预应力混凝土连续弯箱梁侧向位移的产生原因分析与控制

预应力混凝土连续弯箱梁的侧向位移是弯箱梁桥梁工程中容易出现的问题之一。引起侧向位移的主要因素有:桥梁支座的布置形式、温度效应、弯梁的曲率半径、恒荷载作用、活荷载作用、梁体的截面形式及预应力的施工因素。通过对上述因素进行研究与分析,采取了预防侧向位移的限位措施,避免了弯箱梁发生侧向位移。

Cause Analysis and Control of Lateral Displacement of Prestressed Concrete Continuous Curved Box Girder

The lateral displacement of prestressed concrete continuous curved box girder is one of the common problems that often occur in the construction of curved box girder bridges. The main factors causing lateral displacement are the layout of bridge supports, temperature effect, curvature radius of curved beams, constant load, live load, section form of beams and construction factors of prestressing force. Research on and analysis of the above factors, the limit measures are taken to avoid the lateral displacement of the curved box girder.