支座设置对混凝土连续板桥受力性能的影响

Bearing Incorrect Install Effects on Continuous Concrete Slab Bridges

针对工程实践中支座设置对混凝土连续板桥受力性能的影响,结合工程实际情况建立了3种工况下力学模型,进行了相应的理论分析与有限元分析,并对中间桥墩墩底进行了强度、裂缝宽度以及应力等验算。结果显示:分析的两跨连续板桥结构,支座反置时桥梁结构、支座、桥墩的安全性与耐久性均满足规范要求;理论分析结果与有限元分析结果吻合较好,验证了分析模型与方法的正确性。

According to the bearing incorrect install effects on continuous concrete slab bridge in engineering, three mechanical models were built. The theory analysis and finite element methods analysis were conducted separately, and the strength, stress and crack width of central pier bottom section under temperature loads were also calculated. The results show that, the safety and durability of bridge structures, bearing and pier are satisfy with the requirements of codes for the bearing incorrect install of twospan continuous concrete slab bridges in present paper. The results of theory analysis and results of calculated by ANSYS are agree well with each other, by which the analysis model and methods are verified.