钢箱拱桥中CFRP吊杆受力性能试验研究

The study on the mechanical behaviors of steel box arch bridge with CFRP suspen ded cables

结合某钢桥工程,按照相似原理,建立了碳纤维系杆拱桥缩尺试验模型,对其在荷载下的应变以及极限荷载能进行试验研究,试验结果表明:模型实验各工况中其应变和挠度与荷载除了在杆件发生断裂或位移的情况外基本呈线性变化,说明在解决CFRP杆件锚具和杆件断裂的问题后系杆拱桥中配置CFRP吊杆是可行的。

Combined with a steel box arch bridge,according to the similarity principle,carbon arch bridge scale test model is established,and the strain under load and ultimate load experiment study. Test results indicted that the model test of its basic linear strain and deflection and load change,but in the process of loading appeared the phenomenon of rupture and slip,this showed that to solve the CFRP bar anchorage and rod fracture problems,the configure of CFRP boom was feasible in back tied arch bridge.