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南平市黄墩大桥是一座采用塔墩梁固结体系的单塔单索面宽箱梁预应力混凝土斜拉桥,跨径组成为165+115m。为了保证大桥在运营过程中的安全可靠,大桥在桥梁通车前进行了静动力荷载试验,对静力荷载工况下的主梁挠度、应力、主塔位移和拉索索力增量,和动力荷载工况下的自振模态、冲击系数进行了实桥测试,并结合有限元模型的理论计算结果进行分析。荷载试验结果表明:南平黄墩大桥在试验荷载作用下,主桥结构的静动力性能良好,承载能力满足设计要求。
Huangdun Bridge in Nanping City is a single tower single cable box girder prestressed concrete cable-stayed bridge with tower-pier consolidation system with a span of 165 + 115m. In order to ensure the safe and reliable operation of the bridge during the operation of the bridge, the static and dynamic load tests of the bridge before the opening of the bridge are carried out. The deflection, stress, displacement of the main tower and cable force increment of the main tower under static load, Mode of natural vibration mode and impact coefficient of the real bridge test, combined with the theoretical results of finite element model analysis. The load test results show that under the test load, the main bridge structure of Nanping Huangdun Bridge has good static and dynamic performance and the bearing capacity meets the design requirements.