【摘要】 介绍了曲线连续梁桥是城市立交桥中广为采用的一种形式 阐述了曲线连续梁桥荷载与结构上的复杂性以及工程中对该类桥梁的分析与设计尚存在的不足 针对深圳市某曲线连续梁桥在成桥运营两年后突发的整体滑移事故,分析了该桥在温度荷载作用下的受力特性.在充分考虑了材料特性、结构构造和温度荷载分布情况下,建立了有限元模型,基于该模型分析了各主要部分的受力,分析了曲梁与橡胶垫间的接触滑动作用.得出的结论可为进一步分析该桥的破坏机理提供依据.更多还原

【Abstract】 Curved continuous beam is widely used in city bridge structure. Due to its complexities in structure and loading, the analysis and design for this type of bridge are not sophisticated in engineering today. In view of the fact that a curved continuous bridge in Shenzhen suddenly displaced wholly after operation for two years, the static characteristics of the bridge under temperature loading are analyzed by using finite element method. A threedimensional finite method model for the bridge is developed. Based on this model, the internal forces of the main parts of the structure are calculated and the interaction behavior of curved beam and its support system are analyzed. The conclusions obtained provide a scientific base for further analysis of destructive mechanism of the bridge.更多还原