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马岭河特大桥为斜拉桥,其索塔锚固区是结构的关键受力部位,是设计和施工中的难点,单纯的力学分析很难反映结构的实际工作状态与应力分布状况.为此,对马岭河特大桥索塔锚固区进行了足尺节段模型试验,介绍了测试方案、裂缝观察结果、应力的采集和分析以及变形的观测和结果分析;并对索塔进行了空间有限元分析.研究表明,试验和理论分析结果符合程度较好,得出了模型的开裂安全系数、裂缝宽度安全系数及变形等结果,为设计和施工提供了重要的理论依据.
Maling River Bridge is a cable-stayed bridge, and its pylon anchorage zone is the key force-bearing part of the structure, which is a difficult point in design and construction. Simple mechanical analysis is difficult to reflect the actual working state and stress distribution of the structure. , A full-scale model test was conducted on the pylon anchorage zone of the Maling River Grand Bridge. The test scheme, the fracture observation, the stress collection and analysis, the observation and the analysis of the deformation were introduced. The space-limited Meta-analysis.The research shows that the experimental and theoretical analysis are in good agreement with each other, and the crack safety factor, the crack width safety factor and deformation are obtained, which provide important theoretical basis for design and construction.