论文部分内容阅读
针对独柱支承连续曲线梁桥的预偏心距设计存在的问题,采用数值模拟方法分别对不同曲率半径的独柱支承曲线连续梁桥的中支点合理预偏心距设置问题进行了研究。独柱支承曲线连续梁桥中支点预偏心距的设计不仅要考虑主梁扭矩的分布,同时还要考虑主梁的扭转角位移、主梁端部支承反力是否受拉等因素。不同曲率半径的独柱支承曲线连续梁桥的中支点预偏心距确定时,所考虑因素的侧重点也不相同。
Aiming at the existing problems of pre-eccentricity design of continuous curved girder bridge with single-column support, the reasonable pre-eccentricity setting of mid-fulcrum of continuous curved girder bridge with different curvature radius is studied by using numerical simulation method. The design of the pre-eccentricity of the mid-point of the continuous beam bridge with continuous curved beam should not only consider the distribution of the torsion moment of the main beam, but also consider the displacement of the torsional angle of the main beam and the reaction force of the end of the main beam. When the pre-eccentricity of the mid-fulcrum of a continuous beam bridge with different curvature radiuses is determined, the emphasis of the considered factors is also different.