贵州某悬索桥静载试验研究与结构性能评价

为检验既有大跨径悬索桥结构的静力性能,对主跨338m地锚式悬索桥进行静载试验,测试了结构的应变、挠度、吊索索力等值,并将实测值与有限元计算的理论值进行了对比分析。结果表明,结构的应变、挠度、吊索索力等测试结果与理论数据相符,索力校验系数均小于1.0,说明该桥的强度、刚度达到了设计的要求,静载试验的理论分析模型很好地反映了实际桥梁的受力特性。

Static Load Test Research and Structural Performance Evaluation of a Suspension Bridge in Guizhou Province

In order to inspect the static behavior of an exiting long-span suspension bridge structure, static load tests are conducted. The strains（stresses）, deflection and the tension of the cable are measured, the testing data are compared with theoretical values obtained from finite element analysis. The results shows that the values of the cable force, structure strain, deflection are coincide with the theoretical data, and that the testing coefficients of the cable force are less than 1.0, Which indicates that the strength and stiffness of the bridge meet the design requirements. The theoretical model well reflect the characteristics of the actual force of the bridge.