城市立交桥匝道曲线梁静动载试验

兰州市小西湖立交桥匝道曲线梁纵向坡度大,曲线半径小,在设计和施工中应用了许多新技术、新材料、新工艺。该桥静、动载试验是为了验证理论分析与设计方法的可靠性,检验施工质量,判断小半径曲线梁的整体受力性能和承载能力是否达到设计和规范的要求,掌握曲线梁桥在多种形式车辆荷载下的动力特性。介绍了该桥匝道小半径曲线梁的理论分析和静、动载试验的方法和结果,并将试验结果与理论分析结果进行比较。结果表明,该桥理论分析和设计计算方法可靠,施工质量优良,桥梁刚度和承载能力满足要求。

Static and dynamic test of curve girder bream of urban grade separation bridge ramp

The design and construction of the curve girder bream with big slope of lengthways and small radius of Lanzhou Xiaoxihu grade separation bridge ramp applied many new techniques, new material and new craft. The static and dynamic test of curve girder bream is for verifying the dependability of the theory analyzes and design method, examining construction quality, judging supporting capacity.The method and result of theory analysis, and static and dynamic test were introduced.The comparison between the theoretical results and experimental results shows that the design of the bridge is reliable and the quality of construction is perfect and the rigidity and the supporting capacity of bridge satisfy request.