轨道专用斜拉桥动力荷载试验与评价

蔡家嘉陵江轨道专用斜拉桥主跨250 m,其动力荷载试验内容包括:结构动力特性参数的测定,并设计动力荷载试验,获取结构的动力系数。通过对实测结果的分析和评价,说明该桥结构基本动力特性指标良好,能够满足设计和使用要求。同时为今后该桥的运营养护提供初始数据,并为同类型桥梁的设计、施工积累可靠资料。

Dynamic loading test and assessment of cable-stayed bridge which Specialized for rail transit

The caijia jialing river bridge which specialized for rail transit is a cable-stayed bridge with mainspan 250m. The dynamic loading test includes the following contents: determination of the structural dynamic characteristic parameters, the design of dynamic loading test and obtaining the dynamic coefficients of the structure of. The assessment analysis based on the measured results show that the dynamic characters of bridge which are normal can satisfy the design and operating requirements. At the same time, the research can provide the initial data for the bridge in the future operation maintenance, and accumulate reliable data.for the design and construction of the same type bridge.