混凝土连续弯梁桥侧向位移分析及对策研究

Study on Lateral Displacement of Continuous Curved Girder Concrete Bridges

混凝土连续弯梁桥出现的爬移问题日渐引起了工程界的重视,针对此问题,分析了混凝土连续弯梁桥产生侧向位移问题的主要原因,包括弯梁桥的曲率半径、恒载作用、支座布置形式、温度变化影响、活载作用、梁的截面形式、下部构造特征、混凝土的收缩徐变以及预应力施工等因素,进一步从设计和施工方面提出了一些相应的预防爬移问题的处理措施,以防止弯梁桥出现爬移现象。

Accidents of curved girder concrete bridges are presented and the main causes of the problems of curved girder concrete bridges are analyzed, including curvature radius of the bridge, dead load, supporting form, temperature variation, live load, section form of the beam, infrastructure, shrinkage and creep of concrete of the bridge structure and prestressing coustruction.The treatments of preventing lateral displacement of curved girder bridges are proposed.