群益大桥试验研究

群益大桥为钢管混凝土单圆管肋拱桥 .该桥进行了实桥静载测试和两根钢管混凝土单圆管肋拱面内全过程实验室试验 .实桥测试结果表明 ,该桥在使用阶段结构处于弹性工作阶段且具有较大的刚度 .模型试验结果表明 ,钢管混凝土肋拱具有较好的弹塑性性能和较高的承载能力 ,设计计算时应计及钢管对核芯混凝土套箍的有利影响

Experimental study on Qunyi Bridge

Quyi Bridege of Fu'an City is a concrete-filled steel tubular (single tube) rib arch bridge. In this paper,the static text on the real bridge and the model experiment of rib arch under in-plane loads are carried out. The real bridge text indecites that the bridge is in the elastic phase in the service phase and its stiffness is larger than the calculation. The model experiment reveals that the CFST rib arch has good elastic-plastic performances and high strength and the strength of the inner concrete of the steel tube which raises the hoop action must be considered in the design calculation.