单跨复合圬工圆弧拱受力特性分析研究

随着交通量的增大和结构自身承载力的降低,越来越多的石拱桥不能满足使用要求。作为我国重要的文化遗产,石拱桥的保护尤为重要,因此对石拱桥的改造和仿制还原得到了越来越多的应用。石拱桥改造和仿制常采用新的结构体系,在新的结构体系里通常用其他构件和石拱圈协同受力,共同承担外部荷载。改造后的结构是石-混凝土复合拱桥,对于复合拱桥的受力机理,目前研究较少。该文以某石拱桥消险改造工程为背景,研究石-混凝土复合拱桥的受力性能,可供同行参考。

Analysis and Study of Stress Characteristics of Single-span Composite Masonry Arch

With the increment of traffic flow and the reduction of self-bearing capacity of structure,more and more stone arch bridges can not satisfy the service requirements.As the important cultural heritage of China,the protection of stone arch bridge is particularly important.Therefore,the reconstruction and copying restoration of stone arch bridge are more and more implemented.The new structural system is often used in the reconstruction and copying of stone arch bridge.In the new structural system,the other components and the stone arch are commonly coordinated to stress and together to bear the external load.The reconstructed structure is the stone – concrete composite arch bridge.There is a little study on the stress mechanism of composite arch bridge now.According to the reconstruction project of a stone arch bridge,the article studies the stress functions of composite arch bridge.