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溪南大桥经过多年的使用出现一些病害,为摸清桥梁结构的力学性能确保使用安全,基于空间梁格分析理论,对溪南大桥主跨上部结构进行空间梁格简化,建立空间梁格有限元模型,根据设计荷载,对桥梁结构进行静动载理论模拟分析。同时以理论分析结果为依据,对该桥进行静动载现场试验,并且对该桥进行外观及无损检测研究。分析与检测结果表明该桥使用性能较差,一些病害对结构安全、耐久性、正常使用状况等方面危害较大。
After many years of use, XINAN BRIDGE appears some diseases. To find out the mechanical properties of the bridge structure, it is safe to use. Based on the theory of space beam analysis, the space beam is simplified for the main structure of the main span of the XINAN BRIDGE. Model, according to the design load, the static and dynamic load of the bridge structure theory simulation analysis. At the same time, based on the theoretical analysis results, the static and dynamic field tests of the bridge were conducted and the appearance and non-destructive testing of the bridge were studied. Analysis and test results show that the bridge has poor performance, and some diseases are more harmful to the structural safety, durability and normal use.