珠海大桥静动载试验及成果分析

珠海大桥主航道采用最大跨度为125m预应力混凝土连续刚构，全桥长3125m，宽31m，属特大型公路桥。为了检测桥架结构的静力和动力性能，对连续刚构和连续梁的应变和挠度进行了重点测试。动力试验包括行车试验，制动试验和跳车试验．结果表明桥梁的静力和动力性能符合设计要求，实测连续梁和连续刚构的冲击系数大于1．0，实测中小跨度简支架自振频率大于3．5Hz图2，表5，参3．

THE STATIC AND DYNAMIC LOAD TEST ON ZHUHAI BRIDGE AND THE STUDY OF THE CONCLUSION

This paper introduce that the structure of the main channel of Zhuhai bridge is prestressed continuous rigid-jointed frame with the longest span 125 the meter long,The bridge is an especially big highway bridge with 3 125 meter long and 31 meter wide. To test the static and dynamic performance of the bridge, the main content of test include the strain and deflection of contirnuous rigid-jointed frame and continuous beam. The dynamic test include run test, stopping test and skipping test. The condusion of the test accords with the damands of design. The punching parameter of continuous beam and continuous rigid-jointed frame is bigger than 1.0, and the self vibration frequency of simply supported beam with middle and small span is bigger than 3.5 Hz. 2figs., 5tabs., 5refs.