 0.1 mm,the average difference is 0.47 mm. It is proved that the model is correct and the test method is feasible. Some suggestions are put forward to the bridge reinforcement.
出处
《宁夏工程技术》
CAS
2016年第1期75-78,共4页
Ningxia Engineering Technology
基金
福建省自然科学基金项目(2015J01642)
关键词
双曲拱桥
承载力
评定
double Arch Bridge
the bearing capacity
assessment
