混凝土连续弯箱梁桥支承体系研究

Research on Support System for Continuous Curved Box Girder Concrete Bridge

近年来弯箱梁桥的侧向位移病害日趋严重,而支座布置不合理是其中一个重要的原因。针对目前连续弯箱梁桥常采用的支承形式,提炼出4种支承体系,分析各支承体系的特点。通过某典型实桥,对不同支承形式各荷载作用下的竖向支反力和扭矩进行对比分析,最后提出相关的优化措施。

In recent years, lateral displacement of curved box girder bridge has become more and more serious, and unreasonable placement of bearings is one of the important reasons. Four types of support systems have been summed up in light of continuous curved box - girder bridge supports used, the characteristics of each suppori system have been analyzed. Through a typical bridge, comparison analysis between the vertical support reaction force and moment of torque have been conducted for different support styles, and finally the relevant optimization measures have been provided as references for such bridge design.